Analytical results from a geochemical survey of the U.S. Virgin Islands

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Date: 1986-01-01
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UNITED STATES DEPARTMENT OF THE INTERIOR GEOLOGICAL SURVEY Analytical results from a geochemical survey of the U.S. Virgin Islands by R. T. Hopkins, R. E. Tucker, T. A. Roemer, J. D. Sharkey, and H. V. Alminas Open-File Report 86-86 This report supplants U.S. Geological Survey Open-File Report OF-84-785. A part of the data from St. Thomas and St. John appeared in the earlier report 1986 CONTENTS Page Introduction.............................................................. 1 Sampl e col 1ecti on......................................................... 1 Sampl e preparation........................................................ 6 Sample analysis........................................................... 6 References cited.......................................................... 10 Explanation of data tables................................................ 10 ILLUSTRATIONS Figure 1. Index map of the Virgin Islands and vicinity................... 2 Figure 2. Sampling sites on St. Thomas................................... 3 Figure 3. Sampling sites on St. John..................................... 4 Figure 4. Sampling sites on St. Croix.................................... 5 Figure 5. Sample preparation flow sheet for concentrates................. 7 TABLES Table 1. Limits of determination for the spectrographic analysis of rocks, soils, and stream sediments, based on a 10-mg sample........... 8 Table 2. Limits of determination for the spectrographic analysis of the nonmagnetic, magnetic, and hand-magnet fractions of panned concentrates and oxalic-acid leachates based on a 5-mg sample......... 9 Table 3. Semiquantitative spectrographic analysis of outcrop samples collected on the U.S. Virgin Islands.................................. 11 Table 4. Semiquantitative spectrographic analyses of soil samples collected on the U.S. Virgin Islands.................................. 62 Table 5. Semiquantitative spectrographic analyses of stream-sediment samples collected on the U.S. Virgin Islands.......................... 88 Table 6. Semiquantitative spectrographic analyses of the nonmagnetic fraction of heavy-mineral concentrates from the U.S. Virgin Islands...109 Table 7. Semiquantitative spectrographic analyses of the magnetic fraction of heavy-mineral concentrates from the U.S. Virgin Islands...142 Table 8. Semiquantitative spectrographic analyses of the hand-magnet fraction of heavy-mineral concentrates from the U.S. Virgin Islands...175 Table 9. Semiquantitative spectrographic analyses of oxalic-acid leachates derived from the bromoform-light fraction from the U.S. Virgin Islands...................................................197 INTRODUCTION The U.S. Geological Survey began multidisciplinary studies of the U.S. Virgin Islands in 1983. These studies are being conducted to assist the Government of the Islands by providing necessary information for future plan- ning and resource appraisal. The initial phase of the geochemical study was designed to examine the regional geochemical characteristics of the Islands. The U.S. Virgin Islands are located in the Greater Antilles island arc some 40 miles east of Puerto Rico (figure 1). The major islands include St. Thomas, St. John, and St. Croix. There are about 50 smaller islands in the study area, concentrated near St. Thomas and St. John. St. Thomas is 12 miles long by approximately 3 miles wide and contains some 19,000 acres. St. John is 7 miles long, on the average is 3 miles wide, and contains some 12,000 acres. The topography of both islands is mountainous. The highest elevation on St. Thomas is 1556 feet (Crown Mountain) and 1277 feet on St. John (Bordeaux Mountain). The islands have very irregular coastlines with many bays and offshore islets. St Croix, the largest of the U.S. Virgin Islands, is 22 mi long and some 6 mi wide and incorporates approximately 54,000 acres. St. Croix is characterized by regular coast lines and has two adjacent islands. The topography here is more subdued. The highest areas on St. Croix occurs in the northwest (Mt. Eagle at 1,165 ft) and on the eastern end of the island. Streams on all these islands are intermittant and discharge into the sea. The climate in the Virgin Islands is maritime tropical. The average annual rainfall at higher elevations is 50-60 in. and at lower elevations 20-30 in. There is no well-defined wet or dry season. The temperature is generally constant between 80 and 85°F. The vegetation is generally not native to the islands and consists of thorny brush and Hurricane grass in the formerly cleared areas. The uncleared portions of the more mountainous areas are covered by dense tropical forest with a few large trees and a dense undergrowth of brush and vines. Sample collection Rock, soil, and stream-sediment samples were collected during three field seasons. St. Thomas and St. John were sampled during June and November 1983, respectively. St. Croix was sampled in November/December of 1984. Stream-sediment samples were collected from third-order streams. If additional sampling detail was required, B-horizon soil samples were collected in the intervening areas. At stream-sediment and soil sites, a 10-15 Ib composite sample was collected for panning and a 1-lb sample for sieving. In many instances, especially on St. Croix, a stream-sediment and an adjacent soil sample were collected. Outcrops were sampled whenever available near a stream-sediment or soil sample site as a composited 1-lb chip sample. Sample sites for St. Thomas, St. John, and St. Croix are shown on figures 2, 3, and 4, respectively. 1*1 VIRGIN ISLANDS \ REPUBLIC ATLANTIC OCEAN GREATER ANTILLES . CROIX O MARTINtOUE CARIBBEAN SEA VENCZICLA 100 90 0 USA VIRGIN ISLANDS J *- «-**-' 100 XX) MILES 0 100 KILOMCTCMS 20O aoo 300 Figure 1.--Index map of the Virgin Islands and vicinity. 65°06'00" 65° 00'00" 64° 54' 00" 64* 48'00" 18 25'30 23' 00" 20'30^ 18'QCfi Figure 2. Sampling sites on St. Thomas, U.S. Virgin Islands. 64*50 24'00" 21' 30" 19' 00" 64° 38' 17'30 KHOMETERS Figure 3.-- Sampling sites on St. John, U.S. Virgin Islands. 64 55 00 17 50 00 ~f- 64 33 00 -J- 17 50 OC 17 40 00-h 64 55 00 1 Miles Figure 4. Sampling sites on St. Croix. _|_ 17 40 0 64 33 00 Figure 4. Sampling sites on St. Croix Sample preparation All samples were oven dried at 250°F for six hours as per U.S. Department of Agriculture regulations. The 1-1 b soil samples were disaggregated, sieved, and the <80 mesh fraction analyzed. The stream sediments were sieved and the <80-mesh fraction analyzed. The rocks were crushed, pulverized using ceramic plates, and the resultant material was analyzed. A sample preparation flow sheet for panned concentrates collected on St. Thomas and St. John is shown in figure 5. The St. Croix panned concentrates were treated in an identical way with the exception that the magnetic separation was done with an S. G. Frantz Co. LB-1 model separator. A split equivalent to the 1.0 ampere L-l model fraction was obtained using a .35 amp setting with a 15° forward and 20° side slope. The oxalic-acid leachates were prepared by bringing 5 gm of the bromoform-light fraction to a boil in 20 ml. of 5% oxalic acid. The solution was filtered hot through a No. 41 Whatman filter and the filtrate brought to dryness on a hot plate. The resultant material was then heated for 4.5 hours at 450°C in a muffle furnace to convert the oxalates to oxides. The oxides were homogenized with a mortar and pestle prior to analysis (Alminas and Mosier, 1975). Sample analysis All sample types were analyzed by the six-step D.C.-arc semiquantitative emission spectrographic method (Grimes and Marranzino, 1968) for 31 elements. All of the analytical values are reported as six steps per order of magnitude (1, 1.5, 2, 3, 5, 7 or multiples of 10). These values approximate the geometric midpoints of successive concentration ranges (Grimes and Marranzino, 1968). This analytical method utilizes a series of elemental standards against which the elemental concentrations in the samples are compared. If a sample contains elemental concentrations above the highest standard used (table 1), the elemental concentration is represented by a "greater than" symbols (>) before the upper standard. If a sample contains elemental concentrations below the lowest standard, two code designations can be assigned for the elemental concentration. If the sample concentration is slightly below the lowest standard, the elemental concentration is represented by a "less than" symbol (<) before the lower standard. If the sample concentration is not detected, the elemental concentration is given and "N" code. The six-step D.C.-arc emission spectrographic method provides reproducibility within one geometric interval of the reported value approximately 86 percent of the time and within two geometric intervals of the reported value approximately 96 percent of the time (Motooka and Grimes, 1976). The limits of determination for the spectrographic analysis of rocks and sieved soil and stream-sediment samples are given in table 1. Limits for the concentrate fractions and the oxalic-acid leachates are given in table 2. Any use of trade names is for descriptive purposes only and does not imply endorsement by the U.S. Geological Survey. 1. a. ss - stream-sediment b. s - son bromoform separation s.g.-2.86 save for oxalic acid leaching S.G. Frantz co., L-l model Isodynamlc Separator \ 0.2 amp., ss-15, fs-25 \^ 2. a. ss - side slope *\ b. fs * forward slooe L / \ combine \ .-A S.G. Frantz co., model L-l Isodynamlc Separator 1.0 amp-, ss-15, fs-25 hand-grind Figure 5. Sample preparation flow sheet for concentrates. TABLE 1. Limits of determination for the spectrographic analysis of pocks and stream sediments, based on a 10-mg sample Elements Lower determination limit Upper determination limit Percent Iron (Fe) Magnesium (Mg) Calcium (Ca) Titanium (Ti) 0.05 .02 .05 .002 20 10 20 1 Parts per million Manganese (Mn) Silver (Ag) Arsenic (As) Gold (Au) Boron (B) Barium (Ba) Beryllium (Be) Bismuth (Bi) Cadmium (Cd) Cobalt (Co) Chromium (Cr) Copper (Cu) Lanthanum (La) Molybdenum (Mo) Niobium (Nb) Nickel (Ni) Lead (Pb) Antimony (Sb) Scandium (Sc) Tin (Sn) Strontium (Sr) Vanadium (V) Tungsten (W) Yttrium (Y) Zinc (Zn) Zirconium (Zr) Thorium (Th) 10 0.5 200 10 10 20 1 10 20 5 10 5 20 5 20 5 10 100 5 10 100 10 50 10 200 10 100 5,000 5,000 10,000 500 2,000 5,000 1,000 1,000 500 2,000 5,000 20,000 1,000 2,000 2,000 5,000 20,000 10,000 100 1,000 5,000 10,000 10,000 2,000 10,000 1,000 2,000 TABLE 2. Limits of determination for the spectrographic analysis of the nonmagnetic, magnetic, and hand-magnet fractions of panned concentrates and oxalic-acid leachates, based on a 5-mg sample Elements Lower determination limit Upper determination limit Percent Iron (Fe) Magnesium (Mg) Calcium (Ca) Titanium (Ti) 0.10 .05 .10 .005 50 20 50 2 Parts per million Manganese (Mn) Silver (Ag) Arsenic (As) Gold (Au) Boron (B) Barium (Ba) Beryllium (Be) Bismuth (Bi) Cadmium (Cd) Cobalt (Co) Chromium (Cr) Copper (Cu) Lanthanum (La) Molybdenum (Mo) Niobium (Nb) Nickel (Ni) Lead (Pb) Antimony (Sb) Scandium (Sc) Tin (Sn) Strontium (Sr) Vanadium (V) Tungsten (W) Yttrium (Y) Zinc (Zn) Zirconium (Zr) Thorium (Th) 20 .1 500 20 20 50 2 20 50 10 20 10 50 10 50 10 20 200 10 20 200 20 100 20 500 20 200 10,000 10,000 20,000 1,000 5,000 10,000 2,000 2,000 1,000 5,000 10,000 50,000 2,000 5,000 5,000 10,000 50,000 20,000 200 2,000 10,000 20,000 20,000 5,000 20,000 2,000 5,000 REFERENCES CITED Alminas, H. V., and Mosier, E. L., 1975, Oxalic-acid leaching of rock, soil, and stream-sediment samples as an anomaly accentuation technique: U.S. Geological Survey Open-File Report 76-275, 24 p. Grimes, D. J., and Marranzino, A. P., 1968, Direct-current arc and alternating-current arc spark emission spectrographic field methods for the semiquantitative analysis of geologic materials: U.S. Geological Survey Circular 591, 6 p. Hopkins, R. T., et al, 1984, Analytical results from a geochemical survey of St. Thomas and St. John, U.S. Virgin Islands, using soil, rock, and panned-concentrate samples: U.S. Geological Survey Open-File Report 84-785, 64 p. Motooka, J. M., and Grimes, D. J., 1976, Analytical precision of one-sixth order semiquantitative spectrographic analyses: U.S. Geological Survey Circular 738, 25 p. Explanation of data tables The data in tables 3-9 are presented in the same sequence for all sample types: St. Thomas, St. John and St. Croix. The letters ST, SJ and SC in the field numbers identify the sites as originating on the islands of St. Thomas, St. John and St. Croix, respectively. Latitudes and longitudes are not incorporated into table 3. Here, field numbers like 84SJ001R, 84SJ001R1, 84SJ001R2 indicate that three separate outcrop samples were collected in the immediate vicinity of sample site 84SJ001. The latitude and longitude for each sample site are provided in the other data tables. 10 Table 3. Semiquantitative spectrographic analyses of outcrop samples from the U.S. Virgin Islands. (V, not detected; <, detected but below the limit of determination shown; >, determined to be greater than the value shown.] Sa uple STDD2R STOOUR ST005R ST"'D6R STT08R ST008RA STDD8RB ST008RC ST008RD ST008RF ST008RI STOD9RA ST009RH STOD9RC STDD9RD ST01 1R ST011R1 ST012R ST013R STD13RI ST01UR ST015R ST316R ST017R ST018P ST019R ST020R ST021R ST021RA ST021RB ST021RC ST022R ST023R ST02<4R ST325R ST->26R ST027R 5 T "> 2 8 R ST029R ST~30R ST031R 5T03UR ST335R S T TI 3 6 R STC3RR Fe-pct. Mg-pct. s 3.00 5.00 5.00 5.00 .70 3.00 .30 1 .00 1 .50 5.00 1.00 3.00 10. CO 1 .00 10.00 20.00 2.00 3.00 2.00 1 .50 10.00 5.0C 2.00 1 .00 2.00 1.50 1 .00 .70 .50 ?0.00 3.00 5.00 7.00 3.00 3.00 7.00 7.00 3.0u 7.00 7.00 7.00 7.00 3. CO ?.oo 3.00 s 3.00 3.00 3.00 2.00 .07 .15 .05 .50 .05 . 15 . 15 .07 .15 1.50 . 15 .15 .50 2.00 .20 .70 . 15 2.00 .50 .30 .70 .50 1.00 .30 .15 .15 1 .00 2.00 1 .50 2.00 .70 2.00 3.00 1.50 3.00 1 .50 2.00 1 .50 1 .50 .50 .70 Ca-pct. Ti-pct. s 5.00 7.00 7.00 3.00 .10 .10 .07 .15 .05 .07 . 10 .07 <.05 .07 .07 <.05 1.00 3.00 .07 .07 .05 3.00 .50 .10 .02 .20 . 10 .10 '.' .15 .10 3.00 3.00 1.50 7.00 7.00 2.00 7.00 10.00 3.00 5.00 2.00 1.00 7.00 10.00 3.00 s .300 .500 .500 .700 .100 .150 .150 .150 .050 .100 .150 .030 .100 .200 .070 .200 .150 .300 .100 .200 .300 .300 .300 .150 .150 .300 .150 .150 .100 .030 .200 .300 1.000 .150 .200 .500 .300 .300 .500 .300 .500 .500 .300 .500 .300 Mn-ppm Acj-ppm s 700.0 700.0 700.0 1 ,000.0 <10.0 50.0 10.0 700.0 <10.0 20.0 700.0 20.0 100.0 300.0 300.0 100.0 500.0 700.0 70.0 300.0 150.0 1,000.0 500.0 200.0 500.0 300.0 500.0 300.0 <10.0 700.0 1,500.0 1,000.0 1,500.0 2,000.0 1,000.0 1,000.0 1,000.0 1,000.0 1 ,500.0 1,000.0 1,000.0 1,000.0 1,500.0 500.0 700.0 s N N N N N N N N <. 5 N N 5.0 N N 7.0 <.5 N N 2.0 N N N N N N .5 N N N N N N N N N N N N N N N N »} N N As-ppm s N N N N N N N N N N N N N N N N N N N H N N N N N N N N N N N N N N N N N N N N N N N N N Au-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N b-ppm s 1 C N N N N 15 N 10 N 20 10 15 N N 10 N N <1 0 10 N N N 15 N 15 N N N 15 N N 10 10 N 10 N 10 N N N 10 N 10 20 10 Ba-ppm s 100 100 70 700 100 300 50 1,500 150 200 200 100 300 50 150 500 1 ,000 70 1,000 500 200 100 150 1CO 20 70 150 150 150 500 50 50 500 1DO 20 700 300 200 300 150 300 100 150 <2i"> 30 Be-ppm s s N N <1 . 0 N N N <1 . 0 N N 1.3 N <1 . D S <1.0 N <1 . 0 N <1 . 0 <1.0 N N < 1 . 0 <1 . 0 <1.0 <1.0 0.0 < 1 . 0 <1 . 0 <1 .0 N N N N 0.0 N N N N N N N N N <1 .0 Bi-ppm Cd-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N v N N N N N N N N N s N N" N N N N N N N N N N N N N N V N N N N N N N N N N N N N N N N N N N N N N N N N N N N Co-ppn s n 20 15 15 N N N 7 7 N 5 N <5 <5 5 7 7 10 <5 7 7 30 <5 N <5 <5 N N N 10 5 20 20 1 o 7 20 33 1C 3C 15 20 15 15 ID 5 Table 3. Semiquantitative spectrographic analyses of outcrop samples from the U.S. Virgin Islands.--Continued Sa rople Cr-ppm s Cu-ppm La-ppm s s Ph-ppm Sb-ppm Sc-ppm Sn-ppm s s s s Sr-ppm V-ppm W-ppm s ss ST002R STCOI4R ST005R STOD6R ST008R STC08RA STC'OBRP FT008PC ST008RD ST008RE STC08RI ST009RA STOD9RB ST009Rr ST009RD ST01 1R ST011R1 ST012R ST313R ST013RI STOK4R ST015R ST016R ST317R STC18R ST019R ST120P ST021R ST021RA ST021PR ST021RC ST022R ST023P ST">2<4P ST025P ST026R STO?71< ST028R ST029R ST030K ST031R STQ3I4F ST035R STG3fiR ST03SR 70 23 50 15 <10 N N <10 <1 0 <10 ft N N N N <10 N N 10 10 70 20 10 <1 0 <10 <10 <1 0 <1 0 N <10 50 20 <1 0 30 <10 10 30 10 20 15 20 <1 0 30 30 15 50 50 50 70 5 <5 <5 <5 15 5 N 7 15 <5 2C 15 20 15 20 700 100 70 20 <5 <5 15 <5 <5 <5 1,000 100 70 70 15 15 150 100 30 100 50 150 300 70 50 30 20 N N 20 N N V N N N N N N N N N N N N N N N N N <20 <20 <20 N ' N ft N N N <20 N <20 N <20 N <20 N N N N <20 N N N N N 5.0 5.0 5.0 N 5.0 5.0 N 10.0 10.0 N 20.0 15.0 N N 20.0 N N N N N N N N N N N N N N N N ft N N N N N N N N N <20 N N N N N N N N N N N N N N N N N N N N N N N N N N N N V N N N N N V N N V N N V N N N 20 15 30 7 <5 5 5 15 10 5 10 7 5 5 7 <5 10 5 10 15 20 20 5 <5 5 <5 5 <5 5 10 15 15 c 10 5 10 15 7 15 10 15 5 20 20 7 15 10 15 20 <10 N N 20 N <10 20 15 10 <10 100 20 10 <10 10 10 10 10 10 N 10 15 20 < 1 0 70 700 <10 < 10 <10 10 15 10 15 10 10 15 15 15 10 10 10 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 20 30 20 20 10 10 7 <5 5 10 < 5 <5 10 10 5 10 5 20 7 5 15 20 15 10 10 10 7 7 <5 7 20 30 20 20 7 30 30 15 20 20 30 20 3D 30 15 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N V N N 500 500 500 500 <100 N N 500 N N 500 N N <100 100 N 500 500 N 200 N 500 150 N N 100 V N N N 200 300 300 300 1,000 300 700 3CO 500 700 300 150 150 1,500 500 150 300 300 200 30 <10 < 10 50 30 30 50 15 30 30 30 300 70 200 30 70 300 200 20 10 10 30 < 10 10 < 10 10 70 100 150 100 100 mo 150 100 200 200 200 150 300 500 150 N N N N N N N N i N S N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N «I N N 15 15 20 50 30 20 30 N 10 20 <1C 15 50 20 30 30 10 15 20 10 15 10 20 30 20 20 20 15 10 1DO 20 15 50 <10 15 20 15 15 2D 15 15 20 15 15 20 N N N N N N N N V N N N N N 300 N N N N 1 ,000 N N N N <200 700 N N N N N N N 200 N N N N N N N N N N N Table 3. Semiquantitative spectrographic analyses of outcrop samples from the U.S. Virgin Islands.--Continues Sample Zr-ppm Th-ppm c s ST002R ST^OUR ST005R ST005R ST008R ST^OBRA STOD8RR STOOepn ST^DBRD ST008RE ST008RI ST"O9KA ST009RB ST009RC ST009RH ST01 1R ST01 1R1 ST012R ST013R ST013RI ST01UR ST015R ST016R ST017K ST018R ST019P ST020R ST021R ST021FA STC21RB ST021RC ST022R ST023P STT2UR ST02'SR 5T*> 2f;p STT27R STC2PR ST029R ST n 30R ST031R ?T03UR ST035P ST"36R ST038R 70 20 50 100 100 mo 100 30 30 70 50 2 0 100 100 50 50 50 30 100 50 10 30 50 100 100 70 50 50 70 20 100 15 50 10 30 5C 30 30 30 20 30 20 15 15 70 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N M N N N N N N N N N N N N N Table 3. Semiquantitative spectrographic analyses of outcrop samples from the U.S. Virgin Islands.--Continued Sample ST03«R STO<40R ST3U1R STOU1R1 STOU2R STOH3R STOUU6 STOU5R STOU6P STDU7R STOU8P ST0148RI STOU9R ST050R ST051R ST352R ST053R ST0514R ST055R ST056R ST057R ST057R1 ST?58R ST:59R STrSOR ST061P STC62H ST052R1 ST063R ST0514& ST0614P1 ST055F ST r ^6h ST057K STr.«58R ST^PR ST071P ST071R1 ST073P STC7<4R ST075R ST075R1 5TT76R ST078* ST07PR Fe-pct. Mg-pct. Ca-pct. Ti-pct. s 3.00 7.00 3.00 5.00 5.00 7.00 7.00 1.50 1.50 3.00 2.00 5.00 1.00 1.00 2.00 .50 .70 3.00 5.00 7.00 7.00 3.00 2.00 5.00 3.00 5.00 5.00 5.00 7.00 1.00 3.00 2.00 10.00 2.00 7.00 .70 3.00 3.00 7.00 1.00 1.50 5.00 7.00 1 .00 1 .50 s 1.50 1.50 1 .50 2.00 1 .00 2.00 2.00 .30 .70 1.50 .30 .07 .07 1.00 .70 .20 .50 .10 1.50 2.00 2.00 .70 1.00 2.00 .70 1.50 1.50 1.50 2.00 .20 .70 .50 2.00 .50 2.00 .20 .05 .10 5.00 .15 .30 1.00 5.00 .70 .70 s 3.00 2.00 5.00 3.00 .70 3.00 3.00 .20 .20 3.00 .70 <.05 .07 .30 .50 .07 .07 <.05 3.00 3.00 3.00 1.50 3.00 5.00 1.50 1.50 3.00 2.00 ' 7.00 : ' 1.50 3.00 .50 5.00 .50 .20 <.05 .07 .07 1.50 .20 .15 .70 5.00 . 15 .10 s .300 1.000 .300 .500 .500 .500 .700 .300 .200 .300 .100 .150 .200 .150 .200 .150 .200 .100 .300 .500 .500 .300 .200 .300 .300 .300 .300 .300 .500 .100 .300 .150 .100 .200 .500 .070 .300 .200 .300 .200 .200 .500 .500 .200 .150 Mn-ppm Ag-ppm s 1,000.0 1,500.0 700.0 1,000.0 700.0 1,000.0 1,500.0 500.0 500.0 700.0 300.0 150.0 20.0 500.0 700.0 70.0 300.0 20.0 1,000.0 1,000.0 1,000.0 1,500.0 1,000.0 1,000.0 1,000.0 1,000.0 1,000.0 1,000.0 1,500.0 500.0 1,000.0 500.0 1,000.0 1,000.0 1,000.0 150.0 <10.0 50.0 1 ,000.0 300.0 200.0 1,000.0 1,000.0 300.0 500.0 s N N N N N N N N 15.0 N N 3.0 N N N N N N N N N N N N N N N .5 7.0 N N N N N N <.5 10.0 2.0 N N N N N N N As-ppm s N N N N N N N N N N N N H N N N N N N N N N N N N N N N N N N N N N N N N 300 N N N N N N N Au-prm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N B-pprn s N 10 20 10 10 15 N 15 10 10 <10 10 N 10 20 N N N 10 15 10 10 10 10 N 10 <1 0 <1 0 10 <10 10 10 50 N N 20 15 20 N N N 20 10 N N7 Ba-ppm Be-ppm s 200 1,000 200 230 70 1,000 200 150 50 300 1,000 100 <20 20 100 200 200 700 50 150 300 1,000 150 300 50 200 150 700 50 150 500 200 <20 1,000 1,000 100 700 1,500 <20 150 20 1*0 N 50 <20 s N <1 . D N N N N <1 . 0 <1 . 0 <1 . 0 <1.0 1.0 N <1 .0 <1 .0 1.D <1.0 <1 . D N N N N <1 . 0 <1 .0 N N N <1 . D N N N7 <1.0 N N <1 . 0 N <1.0 N N N V <1.3 <1 .0 N < 1 . 0 <1 . 0 Bi-ppm Cd-ppm s N N N N N » N N N N 70 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N S N N N N N N N N N N N N H N N N N N N N N N N N N N N N N N N N N N N s N N N N N N N N N Co-ppm s 7m 10 20 20 20 20 5 5 10 5 5 N N <5 N <5 N 10 20 20 <5 10 10 10 10 10 10 20 <5 5 7 30 5 20 <5 <5 <5 50 N N 7 3D 5 5 Table 3. Semiquantitative spectrographic analyses of outcrop samples from the U.S. Virgin Islands.--Continued Sample Cr-ppin s Cu-ppm La-ppm s s Mo-ppm s Nb-ppm Ni-ppm s s Pb-ppm Sb-ppm Sc-ppm s s s Sn-ppm Sr-ppm V-ppm W-ppm s s s s ST039R ST040R STOU1P STOU1R1 ST042R ST043R STOUUR STOU5R STOU6R STOU7R STDU8R STOK8RI STOU9P ST")50R ST051R ST052R ST051R ST05UR ST055R STD56R ST057R ST057R1 STG58R ST059R ST050R ST"MR ST">62R ST062R1 ST063R ST06UR ST^6UR1 STC65F ST066R S-TC67R ST068R ST^9h ST071R ST071R1 ST773R sir. 7 UP ST075R SI ">75H1 ST076h ST078H ST"79R 10 <1 0 30 30 <13 N <1 0 N <1 0 20 <10 70 N N N N N <1 0 <10 <10 N <10 10 10 <10 10 15 30 20 <10 <10 N 10 <1 0 15 N 10 10 150 N N N 150 N N 30 150 70 100 100 150 70 <5 7 20 200 70 30 15 <5 <5 N 30 70 150 200 N 20 50 70 70 50 150 70 10 20 5 100 <5 100 <5 15 15 500 10 15 <5 30 15 <5 <20 20 N N <20 V N <20 <20 <20 <20 N N <20 <20 <20 <20 N N N N 20 <20 N <20 N <20 <20 ' N r<20 <20 <20 N N N N N V N <20 <20 <20 N <20 <20 N N N N N N N N N N N 20.0 N N N N N N N N N N N N N N N N N N N N N N N N 15.0 10.0 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N K N N N N N N N N N N N N N N N N N N N 5 <5 15 20 <5 5 7 <5 <5 15 5 10 5 <5 5 <5 <5 <5 5 15 10 <5 5 10 5 10 10 20 10 7 7 10 15 5 15 5 5 5 70 5 <5 <5 70 5 5 < 1 0 10 < 10 10 <10 10 10 15 15 10 20 20 <10 15 10 <10 10 < 10 10 N 10 10 10 < 10 <10 <10 10 10 10 N 20 N <10 15 10 15 200 200 <10 <10 N 10 10 10 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N <100 N N N N N \ N 20 20 20 20 30 30 30 10 10 15 <5 <5 10 7 10 7 7 F> 20 30 30 <5 15 20 15 30 20 20 30 5 10 7 30 5 30 5 10 7 30 7 7 2C 30 7 7 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 500 500 300 500 <100 300 300 100 150 300 700 N N <100 <100 <100 N N 300 200 200 700 500 200 N 200 3CO 300 200 200 <100 <100 200 500 300 N N 200 150 N N 200 300 N V 150 150 300 300 200 300 300 70 < 10 200 50 100 10 20 10 10 10 10 300 500 300 50 200 150 100 150 200 200 300 50 30 150 300 70 200 10 70 70 300 r o 20 K 0 300 20 30 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N s- N N N N N N N N N 15 3D 10 15 20 20 30 2^ 20 2n 10 N 30 20 50 20 20 10 15 20 20 20 20 15 30 20 2"1 30 20 N 30 <1 0 2^ <1 0 50 15 50 20 15 2T 20 50 2^ 20 20 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Table 3. Semiquantitative spectrographic analyses of outcrop samples from the U.S. Virgin Islands.--Continued Sample Zr-ppm Th-ppm s s ST139R STOUOR STOU1R STOUIRI STPU2R STCU3R STOUUR ^T1U5R STOUSR STCU7R STOU8R STGU8RI STOU9R ST050R ST051R ST052R ST053R ST05UR ST055R ST056R ST^57R ST057R1 ST058R ST059R ST060R S T 0 6 1 R STQ52R ST062R1 STn63R STC5UR sioeaRi ST065R STOR6R ST067R ST058R ST^SQR STC71K ST071R1 5T073R ST^74H ST075h ST075R1 STC7^R 5T078R ST079R ID 100 20 30 20 30 100 70 50 30 3D <10 100 70 100 70 70 30 15 20 20 100 30 30 50 20 70 50 3D 15 100 10 15 30 30 30 70 70 10 50 30 200 20 30 30 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N K N N N N N Table 3. Semiquantitative spectrographic analyses of outcrop samples from the U.S. Virgin Islands.--Continued Sample ST082R STC83P STD8HR ST085R ST087R ST039R STDPOR ST092R ST093R ST09UR ST09UR1 ST^SK STD96R ST098R ST101R ST102R ST103R ST10UR ST105R ST106R ST1D7R ST108R 5T1 ?9R ST110R S111 1R ST112H ST113R ST11UR ST115R ST116R ST117R 5T11BR ST119R ST120R ST2DOR ST201R ST202R ST203H ST20UR ST205R ST206R ST207R ST208P ST209R ST210R Fe-pct. Mg-pct. s 5.00 2.00 5.00 5.00 3.00 3.00 7.00 7 .00 7.00 7.00 .70 7.00 7.00 5.00 2.00 5.00 7.00 5. DO 3.00 7.00 7.00 3.00 7.00 2.00 1 .00 7.00 7.00 1.50 1.50 2.00 1.00 7.00 5.00 2.00 5.00 10.00 1 .00 5.00 5.00 5.00 1.00 1.50 .70 1 .00 7.00 s 2.00 .70 1 .50 .70 .70 .70 1 .50 1 .00 1 .50 1 .50 1.00 2.00 1.50 3.00 .70 3.00 5.00 1 .50 1 .50 3.00 3.00 1 .50 1.50 1.00 .15 5.00 3.00 .30 .50 .20 .05 3.00 . 15 .50 2.00 .50 .1C 3.00 3.00 3.00 .50 1.00 1 .00 1 .00 2.00 Ca-pct. Ti-pct. s 3.00 1.00 3.00 .70 1.50 1.00 1 .50 1.50 2.00 7.00 20.00 2.00 2.00 3.00 .70 3.00 3.00 7.00 15.00 7.00 5.00 7.00 3.00 20.00 .20 5.00 5.00 .20 .30 / , ' .07 <.05 5.00 .10 .30 5.00 .07 .10 5.00 7.00 7.00 2.00 2.00 1.50 3.00 3.00 s .300 .300 .300 .300 .300 .300 .300 5.000 .300 .500 .070 .500 .500 .300 .200 .300 .300 .300 .300 .500 .500 .300 .500 .150 .150 .500 .700 .200 .300 .030 .030 .500 .200 .200 .300 .200 .300 .500 .200 .300 .300 .300 .200 .300 .500 Mn-ppn\ s 700.0 700.0 300.0 300.0 1,000.0 700.0 1,000.0 1,000.0 1 ,000.0 1,000.0 700.0 1,000.0 1,000.0 1,000.0 500.0 1,000.0 1,000.0 1,000.0 1,000.0 1,500.0 1,000.0 700.0 700.0 1,000.0 500.0 5,000.0 1,500.0 500.0 500. C 300.0 70.0 1,500.0 20.0 700.0 1,500.0 150.0 20.0 1,500.0 1,500.0 1,500.0 1 ,000.0 1,000.0 700.0 700.0 1,500.0 Ag -ppn\ s N N 2.0 N N 2.0 N N N N N N N N N N N N N N N N N N K N N N N 200.0 200.0 <. 5 3.0 N N 1.5 100.0 N N N N N N N N As-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 300 N N N N N N N N N Au-ppn\ s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 20 15 N N N N N N N N N N N N N N B-ppm s N 20 20 <10 15 N 10 10 20 70 N 20 20 N <10 N N N N N N 30 15 N 20 15 20 N N <1 0 <10 N <10 N 10 <10 10 N 10 <10 5D 50 70 7D N Ba -ppm s 500 200 300 20 500 20 150 70 150 100 N 100 70 150 70 <20 100 1 ,000 300 200 3CO 700 700 700 1 ,000 200 100 500 150 30 20 100 70 70 30 500 300 150 300 150 200 500 300 300 150 Re-ppm s N < 1 .0 N N <1.0 <1.0 N N N N N N N N <1.0 N N <1 .0 N N N N <1 . 0 <1 . D <1 .0 N N <1 .0 <1 .0 N <1.0 N <1 . 0 <1 . 0 N <1.0 N N N N <1.D < 1 . 0 0.0 <1 .3 N Bi-ppn\ Cd-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 15 N N 70 70 N N N N N N N N s N N N N N N N N N N N N N N N N N N N N N N N N * N N »J N N N N N N N N N N N N N N N N N Co-ppn s 10 7 30 10 10 7 30 15 30 30 7 20 30 30 5 30 50 20 1C 20 20 10 15 c. c. 30 20 5 f, 7 <5 30 N N 30 N c, 3 r 15 20 5 5 5 5 10 Table 3. Semiquantitative spectrographic analyses of outcrop samples from the U.S. Virgin Islands.--Continued CO Sample ST082R ST083R ST08UR ST085P ST087R STOR9R STOQOR ST092R ST093R ST09UR ST094R1 ST095R ST096R ST098R ST101R ST102R ST103P ST10 C.R ST106R ST107R ST108H ST109R ST110R ST111R ST112R ST113R ST115H ST116R ST117R ST11PR ST119R ST120R ST200R ST201R ST202R ST203R ST20UR ST205R ST206R ST207R ST208R ST2D9R ST210R ppm N :io 30 N :io N .10 N 20 20 15 20 10 30 N 30 50 20 30 15 50 70 30 30 :io 10 10 N N 10 20 20 :io n Q 30 no N 20 30 50 N :io N N :io Cu-ppm s 50 <5 100 20 30 30 150 200 150 200 15 150 150 200 <5 30 30 150 100 70 30 50 200 <5 15 70 150 5 <5 70 15 150 300 15 20,000 700 100 50 100 70 5 10 5 7 5 La-ppin s N <20 N <20 <20 <20 N <20 N N <20 N N N N N N <20 N N <20 <20 <20 <20 N N N N <20 ', U N N N N N N N N <20 N <20 <20 N <20 N flo-ppn s N N N N <5.0 N N N N N N N N N N N N N 7.0 N N N N N N N N N N N 15.0 N 30.0 N N 150.0 100.0 N N N N 7.0 N N N Nb-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N V N N N N N N N N N N N Ni-ppm s 5 <5 15 <5 5 <5 10 <5 15 15 <5 15 15 30 <5 20 70 15 10 10 30 30 20 10 5 20 10 5 <5 7 5 1b <5 <5 20 <5 5 15 10 20 <5 <5 <5 <5 <5 Pb-ppm s 10 < 10 10 10 10 <10 10 10 < 1 0 <10 N <10 < 10 < 10 <10 <10 <10 20 10 10 10 15 30 N 20 10 10 N < 10 10 <10 10 1,000 10 10 300 500 < 10 N 10 < 1 0 < 1 0 < 10 <10 10 Sn-ppm Sr-ppm V-ppm W-ppm s s s s 20 10 30 20 20 15 30 30 30 30 7 3C 30 30 10 30 30 20 20 30 30 2C 30 7 5 30 30 7 7 5 <5 30 20 10 30 30 20 3C 7 7 5 7 10 N N N N N N N N N N N N N N K N N N N N N N N N N N N N N N N N 30 N N 300 <100 500 200 500 N 700 500 150 200 150 200 150 500 <100 2CO 300 500 2,COO 700 300 500 500 500 500 500 150 100 <100 N N 300 <100 150 <100 N N 500 150 200 150 N 200 700 200 70 300 300 100 50 300 300 300 500 70 500 500 300 30 300 300 200 2CO 500 300 200 200 70 70 500 300 30 30 150 30 300 300 30 300 300 300 30 30 20 30 150 Y-ppm s 30 30 10 15 20 20 20 20 15 15 <10 20 20 15 10 15 15 20 20 2C 3C 20 20 15 N 15 30 10 20 N N 20 30 20 20 10 10 15 <1 0 <10 2T 20 15 30 20 Zn-ppm s N N N N N S N N N N N N N N N N N N N N N N N N N N N N N N N N 20C N 1 ,000 N N N N N N N N N N Table 3. Semiauantitative spectrographic analyses of outcrop samples from the U.S. Virgin Islands.--Continued Sample ST083R ST08UR STC85R ST087R ST090R STC92F. STG93R ST09UR1 ST095R STT96R ST1 12P ST103R ST10UR ST105R ST107R ST108R ST1 ?9P ST110H ST111R ST112R ST113R ST11UR ST115P ST11PR ST117R ST118R ST119R ST120R ST200R ST201R ST2D2R ST203R ST20UR ST205R ST206R ST207R ST208R ST209R ST210R Zr -ppm s 30 100 30 50 30 3? 30 30 15 15 N 15 2D 15 50 10 10 70 20 15 100 70 70 20 30 15 30 50 70 N <10 30 50 50 15 SO 70 15 <10 10 70 70 50 70 70 Th-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Table 3. Semiquantitative spectrographic analyses of outcrop samples from the U.S. Virgin Islands.--Continued to CD Sample ST21 1R ST211R1 ST211RX ST212R ST213P ST21HR ST21UR1 ST215R ST215R1 ST216R ST217P ST218P ST219R ST220P ST222R ?T223R ST22WR ST22UR1 ST225K ST?2f R ST226R1 ST227R1 ST228R ST229R ST230R ST231R ST232R SJ001R SJ r'02R SJC03R SJ003RA SJOOUR SJ005R SJ006R SJ007P SJ008P SJ009R SJ010P SJ012R SJ013R SJ01UR SJ016R SJ017R SJ017Rft SJ017RX Fe-pct. Mg-pct. s 5.00 7.00 5.00 .50 2.00 1.00 5.00 1.00 10.00 .70 7.00 5. CO .70 .70 .30 1.00 1.50 7.00 2.00 1.00 7.00 3.00 1 .00 .70 1 .00 7. 00 7.0C 7.00 3.00 7.00 5.00 10.00 7.00 7.00 5.00 7.00 10.00 2.00 7.00 5.00 3.00 3.00 7.00 1.50 10.00 s 1.50 .10 .10 .07 .10 .70 5.00 .30 2.00 .20 2. CO 3.00 .30 .30 .30 .50 .30 5.00 .50 .15 2.00 .30 .30 .20 .30 1 .00 5.00 3.00 1.50 2.00 3.00 1 .00 3.00 2.00 2.00 2.00 2.00 .50 3.00 2.00 1.00 .70 3.00 .30 2.00 Ca-pct. Ti-pct. s 5.00 .07 <.05 .07 <.05 .10 5.00 .10 3.00 . 10 5.00 5.00 .07 .07 .10 .10 .10 5.00 .20 .20 3.00 .07 3.00 .70 1.00 5. CO 7.00 3.0C ' 3.00 r "5.00 10.00 20.00 2.00 7.00 5.00 10.00 5.00 1.50 15.00 10.00 3.00 15.00 5.00 .30 3.00 s .300 .150 .150 .200 .150 .200 .500 .300 .700 .200 .700 .300 . 150 .150 .150 .200 .200 .500 .300 .200 .700 .200 .150 .100 .100 .500 .500 .500 .500 .500 .300 .700 .500 .500 .500 .500 1.000 .150 .500 ' .300 .300 .300 .500 .300 .700 Mn-ppm s 2,000.0 30.0 20.0 50.0 20.0 1,000.0 1,500.0 100.0 1,500.0 300.0 1,500.0 1,000.0 30C.O 300.0 150.0 150. C 70.0 1,000.0 300.0 150.0 1 ,000.0 150.0 700.0 300.0 500.0 1,000.0 1,500.0 1,000.0 700.0 1,500.0 700.0 1,000.0 1,000.0 1,500.0 1,500.0 1,500.0 1,500.0 300.0 1,500.0 2,000.0 500.0 500.0 2,000.0 200.0 1,000.0 Ag-ppm s N .7 N N 1.5 5.n 7.0 1.5 N N N N N N N N N N N N N N N N N N N N N N N V N N N N N N N N .7 N N N N As-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Au-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N P-ppm s 15 N N 10 10 15 N 15 N <15 00 O 0 N N N 1C N 20 00 N N 70 5C N 10 00 N N N N 50 N N N N N N N N N N N N <10 N Ba-ppm s 200 1,000 1 ,000 100 500 150 200 150 200 200 150 150 150 150 200 200 200 50 500 500 200 500 150 <20 150 100 300 200 30C 100 150 <2C 100 200 100 150 500 500 300 200 300 200 70 300 1,000 Be-ppm s 0.0 N <1 .0 <1 . 0 0.0 0.0 N <1 . 0 N 0.9 N N O . 0 <1 . 0 1.0 O.D O . 0 N O . 0 0.0 N 1.0 O . 0 <1 . 0 0.0 N N N N N N N N N N N 0.0 0.0 N 0.0 N N N O.D N Bi-ppm Cd-ppm s N 70 20 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 10 N N N N N s N N N N N N N N N N N N N N N N N N N N N N N N N S N N N N N K N N N N N N N N N N N N N CO-PPB S 7 <5 5 <5 <5 <5 30 N 30 N 30 20 N N N <5 <S 30 K N 20 <5 <5 N <5 20 30 2 r 20 15 30 7 30 30 10 20 30 7 20 10 7 5 20 7 30 Table 3. Semiguantitative spectrographic analyses of outcrop samples from the U.S. Virgin Islands.--Continued Satiple ST211R ST211R1 ST211RX ST212R ST213R ST21UR ST214E1 ST215R ST215R1 ST215R ST217R ST218R ST219R ST220R ST222R ST223R ST22UR ST22UR1 ST225R ST226R ST226R1 ST227P1 ST228R ST229R ST230R ST231R ST232R SJ001F SJ002R SJ003R SJ003RA SJ004R SJ005R SJ006R SJ007P SJ008R SJC09R SJ010R SJC12R SJ013R SJ014R SJ016R SJ017R SJ017RA SJ017RX Cr-ppm s N N N N <10 <10 100 N N N 10 50 <10 N N <10 <10 100 <10 N <1 0 <1 0 V <1 0 <10 20 50 30 20 20 70 20 70 20 <10 30 N <10 100 20 10 <10 <1 0 N 10 Cu-ppm s 10 70 15 15 30 15 100 10 200 <5 200 100 <5 N <5 20 <5 100 <5 <5 150 50 5 <5 <5 150 200 100 150 70 100 50 100 300 50 20 200 150 200 70 70 15 100 20 300 La-ppm s N N N <20 <20 <20 <20 N N <20 N N N <20 <20 <20 N N N <20 N N <20 20 <20 N <20 <20 ' N f " N <20 V 20 N N <20 <20 N N <20 N N <20 N Po-ppm s N <5.0 10.0 N N N N <5.0 N N N N N N N N N N V N N 7.0 N N N N N N N N N N N N N N N N 7.0 N 20.0 N N N N Nb-ppm s N N N N N N N N N N N N N N N N N N N N N N N V N N N N N N N N N N N N N N N N N V H N N Ni-ppffl s <5 5 5 <5 <5 <5 70 <5 10 30 15 20 <5 <5 <5 <5 <5 50 <5 <5 7 5 5 <5 <5 15 50 20 20 10 20 10 50 15 <5 20 7 10 50 10 5 5 10 5 15 Pb-ppm Sb-ppm Sc-ppm s <10 15 30 <10 30 10 < 10 10 15 N 10 < 10 <10 N N N N 10 N 15 <10 20 15 N N 00 <10 15 10 00 10 30 15 20 15 10 15 15 10 10 10 <10 10 10 10 s N N N N N N N N N N N N N N N N N N K N N N N N N N N N N N N N N N N N N N N N N N N N N s 5 7 7 10 7 7 30 7 30 7 30 30 7 7 7 7 7 30 7 7 30 7 7 5 5 30 50 30 2C 30 30 30 30 30 20 30 30 <5 30 30 20 15 50 5 50 Sn-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Sr-ppm s 700 N N <100 N 150 5CO 100 500 N 50C 500 N N N N N 150 150 150 500 N <100 <100 200 200 500 500 500 300 150 1,500 200 500 500 300 500 300 500 300 200 150 300 150 200 V-ppm W-ppm s 100 20 20 10 10 30 200 30 300 15 500 300 10 oo 00 30 30 500 30 30 300 30 30 10 20 300 500 300 300 300 300 500 300 500 300 300 500 70 500 300 300 100 500 30 700 s N N N N N N N N N N >j N N N N N N N N N N N N N N J N N N N N N N N N N N N N N N N N N N Y-ppm s 20 20 20 15 15 15 15 20 20 15 30 1 0 15 15 20 20 20 15 20 15 20 20 15 10 15 15 15 20 20 15 10 30 20 20 20 20 50 50 20 20 20 20 20 20 30 Zn-ppm s N N N N N 700 200 N N N N N N N N N N N N N N 200 N N N N N N N N N N N N N N N N <200 N N N N N N Table 3. Semiquantitative spectrographic analyses of outcrop samples from the U.S. Virgin Islands.--Continued to to Sample Zr-ppm Th-ppm s s ST211R ST211R1 5T21 1RX ST212R ST213R ST21UR ST21UR1 ST215R ST215R1 ST216R ST217P ST218B ST219R ST22CR ST222R 3T223R ST22UR ST22UH1 ST725R ST226R ST226R1 ST227R1 FT228P ST?2QR ST230H ST231R ST732R SJ001R SJ002R SJOD3R SJOD3Rft SJOOUR SJ005R SJ006R SJ007P SJ008R SJ009R SJ010R SJ012R SJ013R SJ01UR SJ016R SJ017R SJ017RA SJ017RX 70 70 7D 70 70 73 20 mo 30 50 SO 15 70 70 70 70 70 20 100 70 50 100 70 10 30 15 20 100 50 20 15 70 50 70 15 30 100 150 30 15 50 50 10 50 50 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N K N N N N N N N N N N N N Table 3. Semiquantitative spectrographic analyses of outcrop samples from the U.S. Virgin Islands.--Continued to CO Sample SJ320R SJf)2<4R SJ026R SJ027R SJ028E SJ028RA SJ029R SJ030R SJ031R SJ032R SJ033R SJ03UR SJ^3URA SJC'35 SJ035RV SJ-'36F SJ037R SJ040R S J n U 0 H A SJr 40RB sjo^opr SJOU1RA SJO<44h SJOUURT SJ"U4RV SJOU7P SJOU7RV SJOU8R SJOU8R1 SJOU9R SJ049R1 SJ050R SJ051R SJ051R1 SJ052R SJ052R1 SJ053R SJ05UR SJD55R SJ056R SJ057R SJ057R1 SJ058R SJ059R SJ060R Fe-pct. Hg-pct. s 2.00 2.00 1 .50 5.00 2.00 1.50 2.00 5.00 5.00 2.00 7.00 3.00 .70 2.00 .1C 7.00 2.00 .70 1 .00 .30 .70 3.00 2.00 1 .50 7.00 7.00 1 .50 1 .00 5.00 2.00 3.00 1 .00 1 .00 7.00 2.00 3.00 7.00 7.00 3.00 7.00 7.00 .30 1 .50 3.00 5.00 s 1 .00 1.50 .15 5.00 .70 .02 1 .00 3.00 2.00 1.50 5.00 1.00 1.00 1.50 .05 7.00 1 .00 .70 .70 .03 .15 .50 .50 .15 .20 7.00 .50 .50 5.00 .30 1.00 1 .00 .50 .15 .07 .15 3.00 3.00 1.00 3.00 5.00 .05 .50 5.00 .15 Ca-pct. Ti-pct. s 2.00 .20 .30 7.00 1 .00 <.05 .50 3.00 2.00 .15 5.00 2.00 1.00 .20 <.05 3.00 3.00 .50 .15 .2C .30 .50 .07 1 .00 .07 7.00 20.00 .30 .30 r ' 2.00 .30 .10 .05 <.05 <.05 <.05 3.00 5.00 3.00 7.00 7.00 .07 .30 5.00 .07 s .300 .300 .300 .500 .200 .005 .300 .500 .500 .300 .300 .200 .200 .200 .002 .300 .300 .100 .150 .003 .200 .300 .200 .100 .200 .500 <.002 .300 .500 .200 .200 .150 .150 .200 .100 .150 .700 .700 .300 .500 .500 .050 .300 .300 .200 Mn-ppm Ag-ppm As-ppm s 700.0 500.0 700.0 2,000.0 500.0 10.0 700.0 2,000.0 1,500.0 500.0 1,COO.O 700.0 300.0 700.0 70.0 1,500.0 500.0 500.0 500.0 .7 150.0 300.0 1,000.0 1,000.0 70.0 1,000.0 2,000.0 200.0 1,000.0 700.0 700.0 300.0 300.0 50.0 10.0 20.0 2,000.0 2,000.0 1,000.0 1,000.0 1,500.0 150.0 200.0 1,500.0 15.0 s N N N N N N N N N N N N N N N N N N N N N N N N <.^ N N N N N N 3.0 <.5 <.5 3.0 N N N N N N N N N .7 s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 300 Au-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N B-ppm s 10 N N N <1C <10 N N N N N N 15 N N N 10 N N <10 <10 N 70 15 30 N N 00 N 20 N 00 10 N 10 15 N N <10 N N OO N N 10 Ba-ppm s 150 30 200 70 150 3C 30 <20 30 150 20 20 100 70 <20 <20 150 100 N <20 300 30 200 20 700 100 N <20 20 100 150 100 200 300 300 300 50 150 150 20 50 N 70 <20 5,000 Be-ppm s V N N N <1.0 N <1.0 N N N N N N <1.D N N N N N N 0.0 0.0 0.0 H N N N N N 1.0 0.0 <1.D <1.0 N N N N N <1.0 N H N N N N Bi-ppm Cd-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Co-pp« s 5 7 N 30 <5 5 S 20 5 <5 30 5 N 5 N 20 <5 N N N N N N 7 N 20 5 5 <5 N N <5 N N N N 20 20 <5 30 30 N <5 20 N Table 3. Seniquantitative spectrographic analysps of outcrop samples from the U.S. Virgin Islands.--Continued to Sample SJ020P SJ02UP SJ026R SJf>27P SJ028P SJ028KA SJ029R SJ030R SJ131R SJ032R SJ033R SJ034R SJ034RR SJ035 SJ035PV SJ n 36R SJ037R SJOUOP SJiUORS SJOUORR SJOUORC SJOU1RA SJOUUR SJOUURF SJOUURV SJOU7R SJOU7FV SJOU8R SJOU8R1 SJOU9R SJOU9R1 SJ050R SJ051F SJ051R1 SJ052R SJ052R1 SJ053R SJ05UR SJ055R SJ056R SJ057P SJ057R1 SJ058K SJ059R SJ060R Cr-ppm £ 10 N 10 500 N N 10 20 15 <1C 500 100 2C <1 0 10 200 <1 0 N N N N <10 10 N 15 100 N <1 C N N <10 70 N <1 0 <10 <10 20 70 <1 9 50 100 <1 0 <1 0 300 N Cu-ppm s 15 10 5 10 5 70 15 30 50 <5 50 30 10 20 <5 100 <5 7 <5 5 <5 <5 70 10 70 70 5 15 150 10 <5 20 200 300 15 10 70 150 15 70 100 <5 <5 70 500 La-ppm s N N <20 <20 N N <20 N N <20 N <20 <20 <20 <20 N N <20 <20 <20 <20 <20 N N N <20 N N ' N <20 N N N N <20 N <20 N <20 N N N N N N Mo-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 20.0 15.0 15.0 N N N N N N N N 7.0 Nb-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Ni-ppm s 5 7 10 200 5 7 5 20 15 5 150 30 7 5 5 70 5 <5 <5 5 5 5 <5 5 <5 50 <5 10 <5 5 5 10 7 5 5 <5 10 30 5 30 30 <5 <5 70 <5 Pb-ppm s 00 10 10 15 10 00 00 10 10 10 00 < 10 10 00 00 20 00 <10 10 00 15 15 15 < 10 10 10 00 15 300 10 00 20 <10 15 15 10 15 10 10 10 00 00 N 00 200 Sb-ppm Sc-ppir s N N N N N N N K N N N N N N N N N N N K N N N N N N N N N N N N N N N N N N N N N N N N 100 s 7 10 7 30 10 N 15 30 20 10 30 10 5 10 N 50 10 7 7 N 7 7 10 <5 7 30 <5 10 20 10 10 10 7 7 <5 5 30 30 15 30 50 <5 7 30 7 Sn-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Sr-ppm V-ppm s 150 N N 5CO 100 N 150 300 150 N 150 150 000 N N 150 N 000 N N 150 N N 150 N 1,000 300 N 150 150 <100 N N N N N 500 300 300 150 200 N N 150 000 s bO 50 50 300 100 30 50 500 200 50 300 50 150 50 10 300 30 10 20 30 20 30 00 50 100 500 70 70 70 30 00 50 00 30 15 30 500 500 70 500 500 50 30 150 300 W-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Y-ppm s 20 20 20 20 20 N 20 15 20 20 15 20 N 20 N 15 20 15 20 N 15 20 20 N 20 20 15 20 30 50 30 15 20 20 15 20 20 20 20 20 15 N 20 15 00 Zn -ppm £ N N N <200 N N N N N N N N N N N N N N N N N N <200 N 200 N N N 1,000 N N 200 N N N N N N N N N N N N 1 ,000 Table 3. Semiguantitative spectroqraphic analyses of outcrop samples from the U.S. Virgin Islands.--Continued Sanple Zr-ppm Th-ppm s CO CJ1 SJ020F SJ02UK SJ026R SJ027P SJ02RR SJ028RA SJ029R SJH30R SJC31P SJC32R SJT33K SJ034R SJ'IURA SJC35 SJG35RV S J o 3 f R SJC37R SJGUOR SJT'UOKA SJDUORR SJ040RC SJOU1RA SJOUUR SJOUURF SJOU4RV SJDU7R SJOU7RV SJOU8R SJ048R1 SJOU9R SJQI49R1 SJ050R SJ051R SJ051R1 SJ052R SJ0^2R1 SJC53R SJ05UR SJ055R SJ056R SJ357R SJ057R1 SJ058R SJ059R SJ060R 70 70 100 50 50 N 70 20 50 70 20 150 20 100 N 15 70 50 50 10 50 70 70 10 70 30 N 30 70 100 100 30 30 50 30 70 30 50 70 15 <10 <10 50 10 50 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N F) N N N N N N N N N N Table 3. Semiquantitative spectrographic analyses of outcrop samples from the U.S. Virgin Islands.--Continued CO CO Sample SJC61R SJG62R ?J^53B SJ06UR SJC5UR1 SJ?65R SJ065P1 SJP56P SJ0^6H1 SJC68P SJC.59R SJ07CR SJ071R SJ073R SJ07JJR SJ075R SJ076P SJ077R SJC78R SJ079R SJ080R SJ081R SJ082R SJ086R SJ087R SJ088R SJ089R SJ090R SJ091P SJ091R1 SJ091R10 SJ091R11 SJ091R12 SJC91R13 SJ091R15 SJ091R16 SJ091R17 SJ091H18 SJD91P2 SJ091R3 SJ091RU SJ091R5 SJ091R6 SJ091K7 SJ091R9 Fe-pct . Mg-pct . s 2.00 1.00 1.50 1.50 >20.00 15.00 3.00 15.00 1.50 2.00 .70 5.00 5.00 5.00 2. CO .70 7.00 3.00 5.00 3.00 5.00 5.00 5.00 1.50 2.00 3.00 7.00 5.00 7.00 7.00 3.00 10.00 7.00 5.00 7.00 1C. 00 7.00 .50 7.00 >20.00 7.00 5.00 2.00 2.00 7.00 s .10 .50 .30 .50 <.02 .03 .30 .05 .20 1 .00 .20 3. 00 5.00 5.00 .70 .30 2.00 2.00 3.00 2 *°°? 2.00 3.00 5.00 1.00 .20 2.00 1.50 1.50 3.00 .50 .30 .50 1.50 1.50 2.00 1.50 1 .50 .05 3.00 .20 1.50 1.00 1.00 .50 .30 CTa-pct. s .10 .10 .20 <.05 N N N <.05 <.05 .30 . 15 10.00 5.00 7.00 1.50 .07 2.00 1.00 5.00 3.00 10.00 .30 .70 .20 3.00 3.00 5.00 3.00 ' 15.00 : -15.00 20.00 3.00 1.00 10.00 15.00 15.00 15.00 .30 15.00 .70 15.00 15.00 20.00 20.00 .70 Ti-pct. s .200 .200 .200 .150 .500 .150 >1 .000 .100 .150 .200 .200 .300 .300 .300 .300 .100 .500 .300 .300 .300 .300 .500 .300 .200 .200 .300 .500 .500 .010 .200 .007 .150 .700 .070 N N .500 .070 .150 .002 .500 .200 .030 .300 <.002 Mn -ppm s 30.0 100.0 200.0 5,000.0 200.0 20.0 <10.0 50.0 15.0 700.0 100.0 1,500.0 1 ,500.0 1,500.0 1,000.0 150.0 700.0 700.0 1,000.0 700.0 1,000.0 1,000.0 2,000.0 700.0 1,000.0 700.0 1,000.0 1,000.0 >5, 000.0 3,000.0 >5, 000.0 >5, 000.0 1,500.0 >5, 000.0 >5, 000.0 >5, 000.0 1,500.0 300.0 3,000.0 300.0 1,500.0 1,000.0 >5, 000.0 5,000.0 >5, 000.0 ftg-ppm s N N N N 5.0 200.0 7.0 N 150.0 N N N N N N N N N N N N N N N N N N N N N N 3.0 N N N N N N N 30.0 N .5 N N N Rs-ppm s N N N N N N N 300 N N N N N N N N N N N N N N N N N N N N N N N 500 N N N N N N N N N N N N 1,500 Ru-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N B-ppm s 00 10 10 30 N N 50 N 15 2A N N N <1 0 15 N <1 0 N N N N N N N 30 N N 15 N N N 30 20 N N N 15 20 N N N 15 N N 30 Ba-ppm Be-ppm s 100 300 300 300 100 >5,000 >5,eoo 50 3,000 500 30 150 150 20 100 150 200 100 50 50 100 N 30 50 50 500 500 1,000 N N N 70 3,000 N N N 500 30 70 N N N 300 30C N s N <1 . D <1 . D <1 . D N N N <1 . D <1 . 0 O.D N <1 .0 <1 . D <1 . D N 0.0 N N N N N N N N 0.0 N N N N N N N <1 .0 N N N N <1 .0 <1 . D N N <1 . 0 N <1 . D N Bi-ppm Cd-ppm s N K N N N N 20 <1 0 K N N N N' N N N h N N N N N N N K N N N N N N N N N N N N N N N 10 N N N N s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Co-ppm s N N N 200 N N N N N <S N 30 30 30 <5 N 20 15 30 15 15 20 30 <5 N 15 30 10 N N N 7 7 N N N 15 N 30 500 7 70 N 5 N Table 3. Semiquantitative spectrooraphic analyses of outcrop samples from the U.S. Virgin Islands.--Continued to Sample SJ061R SJ052P SJP.63R SJ^SUR 5J06UF1 SJP65R SJ065R1 SJ066F SJ"66F1 SJ<"68R SJ069R SJ?70h SJ071R SJ073R SJC7UR SJ075R SJ076R SJ077R SJ078R SJ079R SJ080R SJ081R SJ082R SJ086R SJ087R SJ088P SJ089R SJ090R SJC91R SJ091R1 SJ091R10 SJ091R1 1 SJ091R12 SJ091R13 SJD91R15 SJ091R16 SJ091R17 SJ091R18 SJ091R2 SJ091R3 SJ091RU sjogiR^ SJ091R6 SJ091R7 SJ091R9 Cr -ppm s N N N <1 0 10 N N »J <10 00 N 30 100 100 N N 50 30 100 50 20 N 70 N 10 30 <10 20 N H 20 30 <1 0 20 20 30 10 <1 0 N H 50 N 15 20 N Cu-ppm La-ppm s 15 <5 5 300 500 300 50 1 ,500 150 15 5 70 100 100 <5 50 70 15 100 50 70 300 30 15 <5 70 150 200 <5 20 20 150 50 <5 <5 H 70 <5 30 15,000 70 15,000 70 20 50 s N N <20 <20 N N N N N N <20 N N H N N H <20 H H N N N N H <20 N 20 ' 20 '. -K 20 20 N <20 <20 <20 N N N N H H <20 20 20 Mo-ppm s N N f N N 200.0 300.0 300.0 N N N N N H N N N K H N N N N H H N H N N N N N N N H H N N N N N H H H N Nb-ppm s N K N N N N N N N N N N N N N K N N N N N N N N N K N N N N N N N N N N N H N N N H N N JJ Ni-ppm s <5 5 <5 5 N <5 N 5 <5 5 5 20 20 20 <5 <5 30 50 20 50 15 7 70 5 <5 50 15 20 N <5 <5 10 <5 <5 N H 70 5 15 150 15 30 H 7 5 Pb-ppm Sb-ppm Sc-ppm ?n-ppm s 30 N N < 10 70 200 1,000 20 70 N N N < 10 N N <10 15 10 10 <10 <10 H 10 < 10 10 10 10 10 N N 100 100 20 N H N < 10 30 N 10 15 10 10 70 70 s N N N N " <100 N <100 N N N N N N N N K N N H N H N H N N N H H N H N N N H H N N N N H N H H N s 7 7 7 IS <5 5 20 <5 5 7 5 30 30 30 1C 5 30 7 30 15 30 30 30 10 15 20 30 20 N 5 N 5 20 <5 N N 20 N 20 <5 30 5 5 7 N s N N N N N N N N N N N N N N N N N N N N N N N H H K N N N N N N N H N H N H N N N N N N N Sr-ppm V-ppm W-ppm s N N 150 N N 500 150 N N N N 500 300 300 150 N 500 300 500 500 500 N N N 300 700 500 300 <100 N 500 700 300 <100 200 300 1,500 H 300 N 500 500 500 150 700 s 100 30 30 30 300 30 150 30 30 50 30 300 3CO 30C 30 15 200 200 300 200 300 500 300 30 20 300 500 300 30 200 20 150 100 50 30 30 200 <10 100 10 300 1^0 30 70 300 s N N N N N N N N N N N N N N N N N N N N N N N N N H H H N N N N N N N N N H H H N N N N N Y-ppm s 15 20 2^ 20 <10 N 20 15 10 33 15 10 15 10 20 15 20 10 15 15 20 20 15 20 70 20 30 20 <10 20 10 10 20 10 10 <10 15 N 15 N 10 10 10 20 15 Zn-ppm s N N N 500 N N N K N N N N N N N N N N N N N 500 N N N N N N N N 700 7,000 N N N N N N N 500 N 500 N N 7,000 Table 3. Semiguantitative spectrographic analyses of outcrop samples from the U.S. Virgin Islands.--Continued to CO Sanple SJ061P SJD52R SJ053R SJ05UR SJ06UR1 SJ065R SJ065R1 SJD66R SJ066P1 SJ068P SJ069R SJ070P SJ171H SJC73R S.707I4R SJ r'75R SJG75R SJ077P SJ078R SJ079R SJT80R SJ081R SJOR2R SJ086R SJ087R SJ088R SJ089R SJ090R SJ?91R SJ091R1 SJ091R10 SJ091R11 SJ091R12 SJ091R13 SJ091R15 SJ091R16 SIJ091R17 SJ091B2 5J991R3 SJ091RU SJ091R5 SJ091R7 SJ091R9 Zr-ppm s 50 ^0 70 30 15 30 200 30 50 70 50 15 20 <10 50 30 70 50 10 50 20 30 15 50 150 150 30 1 C 0 K 500 N 15 200 10 N N 20 15 <10 N 50 20 <10 2C N Th-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Table 3. Semiquantitative spectrographic analyses of outcrop samples from the U.S. Virgin Islands.--Continued CO Sample S J "; 9 3 R 5J09«4R SJ "94R 1 SJ095R FJ?96R SJ-96R1 SJ097K SJ097R1 SJ097F2 SJD98R S J 0 9 9 P SJ100R SJ101R SJ103R1 SJ1DUR SJ105R SJ1T5R1 SJ105R2 SJIOfiR SJ107R SJ107R1 SJ108R SJ109R SJ110R SJ110R1 SJ110R2 SJ110R3 SJ111R SJ111R1 SJ11 1R10 SJ111R11 SJ11 1R12 SJ11 1R13 SJ11 1R2 SJ11 1RU SJ11 1R5 SJ111R6 SJ11 1R7 SJ111R8 SJ11 1P9 SJ2D1R SJ202R SJ203R SJ2DUR SJ205R Fe-pct. s 5.00 5.00 5.00 7.00 3.00 3.00 7.00 .50 7.00 5.00 7.00 7.00 7.00 2.00 3.00 5.00 7.00 2.00 .70 7.00 2.00 7.00 2.00 1.50 7.00 7.00 5.00 3.00 .15 .20 .70 10.00 >20.00 .70 >20.00 20.00 15.00 2.00 1.00 7.00 .70 2.00 2.00 10.00 3.00 Hq-pct . s 1 .50 3.00 2.00 1.50 2.00 .70 1 .50 .07 3.00 2.00 3.00 2.00 5.00 .30 .70 2.00 3.00 1.00 .30 5.00 .50 3.00 .70 .30 5.00 3.00 .15 2.00 .20 .30 .05 3.00 .50 .15 .03 .03 .03 .10 .07 .10 .07 .50 .50 .20 1.00 Ca-pct. Ti-pct. s 7.00 5.00 7.00 10.00 10.00 10.00 2.00 .15 5.00 5.00 7.00 5.00 3.00 .15 .30 5.00 10.00 1.50 1.50 3.00 2.00 5.00 .15 .50 7.00 7.00 .10 .05 <.05 f ,- <.05 .05 7.00 .05 <.05 <.05 .05 <.05 .07 .10 . 10 .20 2.00 1.00 .10 2.00 s .300 .500 .300 .500 .300 .300 .7DO .050 .500 .500 .500 .500 .300 .300 .200 .500 .100 .100 .150 .300 .150 .300 .300 .200 .500 .300 .300 .300 .300 .300 .070 .700 .150 .200 .300 .030 .300 .150 .150 .050 .300 .300 .300 .300 .300 Mn-ppm Ag-ppm E 1,000.0 700.0 1,000.0 700.0 700.0 1,000.0 700.0 150.0 1,500.0 2,000.0 1,500.0 1,500.0 1,000.0 20.0 300.0 1,500.0 1,500.0 700.0 300.0 1,500.0 1,000.0 1 ,500.0 700.0 300.0 1,500.0 1,500.0 700.0 500.0 <10.0 50.0 <10.0 1,500.0 200.0 10.0 30.0 70.0 20.0 10.0 <10.0 300.0 100.0 300.0 500.0 200.0 700.0 s N N N N N N N N N N N N N N N N .5 N N N N N N N N N N N 1.0 .7 1.5 N 1.5 <. 5 N N N N N N N N N N N As-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Au-ppm s N N K N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N B-ppm s N N N N N N 70 15 N * N N N <1 0 N N 70 15 30 N 10 N N N N N 15 10 20 10 <10 N N 20 N N N 20 N N N 20 N N 15 Ba-ppir s 300 500 150 5^0 700 200 1,000 150 100 150 70 30 <20 300 5 C 300 700 70 200 N 100 <20 20 <20 50 20 <20 300 300 200 50 200 30 300 5,000 200 200 1 ,000 500 500 <20 100 20 500 200 Be-ppm s N N K N N N N <1 . D N N N N N N N N N N <1 . 0 N N N N <1 .0 N N <1 .3 <1 . 0 N N N N N N N N N N N <1.0 N <1 . D N N <1 . D Bi-ppra Cd-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 15 N N N N N N N N s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Co-ppi s 7 10 10 10 7 5 1 ^ N 15 10 30 15 30 N <5 10 20 N N 30 5 30 <5 N 30 20 7 7 N <5 N 20 7 N N N N N N N N N N N N Table 3. Semiquantitative spectrographic analyses of outcrop samples from the U.S. Virgin Islands.--Continued Sa TI pi e Ko-ppm Nb-ppm s s Ni-ppm s Pb-ppm Sb-ppm Sc-ppm s s s Sn-ppm Sr-ppm V-ppm W-ppm s s s s COo SJ )9 3R SJ09UP SJ-9UP1 SJ095R SJ096R SJT96R1 SJ097R FJ097R1 SJ097R2 SJ09PR SJ099R SJ1DOR SJ101R SJ1T3R1 SJ10UR SJ1D5R SJ10SR1 SJ105R2 SJ106R SJ1D7P. SJ107R1 SJ1D8R SJ109P SJ110R SJ110P1 SJ110R2 SJ110R3 SJ111R SJ111R1 SJ111P10 SJ11 1R11 SJ111R12 SJ11 1R13 SJ111R2 SJ11 1RU SJ11 1RS SJ111R6 SJ11 1R7 SJ111R8 SJ111R9 SJ2D1R SJ202P SJ203R SJ2DUR SJ205R 30 10 15 30 30 30 20 <1 0 10 10 70 <1 0 200 N N <10 <10 15 <1 0 50 <10 50 N <10 300 15 <1 0 <1 0 N <10 N 100 20 <1 0 15 <10 <10 N N 15 N N N N N 70 100 150 100 70 30 700 <5 500 30 30 5 50 <5 7 15 20 7 <5 100 20 70 N 7 150 30 20 1,000 150 1,500 1,000 5,000 1,500 1,500 1,500 1,000 300 70 3,000 3,000 20 7 10 30 5 20 30 20 <20 <20 <20 N N N N N N N N N N <20 N <20 N N N N <20 N <20 N N <C20 <20 N N N <20 <20 N N N <20 20 N N <20 N <20 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 10.0 N 30.0 N N N 50.0 15.0 N 7.0 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 10 5 5 15 15 10 20 <5 10 5 50 <5 50 <5 5 7 7 7 5 30 <5 30 <5 <5 100 15 5 10 20 5 5 70 5 <5 <5 N <5 5 <5 <5 <5 <5 5 5 <5 10 10 < 10 15 10 10 20 30 < 10 10 10 < 10 < 10 < 10 <10 <10 30 N N 00 <10 N N N <10 <10 20 < 10 N <10 10 10 15 N 30 30 50 20 N N N < 10 N 150 < 10 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 15 15 7 30 10 10 20 N 30 20 30 30 50 10 10 20 5 5 5 30 <5 30 7 7 30 20 15 7 10 7 <5 30 10 20 5 5 <5 <5 50 20 7 7 7 7 20 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 1 ,500 1,000 1,000 1 ,000 1,000 1 ,500 300 N 300 300 300 300 200 N <100 300 200 150 N 300 150 100 N N 500 500 N N <100 N N 300 N 300 200 N N N 500 1,000 N 200 300 N 150 200 300 150 300 1SO 150 300 < 10 300 200 300 200 300 20 30 300 70 100 10 300 100 500 70 30 300 300 200 50 70 50 50 500 300 200 500 200 50 30 500 500 30 30 30 70 <10 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N H N N N N N N N N N N N N 15 20 15 2D 15 15 30 <10 20 20 15 0 10 20 30 20 10 <1 D 20 15 N 10 20 20 20 15 15 20 <1 0 15 N 30 20 <1 0 <10 <10 10 20 15 20 15 20 20 <10 30 N N N N N N <200 N N N N N N N N N 300 h N N N N N N N N N 200 <200 N N N 700 N N N N N N N N N N N N Table 3. Semiquantitative spectroqraphic analyses of outcrop samples from the U.S. Virgin Islands.--Continued CO Canple Zr-ppm Th-ppm S 5 SJ093P SJT9UR SJ09UR1 sjogsp SJ096F SJ096R1 SJG97R SJC97R1 SJ097R? SJ098R SJ099R SJ100R SJ101R SJ103R1 SJIOUR SJ105& SJ105R1 SJ1D5R2 SJ106R SJ1D7R SJ107R1 SJ1D8R SJ109R SJ110R SJ110F1 SJ110R2 SJ110R3 SJ111R SJ11 1F1 SJ111R10 SJ111R11 SJ111P12 SJT\ 1R13 SJ111R2 SJ111RI4 SJ111R5 SJ111R5 SJ11 1R7 SJ111R8 SJ11 1P9 SJ201R SJ2D2R SJ203R SJ20UR SJ205R 50 50 30 50 30 50 50 15 20 100 15 15 10 70 7D 30 50 15 50 15 20 10 100 70 30 20 30 50 50 30 10 30 <10 30 15 20 50 100 20 N 30 50 70 70 150 N N N N N N N M N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N V N N N N Table 3. Semiquantltative spectrographic analyses of outcrop samples from the U.S. Virgin Islands.--Continued Sample SJ206R SJ207R STC01R ST002R ST003R ST-DUR ST005K ST006R ST007R ST008R ST009R ST"10R SJ601R SJ601P1 SJ6D2R SJ601R SJ603R1 SJ63UR SJ60UR1 SJ6D5R SJ605R2 SJ605R3 SJ6D6R SJ607R SJ607R1 SJ6D7R? SJ608R SJ609R SJ610R SJ610R1 SJ610R2 SJ61 1R SJ612R SJ613P SJ61UR SJ61UR1 SJ615R SJ615R1 SJ515R3 SJ616R SJ616R1 SJ616R2 SJM7R SJ618R SJ618R1 Fe-pct. s 1.00 3.00 2.00 7.00 1.00 .05 1 .50 .70 .30 7.00 1.00 1.50 5.00 7.00 7.00 5.00 5.00 5.00 3.00 1.50 2.00 7.00 7.00 7.00 3.00 3.00 7.00 5.00 10.00 7.00 10.00 5.00 7.00 2.00 5.00 10.00 5.00 1.50 .70 7.00 5.00 1.50 7.00 5.00 1 .00 Mq-pct . s .05 1.50 .30 2.00 .07 .03 .02 <.02 <.02 .05 .03 .05 3.00 5.00 3.00 3.00 2.00 5.00 .50 .70 1.00 1.00 5.00 2.00 .30 1.50 2.00 2.00 3.00 2.00 1.50 3.00 5.00 3.00 2.00 5.00 .70 .50 .07 5.00 3.00 1.00 3.00 3.00 .30 Ca-pct. Ti-pct. s .10 .70 .07 10.00 .07 .07 <.05 <.05 <.05 .05 <.05 .05 5.00 7.00 1 .50 5.00 5.00 5.00 20.00 .10 .15 .05 3.00 7.00 10.00 3.00 3.00 3.00 ' 3.00 r " 5.00 3.00 5.00 10.00 20.00 7.00 15.00 7.00 .70 .05 10.00 3.00 20.00 3.00 3.00 .15 s .150 .300 .200 .300 .005 <.002 .005 <.002 <.002 .020 .020 .002 .300 .500 .500 .300 .500 .300 .200 .300 .200 .500 .500 .500 .300 .300 1.000 .500 1.000 .700 .500 .500 .700 .150 .500 .300 .200 .100 .020 .500 .300 .070 .300 .300 .030 Mn-ppm s 150.0 700.0 500.0 1,000.0 150.0 <10.0 <10.0 <10.0 <10.0 100.0 <10.0 50.0 1,500.0 2,000.0 1,000.0 700.0 1,000.0 1,000.0 700.0 150.0 500.0 1,000.0 1,000.0 1,000.0 1,000.0 1,000.0 1,500.0 1,000.0 1,500.0 1,500.0 3,000.0 1,500.0 1,500.0 300.0 1,000.0 2,000.0 1,000.0 300.0 1,000.0 1,500.0 1,000.0 150.0 500.0 700.0 300.0 Ag-ppm s N K .5 K 30.0 5.0 100.0 200.0 15.0 150.0 100.0 70.0 N N N N K N N N N N N K N K N N N N N N N 1.0 N N N N K K N N N N N As-ppm s N N N N N N N N N K N N N N N K N N N N N N N N K N N N N K K N N N N N N N N N N K N N N Au-ppm s K N N N N N N < 10 N 15 K N N K K N N N N K N N N N N N N N N N N N N N N N K N N N N K N N N B-ppm s K 15 10 70 N N N K N <10 N K K 10 15 1C 20 20 15 <10 N 30 K N 00 30 N N K 10 10 N K 20 00 10 15 2C 15 20 50 K 10 15 10 Ba-ppm s <20 200 30 <20 20 <20 N N N 20 <20 <20 200 150 150 150 70 100 N N 150 <20 150 50 <20 150 2CO 150 1,000 500 500 500 500 70 300 150 N 50 300 150 70 <20 <20 70 K Be-ppi s 0.3 N N N N N N N N K K H N N 0.0 N N N K .0 <1.0 < 1 . 0 N N N N N N .0 O.D O.D N N < 1 . 0 N .0 <1 .0 N K N .0 N N N N Bi-ppm Cd-ppm Co-ppir 5 5 S N K N N N N 10 K N 15 N N N N N N N N K N N N K K N K N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N K N K N N N N N N N N N N N N N N K K K N N N K N N 5 <5 2C N N N N N <5 N <5 20 5 30 50 30 50 10 <5 <5 7 50 10 7 15 33 30 5C 50 20 30 70 5 30 30 50 5 N 50 50 N 50 30 N Table 3. Setniquantitative spectrographic analyses of outcrop samples from the U.S. Virgin Islands.--Continued Sample SJ206R SJ207R ST001R ST002R STOD3R STCDUR STG05R STOOPR ST007R ST008H STD09R ST010R SJfiOIR SJ6D1F1 SJ602R SJ613R SJ603R1 SJ60UR SJ604R1 SJ605R SJ6D5R2 SJ605R3 SJfOSP SJ637R SJ607P1 SJ607R2 SJ608R SJ5D9R SJ61CR SJ610R1 SJ610R2 SJ611R SJ612R SJ613R SJ61UR SJ6T4R1 SJ615R SJ615R1 SJ615R3 SJ616R SJ616R1 SJ616R2 SJ617R SJ61RR SJ618R1 Cr-ppm E N ?-0 00 100 N <10 N N N 15 <10 <10 100 150 100 20 10 70 70 <10 10 10 15 50 20 150 15 59 70 30 50 50 150 150 50 700 30 15 15 100 100 15 70 50 <10 Cu-ppm s 5 5 50 150 30 <5 20 10 30 70 30 100 100 150 100 70 150 150 50 30 7 5 70 50 20 50 50 100 100 100 50 70 100 100 100. 50 70 20 10 100 150 30 70 70 70 La-ppm s N N N N N N N N K N N N <20 N <20 N <20 N N N <20 N N <20 N N <20 N ' 20 '. 'N N N N 20 N <20 N <20 <20 N N <20 N N <20 Mo-ppm s K N N N 50.0 N 10.0 7.0 N 30.0 5.0 <5.0 N N N N N N N N N N N N N N N N N N N N N N H N N N N N N N N N K Nb-ppm s N N N N N K N N N N N N N N N N N N N N N N H N N N N N N N N N N N N N N N N N N N N N N Ni-ppm s <5 5 5 30 20 7 5 5 7 15 5 5 15 30 50 15 10 30 20 <5 5 <5 15 20 5 70 <5 50 30 20 20 15 70 70 30 150 15 7 7 30 30 N 30 20 <5 Pb-ppm Sb-ppm Sc-ppm s N <10 N 15 N N 20 15 10 20 15 15 N <10 15 <10 300 <10 N <10 <10 <10 N N 10 00 00 10 20 15 15 30 10 20 N 00 10 N N 20 <10 20 oo 00 oo s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N s 7 1C 5 50 <5 N N N N <5 N N 30 50 30 30 30 30 10 7 1C 20 50 <5 30 30 20 30 30 30 20 30 30 5 30 20 50 5 <5 30 30 <5 30 30 <5 Sn-ppm S N N N N N N N N N N N N N N N K N N N N N N N N N N N N N N N N N N N N N N N N N N N K N Sr-ppm s N 150 N 1 ,000 N N N N N N N N 500 500 500 300 500 500 200 N N N 150 100 1,000 150 300 300 500 500 300 500 700 300 500 200 500 OOO N 700 150 150 150 300 V V-ppm 5 00 70 100 500 100 10 30 10 10 70 30 100 300 500 300 300 300 300 200 50 30 70 500 200 300 200 300 300 300 300 300 300 500 150 300 300 300 70 30 500 300 50 200 300 100 W-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N K N N N N N K K N N N N N N N N N N N Y-ppm s 20 20 N OD N N N N N N N N 10 20 20 20 2D 15 N 20 2n 20 15 00 20 15 30 20 50 20 50 20 20 20 20 15 10 N N 15 10 N 15 15 N 7,n -ppm s N N N K N N N N N N N N N N N N N N N N N 700 N N N N N N N N N N N N N N N N N N N N N N N Table 3. Semlguantitative spectrographlc analyses of outcrop samples from the U.S. Virgin Islands.--Continued CO Sample SJ206R SJ2D7R STC01R STCD2R ST003R STOOI4R 5TOD5R ST006R STOD7P ST008E STOD9R ST010R SJ6D1R SJ601R1 SJ602R SJ6D3R SJG03R1 SJ604R SJ6D4R1 SJ605R SJ6D5R2 SJ605R3 SJ606" SJ607R SJ5P7R1 SJ607R2 SJ608R SJ609R SJ610R SJ610R1 SJ610R2 SJ611R SJ612R SJ613R SJ61UR SJ61UR1 SJ615R SJ615R1 SJ615R3 SJ616R SJ616R1 SJ616R2 SJ617R SJ618R SJ618R1 Zr -ppm s 100 70 00 K N N N N K N N N 15 30 100 30 50 20 10 70 SO 50 15 30 00 20 150 150 200 150 150 50 30 20 100 20 30 10 10 20 20 K 10 30 N Th-ppm s N N N N N N N K N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Table 3. Seniquantitative spectrographic analyses of outcrop samples from the U.S. Virgin Islands.--Continued CO en Sample SJ619P SJ620R SJ621R SJ621RD SJ622R SJ523R SJ624R SJ625R SJ626F SJ626R1 SJ627R SJ627R1 SJ628R SJ628R1 SJ629R SJ629R1 SJ630R SJ630R1 SJ630P2 SJ530K3 SJ630RU SJ631R SJ531R1 SJ631R2 SJ631R3 SJ631R4 SJ631R5 SJ631R6 SJ632R SJ632R1 SJ633R SJ63UR SJ635R SJ635R1 SJ636R SJ637R SJ637R1 SJ637R2 SJ638R SJ638R1 SJ639R1 SJ6UCR SJ6U1R SJ6U1R1 SJ6U1R2 Fe-pct. 5 10.00 5.00 5.00 3.00 3.00 10.00 7.00 5.00 3.00 5.00 7.00 3.00 5.00 7.00 7.00 2.00 5.00 7.00 5.00 .15 1 .00 20.00 20.00 3.00 20.00 5.00 5.00 5.00 2.00 10.00 3.00 3.00 1.50 5.00 5.00 5.00 7.00 1 .50 7.00 5.00 5.00 5.00 2.00 >20.00 10.00 Mg-pct . s 5.00 3.00 3.00 3.00 2.00 3.00 3.00 2.00 1 .50 1 .50 3.00 .70 2.00 .50 3.00 .15 5.00 3.00 3.00 .03 .15 .07 .20 .07 .07 .10 5.00 .20 2.00 .15 3.00 2.00 .20 1 .50 3.00 5.00 1 .00 .50 3.00 1 .00 3.00 3.00 .50 .10 .20 Ca-pct. Ti-pct. s 7.00 3.00 5.00 3.00 3.00 3.00 3.00 3.00 2.00 3.00 5.00 15.00 7.00 15.00 5.00 3.00 5.00 20.00 7.00 .50 .15 <.05 <.05 <.05 <.05 <.05 3.00 .07 <.05 n ' <.05 3.00 1.50 .07 .15 3.00 5.00 15.00 .50 7.00 3.00 3.00 5.00 <.05 . 10 <.05 s .700 .300 .500 .300 .300 .700 .500 .300 .300 .500 .500 .150 .500 .300 .700 .050 .200 .015 .300 <.002 .030 .150 .700 .070 .070 .100 .300 .070 .150 .100 .300 .300 .200 .500 .500 .500 .700 .150 .300 .300 .300 .300 .200 .100 .150 Hn-ppm Ag-ppm s 1,500.0 1,000.0 1,000.0 1,500.0 700.0 1,500.0 1,500.0 700.0 1,000.0 700.0 1,500.0 1,000.0 1,500.0 1,000.0 1,500.0 200.0 1,000.0 1,500.0 1,000.0 70.0 150.0 500.0 2,000.0 <10.0 20.0 <10.0 700.0 50.0 2,000.0 50.0 700.0 1 ,000.0 70.0 1,000.0 1,000.0 1,500.0 1,000.0 200.0 1,500.0 1,500.0 1,000.0 1,000.0 200.0 70.0 150.0 s N N N N K N N N N N N N N N N N N N N » N 50.0 30.0 20.0 7.0 N N 7.0 N N N N N N N N N N N N N N N N N As-ppm s N N N N N N N N N N N N N N N N N N N N N 1,000 300 N 2,000 N N N N N N N N N N N N V N N N N N N N Au-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N B-ppm s 10 N N N 10 10 N <10 15 20 30 30 N 10 <10 30 10 N 50 20 N N 20 10 N 10 N 15 10 N <10 10 20 15 100 N 70 N N 50 N <1 0 N N 15 Ba-ppm s 150 150 150 70 100 <20 200 200 500 150 300 100 150 30 200 N 50 N 20 <20 N 5,000 1,500 1,500 5,000 500 700 500 300 300 <20 200 150 300 N 30 N N 100 70 20 150 200 30 200 Be-ppm 5 N .0 <1 .0 .0 <1.0 .0 .0 <1 . 0 < 1 . 0 <1 .a N N N N N N N N N N N N .0 N N N N N N <1.0 N .0 .0 <1 . D <1.D N N < 1 . D .0 N N K <1 . 0 <1 . D <1 . 0 Bi-ppm Cd-ppm s N N N N N N N N N N N N N N N N N N N N N 70 30 N 100 N N N N N N N N N N N N N N N N K N N N s N N »! N N N N N N N N N N N N N N N N N N N N N N K N N N N N N N N N N N N N N N N N N N Co-ppm s 70 50 30 20 15 30 50 20 15 30 30 20 30 7 50 N 30 70 30 N N 10 70 N N N 30 N 70 <5 30 N <5 15 70 70 15 5 70 20 70 50 N N 7 Table 3. Semiguantitative spectrographic analyses of outcrop samples from the C.S. Virgin Islands.--Continued CO en Sample SJ619R SJ620R SJ621R SJ621RP SJ622R SJ623R SJ624R SJ625R SJ626R SJ626P1 SJ627R SJ6?7R1 SJ628P SJ628R1 SJ629R SJ629R1 SJ630R SJ630R1 SJ630R2 SJS30R3 SJ630RU SJ631R SJ631R1 SJ631R2 SJ631R3 SJ631PU SJ631R5 SJ631R6 SJ632R SJ632R1 SJ633R SJ63UR SJ635R SJ635R1 SJ636R SJ637R SJ637R1 SJ637R2 SJ638R SJ638R1 SJ639R1 SJ6UOR SJ641R SJ6U 1R1 SJ6U1R2 Cr-ppm s 200 30 100 70 50 <10 100 50 20 50 30 100 20 15 100 15 200 <1 0 150 10 10 10 20 10 20 1C 200 15 <10 10 50 <10 <1 0 10 20 50 10 N 50 100 150 50 <10 10 2C Cu-ppm s 200 100 100 150 50 70 100 70 100 70 150 70 150 30 200 30 100 7 50 <5 70 2,000 3,000 100 700 50 100 150 10 100 150 5 30 100 30 15 70 100 150 150 100 100 50 70 20 La-ppm s N <20 N <20 <20 N N N <20 N N N N N N N <20 N <20 N N N <20 N N N N N <20 '. ^ N <20 <20 <20 N N <20 <20 N <20 N N <20 N N Mo-ppm s N N N N N N N N N N N N N N N N N N N N N 300.0 150.0 150.0 500.0 20.0 N 50.0 N 15.0 N N N N N N N N N N N N N 150.0 5 .0 Nb-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Ni-ppn s 100 30 50 30 30 15 30 50 20 30 15 20 15 5 70 7 50 30 20 5 7 <5 20 5 <5 <5 50 5 10 5 30 <5 5 15 30 50 5 5 30 30 30 30 5 <5 <5 Pb-ppm s 15 < 10 10 <10 20 10 10 <10 10 10 <10 20 30 10 10 <10 <10 30 20 N <10 10,000 1,000 50 10,000 15 10 10 N <10 10 < 10 <10 N <10 <10 15 N 10 <10 <10 15 < 10 30 10 Pb-ppm Sb-ppm Sc-ppm Sn-ppn s s s N N N N N N N N N N N 150 N N 70 N N N N N N N N N N N N N N N N N N N N 50 30 30 20 15 30 30 20 20 30 30 20 50 30 30 N 30 <5 30 N N 15 20 <5 7 5 30 7 7 10 30 10 5 20 30 30 30 7 30 30 30 20 7 5 7 Sr-ppm s 500 500 1,000 700 700 500 500 500 500 500 300 N 300 1,000 300 200 300 150 100 N N N 300 N N N 200 N N N N 300 N <100 300 300 1,500 N 500 150 200 500 N N N V-ppn s 500 300 300 300 150 500 300 230 150 300 300 300 300 700 SCO 150 300 150 1,500 10 70 700 1,000 70 200 70 300 100 50 70 200 30 30 300 300 300 500 50 300 500 300 300 20 70 mo W-ppn s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Y-pp» s 20 10 20 20 <10 20 20 15 20 10 20 10 15 <10 20 N 10 N N N N 15 50 N 15 20 15 10 30 30 15 20 15 20 15 15 30 15 15 <10 10 20 20 23 20 Zn -ppn s N N N N N N N N N N N N N N N N N <200 N N N 1 ,000 1 ,000 N 500 N N 300 200 N N N N N N N N N N N N N 500 N N Table 3. Semiquantitative spectrographic analyses of outcrop samples from the U.S. Virgin Islands.--Continued CO Sanple Zr-ppm Th-ppm s s SJ619R SJ620R SJ621R SJ621RD SJ622R SJ523R SJ62UR SJ625R SJ626R SJ626R1 SJ627R SJ627M SJ628R SJ628R1 SJ629R SJ529R1 SJf30R SJ630R1 SJ630R2 SJ630P3 SJ630RU SJ631K SJ631P1 SJ631R2 SJ631R3 SJ631RU SJ631R5 SJ631R6 SJ632R SJ632R1 SJ533R SJ63U& SJ635R SJ635R1 SJ636R SJ637R SJ637R1 SJ637R2 SJ538R S J 6 3 8 R 1 SJ639R1 SJ6UOR SJ6U1R SJ6U1R1 SJ6U1R2 3D 50 150 70 100 20 50 SO 100 100 30 15 20 20 100 <10 15 30 20 N 1C 10 50 30 30 50 10 30 100 100 15 50 50 50 20 15 50 70 30 15 20 50 70 50 50 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Table 3. Semiquantitative spectrographic analyses of outcrop samples from the U.S. Virgin Islands.--Continued CO CO Saaplp SJ6U1R3 SJ6U1RU SJ6U2P SJ6U3R SJ6U3P1 SJ6U3RD SJ6UUR SJ6U5P SJ6U5R1 SJ6U6R FJ6U6R1 SJ6U6P2 SJ6U7R 3J6U7R1 SJ6U8R SJ6U8R2 SJ6U8R3 SJ6U9P SJ650E SJ651R SJ651R1 SJ651R2 SJ651R3 SJ651PD SJ652R SJ653R SJ653R1 SJ65UR SJ655R SJ655RA SJ656R SJ657R SJ657R1 SJ659R SJ660R SJ660R1 SJ660R2 SJ660R3 SJfi60RU SJ660R5 SJ661R SJ662P SJ662R1 SJ653P SJ663R1 Fe-pct. Kg-pct. s 5.00 5.00 2.00 2.00 7.00 3.00 7.00 7.00 1.50 2.00 3.00 .30 5.00 2.00 3.00 10.00 7.00 2.00 3.00 3.00 5.00 3.00 .50 3.00 10.00 7.00 3.00 3.00 5.00 7.00 7.00 7.00 7.00 10.00 5.00 5.00 .50 5.00 5.00 5.00 3.00 7.00 7.00 10.00 5.00 s .20 3.00 .70 .70 .30 .70 2.00 3.00 .15 .70 .70 .70 1 .00 .70 .70 2.00 5.00 .50 1.00 1 .00 2.00 1.00 .02 1.00 2.00 7.00 .30 1 .50 3.00 5.00 3.00 5.00 3.00 5.00 3.00 2.00 .10 .15 1.00 .70 2.00 3.00 3.00 3.00 .10 Ca-pct. Ti-pct. s <.05 5.00 .70 1 .00 <.05 1.00 .10 5.00 .30 .30 .30 20.00 1.50 2.00 .70 7.00 7.00 .15 .50 .50 2.00 20.00 .70 .30 3.00 10.00 10.00 .50 ' 7.00 : ' 7.00 5.00 7.00 2.00 10.00 15.00 5.00 .15 7.00 3.00 15.00 3.00 3.00 3.00 2.00 10.00 s .070 .700 .300 .300 .500 .300 .500 .700 .300 .200 .300 .050 .500 .300 .300 .500 .500 .200 .200 .200 .300 .070 .015 .150 .500 .500 .300 .300 .300 .500 .300 .500 .300 .500 .300 .500 .007 .300 .300 .300 .300 .300 .500 .700 .200 Mn-ppm Rg-ppm s 50.0 1,500.0 500.0 300.0 50.0 300.0 1,000.0 1,000.0 200.0 300.0 300.0 100.0 1,000.0 500.0 700.0 1,000.0 1,500.0 500.0 300.0 500.0 1,500.0 >5, 000.0 200.0 700.0 1,500.0 1,500.0 2,000.0 1,000.0 1,500.0 1,500.0 1,000.0 1,000.0 1,500.0 1,500.0 1,000.0 1,000.0 100.0 500.0 1,500.0 1,500.0 1,000.0 1,000.0 1,000.0 1,000.0 700.0 s N N N N <.5 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N As-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Au-ppra B-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N s 15 N N N 70 <10 <1 0 10 N N N 30 N N N N N N 30 15 50 N N 20 N N 20 20 15 <10 20 N 20 20 N 30 <10 30 N 30 15 10 N 10 50 Ba-ppra s 500 150 <20 <20 200 20 <20 50 N 2C N <20 20 <20 N 200 <20 N 700 200 70 200 N 200 150 N 200 200 50 1CO <20 <20 150 <20 20 100 N <20 20 3DO 150 150 200 150 N Be-ppra s <1.0 N <1 . D <1 . D N <1.D N N <1 . 0 <1 .3 <1.0 N <1 .0 <1 . 0 <1.D N N N <1 .0 <1.3 <1.0 N N <1 . 0 N N N <1 . 0 V N N N N N N <1.0 N N <1 .0 N <1.0 M N <1 . 0 <1 . 3 Bi-ppm Cd-ppm s N N N N N N N N N V N N N N N N N N N N N N N N N N N N N N N H N N N N N N N N N N N N N s N N N N N H N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N S N N Co-ppm s N 15 <5 <5 N N N 70 N <5 <5 N 10 <5 <5 30 50 <5 N N 30 10 N <5 50 70 7 7 70 70 30 70 70 70 20 20 N 10 10 50 10 70 70 10 N Table 3. Semiquantitative spectrographic analyses of outcrop sanples from the U.S. Virgin Islands.--Continued CO CJD Sample SJ6U1P3 SJ6U1RU SJ5U2R SJ6U3R SJ6U3R1 SJ6U3RD SJ6UUR SJ6U5R SJ6U5R1 SJ6U6R SJ6U6R1 SJ6U6R2 SJ6U7R SJ6U7R1 SJ6U8R SJ6U8R2 SJ6U8R3 SJ6U9R SJ650P SJ651R SJ651R1 SJ651R2 SJ651R3 SJ651RD SJ652R SJ653R SJ653R1 SJ65UR SJ655R SJ655RA SJ656R SJ657R SJ657R1 SJ659R SJ660R SJ650R1 SJ660R2 SJ650R3 SJ660RU SJ660R5 SJ661R SJ652R fiJ662R1 SJ663P SJ653R1 Cr-ppm s <10 70 10 10 100 N 20 20 K 15 10 <1 0 15 15 <10 50 200 N 00 N 30 10 <1 0 N N 100 <10 <10 150 150 50 500 200 200 150 N 10 100 10 150 30 70 150 20 N Cu-ppm s 50 100 15 10 150 7 30 150 N <5 10 7 50 <5 <5 150 50 5 7 7 100 30 20 5 200 50 7 10 100 150 100 150 150 150 70 100 20 20 30 30 70 150 150 200 7 La-ppm s N N <20 N N N <20 N <20 <20 N <20 N <20 N N N <20 N N N <20 N N N N <20 N ' N -. -N N N N N N N N <20 N N N N N N N Mo-ppm s <5.0 N N K N N N N N N N N N N N N N N N N N N K N N N N N N N N N N N N N N M N N N N N N N Nb-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Ni-ppm s <5 20 7 7 30 5 <5 15 <5 5 10 N 7 7 <5 30 100 5 5 <5 20 <5 5 5 5 30 5 7 50 30 50 150 50 50 20 10 <5 7 <5 20 15 30 50 7 5 Pb-ppn Sb-ppm Sc-ppm s < 1 0 <10 < 10 <10 10 <10 N 10 N N N 30 < 1 0 < 1 0 N 10 10 N N N 10 10 N <10 N 10 N N < 10 <10 10 < 10 <10 15 10 <10 N 20 <10 <10 <10 <10 < 10 <1 0 30 s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N s 7 30 7 10 30 15 <5 30 7 7 10 N 20 10 7 30 30 10 15 10 20 10 N 10 50 30 20 10 30 50 30 30 70 50 30 30 N 30 5 30 30 30 50 <5 15 Sn-ppm s N N N N N N M N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N K N N N Sr-ppm s N 150 150 <100 N N N 300 N N N >5,000 150 N N 500 500 N <100 N N 150 N N 150 300 500 N 500 700 700 300 300 50C 300 700 N N 500 N 500 300 500 300 1 ,500 V-ppm s 15 300 30 70 500 70 100 300 < 10 50 50 10 200 50 70 300 300 70 < 10 <10 500 150 10 <10 300 300 50 30 300 500 300 300 3DO 300 300 300 30 300 100 3?0 300 300 500 300 100 W-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N I N N N N N N N K M N N N Y-ppn s 20 15 20 30 15 20 10 30 30 15 50 N 20 20 15 30 20 20 30 30 15 50 N 20 20 15 50 20 10 15 15 15 in 13 <10 20 30 N 15 10 15 10 O"> 15 20 Zn-ppm s N N N N N N K N N N N N N M N N N N N N 200 N N N N N N N N N N N N N N M N N N N N N N K N Table 3. Semiquantitative spectrographic analyses of outcrop samples from the U.S. Virgin Islands.--Continued Zr-ppm Th-ppm s s SJ6U1R3 SJ6U1RU SJ6U2R SJ6U3R SJ6U3R1 SJ6U3RD SJ6UUR SJ6U5R SJ6U5R1 SJ6U6R SJ*U6P1 SJ6U6&2 SJ6U7P SJ6U7R1 SJ6U8R SJ6U8R2 SJ6U8P3 SJ6U9R SJ650R SJ651R SJ651R1 SJ651R2 SJ651R3 SJ651RD SJ652R SJ653R SJ653R1 SJ65UH SJ655R SJ65bRR SJ655R 5J6S7R SJ657P1 SJ659R SJ650R SJ660F1 SJ660R2 5J660R3 SJ660RU SJ650R5 SJfi61R SJ662R SJ662R1 SJ663R SJS53R1 SO 30 70 150 30 70 50 SO 150 50 70 15 70 150 50 70 50 50 100 150 30 N <10 70 20 <10 50 70 30 30 20 30 30 30 20 30 N 20 70 15 ^0 20 30 C 0 30 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Table 3. Semiquantitative spectrooraphic analyses of outcrop samples from the U.S. Virgin Islands.--Continued Sample SJ553R2 SJ66UR SJ665R SJ555R1 SJ666R SJ666P1 SJ667R SJ667R1 SJ667F2 SJ667R3 SJ668R SJ568P1 SJ668P2 SJ568R3 SJ668RU SJ659F SJ670P SJ671R SJ672R SJ673F SJ673P1 SJ67I4P SJ675R SJ675R1 SJfi76R SJ676R1 SJ677R SJ678K SJ679R SJ680E SJ680R1 SJ681R SJ682R SJ583R SJ685R SJ685K1 SJ6B6E SJ687R SJ688P SJ688K1 SJK89R FJ689F 1 SJ690F SJ6Q1P SJ6Q2P Fe-pct. Mg-pct. s 2.00 5.00 3.00 5.00 3.00 5.00 2.00 3.00 7.00 1.50 2.00 3.00 3.00 5.00 5.00 1.00 1.50 2.00 7.00 1.50 7.00 1.50 3.00 10.00 >20.00 2.00 1.50 2.00 3.00 1.50 >20.00 3.00 3.00 3.00 1.50 5.00 2.00 7.00 5.00 2.00 7.00 >20.00 2.00 1.50 20.00 s .50 3.00 1 .50 2.00 .50 .70 .70 .20 3.00 .15 .70 1.00 .70 .70 .70 .10 .30 .70 5.00 .50 1.50 .15 .50 .70 .07 .03 .70 .15 1 .00 .50 .07 .70 .50 .70 .70 .03 .70 2.00 7.00 .70 .20 <.02 .70 .70 .07 Ca-pct. Ti-pct. s 10.00 5.00 2.00 2.00 .50 10.00 .20 . 10 5.00 .05 .15 .50 3.00 2.00 5.00 .70 .05 .20 3.00 .70 3.00 . 10 <.05 N <.05 .07 . 15 .30 <.05 ,, - < . 0 5 <.05 . 15 2.00 2.00 1.50 <.05 .50 5.00 3.00 .70 <.05 <.05 1.00 1.50 .05 s .300 .700 .300 .500 .300 .300 .200 .300 .500 .200 .150 .300 .150 .200 .500 .200 .150 .300 .500 .200 1.000 .200 .300 .500 .500 .150 .150 .200 .200 .200 .700 .300 .300 .300 .300 .300 .200 .700 .300 .200 .100 .500 .200 .300 .300 Mn-ppm Aq-ppm s 1,000.0 1,500.0 1,000.0 700.0 200.0 1,000.0 300.0 70.0 1,000.0 1,000.0 700.0 500.0 1,000.0 500.0 1,000.0 100.0 70.0 150.0 1,000.0 150.0 1,000.0 20.0 50.0 30.0 50.0 <10.0 500.0 70.0 300.0 30O.O 300.0 300.0 700.0 700.0 700.0 30.0 500.0 1,000.0 700.0 200.0 20.0 70.0 500.0 500.0 70.0 s K N N N N K N N N N N N K N N K K N N N N 30.0 1.5 .5 N 2.0 N N N N 1.0 <.5 K N N .5 N N N N K <.5 N K .5 As-ppm s N N N N N N N N N N K N N N N N N N N N K N N 300 2,000 N K N N N K K N N N N K N N K N V N K 200 Au-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N K K N N N N N N N N B-ppm s 30 N N n K 50 N 13 N 15 N N 15 15 20 00 20 N N 20 30 15 50 50 N 00 15 OO 10 50 K <1 0 10 30 15 10 20 OO <1C 20 100 N 15 15 N Ba-ppm s 20 50 200 200 <20 <20 70 150 70 70 K N 70 50 100 20 70 150 <20 70 <20 5,000 3,000 2,000 >5,000 1,500 70 150 200 500 150 300 70 300 300 300 100 70 300 150 200 N 70 500 1,500 Be-ppm s 0.0 N O . 0 K N 0.0 O .0 0.0 .0 0.0 0.0 O . 0 N N N 0.0 1.0 .0 K 0.0 0.0 <1 . 0 K 0.0 N N 1.0 0.0 <1.0 1.0 N 0.0 0.0 1.0 1.0 N o.o N N 0.0 N N 0.0 .0 N Bi-ppm Cd-ppm s K N N N N N K N N N N N N N N N N N N N N N N K N N N K K N N N N N N N N N N N N N N N N s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N * N N N N N Co-ppm s <5 70 10 70 7 15 <5 N 70 5 <5 10 10 70 <5 N N 5 70 N 20 N N N N N N N <5 N N N 10 N <5 N N 30 30 N N K N N N Table 3. Semiquantitative spectrographic analyses of outcrop samples from the U.S. Virgin Islands.--Continued Sample SJ663P2 SJ66UR SJ665R SJ665R1 SJfi66R SJ666R1 SJ667R SJ667R1 SJ657R? SJ667R3 SJ668R SJ668R1 SJ668R2 SJ668R3 SJ668RU SJ659R SJfi70R SJ671R SJ672R SJ673P SJ673R1 SJ67UR SJ675K SJ575R1 SJ676R SJ676R1 SJ677R SJ678R SJ679R SJ680R SJ680R1 SJ681P SJK82R SJ683R SJ685R SJ685R1 SJK96P SJP87R SJ688R SJ688R1 SJ689R SJ689R1 SJ690R SJ691R SJ692R Cr-ppm s 20 70 10 50 15 15 15 <10 200 10 15 <1 0 100 <1 0 <1 0 <10 N 10 100 10 10 N <10 N 30 10 10 <10 10 10 30 N N 10 <10 10 N 30 150 10 <10 500 <1 0 10 10 Cu-ppm s 20 150 30 100 10 10 5 100 150 30 <5 7 20 500 50 7 5 <5 70 500 100 100 300 700 700 100 20 15 1,000 200 700 10 10 5 5 150 10 30 100 15 2,000 700 <5 7 700 La-ppm s <20 N N N N <20 <20 N N <20 N N N N N <20 <20 <20 N <20 <20 <20 N N N N N <20 <20 '.70 N N N <20 N N N N N N N N <20 <20 N Mo-ppm s N N N N N N N N N N N N N N N N N N N N N N 5.0 7.0 700.0 100.0 N N 20.0 N N N N N N 50.0 N N N N 50.0 N N N 70.0 Nb-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Ni-ppn B <5 70 5 30 5 15 5 7 100 5 5 <5 30 5 5 5 <5 5 50 <5 7 <5 5 <5 N <5 5 <5 5 5 <5 <5 5 5 5 5 7 20 50 5 <5 <5 5 7 <5 Pb-ppm Sb-ppm Sc-ppm s <10 <10 < 10 10 < 1 0 <10 < 10 <10 10 <10 N < 10 50 10 N <10 N N N <10 <10 1,000 20 150 200 30 N 10 10 700 70 15 N N <10 30 < 1 0 <10 <1 0 10 20 100 <10 20 100 s N N N N M N N N N N N N N N N N N N N N N N N N <100 N N N N N N N N N N N N N N N N N N N N s 20 30 20 30 20 20 7 7 30 7 10 10 20 20 15 5 7 7 30 5 30 5 10 20 <5 N 5 7 20 10 <5 5 7 15 7 5 10 30 30 7 5 7 7 7 7 Sn-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Sr-ppm V-ppm W-ppm s 150 200 500 300 N N <100 N 700 N N 100 500 300 300 <100 N N 100 N 300 N N N N N N N N N N N 200 <100 300 V N 300 200 200 N N N 200 N 5 150 300 150 300 70 300 30 30 300 30 <10 70 200 200 200 30 20 30 300 30 300 70 100 70 300 20 20 70 70 30 500 30 70 30 20 70 15 300 300 20 150 500 30 30 100 s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N H N N N N N N Y-ppm 5 20 20 20 20 20 20 20 30 15 20 30 30 <1 0 15 20 15 20 20 20 20 30 < 10 10 30 20 N 30 10 20 50 15 15 15 20 20 N 33 20 15 20 N 15 20 20 15 Zn -ppn B N N N N N N N N N N N N N N N N N N <200 N N N N N N N 300 N N 700 N N N N N N N N N N N N N N N Table 3. Semiquantltative spectrographic analyses of outcrop samples from the U.S. Virgin Islands.--Continued CO Sample Zr-ppm Th-ppm s s SJ663R2 SJ65UR SJ665R SJ665R1 SJK66R SJ666P1 SJ657R FJ667R1 SJ667R2 SJ667R3 SJ668R SJ658R1 SJ668R2 SJ658R3 SJ668RU SJ669P SJ670R SJ671R SJ672R SJ673R 5J673S1 SJ67UR SJ675F SJ675H1 SJ676P SJ676R1 SJ577R SJP78R SJ679R SJ680R SJ690R1 SJ681H SJ682R SJ683R EJ685R SJ685R1 SJS86R SJ687R SJ688R SJ688R1 SJ689R SJ689R1 SJ690R SJ691R SJ692R c,? 50 50 50 50 30 50 150 30 70 100 70 10 15 70 30 ~f n 70 10 50 100 70 150 150 50 30 100 50 70 70 50 100 150 70 70 70 150 50 20 50 30 N 70 50 100 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Table 3. Semiquantltative spectrographic analyses of outcrop samples from the U.S. Virgin Islands.--Continued Sample SJ692R1 SJ692R2 SJ693R SJ690R SJ695R SJ696R SJ696R1 SJ696R2 SJ697R SJ697R1 SJ698P SJ699R SJ699R1 SJ699R2 SJ700H SJ701R SJ702R SJ702R1 SJ703R SJ70UR SJ705R SJ706R SJ707R SJ708R SJ709R SJ709K1 SJ709R1A SJ709R3 SJ709RU SJ709R5 SJ709R6 SJ710R SJ711R SJ71 1R1 SJ711RZ SJ712R SJ713R SJ713R1 SJ713RD SJ714R SJ716R SJ717R SJ717R1 SJ718R SJ718RD Fe-pct. Mg-pct. s 7.00 1.00 3.00 10.00 2.00 3.00 10.00 3.00 2.00 3.00 2.00 .70 3.00 2.00 2.00 3.00 2.00 1 .50 3.00 1.50 1 .50 7.00 1.50 3.00 3.00 1.50 1C. 00 2.00 .70 7.00 3.00 10.00 2.00 2.00 3.00 3.00 3.00 5.00 1.50 2.00 1.50 1.00 7.00 1.50 2.00 s .02 .70 1 .00 2.00 1 .00 1.00 .30 .50 1 .00 .10 .70 .70 .15 .50 .70 1.00 .70 .15 .70 .70 .70 .30 .70 1 .00 1.00 .50 .20 1 .00 .20 2.00 .15 3.00 .50 .30 .70 .50 .70 .50 .50 .70 .20 .20 3.00 .30 .70 Ca-pct. Ti-pct. s <.05 <.05 .30 5.00 .20 .20 <.05 <.05 .15 <.05 .50 .07 .05 .15 1.00 . 15 .30 .20 .30 .20 1.50 <.05 . 15 .30 .30 .07 <.C5 . 15 . 15 t. - 1.50 <.05 3.00 .15 . 15 .10 1.50 .15 10.00 .10 .20 .10 .10 1.50 .15 .20 s .070 .200 .200 1.000 .300 .200 .100 .200 .150 . 100 .200 .070 .100 .300 .300 .200 .300 .150 .300 .150 .100 .150 .300 .200 .300 .150 .200 .200 .020 .700 .200 .500 .100 .100 .200 .200 .200 .200 . 100 .200 .300 .200 .500 .200 .300 Mn-ppm Ag-ppm s <10.0 50.0 500.0 1,500.0 700.0 700.0 300.0 200.0 500.0 50.0 200.0 200.0 150.0 200.0 500.0 1,000.0 500.0 150.0 500.0 300.0 1,000.0 30.0 300.0 500.0 700.0 150.0 70.0 500.0 150.0 2,000.0 30.0 1,000.0 300.0 500.0 300.0 700.0 300.0 1,000.0 200.0 700.0 100.0 30.0 500.0 70.0 150.0 s 50.0 N N N N <.5 2!o .7 N N N N N N N N N N N N N .7 N N N N N N N N N N N N N N N N N N N N N N N jfs-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Au-ppm P-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N s N 20 <10 N 1C N 30 2C 15 10 N 10 N 10 15 20 N <1 C N N 70 15 N <10 10 30 50 10 10 15 30 20 10 N 70 10 N <1 0 N <10 N N N N <10 Ba-ppm Be-ppm s s 1,500 N 300 <1.D 100 <1.0 50 N 500 <1.0 70 <1.D 2,000 N 1,000 N 100 <1.0 300 <1.0 <20 .0 200 <1.0 300 <1.0 70 <1.0 70 <1.0 150 1.0 150 N <20 <1.0 50 <1 .0 <2C <1.0 200 1.0 700 N <20 N 200 <1.0 30 <1.0 700 1.0 1,000 <1.0 150 <1.0 <20 N 100 N 700 N 2CO N 200 1.0 100 <1 .0 100 <1.D 300 1.0 70 1.0 N N 20 1.0 20 <1.0 <20 <1.0 <20 <1.0 100 N 20 <1.0 <20 <1.0 Bi-ppm Cd-ppm s N N N N N N 10 N N N N N N N N N N N N N N N N N , N N N N N N N N N N N N N N N N N N N N N s N N N N N N N N N N N N N N N N N N NN ' N S N N N N N N N N N N N N N N N N N N N N N N N Co-ppm s N N 5 70 N 7 N <5 N <5 7 N N N 7 N c N N N N N <5 5 5 N N <5 K 70 N 50 N K <5 N <5 7 N <5 N N 50 N N Table 3. Semiquantitative spectrographic analyses of outcrop samples from the U.S. Virgin Islands.--Continued Sample SJ692R1 SJ692R2 SJ693R SJ69UR SJ695P SJ696R SJ696R1 SJ696R2 SJ697R SJ697R1 SJ698R SJ599R SJ699R1 SJ699R2 SJ700P SJ7D1R SJ702P SJ702P1 SJ703R SJ7DUR SJ7T5R SJ706R SJ707R SJ708P SJ709R SJ700R1 SJ709R1A SJ709R1 SJ709RU SJ709R5 SJ709R6 SJ710R SJ711R SJ711R1 SJ711RZ SJ712R SJ713K SJ713R1 SJ713RD SJ71UR SJ716R SJ717R SJ717R1 SJ718R SJ718PD Cr-ppm s <10 10 10 20 <10 20 15 15 10 <10 10 N <10 10 <10 10 10 N N N N N 10 10 <10 N <10 N 10 100 <10 20 <1 0 70 15 N N 100 10 N <10 <10 10 <1 0 <1 0 Cu-ppm s 300 100 <5 100 10 30 150 1,500 7 15 <5 7 7 200 15 7 5 15 7 <5 30 150 <5 10 <5 10 50 30 20 150 50 150 <5 10 5 <5 <5 15 <5 <5 <5 5 150 10 15 La-ppm s N <20 N N <20 N N N N N <20 <20 <20 <20 N <20 N <20 N N <20 N N N N N N <20 ' N <: ' N N N N N <20 N <20 N <20 <20 N <20 N <20 N Mo-ppm s 100.0 N N N N N 15.0 10.0 N N N N 15.0 N N N N N N N N N N N N N 7.0 N N N <5.0 N N N N N N N N N N N N N N Nb-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N F N N Ni-ppm s <5 5 <5 30 <5 7 5 5 <5 5 5 5 <5 5 10 5 7 7 <5 5 30 <5 5 7 5 5 <5 <5 7 50 7 50 <5 7 5 <5 5 15 5 5 <5 5 10 <5 <5 Pb-ppm Sb-ppm Sc-ppm s 70 <10 N 10 <10 <10 150 15 < 10 N <10 N <10 <10 20 N N <10 00 <10 <10 <10 N < 10 N 15 30 N N 10 <10 20 N N <10 N N 20 N N < 1 0 <1 0 < 10 <10 N s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N s <5 15 10 30 7 10 7 7 7 5 7 5 7 7 7 15 10 7 15 5 7 7 7 7 15 10 15 7 N 30 10 30 7 7 15 7 15 30 10 10 7 5 30 5 5 Sn-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N X N N N N N N N N N N N N N N N N N N Sr-ppm s N N <100 300 N N N N N N N N N N N N N N 100 N N N N N N N N N N 200 N 500 N N N N N 1,500 N N N N N N N V-pc-n W-ppm s <10 30 15 500 30 70 20 50 30 70 50 15 30 20 30 . 10 10 < 10 10 <10 10 20 30 70 30 <10 30 20 20 300 10 300 < 10 < 10 00 < 1 0 < 1 0 500 < 1 0 15 30 20 300 30 30 s N N N N N N N N N N N N N N N N N N N N N N N N N N N V N N N N N *l N N N N N N N N N N N Y-PPB s 00 15 20 30 15 15 15 15 15 N 20 20 1 ^ 20 20 20 20 20 30 15 20 15 20 15 20 20 50 21 N 30 2? 2D 15 20 20 30 20 <10 15 20 15 15 15 15 15 Zn-ppn s N N N N N <200 500 1 ,000 N N N N N N N N N N N N N N N N N N N N N 500 N N N N N N N N N N N N N N N Table 3. Semiquantitative spectrographic analyses of outcrop samples from the U.S. Virgin Islands.--Continued Sample Zr-ppm Th-ppm s s SJ692R1 SJ692P2 SJ593R SJ69UR SJ695R SJ696P SJ696R1 SJ696R2 SJ697R SJ697R1 SJK98F, SJ699P SJ699P1 SJ699R? SJ700R SJ7D1R SJ702R SJ702R1 SJ703R SJ7?UR SJ705K SJ706R SJ737R SJ708R SJ709P SJ709R1 SJ709R1A SJ709R3 SJ709RU SJ7D9H5 SJ709R6 SJ710F SJ711R SJ71 1R1 SJ711RZ SJ712R SJ713R SJ713R1 SJ713RD SJ71UR SJ716R SJ717R SJ717R1 SJ718R SJ718RD 30 70 30 100 50 50 60 30 50 30 100 50 50 50 70 70 70 50 70 30 70 100 50 50 150 100 150 50 <10 50 100 100 100 100 150 100 100 N 50 50 70 100 15 50 70 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Table 3. Semiguantitative spectroqraphic analyses of outcrop samples from the U.S. Virgin Islands.--Continued Sample SJ719R SJ72DR SJ723R SJ72UR SJ72URH SJ725R SJ725R1 SJ725R2 SJ725R3 SJ725RU SJ726R SJ776R1 SJ727H SJ727R1 SJ728R SJ729R SJ729R1 SJ730R SJ731R SJ731R1 SJ732R SJ733R SJ73UR SJ73UP1 SJ73UR2 SJ7?UR3 SJ73URU SJ73UF5 SJ73URfi SJ734R7 SJ735R SJ735R1 SJ735R2 SJ736R SJ737R SJ737R1 SJ737R2 SJ737R3 SJ738R SJ738R1 SJ738R2 SJ739R SJ739E1 SJ739R2 SJ7UOR Fe-pct. Hg-pct. s 1.50 1 .50 3.00 7.00 5.00 3.00 3.00 3.00 3.00 .70 7.00 3.00 5.00 .10 3.00 ^.00 5.00 7.00 3.00 7.00 7.00 5.00 5.00 7.00 3.00 5.00 3.00 5.00 1 .50 3.00 5.00 .30 3.00 5.00 10.00 3.00 7.00 15.00 5.00 10.00 5.00 5.00 3.00 5.00 5.00 s .50 .70 2.00 3.00 3.00 1.50 .20 .15 1.50 .20 5.00 .50 5.00 .03 .70 2.00 5.00 5.00 3.00 5.00 5.00 2.00 2.00 3.00 .70 2.00 .30 1.50 .70 1.50 1.50 .07 .30 5.00 .20 1 .00 .30 .30 2.00 5.00 .50 2.00 1.00 .30 5.00 Ca-pct. Ti-pct. s .30 .10 3.00 3.00 3.00 2.00 3.00 .50 15.00 . 15 3.00 7.00 10.00 <.05 2.00 5.00 5.00 7.00 15.00 7.00 5.00 5.00 7.00 15.00 5.00 3.00 5.00 1.50 .50 : - 1.50 7.00 .30 7.00 .70 <.05 .05 <.05 <.05 5.00 3.00 15.00 5.00 3.00 10.00 5.00 s .100 .150 .300 .300 .300 .300 .150 .100 .300 .030 .300 .100 .300 .003 .200 .300 .500 .300 .200 .500 .300 .500 .300 .500 .300 .300 .500 .500 .070 .300 .500 .030 .300 .300 .200 .200 .300 .150 .300 .700 .500 .500 .300 .300 .300 Mn-ppm Ag-ppm s 500.0 700.0 700.0 1,000.0 700.0 500.0 300.0 1,000.0 1,000.0 200.0 700.0 500.0 1,500.0 <10.0 1,000.0 1,000.0 1,500.0 1,000.0 1,500.0 2,000.0 1,500.0 1,000.0 1,OOO.C 1,000.0 700.0 1,000.0 1,000.0 1,500.0 1,000.0 1,000.0 2,000.0 100.0 2,000.0 1,500.0 50.0 200.0 30.0 70.0 1,000.0 1,000.0 1,000.0 1,500.0 1,500.0 1,000.0 1,000.0 s N N N N N N N 2.0 .5 N J N N N N N N N N N N N N N N N N N N N N N N N 1.0 N 2.0 2.0 N 1.5 N N N N N As-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N V N N N N N N <200 N N N N N N N fiu-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N B-ppm s N N 10 <10 10 10 15 10 3'J 10 15 15 N 15 20 <10 N N N N N 20 <1 C N 20 <1'J 50 20 10 15 <10 70 70 N N 15 30 10 10 N 30 N 20 N N Ba-ppm s 150 <20 200 150 100 50 20 70 300 30 <20 N 70 N 20 50 70 <20 N 50 200 300 500 <20 70 100 <20 100 200 <20 700 70 100 <20 500 500 1,500 1,000 150 200 <20 150 300 <20 70 Be-ppr s <1.0 .0 N N N N N N N N N N N N <1.0 N N .0 N N N N N .0 N N N N N <1 .0 <1.3 1.5 <1 .0 N 1.0 <1.0 <1 .0 1.0 N N <1.D <1 .0 <1 .0 N N Pi-ppm Cd-ppm Co-ppm s s s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N K N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 7 20 20 15 <5 10 20 <5 70 7 30 N 7 50 70 70 3C 70 70 20 3D 50 1C 20 10 30 e; 15 10 N <5 50 N N N N 20 70 7 30 10 5 50 Table 3. Semiquantitative spectroqraphic analyses of outcrop samples from the U.S. Virgin Islands.--Continued CO Sample SJ719R SJ720R SJ723R SJ72UR SJ72URD SJ725R SJ72 C P1 SJ725R2 ?J725R3 SJ725RU SJ726R SJ726P1 SJ727R SJ727K1 SJ728R SJ729R SJ729R1 SJ730K SJ731P ?J731R1 SJ732R SJ733F SJ73UR SJ73UR1 SJ7TUR2 SJ73UR3 SJ73UKU SJ73UR5 SJ73UR6 SJ73UR7 SJ735R SJ735R1 SJ735R2 SJ736R SJ737R SJ737R1 SJ737R2 SJ737R3 SJ738R SJ738R1 SJ738R2 SJ739R SJ739R1 SJ739R2 SJ7UOR Cr-ppm £ 10 15 50 70 50 50 30 50 500 20 70 30 100 00 N 30 200 150 150 200 200 50 20 200 20 30 20 150 <10 50 30 00 <10 200 10 00 10 00 20 70 100 30 50 20 100 Cu-ppm s 15 30 50 70 70 100 30 150 200 10 70 30 70 N <5 100 150 150 70 100 100 100 30 150 50 70 30 100 50 70 30 <5 10 100 700 150 200 1,000 150 150 30 50 30 20 50 La-ppm s N <20 <20 N N N N <20 <20 N N N V N <20 N N N N N N N N N <20 N <20 N <20 02t> 20 <20 <20 N N <20 N N N N N N <20 <20 N Mo-ppffl s N N N N N N <5.0 N N K N N N N N N N N N K N N N N N N N N N N N N N N N N N N N N N N N N N Nb-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Hi-ppm s <5 5 15 50 30 20 10 30 70 7 50 7 30 5 7 20 50 30 20 50 50 20 15 100 10 15 5 30 5 15 15 <5 <5 100 <5 5 5 5 20 30 7 15 10 5 50 Pb-ppm Sb-ppm Sc-ppm s N 10 <10 <10 <10 <10 N N 15 10 20 15 N N <10 <10 00 00 N <10 <10 10 N 10 <10 <10 <10 N 00 10 20 30 00 00 30 N 50 200 <10 10 10 10 N <10 <10 s N N N N N N N N N N N N N N N N N N N N N V N N N N N N N N N N N N N N N N N N N N N N N s 7 7 20 30 30 20 5 5 30 V 30 20 30 N 10 30 50 50 30 70 30 30 50 30 15 30 20 30 <5 30 20 N 5 30 15 7 10 15 30 30 50 30 30 30 30 Sn-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Sr-ppm V-ppsi W-ppm s 150 N 500 300 300 300 500 N 150 N 150 700 200 N N 500 300 3CO 300 500 300 500 500 150 300 300 500 150 N 150 1,000 N N N N N N N 500 300 700 300 100 300 700 s 15 N 200 200 300 200 200 100 300 20 300 200 200 <10 20 300 500 3 CO 200 500 3CO 300 500 300 300 300 200 300 70 300 200 <10 70 300 10 70 30 150 300 300 300 300 200 500 300 s N N N N N K N N N N N N N N N N N N N N N K P N N N N N N N N N N N N K N N N N N N N N N Y-ppm s 20 20 15 15 15 15 N N 10 N <ir> N 10 N 2H 15 00 00 00 10 N 20 15 20 15 20 20 15 N 15 30 10 15 10 30 20 20 20 15 30 20 15 25 10 15 Zn-pp» s N N N N N N N N K N N N N N N N N N N N N N N N N N N N N N N N N N N 700 500 2,000 N N N N N N N Table 3. Semiquantitative spectrographic analyses of outcrop samples from the U.S. Virgin Islands.--Continued Sanple Zr-ppm Th-ppm s s SJ719R SJ720R SJ723R SJ72UR SJ72URD SJ725R SJ725R1 SJ725H2 SJ725R3 SJ725R4 SJ726R SJ726P1 5J727R SJ727R1 SJ728R SJ72QR SJ729P1 SJ730R SJ731R SJ731R1 SJ732R SJ733R SJ7^UR SJ73UR1 SJ73UR2 SJ734R3 SJ734R4 SJ734R5 SJ734R6 SJ73UR7 SJ735R SJ735R1 SJ735R2 SJ736R SJ737R SJ737R1 SJ737R2 SJ737R3 SJ738R SJ738R1 SJ738R2 SJ739R SJ739R1 SJ739R2 SJ740R 50 70 50 50 5D 50 <10 <10 20 <10 10 N 1^ N 100 30 20 15 <10 30 20 100 15 30 30 50 100 30 <10 20 100 50 70 <10 70 100 150 50 50 100 50 30 30 20 30 N N N N N N N N N N N N N N N N N N N N N N N K K K N N N N N N K N N N K N N N N N N N K Table 3. Semiquantitative spectrographic analyses of outcrop samples from the U.S. Virgin Islands.--Continued Sample SJ7UORD SJ7U1P, SJ7U3R1 SJ7UUR SJ7U5& SJ7U5PD SJ7U6R SJ7U6R1 SJ7U6P.2 SJ746R3 SJ7U6RU 8 UTCOO 1R 8USCOGUR 8USC006R 8USC007R 8USCP13R 8USC022R 8'»SC323P 84SC03UR 8USC035R 8USC036R 8U^C037R 8US3038R 8USCOUOP. 8USCOU6R 8USCOU8R 8USC05UR 8USC058R 8USC060R 8USC063R 8USC065P 8USC067R 8USC1UUR 8USC1U5R 8uscm6R 84SC1U7R 8USC1U8R 8USC1U9R 8USC150R 8USC151R 8USC152R 8USC153R 8USC155R 8USC156R 8USC157R Fe-pct. Kg-pct. s 3.00 2.00 20.00 3.00 3.00 3.00 2.00 3.00 20.00 ?.oo 2.00 5.00 3.00 7.00 5.00 5.00 5.00 7.00 2.00 5.00 5.00 3.00 5.00 3.00 5.00 3.00 3.00 5.00 5.00 5.00 3.00 3.00 5.00 7.00 7.00 5.00 7.00 2.00 3.00 7.00 .70 2.00 5.00 5.00 .50 s 3.00 .70 .15 1.00 1 .00 1 .00 .70 .20 .15 .50 .70 2.00 1 .50 2.00 3.00 2.0C 2.00 5.00 1.00 1.50 1.00 2.00 1 .50 2.00 2.00 1 .00 1.00 2.00 1.50 2.00 .70 .70 3.00 1.00 1.50 2.00 5.00 .70 2.00 2.00 .05 .30 2.00 2.00 .05 Ca-pct. Ti-pct. s 5.00 1.00 .20 1.00 .70 1.00 1.50 .15 <.05 .15 .20 3.00 7.00 3.00 5.00 3.00 5.00 5.00 20.00 3.00 3.00 10.00 3.00 7.00 1.00 .70 15.00 3.00 ' 1.50 r '3.00 1.00 15.00 10.00 1.00 10.00 5.00 7.00 3.00 5.00 7.00 .07 3.00 7.00 10.00 .30 s .300 .200 .150 .300 .300 .300 .150 .200 .150 .200 .200 .500 .300 .700 .700 .500 .500 .500 .200 .500 .500 .500 .500 .500 .500 .500 .300 .500 .300 .500 .300 .200 .700 .500 .500 .500 .700 .300 .500 .700 .003 .070 .300 .500 .050 Mn-ppm s 1,000.0 700.0 1,500.0 700.0 1,000.0 700.0 700.0 300.0 300.0 300.0 700.0 1,000.0 1,000.0 1,000.0 1,000.0 1,500.0 1,500.0 1,500.0 1,500.0 1,500.0 1,500.0 1,000.0 1,000.0 1,000.0 1,000.0 500.0 700.0 1,000.0 2,000.0 1,000.0 700.0 1,000.0 1,000.0 700.0 1,500.0 1,500.0 1,500.0 1,000.0 1,000.0 1,500.0 100.0 300.0 700.0 700.0 100.0 Acy- ppm s N N N N N N K N N N N N N N N N N N N N N N N N N M N N N N N .5 N N N M N N <.5 N M N N N N As-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N K N N N N N M N N N M N N N N N N N N Au-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N K N M N N N N N N N N N N N B-ppm s N N N N 10 N 10 300 N 30 20 N N <1 0 15 15 10 N N N <10 N N ID 20 50 30 20 15 20 10 50 N 50 50 M M N 10 N N 10 N 70 N Ba-ppm s 7C 20 70 200 200 200 70 700 20C 1 ,500 200 200 700 700 1 ,000 20 500 150 150 150 7TO 500 300 500 1 ,000 500 500 700 1,000 700 1 ,000 500 70 500 <20 700 500 1,000 200 200 500 100 700 700 200 Be-ppm s N <1 . 0 N <1 .0 0.0 <1.D <1 .0 <1 . 0 <1 . 0 <1 .0 <1.0 N <1 .0 <1 . 0 <1.D N N N N N M <1 . 0 N <1 . D <1.0 <1.0 N N <1 .0 N K <1 .0 N <1 . D N <1.0 N 1.0 N <1.0 N 1.0 N N 2.0 Bi-ppm Cd-pp» s N N N N N N N N N N N N N N N N N N N N N N N N N N N M N N N N N N N N N N N M N N N N N S N N N N N N N N N N N N N N N N N N N N « N N N N N N N N H N M N N N N N M N N N M N M N Co-ppm s 30 N N <5 5 7 N <5 N N N 50 10 70 5C 20 50 70 10 20 10 10 10 10 15 10 10 20 10 15 7 10 70 50 10 20 70 5 7 30 N <5 10 20 N Table 3. Semiquantitative spectrographic analyses of outcrop samples from the U.S. Virgin Islands.--Continued Sample SJ740PD SJ741R SJ7U3R1 SJ7H4R SJ745P SJ7U5PD SJ746R SJ746P1 SJ746R2 SJ7U6R3 SJ7U6PH 8USC001R 8 4SZOOUR 84SC006R 8USCOG7P 8I4S2013R 8UST022R 8USC023R 8USC03UR 8USC035R 84SC036F 8USC037R 8USC038R 8USCOUOR 84SCOU6R 8US-OU8R 8USC05UR 8USC058R 84SC060R 8USC063R 8USC065R 8USC067R 84SC1UUR 8USC1U5R 84SC1U6R 8USC147R 8USC1U8R 84SC1U9R 84SC150R 8USC151R 8USC152R 8USC153R 8USC155R 8USC156R 84SC157R Cr-ppin Cu-ppm La-ppm s 70 N 100 00 10 <10 <10 10 15 10 00 20 20 30 50 30 10 200 30 00 <10 30 10 50 150 70 100 15 20 20 00 20 700 20 00 15 200 <1 0 15 20 00 20 100 100 oo s 50 <5 300 <5 <5 <5 7 <5 20 5 5 100 50 500 150 70 150 100 30 30 20 150 70 70 100 70 70 100 30 100 50 30 100 200 30 100 300 30 200 70 5 150 100 100 7 s N <20 N N <20 N N <20 N <20 <20 K <20 <20 20 <20 N N <20 <20 N N N <20 <20 N <20 N ' N '.ff <20 <20 <20 <20 N N <20 <20 N N <20 N N N <20 Mo-ppm Nb-ppm s N N 15.0 N N V N N N N K N N K N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Ni-ppm Pb-ppm Sb-ppm Sc-ppm s 30 <5 10 5 5 5 <5 <5 7 <5 <5 7 10 30 30 10 20 100 20 5 <5 20 5 30 70 50 30 10 10 10 5 15 200 10 5 7 70 <5 <5 7 <5 7 70 70 <5 s < 10 N 15 V N < 1 0 <1 0 < 1 0 30 <10 N 15 < 10 20 20 <10 10 < 10 < 10 10 10 10 15 20 10 00 < 10 < 10 10 <10 <10 <10 <10 15 10 10 10 <10 10 <10 <10 <10 <10 10 15 s N N N N N N N K N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N s 30 10 30 10 10 10 5 7 10 5 7 30 20 20 30 30 30 30 5 20 15 15 20 15 20 15 15 30 15 20 15 10 30 30 30 30 50 10 20 30 N <5 15 20 N Sn-pprn s N N N N N N N K N N N N N N N N N N N N N N N N N K N N N N N N N N N N N N N N N N N N N Sr-ppm V-ppm W-ppm s '500 150 N <100 <100 150 N N N K N 700 700 1,000 1,000 500 300 200 500 700 300 700 1,500 1,000 700 150 300 1 ,000 700 700 300 500 500 300 1,000 1,500 500 500 500 300 N N 700 500 N s 300 < 10 200 70 70 70 SO 30 100 30 30 300 150 300 300 300 30C 300 70 300 300 200 200 200 300 200 150 300 150 200 150 70 300 300 300 300 500 50 200 300 10 30 150 300 15 s N N N N K N N N N N N N N N K K N N N N N N N N N N N N N N N N N N N N N N N N N N N K N Y-ppm s 10 20 20 15 20 15 15 20 20 20 20 2? 20 2"> 20 30 20 21 15 20 20 20 10 20 20 2D 15 20 20 15 20 20 20 20 20 15 15 20 20 20 N N 15 20 N Zn-ppm s N N N N N N N N N N N <20C/ N N N <200 N N N <200 N N N N <200 <200 N N N N N N <200 N N N N N N K N N N K N Table 3. Semiguantltative spectrographic analyses of outcrop samples from the U.S. Virgin Islands.--Continued SaTple SJ7UORD SJ7U1R SJ7U3R1 SJ7UUP SJ7U5R SJ7U5RD SJ7U6R SJ7U6R1 SJ7U6R2 SJ7U6R3 SJ7U6RU euszooiR 8USCOOUP euscoo^R 8I4ET007P 8USC013R 8USC022R 8USC023R 8U?~03UR 8USC035R 8USC036R 8USC037R 8USC038R 8USC040R 8USCOU6R 8USCOU8R a*»SC05UR 8USC058R 8USC060R 8USC:063R eascoesR 8USC067R 8US"1UUR 8USC1U5R 8USC1U5R eascm7R 8USC1U8R easciagR 8USC150R 8USC151R 8USC152R 8USC153R 8US2155R 8USC156R 8USC157R 7,r -ppm 55 20 30 <10 ^0 70 70 50 100 ^0 70 mo 30 20 10 10 50 30 30 30 30 30 50 30 100 50 30 20 30 30 30 30 30 30 30 30 30 30 100 20 30 N <1 0 30 50 50 Th-ppm s N N N N N N N N N N N N S N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Table 3. Semiquantitative spectroqraphic analyses of outcrop samples from the U.S. Virgin Islands.--Continued cn CO 5'ample Fe-pct. Mg-pct. 84S32COR 84SC201R 8USC202R 84SC203P 8USC20UR 8£»S~2?5R BUSC2Q6R 8USC208R 84SC2G9R 84FC210R 8US3211R 8U?C212R 8USC213R 8USC215R 8USC216R 8US^218R 8USC219R 84SC220R 84SC223R 8USC22UR 84SC225R 8USC226R 81SC227R 8USC228R 8USC:229R 8USC230R 84SC231R 8USC235R 8USC237R 8USC238R 8USC240R 8US32U2R 8USC2U3R 84SC2U5R 8USC217R 8USC2U8R 84SC2U9R 8USC251R 8USC252R 8USC254R 81JF3255R 8USC256R 8USC257R 8<JSC258R 8USC259R s 5.00 .70 7.00 7.00 2.00 3.00 5.00 3.00 5.00 5.00 5.00 5.00 3.00 3.00 3.00 5.00 .70 3.00 3.00 2.00 5.00 5.00 5.00 7.00 5.00 5.00 .20 7.00 3.00 7.00 7.00 7.00 3.00 .05 3.00 3.00 3.00 7.00 5.00 3.00 3.00 5.00 3.00 5.00 3.00 s 3.00 .30 3.00 3.00 1 .00 .70 3.00 1 .50 3.00 3. CO 1.50 2.00 1.50 2.00 2.00 1 .50 .20 .70 1.50 .70 2.00 2.00 2.00 3.00 1.50 1.50 .10 7.00 1.00 3.00 2.00 1.00 1.00 .02 1.00 1.00 1.50 2.00 1.00 1.00 1.00 1.50 1.00 1.00 1.00 Ca-pct. Ti-pct. s 1.50 3.00 5.00 3.00 2.00 2.00 7.00 10.00 10.00 1.50 20.00 5.00 10.00 7.00 7.00 10.00 7.00 .15 .70 1.00 3.00 2.00 3.00 5.00 15.00 5.00 .15 5.00 2.00 c. ' 3.00 2.00 7.00 5.00 .20 2.00 1.50 10.00 5.00 3.00 1.50 3.00 3.00 1.50 1.00 10.00 s .300 .070 .500 .700 .300 .200 .700 .300 .500 .700 .300 .300 .300 .300 .300 .300 .015 .300 .300 .200 .500 .500 .500 .500 .300 .500 .010 .500 .500 .700 .700 .500 .300 .002 .500 .500 .300 .700 .700 .500 .500 .500 .300 .500 .300 Mn-ppm Atj-ppm s 1,000.0 700.0 1 ,500.0 1,500.0 1,000.0 1,000.0 1,000.0 1,OOC.O 1,000.0 1,000.0 1,500.0 1,000.0 700.0 1,000.0 700.0 1,000.0 500.0 300.0 700.0 1,000.0 1,000.0 1,500.0 1,000.0 1,500.0 1,500.0 1,000.0 100.0 700.0 1,000.0 1,000.0 1,000.0 700.0 500.0 10.0 1,000.0 500.0 1,000.0 1,000.0 1,000.0 1,000.0 1,000.0 1,000.0 700.0 700.0 1,000.0 s N .7 M N .5 N V <. 5 N N N 3.0 < .5 N N N N N N .5 N N N N .5 N N N N N N N N N N <.5 N N N N N N N N N As-ppm s N N N N N N N H N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Au-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N B-Ppm s 50 20 50 3T 20 50 20 1b 7C 70 10 20 30 10 N <10 <1 D 20 15 15 N 10 20 15 20 N 10 <1 0 <1 0 15 15 50 15 N N N N 10 10 20 20 20 20 15 15 Ba-ppm s 1 ,500 200 500 1 ,000 1,000 1 ,000 1,000 1 ,000 7DO 700 1 ,000 500 500 1 ,000 1,000 700 300 1,000 1,000 700 700 1,000 1,000 700 700 1,000 50 1 ,000 1,500 1,000 2,000 1,000 300 <20 1,000 1,500 300 1 ,500 1,500 2,000 1,500 3,000 1,500 2,000 200 Be-ppi s <1.0 N N N <1.0 <1.0 N <1 .0 N N N N N N <1.0 N N <1 . 0 <1 . D <1.D N N N N N <1.D N <1 . D 1.0 <1.D <1.0 N N N <1.0 <1 .3 N <1 . 0 <1 .0 <1.0 <1.0 <1 . 0 <1 .3 <1 .0 N bi-ppm Cd-ppm Co-ppm s s s N N N N N N N N N N N N N N N N N N N N N N N N K N N N N N N N N N N N N N N N N N N N N N N N N N « S N N N S N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N ir <s 20 15 10 10 15 10 1 ^ 20 10 15 10 10 7 15 N <5 10 7 10 20 15 15 15 15 <5 15 7 30 20 20 10 N 10 1' 7 15 15 10 10 15 7 10 10 Table 3. Semiguantitative spectrographic analyses of outcrop samples from the U.r. Virgin I slants.--Continued Sample 8U.SC200R 8UFC2P1R 8USC203R cn 8USC212R 8USC215R 8<4SC216R 8USC218R 8USC219R 84SC220R 8USC223R 84SC224R 8US3225R 8<4SC226R 8USC227R 8USC228R 8USC229R 8USC230P 84SC231R 8USC235R 84SC237R 8US3238R 84SC240R 8USC2U2R 8USC2U3R 8HSC2U5R 84SC247R 8USC248R 8USC2H9R 8USC251R 84SC252R 8USC25UR 84SC255R 8USC256R 814SC257R 8USC258R 8<4SC259R Cr-ppm s 30 <10 20 50 70 50 70 150 100 100 150 20 100 100 200 50 10 70 100 20 200 100 150 <10 70 15 20 700 20 20 20 100 70 00 10 100 200 30 <10 20 10 100 20 20 50 Cu-ppm La-ppm s s Mo-ppm Nb-ppm s s 100 20 50 20 70 50 70 30 130 100 SO 70 70 100 70 50 5 70 100 50 100 100 70 70 100 150 7 150 70 200 100 100 50 N 100 100 70 70 100 100 70 100 30 70 50 <20 N N <20 <20 <20 <20 <20 N N <20 N <20 N <20 N <20 <20 <20 N N N N N N <20 <20 <20 ' 20 <20 <20 <20 N N 20 <20 N <20 20 20 <20 N N <20 N Ni-ppm s 50 15 30 30 50 70 15 30 50 50 150 10 30 5D 150 100 <5 20 150 50 100 50 50 <5 30 15 5 300 10 10 15 50 30 5 7 70 50 10 7 15 10 100 10 10 20 Pb-ppm Sb-ppm Sc-ppm s s s 10 10 10 10 10 10 N N 10 10 10 N 30 20 7 20 15 20 20 10 30 20 20 20 10 N 7 7 5 20 20 20 30 15 15 N 20 10 30 30 30 15 N 20 15 15 20 20 20 20 20 N 20 10 r 1 1 1 -ppm s 500 150 700 ,000 500 <100 ,000 700 500 500 7CO 500 500 500 300 500 300 150 300 150 500 500 500 700 500 700 N ,000 700 700 500 500 200 N 500 500 300 500 500 500 500 500 700 500 300 V-ppm s 150 30 300 300 100 70 300 150 300 300 100 300 200 300 300 200 20 150 150 70 200 300 300 300 150 200 15 200 150 300 300 200 100 <10 200 200 300 300 300 200 200 150 100 200 150 W-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Y-ppm s 15 N 20 20 1? 10 15 10 20 20 15 10 10 15 <10 20 N N <10 N 15 20 15 10 15 15 N 20 20 30 30 20 <10 N 20 20 15 20 20 15 20 20 15 20 15 Zn -ppm s N N N N N N N S N N N N N N N N N N N N N N N N N N N N N N N N N N N N <200 N N N N N N N N Table 3. Semiquantitative spectrographic analyses of outcrop samples from the U.S. Virgin Islands.--Continued Simple Zr-ppm Th-ppm s 01 8US"200R 8USC:201R 8US~202R 8US3203R 8U?;Z204F 8USC205R 8US:2C6R 84SC208P 8USC209R 8US"21 r'R 8US:211R 8USC212R 8USC213R 8USC215R 84SC216R 84SC218R 8USC21«?R 8USC220R 84S3223R 84SC224R 84SC225R 8USC226R 8US3227R 84SC228R 8USC229R 8USC230R 84SC231R 8USC235R 8USC237R 8USC:238R 8USC240R 8USC242R 8USC2U3R 8USC2U5R 8USC247R 8USC248R 8USC249R 8USC251R 8USC252R 8USC254R 8USC255R 84S3256R 8US,T257R 8USC258R 84SC25 ctR 100 <10 20 70 30 20 50 10 30 30 30 30 30 30 50 50 30 30 50 20 30 30 30 30 20 30 <10 100 150 150 150 50 10 <10 150 150 30 50 150 150 150 150 100 100 30 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Table 3. Semlquantltative spectroqraphic analyses of outcrop samples from the U.S. Virgin Islands.--Continued Sample 8USCT2eTR 8<tSC261R 8I4SC262R 84E'C26UR 8USC265R 8US3266R 8USC267R 8«S2277R 8USC285R 8USC286R 8USC287R 8«SC288R 8«SC2fi9R 8USC290R 8USC291R 8US3292R 8USC293R 8USC29UR 8USC295R 8USC296R 8USC297R 8USC298R 8USC299R 8USC500R 8USC501R 8US3502R 8HSC50HR 8USC505R 84SC506R 8USC507R 8US3508R 8USC509R 8UFC510R 8USC511R 8USC512R 8HSC513R 8USC51HR 8«S~515R 8USC516R 8USC517R 8USC518R 8USC519R 8USC520R 8USC521R 8USC522R Fe-pct. * 5.00 .70 5.00 5.00 5.00 .20 .07 .15 2.00 3.00 5.00 5.00 7.00 7.00 5.00 5.00 5.00 7.00 5.00 5.00 3.00 1 .50 10.00 7.00 7.00 7.00 5.00 2.00 7.00 5.00 5.00 7.00 1 .00 1.50 7.00 2.00 5.00 3.00 7.00 3.00 5.00 .05 5.00 3.00 1.50 Hg-pct . s 1.50 1.50 1.50 1.00 5.00 .70 .50 .70 1.00 1.50 1.50 1.50 2.00 3.00 1.50 1.50 1.50 2.00 1.00 1 .00 1.00 .70 1.50 1.50 3.00 5.00 1.00 .70 3.00 3.00 .30 5.00 .30 .20 3.00 1 .00 1 .50 .70 3.00 2.00 2.00 .03 3.00 1 .00 .10 Ca-pct. Ti-pct. s 3.00 20.00 3.00 1.50 3.00 20.00 20.00 20.00 .70 1.50 15.00 3.00 3.00 3.00 2.00 2.00 3.00 3.00 3.00 3.00 7.00 7.00 3.00 10.00 3.00 5.00 7.00 >20.00 ' 5.00 r - 5.00 15.00 7.00 .70 1.50 5.00 7.00 3.00 .10 5.00 20.00 3.00 .05 1.50 1.50 3.00 s .300 .030 .500 .500 .500 .020 .015 .015 .300 .500 .300 .500 .700 .700 .700 .500 .700 1.000 .500 .500 .300 .070 .500 .500 .500 .500 .300 .150 .500 .500 .300 .500 .070 .070 .700 .200 .300 .300 .500 .200 .500 <.002 .500 .300 .050 Mn-ppm Ag-ppm s 1,000.0 300.0 1,000.0 500.0 1,000.0 20.0 30.0 50.0 300.0 300.0 1,500.0 1,000.0 1,000.0 1,000.0 700.0 1,000.0 1,000.0 1,000.0 1,500.0 1,000.0 1,000.0 1,000.0 1,000.0 1,500.0 1,500.0 1,500.0 1,500.0 1,000.0 1,500.0 1,000.0 1,000.0 1,500.0 300.0 150.0 1,500.0 1,500.0 1,000.0 2,000.0 1,000.0 700.0 1,000.0 <10.0 1,000.0 1,000.0 700.0 s N N N N V N N N N <.5 N N N N N N N N N N <.5 .5 N N N N N N N N N N N 1.5 N <.5 N N N N N N N N N As-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N H N N N N N N N N N Au-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N b-ppm s 20 N 30 10 1: N N N 10 10 30 30 15 15 15 10 15 10 10 30 15 15 15 3P 15 15 20 N 20 20 N N N N 70 20 15 20 70 50 15 10 N 30 10 Ba-ppm Be-ppm E 200 5DO 200 1,500 700 N N N 500 2,000 300 700 1,000 1,500 2,000 2,000 1,500 2,000 2,000 500 1,000 300 500 <20 N 200 150 150 100 200 <20 500 <20 20 1,000 700 300 300 500 300 1,000 150 1,500 1,000 N s <1.0 N N N <1.0 N N N <1 . 0 1.0 N <1 . 0 N N N N N N <1 . 0 N K N N N <1.0 N N N N N N N N H N <1.0 <1 . 0 1.0 <1 . 0 <1.0 N N N <1 . 0 N Bi-ppm fd-ppm Co-ppm 555 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N V N N N N N N N N N N N N N N N N N N N N N N H N N H H N N H N N N N N N N N N N N N H N H N N N N N N N N N 10 N 10 7 50 N N N 10 <5 10 10 15 30 15 15 15 20 7 10 10 <5 15 10 30 70 10 5 50 15 <5 30 N 10 30 1P 10 70 20 7 15 N 15 7 N Table 3. Semiquantitative spectrographic analyses of outcrop samples from the U.S. Virgin Islands.--Continued Sample Cr-ppm s Cu-ppm La-ppB s s Mo-ppm Nb-ppm s s Ni-ppm s Pb-ppm Sb-ppm Sc-ppm S' S S Sn-ppm Sr-ppm V-ppm W-ppm s s s s CJ1 84SC260R 84SC261R 8'4?"262R PH5Z26HR 8USC265R 8IJS3266R 8UF3267R 8«S::277R 814SC285R 84SC286R 84S-287R 8USC288R 84SC28QR 84SC290R 8USC291R 8USC292R 8USC293R 84SC29UR 8USC295R 8USC296R 8USC297R 84SC298R 84SC299R 8USC500R 84SC501R 8USZ502R 8 4SC50I4R 8USC505R 8<4SC506R 8<4SC:507R 84SC508R 8USC509R 84SC510R 8<4S"51 1R 84SC512R 8USC513R 8USC51UR 8HSC515R 8USC516R 8USC517R 84SC518R 8IJS2519R 8MSC520R 8<4SC521R 84SC522R 30 20 10 <1 0 500 N N <10 200 50 70 30 20 200 <10 20 20 20 15 <10 200 30 30 10 200 700 N N 150 100 10 200 <10 20 100 70 20 50 70 50 50 10 500 15 N 50 10 20 50 150 <S <5 <5 30 20 50 100 100 150 100 70 100 100 100 150 50 30 50 20 100 30 30 15 150 100 50 100 20 100 70 70 20 100 100 50 70 <5 70 30 <5 N N N N N N N N <20 <20 N N N N <20 <20 <20 <20 <20 <20 N N N N N N <20 <20 ' N ft N N N N <20 N <20 <20 <20 N <20 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 70.0 N N N N N N N V N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 15 N 5 5 200 N N N 100 30 50 30 20 50 10 7 10 20 10 5 100 30 10 7 150 200 5 5 30 30 <5 50 10 100 20 70 10 70 50 20 20 5 70 500 <5 <10 N < 10 <1 0 <10 N N N <10 10 <10 < 10 10 <10 <10 <10 10 <1 0 < 1 0 <10 10 N <10 10 10 10 10 N <10 <10 10 10 15 N <10 <10 <10 10 <10 <10 <10 N <10 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 15 N 20 20 30 N N N 7 15 20 20 30 30 20 20 30 30 20 15 10 <5 20 30 30 50 20 5 30 30 20 30 N <5 30 7 10 7 20 10 20 N 30 7 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 300 1 ,000 300 700 500 700 150 500 150 500 300 300 500 500 500 500 500 700 500 500 1,000 2 1,000 1,500 300 300 500 500 300 300 2,000 500 <100 200 1 ,000 300 500 N 300 150 700 N 1 ,000 700 150 200 15 200 200 200 <10 < 10 <10 100 200 150 200 300 300 300 300 300 300 200 300 150 50 300 300 300 300 150 50 300 300 200 300 50 500 300 150 150 100 300 150 300 < 10 300 70 200 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 20 N 20 30 20 N N N N 20 20 20 30 20 20 20 20 30 20 20 15 N 20 20 20 20 20 10 20 20 15 20 N 10 20 <10 15 15 20 10 20 N 20 15 N N N >l N N N N N <200 N N N N N N N N N N N N N N N <200 N N N N N N N N N N N N N N N N N N N N Table 3. Semiquantitative spectrographic analyses of outcrop samples from the U.S. Virgin Islands.--Continued cn CD Sample Zr-ppm Th-ppm s s 8U?C26CR 8U^r261R 8<4SC262R 84SC26UR 84SC265R 8USC266R 8US2267R 8US~277R 8US~285P 8USC286R 8USC287R 84SC288R 84SC289R 8USC290R 84S-291R 8USC292R 8USC293R 8USC29UR 8USC295R 8USC296R 8USC297R 8US:298R 8USC299R eascsooR 8USC501R 8USC502R 8USC50UR 8USC505R eascsoeR 8USC507R 8USC508R 8USC509R 8USC510R 8USr511R 8tjS3512R 8USC513R 8US^51UR 84SC515R 8US3516R 8USC517R 8USC518R 84S2519R 8USC520R 84SC521R 84SC522R 30 N 50 70 70 N N N 50 TSO 30 50 100 100 150 150 150 150 200 150 70 10 20 15 30 20 30 10 30 30 20 30 10 20 50 20 100 30 50 15 30 N 50 50 N N N N N N N N N N N N N N N N H N N H N N N N N N N N H N N N N N N N N N N N N N N N N N Table 3. Semiquantitative spectrographic analyses of outcrop samples from the U.S. Virgin Islands.--Continued cn cc Sample 8USC523R 814SC52UR 8USC525R 8USC526R 8USC527R 8USC528R 8USC529R 814S3530R 8USC531R 8USC532R 8USC533R 8USC53UR 8USC535R 8USC536R 8USC537R 8US3538R 8USC539R SUSCSUOR 8USC5141R 8USC5U2R 8USC5U3R SUSCSUUR 8*4?c5i*5R 8USC5U6R 8USC5U7R 8USC5U8R 8USCT5I49R 8USC550R 8USC551R 8USC552R 8USC553R 8USC55UR 8USC555R 84SC556R 8USC557R 814SC558R 8USC559R 8USC560R 8USC561R 8USC562R 8USC563R 8USC56UR Fe-pct. s 3.00 5.00 5.00 7.00 7.00 2.00 5.00 7.00 3.00 .70 7.00 10.00 10.00 .15 3.00 1.00 .70 3.00 .50 1.50 .07 1.00 7.00 1.50 10.00 .30 7.00 7.00 1.50 10.00 3.00 3.00 .07 <.05 1.50 2.00 3.00 1.50 3.00 3.00 5.00 .50 Mq-pct. S 1 .00 3.00 7.00 7.00 3.00 2.00 .50 .15 1 .00 .05 2.00 3.00 2.00 .05 1 .00 .07 .07 1 .00 .15 1.00 .07 .30 2.00 .30 2.00 .30 3.00 3.00 .70 1.50 1.00 1.50 .05 .05 .70 .70 1 .00 .70 1.00 .30 1.50 .10 Ca-pct. Ti-pct. s 2.00 2.00 3.00 5.00 5.00 20.00 3.00 .05 10.00 1.50 2.00 3.00 5.00 .10 2.00 1.50 1.00 1.50 .50 20.00 .07 .20 2.00 .50 3.00 .20 3.00 5.00 ' 3.00 < ' 5.00 2.00 2.00 <.05 .05 5.00 10.00 10.00 5.00 10.00 5.00 3.00 .50 s .300 .500 .500 .500 .500 .100 .100 .002 .200 .020 .700 .700 .700 .010 .300 .050 .030 .300 .020 .100 .015 .200 .700 .150 1.000 .070 .700 1.000 .500 1.000 .500 .300 .005 .015 .150 .150 .500 .200 .300 .300 .300 . 100 Mn-ppm 5 1,000.0 1,000.0 1,000.0 1,000.0 1,500.0 700.0 300.0 30. 0 1,000.0 150.0 1,000.0 1,000.0 1,000.0 20.0 700.0 200.0 150.0 700.0 100.0 300.0 50.0 100.0 1,000.0 150.0 1,000.0 100.0 1,000.0 1,000.0 1,000.0 1,500.0 500.0 300.0 <10.0 10.0 500.0 700.0 700.0 500.0 700.0 700.0 1,000.0 150.0 Aq-ppm s N N N N N N N 1.5 N N N N N N N N N N N N N N N N N N N N N N <.5 N N N N <.5 N N N N N N As-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Au-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N R-ppm s 00 N N N N N <10 N N 10 10 20 20 10 15 10 <1 0 <1 0 <10 N 00 10 N N 10 N N 20 10 N 2D 30 N N N N N N 10 100 10 N Ba-ppm s 1,000 1 ,000 300 700 700 300 100 20 <20 <20 1 ,000 1,500 1,000 <20 150 150 150 500 100 100 300 <20 1,500 <20 2,OOC N 1 ,000 1,500 <20 300 1,000 2,000 <20 200 N 150 20 100 20 300 500 100 Be-ppm s <1.0 <1 . 0 <1 . 0 <1 .0 <1.0 N 1.0 N 1.5 N 0 .0 <1 . 0 <1 . 0 N 1.0 N N N N N N N N N N N N <1 .0 < 1 .0 N <1.0 1.0 N N <1.0 2.0 <1 .0 N <1 . 0 N n N Bi-ppm s 15 N N N N N N >1,000 N N N N N N N N N N N N N N N N N N N N N N N N N N N N V N N N N N Cd-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Co-ppm s 7 10 30 5C 20 7 10 15 7 <5 20 30 20 <5 10 N <5 7 N N N N 20 N 50 N 30 20 10 30 10 N N N 10 5 7 7 7 <5 10 N Table 3. Semiquantitative spectroqraphic analyses of outcrop samples from the U.S. Virgin Islands.--Continued Sanple 8USC523R 8USC52UR 8USC525R 8USC526R 8USC527R 8USC528R 8USC529R 8USC53 r,P 8USC531R 84SC532R 84SC533R 8USC53UR 84SC535R 8USC536R 8US3537R 8USC538R 8USC539R 8USC5UOR 84SC5U1R 84SC5U2R 8USC5U3R 8USC5UUR 8USC5U5R 8USC5U6R 8USC5U7R 8USC5U8R 8USC5U9R 8USC550R 8USC551R 8USC552R 8USC553R 8USC55UR 8USC555R 8USC556R 8USC557R 8USC558H BUSC559R 8USC560R 8USC561R 8US2562R 8USC563R 8USC56UR Cr -ppm s 10 200 700 700 150 20 15 10 10 15 20 20 N 00 15 10 10 20 10 10 15 20 50 15 50 <10 50 10 10 15 50 10 10 <10 200 50 70 50 200 10 20 <1 0 Cu-ppm s 70 100 100 70 30 30 200 2,000 10 7 100 100 100 30 70 15 7 20 <5 10 <5 50 150 30 150 30 150 100 30 100 100 30 f, <5 100 30 50 30 70 20 70 5 La-ppm s <20 <20 <20 <20 20 <20 <20 N <20 <20 <20 20 <20 N <20 N <20 <20 <20 <20 N N <20 N <20 N <20 <20 <20 ', ' N N <20 N N <20 N N N <20 N N N Mo-ppm B N N N N N N N 15.0 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N H Nb-ppm s N N N N N N N N N N N N N N N N N N N N N N N N » N N N N N N N N N N N N N N N N N Ni-ppm s 15 100 200 200 30 7 20 15 15 5 15 15 10 7 10 <5 5 7 5 7 7 20 15 5 20 <5 20 7 5 15 50 10 5 7 150 30 20 50 100 5 10 <5 Pb-ppm s 10 10 10 10 00 N 15 50 N N <10 5 <1 0 N <10 N N 10 N N N N N H 10 N < 10 < 10 N <10 10 <10 N N 10 00 <10 N < 1 0 <10 <10 N Sb-ppm Sc-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N s 7 20 30 30 30 7 <5 N <5 N 20 30 30 N 15 N N 10 N <5 N <5 30 <5 30 . N 30 20 15 30 20 10 N N 5 5 20 5 15 10 20 <5 Sn-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Sr-ppm s 300 500 200 300 700 200 N N N 000 500 700 700 N OOO 150 N 300 N 200 N N 500 N 700 N 700 700 700 700 500 1,500 N N N N N N N 1,000 1,000 H V-ppm 5 100 200 200 200 300 70 200 300 70 50 300 300 300 <10 200 100 70 200 30 20 00 30 300 70 500 15 300 300 2CO 500 200 70 <10 < 10 70 70 100 30 500 200 200 30 W-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Y-ppm s 15 20 20 20 30 20 <1 0 N 15 N 20 20 30 N 15 N N 10 N 10 N N 20 H 20 N 20 30 15 30 20 30 N N N N 20 N 20 15 20 N Zn -ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 200 N N N Table 3. Semiquantitative spectrographic analyses of outcrop samples from the U.S. Virgin Islands.--Continued Sample 8USC523R 8US352UR 8USC525R 8USC526R 8USC527R 8USC528R 8USC530R 6USC531R 8US3532R 8U5C533R 8USC535R 8USC536R 814S3537R 8USC538R 8USC539R 8USC5U1R 8USC5U3R 8US25UUR 8USC5U5R 8US25U6R 8USC5U7R 8USC550R 8USC551R 8«SC552P 8«4SC553R 8USC55UR 8USC555R 8USC556R 8USC557R 814SC558R 8UFJC559R 8USC561R 8USC563R Zr-ppm s 30 50 50 70 30 10 N N 150 N 150 150 150 N 100 10 10 5C <10 100 N 20 150 10 150 <10 150 150 50 150 100 300 N N 20 20 50 30 100 100 30 15 Th-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Table 4. Semiquantitative spectrographic analyses of soil samples collected on the U.S. Virgin Islands. [N, not detected; <, detected but below the limit of determination shown; >, determined to be greater than the value shown.] Lanple LATITUDE LONGITUD S-FE% S-KG% S-CAE S-TIt S-AG S-AS S-BI S-CD S-CO S-CR to 8 3 ~ T " 0 1 S 6JST007S 83^10035 83TT004S 83GT005S 83FTG06S R3L:TOG7S 83ST008S 83i-T009? P3^roio?; pj~rons 83?T012S 83STT13S 83STO 14S 83ST015S 83SP°17S 8357T.018S 83ST019S 83SP021S 83SP022S 83ST023S 83SP024S 83STD25S 83SP327S 83STD29S 83ST03rS fl3ST031S 83ST044S 83SPOI45S 83ST046S 83SP049S 83ST052S 83ST062S 83ST063S 83FPC67S 83ST068S 83ST069S 83ST070S 83SP071S 83ST072S 835T073S 83 C T074S 83FT075S 83SP076S P35T077S 18 18 18 18 18 18 18 18 18 1P 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 16 18 18 18 18 18 18 18 18 18 18 18 20 20 20 19 19 19 18 17 18 18 18 18 18 18 18 19 19 18 18 21 20 20 21 21 24 24 22 22 20 19 18 19 22 24 19 19 19 19 19 19 19 20 19 19 19 146 148 23 15 3* 2 41 52 0 6 10 54 33 26 24 18 19 42 27 15 47 21 17 52 7 35 1 24 4 42 58 48 52 20 41 59 36 40 42 19 27 5 44 34 12 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 65 64 64 64 64 64 64 64 64 64 64 64 64 64 65 65 64 64 64 64 64 64 64 64 64 64 64 53 52 51 50 50 49 49 49 49 49 40 50 51 52 52 56 57 57 0 59 58 50 52 53 54 54 54 59 56 56 53 57 3 3 51 51 51 52 52 53 53 53 53 54 54 14 44 58 24 13 40 41 2 25 34 44 50 52 14 28 34 7 37 6 39 36 42 54 35 45 29 24 27 15 / T 28 31 40 36 14 14 40 23 25 29 28 3 0 35 42 5.0 5.0 5.0 5.0 5.0 7.0 7.0 2.0 2.0 1 .5 7.0 7.0 5.0 7.0 7.0 5.0 5.0 3.0 1.5 3.0 5.0 3.0 5.0 5.0 5.0 5.0 5.0 7.0 3.0 7.0 1.5 2.0 3.0 5.0 3.0 3.0 2.0 2.0 1.0 5.0 3.0 5.0 5.0 7.0 1.5 1.00 1.50 1.50 2.00 1.50 2.00 1.50 .15 1.00 .30 1.00 2.00 1.00 .30 1.50 1.50 1.00 1.00 .70 1.00 1.50 .30 1.50 2.00 1.50 .70 1.00 1.50 .20 2.00 .50 .30 1.00 .15 .30 .70 .30 .50 .15 1.50 .50 .70 .50 2.00 .30 .30 1. C 0 2.00 1.00 2.00 2.TO 1 .00 .07 .07 .07 .20 2.00 .10 .07 1.00 1.00 .50 .70 .07 1.50 2.00 7.00 .50 3.00 2.00 2.00 1.50 1 .00 .15 2.00 .30 .10 1.00 2.00 .15 .70 .20 .30 .15 .70 .50 1.00 .20 1.50 .10 .50 .50 .50 .3* .3n .30 .50 .3D .30 .30 .70 .50 .30 .70 .70 .30 13.00 .30 .20 .20 .30 .20 .50 .50 .50 .50 .50 .50 .30 .50 .3D .30 .30 .30 .30 .30 .30 .20 .30 .30 .20 .50 .30 .50 .30 700 1,500 1 ,000 1,000 1,000 1 ,000 1 ,500 100 1,000 1,300 1,000 2,000 1,000 2,000 1,500 1,500 1 ,500 1,000 700 1,000 1,000 1,000 1,000 1,500 1 ,000 1,000 2,000 2,000 3,000 1,000 500 500 2,000 500 1,500 1 ,000 1,500 1,000 150 700 700 1,500 500 1 ,500 500 N N N <.5 N N N N N V N N 3.0 N N N N N N N N N N N N N N N N N 1.5 1 .5 1 .5 1.5 1 .5 N N N 2.0 N N 5.0 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N V N N N N N N N N N N N N N N N N N N N N N N N N N S N N N N N N N N N N N N N N N N N N N N N N N S' N N N N N N N N N 10 15 10 10 <1C 10 20 20 15 15 10 10 10 15 15 10 15 00 20 30 50 N 15 10 10 N 10 20 20 15 20 10 <10 <10 50 10 30 30 50 10 15 20 50 1C 10 700 500 150 100 70 70 100 150 300 200 300 300 1,000 100 700 150 150 200 200 100 200 30 300 500 200 200 500 700 150 70 70 300 500 150 150 200 200 200 700 50 70 150 150 20 50 N <1.0 N N S N N <1.0 <1.0 <1.0 N <1.0 1 .0 N N <1.0 <1.0 N <1.0 N S' N N N N <1.0 <1.0 N <1.0 N <1.0 <1.0 N S <1.0 <1.0 <1.G 1.0 <1.0 N <1.0 <1.0 <1.0 S <1. 0 N N N N N N N N N N N N N N N N N N N N N N N N N S N N N N N N N N N N N N N N N N N N N S' N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 10 15 20 20 30 30 15 N 5 <5 15 10 10 50 20 10 5 10 5 15 20 10 20 30 20 15 20 30 10 30 5 5 10 7 15 7 10 7 <5 20 10 10 7 2C 5 15 70 30 100 50 150 30 10 20 10 50 <1f. 20 100 50 70 10 10 20 30 30 15 30 30 50 30 15 <10 N 70 50 10 20 70 30 15 20 10 70 100 5C 20 20 150 15 Table U. Semiquantitative spectrooraphic analyses of soil samples collected on the U.S. Virgin Islands.--Continued CO Sample 8 3 ? I " 0 1 F 83 c-roo?s 83-313033 8 3 F T 0 0 (j S 83~TOC5S e3Gr::5s P3ST007S 83?rooss 83Sin09S 83ST010S 83510113 63510123 63STC13S 83ST 3 1US 83~r015S 83ST017S 83Sr"163 63510193 8351021 53 83STC72S 835T323S 83Sr02US 83310253 83ST027S 83ST029S 83SI030S 83ST031S 83STOUI4S 83SrOU5S 83SrO<463 83FTOU9S 83ST052S 83510623 83310633 83310673 83ST068S 83STD69S 83310703 83ST371S 83ST072S 83Sr073S 83ST07US 83STC75S 83ST076S 83ST077S s-ru 100 100 100 100 1 C 0 15C 100 10m 5 3H 2 n 2,000 150 200 30 15 30 50 50 100 100 150 100 100 1 C 0 100 200 10 200 20 5 70 70 30 50 20 20 20 150 30 100 20 100 15 S-LA <20 20 20 <2o <2& N <20 N <20 <20 N N <20 <20 N <20 20 N 20 <20 <20 <20 N 20 20 20 <20 N <20 N <20 <20 <20 <20 <20 <20 20 <20 20 N <20 N N N <20 S- M 0 N N" N N N N N N N N 5 N 7 N N N N N N N N N N N N N N N N N N N N N N N N N 5 N N N N N N S-NR N N N N N N N N N N N N N N N N N N N N N N N N N N N N N ' N N N N N N N N N N N N N N N N * " N I 7 30 15 30 20 5^ 15 5 7 5 20 <5 10 100 20 20 c 5 10 10 15 <5 10 20 15 7 10 10 5 30 5 5 7 5 10 7 10 5 5 30 20 15 10 70 5 S-PR 10 20 10 30 15 10 15 <10 <10 <10 10 1C 15 10 10 10 15 50 100 10 10 30 10 15 <10 15 15 10 50 15 10 10 15 <10 20 <10 20 50 100 20 20 30 15 50 <10 F--SB N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N s-sr 30 20 30 30 30 30 30 7 7 7 20 10 10 30 30 20 15 15 10 20 30 20 20 30 30 30 20 30 15 30 10 7 20 20 15 20 15 15 10 20 15 20 20 20 10 S-SN N N N N * N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N S-SR 100 3CO 300 150 300 300 300 N N N N 200 <100 N 200 200 200 200 N 200 150 300 150 500 500 500 500 300 <100 300 100 100 200 300 100 150 150 100 N 100 <100 150 N 150 N s-v 300 200 200 200 300 300 300 30 50 30 150 200 150 300 500 150 150 200 50 200 300 200 200 300 300 300 200 300 70 300 30 30 200 200 150 150 100 70 70 200 150 300 100 300 30 S-W N' N N N N N N S S N N N N N N N N N N N N N N N N N N N N N N N N N M N N N N N N N N N N S-Y 20 20 15 15 20 15 20 30 30 20 30 20 20 20 15 20 30 15 30 10 20 10 20 20 20 20 15 20 20 20 30 15 20 10 20 20 20 20 15 15 15 20 20 20 20 S-ZN N N N N N N N N N N N N 2,000 300 N N N N N N N N N N N N N N N N N N N N N N N N <200 N N <200 N N N S-ZR 30 70 30 30 30 30 30 100 150 70 70 70 70 50 30 30 100 50 100 15 20 10 50 70 50 50 50 30 70 30 70 70 30 30 50 30 50 50 50 30 30 70 70 30 50 S-TH N N N N N' N N N N N N N N N N N N N N * N N N N N N N N N N N N N N N N N N N N N N N N N Table Semiquantitati ve spectroqraphic analyses of soil samples collected on the U.S. Virgin Islands .--Continued b' a m p 1 f> LATITUDE LONGITUD S-FEI ?-KG% S-TI* S-HN S-AG S-AS ?-AU S-B S-RA S-BI S-CT> s-co 83ST078S 83SI079S 8 3 S T 0 8 1 S 83 c TOf!?S 83ST083S 83ST065S 83ST086? 83STC87S 83STGP8S 83FT089F 83^10905 8 3ST091S 83STC97S 83FT093S 83srr94s sasrrqfas 83srrg6s 83ST097S 83ST098S 83ET099S 835T102S 83ST1D3S 83ST104S 83ST 105S 83ST106S 83ST108S 83ST109S 83ST1 10S 83^T1 11S 84SJ001S 84SJ002S 84SJ003S 84SJ004S 84SJ005S 84SJ006S 84SJ007S 84SJ008S 84SJ009S 84SJ010S 64C-J011S 84SJG12S 84SJ013S 84SJ014S 8 45.10 155 84FJ016S 18 19 18 19 18 20 18 20 18 20 18 21 18 21 18 21 18 22 18 22 18 21 18 21 18 21 18 21 18 20 18 21 18 21 18 20 18 20 18 20 18 18 18 18 18 21 18 21 18 21 18 21 18 21 18 20 18 19 18 20 18 20 18 20 18 20 18 21 18 21 18 21 18 21 18 21 18 21 18 21 18 21 18 21 18 21 18 21 18 21 1 1 30 18 12 15 32 17 43 1 1 q 5? 39 32 4 45 15 28 44 49 58 28 57 33 44 43 50 34 48 5? 27 29 49 53 8 12 12 12 16 57 57 54 38 28 50 27 64 53 64 54 64 54 64 54 64 53 64 54 64 55 64 56 64 57 64 57 64 58 65 0 65 1 65 1 65 1 65 0 65 1 64 56 64 57 64 57 64 50 54 49 64 50 64 49 64 49 64 52 64 51 64 51 64 50 64 47 64 47 64 46 64 46 64 46 64 46 64 45 64 45 64 45 64 44 64 44 64 43 64 44 64 44 64 43 64 43 59 16 24 12 30 30 16 31 8 38 35 55 5 22 22 10 55 55 8 46 0 55 21 32 42 12 46 45 47 22' c. 6 51 36 30 5 49 21 Q 29 17 40 6 22 6 42 7.0 5.0 7.0 5.0 3.0 5.0 3.0 5.0 5.0 3.0 5.0 5.0 7.0 7.0 7.0 7.0 5.0 5.0 7.0 7.0 3.0 3.0 7.0 7.0 7.0 7.0 10.0 7.0 10.0 3.0 3.0 5.0 5.0 7.0 7.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 7.0 7.0 3.0 .70 1.50 .70 .70 .70 .70 .70 1.00 .50 1.00 .70 1.00 1.00 1 .00 1.00 1.50 .70 1.00 1.50 2.00 1.00 .70 1.50 1.50 2.00 2.00 2.00 1.50 2.00 .70 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 3.00 1.00 1.50 2.00 1.00 .70 1.00 1.00 .70 1.50 1.00 1.50 .70 1.50 .50 .70 2.00 1.50 1.00 1.00 1.50 .70 1.00 1.00 10.00 15.00 3.00 3.00 3.00 3.00' 2.00 2.00 7.00 3.00 2.00 3.00 3.00 3.00 3.00 1.50 1.50 2.00 10.00 5.00 2.00 5.00 1.00 1.0C .30 .50 .50 .50 .50 .30 .30 .30 .30 .30 .50 .50 .50 .50 .50 .50 .50 .30 .50 .30 .50 .50 .50 .50 .50 .50 .50 .70 .70 .30 .70 .50 .70 .70 .50 .50 .50 .70 1.00 .50 .50 .70 1.00 .30 1,500 1,000 1,500 1,000 700 1,000 700 2,000 1,000 1,000 1 ,000 1,000 1,500 1 ,000 1 ,500 1,000 1 ,000 1,500 1,000 1,500 1 ,500 700 1,000 1 ,000 2,000 1,500 1 ,000 2,000 5,000 1,000 1,500 1,500 1,500 2,000 1 ,500 1,500 1,500 1,500 2,000 2,000 1,500 1,500 1,000 1 ,500 1,500 N N N N N N N N N N N N N N N N N N N N N N N N N 3.0 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N V N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N <10 15 15 10 20 <10 15 15 10 15 20 15 30 15 20 15 10 15 10 20 10 10 10 N 00 N 30 20 N 20 20 20 20 30 30 30 20 30 20 30 15 20 <10 10 N 150 20 500 300 150 150 500 200 150 300 300 200 300 150 100 150 200 100 150 150 150 150 700 500 150 500 700 700 1,000 300 150 150 150 200 200 150 200 150 300 500 1,000 300 150 1,000 150 S S N <1 . 0 0.0 0.0 <1 . 0 N <1 . 0 H N N N N N N N N N N 0.0 <1 . 0 <1 . 0 N N S <1 . 0 <1 . 0 N <1 .0 <1. 0 N N < 1 . 0 0.0 0.0 N H <1 . 0 <1.0 0.0 N <1 . 0 <1 . 0 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N K N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N K K N N N N N N K N N N N N N N N N N 20 20 20 20 10 15 10 20 10 20 30 20 30 30 30 30 20 20 30 20 10 10 20 10 20 20 30 30 50 7 7 20 15 30 15 15 15 15 15 15 20 15 20 30 10 20 50 15 10 50 30 20 30 15 20 30 10 15 15 30 30 20 20 50 20 70 30 30 20 00 50 50 50 <10 30 20 70 50 50 50 70 50 20 30 50 50 50 70 70 20 Table 4. Semiquantitative spectroTraphic analyses of soil samples collected on the U.S. Virgin Islands.--Continued F a m p 1 e S-CU S-LA S-MO 5-NB S-NI S-PB S-SB S-SC S-SN S-SR S-V S-W S-Y S-ZN S-ZR S-TH cn CJ1 P3~rG78S 83^1979$ 83SP081S 83SP082S 83STOP3S 83ST085S 83FTG86S 83ST087F; 83STT88S 83SrOH9S 83SP090S 83ST091S 83F:T092S P3ST093S Rssrngur B3ST095S 83ST096S 83ST097S 83ST098S 83ST099S 83ST102S 83ST1D3S 83ST10US 83ST105S 8^Sri06S 83^1108^ 83SP109S 83ST110S 83ST 111? 8USJ001S 8U5JOC2S 8USJOG3S 8USJ30US 8USJ005S 8USJ006S 8USJ007S 64SJ008S 8USJ009S 8USJ010S 8USJ011S 8USJ012S BU5J01 ?S 8U5J01US 8USJ015S PUS J016S 150 100 100 70 70 70 50 150 50 100 150 150 150 200 150 200 150 100 150 100 50 50 200 150 100 100 200 2CO 500 70 100 100 100 150 100 100 100 150 100 150 300 200 200 200 300 N N <20 <20 <20 <20 N N N <20 N N N N N N <20 <20 N N <20 <20 <20 N N <20 N <20 N 20 20 <20 <20 <20 <20 N 20 N N <20 N K N <20 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N NN ' N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 10 30 7 5 10 10 10 15 10 20 15 10 15 15 15 15 10 10 20 15 15 15 30 20 10 15 20 30 15 15 10 20 20 50 20 20 20 15 10 20 70 20 15 70 <5 70 50 30 30 50 10 30 30 20 20 30 20 <10 <10 10 10 10 50 15 <10 10 100 20 15 20 20 20 20 20 20 20 15 15 30 30 15 10 10 15 30 <10 70 10 20 <10 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 20 20 20 20 20 20 15 20 20 20 20 20 20 30 20 30 20 20 20 30 20 15 20 20 20 20 20 20 30 7 5 10 15 20 20 20 20 20 15 20 10 15 20 20 15 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 300 150 300 150 200 300 300 200 200 300 150 2CO 200 100 300 200 200 150 200 300 150 200 300 1,500 200 500 300 500 200 300 150 150 150 150 200 150 200 100 150 300 500 1,000 150 700 N 500 300 300 150 200 200 150 300 100 200 300 300 500 500 500 500 300 300 300 300 200 200 300 200 500 300 200 200 700 200 150 300 300 300 300 300 300 300 200 200 200 200 300 300 300 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 30 10 20 20 20 15 20 15 20 20 20 20 20 20 20 20 20 20 15 20 20 20 20 15 20 15 20 20 20 20 15 15 20 20 20 20 20 20 20 30 20 20 20 30 15 N N N N N N N N N N N N N N N N N N N N N N N N N N N N <200 N N N N N N N N N N N N N N N N 70 15 30 30 50 50 30 20 70 30 20 20 30 30 30 20 30 30 20 15 30 30 50 30 70 50 50 50 50 150 30 30 50 50 70 50 50 20 50 70 50 50 50 100 15 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N V N N N N N N N N N N N N Table 4. Semiquantitative spectrographic analyses of soil samples collected on the U.S. Virgin Islands.--Continued Sample LATITUDE LONGITUD S-FF7. S-MG% S-CA7. S-TI% S-AG S-AS S-AU S-R S-PA S-BF ?-RI S-TD S-CO S-CR 84SJ017S 84SJM8S 84SJ02GS 8USJ021S 84SJC-22S 84SJ023S 84?J025S 84SJ026S 84SJ027S 84?J02RS 8USJ529S 84F:J030S 84^10325 84SJ033S 8uSJn 3 4S 84SJ035S 84SJ036S 845J037S 84FJ038S 84^J04?S 84SJOU4S 84?JC46S 84L-J048S 84SJ049S 849J05GS 84SJ051S 84SJ053S 84SJ054S 84SJ055S 84SJ056S 84SJ057S 84SJ058S 84SJ059S 84SJ060S 84SJD61S 84FJ062S 84SJ063S 84SJ064S 84SJ065S 84SJ066S 84SJ^67S 84SJ068S 84SJ069S 84SJ070S 84SJ071S 18 21 15 18 21 7 18 21 30 18 21 4 18 20 57 18 20 55 18 20 42 18 21 29 18 21 33 18 21 9 18 2D 20 18 20 33 18 20 17 18 20 3 18 19 44 18 19 19 18 19 10 18 19 ^ 18 19 15 18 19 39 18 19 24 18 19 26 18 19 39 18 19 44 18 19 35 18 19 29 18 20 27 18 20 29 18 20 19 18 20 21 18 20 7 18 20 4 18 19 22 18 20 15 18 20 5 18 20 4 18 20 2 18 20 8 18 20 11 18 20 16 18 20 21 18 20 29 18 20 33 18 2C 39 18 20 3? 64 43 64 42 64 42 64 43 64 43 64 43 64 43 64 41 64 41 64 40 64 40 64 40 64 42 64 42 64 42 64 42 64 42 64 42 64 43 64 43 64 44 64 43 64 45 64 45 64 45 64 45 64 45 64 45 64 45 64 45 64 45 64 45 64 46 64 43 64 43 64 43 64 43 64 43 64 43 64 43 64 43 64 43 64 44 64 46 64 46 2 48 4 24 29 27 5 45 27 59 23 26 49 31 14 5 23 45 9 20 4 44 57 48 30 27 32 34 36 41' c, 42 51 48 17 29 34 39 40 40 42 51 59 15 18 7 3.0 10.0 10.0 5.0 3.0 3.0 5.0 2.0 3.0 10.0 10.0 10.0 3.0 5.0 3.0 7.0 7.0 2.0 10.0 5.0 2.0 3.0 5.0 3.0 5.0 3.0 7.0 7.0 5.0 7.0 2.0 3.0 10.0 2.0 5.0 3.0 3.0 5.0 10.0 5.0 3.0 2.0 7.0 10.0 7.0 1.50 2.00 2.00 1.50 1.00 1.00 1.50 .50 .70 3.00 2.00 2.00 1.00 1.50 2.00 2.00 2.00 .70 2.00 1.00 1.00 1.50 1.50 .70 1.00 2.00 2.00 2.00 2.00 2.00 .30 .70 2.00 1.00 1.00 1,00 .70 .30 .20 .30 .70 .70 3.00 3. DO 1.00 1.50 1.50 2.00 1.50 1.50 1.50 2.00 1.00 1.50 .50 1.00 1.50 1.50 2.00 1.00 1.00 .50 1.^0 2.00 1.50 2.00 2.00 1.00 1.50 1.00 . 15 3.00 3.00 2.00 3.00 1.50 1.50 3.00 .20 2.00 .20 .50 .05 <.05 <.05 <.05 1.00 1.50 5.00 5.00 .50 .70 1.00 .70 .50 .70 .70 .30 .50 1.00 1.00 1.00 .70 1,00 1.00 1.00 .70 .50 1.00 .70 .50 .53 .70 .70 ,70 .70 .70 1.00 .70 1.00 .70 .70 .70 .30 1.00 .50 .50 .50 .70 .70 1.00 .50 .70 .70 .70 1,500 1,503 2,000 1,500 1,000 1,500 3,000 1,000 1,000 2,000 2,000 2,000 1,000 1,500 1,000 2,000 700 1,000 1,500 1,000 700 700 700 700 1,000 1,000 1,500 1,000 1,000 2,000 500 1,000 2,000 500 1,000 500 300 700 70 70 150 700 700 1,000 1,500 N N N N N N K N N N N N K N N N N K N K 3.0 N N N N N N N N N N N N <.5 N N N N N N N N N N K N N N N K N N N N N N N N N N N N N K N N N N N N N N N N N N N N N N N N N N N N N N N N N N K N N N N N N N N N N N N N N N N N K N N N N N N N N N N N N N N N N N N N N N N N N 20 15 N N 10 10 N 20 15 30 20 15 20 15 30 20 15 20 20 20 30 30 20 30 30 30 N 15 20 20 20 30 20 30 50 20 10 30 30 30 20 30 10 20 30 100 150 700 200 150 500 200 200 300 70 200 150 300 150 150 300 200 200 200 300 150 200 150 300 300 500 500 150 150 150 150 200 300 3,000 700 700 1,000 700 5,000 500 3,000 300 300 150 300 N N 1.0 N <1.0 <1.0 N N N N y N N N N N N N N N <1.0 N N N N K N N N N <1 . 0 <1 . 0 N <1 . 0 0.0 0.0 <1 . 0 0.0 N 0.0 N <1 . 0 <1 . 0 N N N N N N N N N N N N N N N N N N N K N N N N N N N N N N N N N N N N H N K N N N 00 N N N N N N N N N N N N N N N N N N N N K N N N N N N N N N N N N N N N N N N N N N N N N N N N N 10 30 20 10 5 7 10 <5 5 30 20 20 5 10 15 10 10 N 20 10 <5 5 7 <5 10 <5 10 15 10 15 5 7 30 N 10 <5 10 20 N N N 5 10 30 20 20 20 20 30 30 20 20 20 50 30 70 70 20 30 50 50 150 50 70 50 20 50 20 20 30 15 50 70 150 200 15 30 50 20 20 15 15 20 50 15 20 15 70 150 70 Table t. Fpmiouantitative spectroaraphic analyses of soil samples collected on the U.S. Virgin Islands.--Continued Sample S-CU S-LA S-MO S-NB S-NI S-PB S-SB S-SC S-SN S-SR S-V S-H S-Y S-ZN S-ZP P-TH 8USJ017S 8UFJ018S 8USJ020S 8USJC21S 8USJ022S 84SJ023S 8USJ025S 84SJ026S 8USJ027S 8UGJ02BS 8USJ029S RUSJ030S 8UTJ0325 8USJ033S e«FJ03<4S 8USJ035S 8USJ036S 84SJ037S 814SJ038S 8USJ042S BUSJOUUS eusjrues 8USJOU8S 814SJOU9S 8USJ050S 8USJD51S 8^SJOb3S 8USJ054S 84SJ055S 8<4?J056S 84SJ057S R4SJ058S 8USJ059S 8UCJ060S 8/4SJ061S 8USJ062S 84SJ063S 8USJ06<4S 84PJ065S 8USJ066S 8/4SJ")67S 8USJ068S 8USJ069S 8USJ070S 8HSJ071S 200 500 150 70 TO 70 100 30 30 200 300 70 30 70 70 100 70 30 200 70 30 ^0 50 70 70 500 150 200 50 100 10 30 500 500 100 15 20 300 700 700 500 20 30 200 150 <20 N <20 <20 <20 <20 <20 <2C <2C <20 N N 20 N N N N <20 N <20 <20 <20 <20 <20 <20 <20 N N N <2C <20 <20 N <20 <20 N N <20 <20 <20 N <20 N N <20 N N 20 N N N N N N N 50 N N N N N N N N N 100 N N N N N N N N 10 ' c, N N 15 N N N N N 100 20 200 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N <5 15 15 5 5 5 10 <5 7 15 70 20 10 20 20 15 50 <5 70 20 20 5 5 7 15 <5 7 20 20 70 5 10 100 10 10 10 10 10 10 7 10 10 30 70 20 15 < 10 10 10 10 20 10 10 15 10 10 15 20 50 50 15 15 < 10 10 10 10 50 15 15 15 15 20 30 10 15 < 10 10 15 100 30 20 <1 0 70 150 15 30 <1 0 10 20 20 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 10 30 20 15 10 10 10 5 5 15 20 20 15 20 20 15 20 7 30 20 10 10 20 10 15 10 30 30 20 30 10 15 30 5 20 15 15 5 5 10 10 10 20 30 30 N N N N N N N N N N N N N < 10 N N N N N N N 50 N N N N N N N N N N 15 N N N N N N N N N N N N N <100 300 150 100 100 <100 100 100 N <100 100 150 300 100 N N N mo 150 100 200 <100 150 N N 200 300 200 200 100 100 500 N SCO <100 <100 N N N N 100 100 300 500 300 500 300 200 150 150 300 70 150 500 300 300 150 200 200 200 300 150 500 200 100 150 150 150 200 70 700 700 300 500 150 150 300 500 300 150 200 200 300 200 200 150 300 700 700 N N <50 N N N N N N N N N N N N N N N N N <50 N N N N N N N N N N N N N N N N N N N N N N N N 20 20 70 20 20 30 20 30 30 30 30 30 30 30 30 30 30 30 30 30 50 30 50 30 30 30 30 20 20 30 20 30 30 10 30 30 30 20 20 30 15 30 30 30 30 N N N N N N N N N' N N N N N N N N N N N N N N N N N N N N N N N 3,000 N N N 500 N N s N N N N 20 30 200 50 70 70 50 70 100 50 100 100 100 100 70 150 70 70 70 150 70 100 70 1CO 100 150 70 50 70 70 70 100 100 70 150 100 100 70 100 200 200 100 200 70 70 N N N N N N N N N N N N K N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Table 4. Semiquantitative spectrographic analyses of soil samples collected on the U.S. Virgin Islands.--Continued Sample LATITUDE LONGITUD S-FE7, S-KGK S-CA* S-TIK S-MN S-AG S-AS S-AU S-B S-BA S-BE S-BI S-CD S-CO S-CB CO 84SJ072S 84SJ073S 84SJ074S 84?J075S 84SJ076S R[4 c JD77s 84SJ078S 84SJ079S 84SJ081S 8USJC82S 84SJ083S 94SJ084S 84SJ!">ft5S 84SJ086S 84FJ087S 84?JOPflS 84SJ090S 84SJ091S 84SJ092S 8<4?J093S 845J094S 84SJ097S 84SJ098S 84SJ099S 84SJ100S 84SJ101S 84SJ102S 84SJ103S 84SJ104S 84SJ1C5S 84SJ106S 84SJ107S 84SJ108S 84SJ109S 84SJ110S 84SJ20CS 84SJ201S 84SJ202S 84SJ203S 84SJ205S 84SJ206S 84SJ207S 84SJ601S 84SJ602S 84SJ603S 18 18 1R 18 18 18 18 18 1R 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 20 20 20 20 20 20 19 20 20 20 20 20 20 19 19 21 21 21 21 21 22 22 22 22 21 20 20 20 20 21 18 18 18 19 19 20 20 20 20 20 20 19 19 20 19 43 20 9 5 U 7 47 10 50 51 31 28 14 58 44 17 45 38 41 43 9 13 21 3 44 58 49 18 44 48 59 40 22 8 43 46 47 40 35 22 14 38 43 5 29 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 45 46 46 Ufi 46 46 46 47 44 44 44 44 44 44 44 47 48 49 49 49 48 44 44 43 42 41 41 40 40 41 43 42 42 41 39 44 44 44 44 44 44 44 46 46 46 40 22 13 16 37 36 40 27 31 32 27 30 23 23 27 36 31 0 16 31 25 55 20 5 32 11 27 6 10 43 r, 15 36 13 21 5 59 56 52 59 4B 52 56 23 24 26 7.0 3.0 3.0 5.0 5.0 5.0 3.0 5.0 5.0 5.0 7.0 5.0 7.0 3.0 3.0 5.0 5.0 10.0 5.0 5.0 5.0 5.0 5.0 7.0 7.0 7.0 7.0 3.0 5.0 7.0 3.0 7.0 7.0 3.0 7.0 3.0 2.0 2.0 5.0 2.0 3.0 5.0 3.0 3.0 3.0 1.50 .70 .70 .70 1.00 2.00 .70 1.50 2.00 2.00 2.00 2.00 2.00 1.00 1.00 2.00 2.00 2.00 1.50 2.00 2.00 1.50 1.50 2.00 1.50 3.00 3.00 1.50 1.50 3.00 1.50 2.00 2.00 .70 3.00 .70 .30 .50 1.50 1.00 .50 2.00 1.00 1.00 1..00 5.00 .70 1.50 1.50 3.00 1.50 1.50 2.00 1.00 1.50 1.50 1.50 1.50 .30 1.50 2.00 1.50 2.00 3.00 20.00 10.00 2.00 2.00 3.00 2.00 2.00 2.00 .50 1.50 3.00 1.00 2.00 2.00 .70 2.00 1.50 1.00 1.00 1.50 1.00 .50 2.00 3.PO 1.50 1.50 .70 .50 .70 1 .00 .70 .70 .50 .70 .70 1.00 .70 .70 .70 .70 .70 .70 1.00 1.00 .70 .70 .70 .70 1.00 1.00 1.00 .70 .70 .70 .70 .70 .70 .70 .70 .70 1.00 .70 .50 .30 .70 .50 .50 1 .00 .30 .30 .30 1,000 700 1,000 700 1,000 700 1,000 1,000 1,500 2,000 1,500 700 1,000 700 1,500 700 1,500 2,000 1,500 1,500 1,500 1,500 1,500 1,500 2,000 1,500 2,000 1,000 1,000 1,500 1,000 1,000 1,500 700 1,500 700 300 300 1,000 1,000 700 1,000 1,500 700 700 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N W N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 30 30 20 30 30 30 30 30 15 20 30 20 20 20 30 20 50 10 30 10 30 30 20 10 30 15 20 20 15 20 50 15 15 10 20 15 20 20 15 50 30 20 70 50 30 300 200 300 300 300 200 150 200 150 300 200 200 300 150 300 500 500 700 1,000 700 500 1 ,000 700 700 150 100 100 150 200 300 500 100 100 150 150 150 200 200 150 200 200 150 100 150 70 N <1 . 0 <1 . 0 <1. 0 <1.0 <1.0 N <1 . 0 <1 . 0 <1.0 <1.0 <1 . 0 <1 . 0 <1 . 0 <1.0 <1.0 <1 . 0 N <1 . 0 N <1.0 <1 . 0 <1 . 0 <1 . 0 N <1.0 N <1 . 0 N <1.0 1.0 N N <1 . 0 N N' <1 . 0 <1 . 0 N <1.0 1.0 N <1 . 0 <1 . 0 <1 . 0 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 10 5 5 7 10 10 10 10 10 10 10 10 10 5 10 20 15 30 10 15 10 10 10 15 15 20 30 10 7 15 5 20 30 7 30 10 5 N 10 5 5 15 15 10 20 100 30 20 20 30 70 100 150 30 50 10 10 10 10 15 30 20 20 10 10 15 15 20 10 20 70 200 10 15 20 10 20 20 10 150 20 20 10 10 10 15 50 100 30 50 Table u. Seraiquantitative spectrographic analyses of soil samples collected on the U.S. Virgin Is]ands.--font!nued Sample S-CU S-LA S-MO S-NB S-NI S-PB S-SB S-SC S-SN S-SR S-V S-H S-Y S-ZN S-ZP S-TH 8U^J072S 8145J073S 814SJ07US 84SJ075S 84SJ076S 8USJ077S 84SJ078S 8HSJ07QS 84SJ081S 814PJ082S 8USJ">83S R4SJOR4S 8««SJ085S 84SJD85S 84SJ087S 84SJ088S 84SJ190S 8143JC91S 814SJ092S 8USJ093S 84SJ094S 84SJ097S 84SJ098S 8145J099S 84SJ100S 84SJ1C1S 8USJ1C2S 8USJ103S 8USJ10US 84SJ105S 8USJ1C6S 84SJ107S 8I4SJ108S 8USJ109S 8USJ110S 84SJ200S 84SJ201S 84SJ202S 84SJ203S S4SJ205S 84SJ206S 8USJ207S 84SJ601S 814SJ602S 84SJ603S 100 50 10 50 70 70 100 70 50 100 50 50 150 30 50 150 200 500 150 100 100 200 150 200 70 100 300 70 30 300 20 150 70 7 100 70 20 10 100 15 20 150 100 70 100 <20 20 <20 <20 <20 N <20 1 <20 <20 N N N <20 <20 <20 <20 N <20 N <20 <20 N N N N N <20 <20 N <20 <20 <20 <20 <20 <20 <20 <20 N <20 <20 <20 <20 20 <20 N N N N N N N N N N N N 15 N N N N N N N N N N N 30 N N N N N N N N N N N <5 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N ' N N N N If H N N N N N N N N N N 15 7 <5 5 10 70 15 20 15 20 15 15 15 10 10 30 15 15 15 15 7 20 15 15 15 30 30 7 7 15 5 50 30 <5 100 <5 <5 <5 10 <5 5 50 15 15 15 30 10 <10 10 10 10 10 15 10 15 15 10 15 10 10 15 20 10 200 1 5 100 20 20 50 10 10 10 <10 10 10 15 <10 10 10 15 15 15 15 15 10 10 15 30 <10 <10 N N N N N N N N N N N N N N N N N N N N N N N N N H N N N N N N N N N N N N N N N N N N N 30 5 5 15 20 10 20 15 20 15 20 20 20 10 10 15 10 30 7 10 10 15 10 20 20 30 20 7 7 15 7 30 30 15 20 15 10 7 20 10 15 20 30 15 30 N N N N N N N N N N N N N N N N N N 100 N N N N N N N N N N N N N N N N N N N N N N N N N N 300 N N 150 300 300 100 5CO <100 150 200 150 100 N 300 300 300 500 1,000 2,000 700 300 500 300 150 100 100 N <100 300 N 200 200 100 150 N N <100 100 100 N 150 200 300 200 700 150 70 200 500 300 300 300 200 200 200 300 200 100 150 200 200 500 200 200 200 200 200 300 300 500 300 150 200 300 70 300 500 200 500 300 100 70 300 150 70 700 200 200 300 N K N N H N N N N K N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 30 30 20 30 20 15 20 20 20 30 50 30 30 30 30 2C 20 30 20 20 20 30 20 30 30 20 30 30 30 20 30 20 20 20 30 20 15 20 20 15 50 20 15 15 15 N N N N N N N N N N S N 200 N N N N N 200 N N N N N N N N N N N N N H N N N N N N N N N N N N 70 100 150 150 100 100 30 100 70 100 100 1CO 100 100 70 70 150 50 100 50 70 100 70 70 50 50 70 100 70 100 100 30 30 150 70 70 70 100 100 70 150 50 30 50 30 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N' Table 4. Semiquantitative spectrographic analyses of soil samples collected on the U.S. Virgin Islands.--Continued Sample 84SJ6C4S 84SJ605S 84SJ606S 84SJ607S 84FJ608S 84SJ609S 84SJ610S 8USJ61 1S 8U?J612S 84 c:J613S 8U?J614S 84SJ615S 8USJ616S 84SJ617S 84SJ618S R4SJ619S 84SJ620S 84SJ621S 84SJ622S 8USJ623S 8USJ624S 84SJ625S 84SJ626S 84SJ627S 84SJ62RS 84SJ629S 84SJ630S 84SJ631S 84SJ632S 84SJ633S 84SJ634S 84SJ635S 84SJ636S 84SJ637S 84SJ638S 84SJ639S 84SJ640S 84SJ641S 84SJ642S 84SJ644S 84SJ645S 84SJ646S 8USJ647S 84SJ648S 84SJ649S LATITUDE 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 19 24 19 47 21 14 21 33 21 27 21 41 21 5R 22 2 21 59 21 57 21 35 21 14 21 11 21 10 20 55 20 39 20 34 20 34 20 19 19 54 20 1 20 3 20 17 20 55 21 25 19 38 19 4C 19 10 19 4 19 17 19 24 19 12 18 53 19 12 20 38 20 44 20 44 19 12 19 12 19 22 19 56 20 18 20 44 21 4 21 17 LONGITUD S-FE7. 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 46 45 45 45 44 44 44 44 43 43 44 45 46 46 46 46 47 47 47 47 47 47 46 46 44 47 47 47 47 47 46 46 46 46 46 45 45 45 45 45 45 40 40 40 41 0 55 13 2 54 23 11 29 41 12 16 45 6 38 59 50 14 14 36 56 15 1 42 23 10 39 8 23 19 11 53 56 56 36 24 57 30 33 25 45 55 29 27 51 13 3.0 3.0 5.0 3.0 5.0 5.0 5.0 5.0 5.0 3.0 5.0 5.0 5.0 5.0 3.0 5.0 5.0 5.0 3.0 5.0 5.0 3.0 5.0 3.0 5.0 3.0 5.0 3.0 3.0 5.0 5.0 3.0 5.0 5.0 5.0 5.0 5.0 3.0 5.0 3.0 2.0 5.0 5.0 5.0 3.0 S-MG7. 1.00 .50 2.00 1.50 1.50 2.00 1.50 1.00 1 .50 1.50 2.00 1.00 1.00 3.00 1.50 1.00 2.00 1.50 .70 1.50 1.50 1.00 1.50 1.50 2.00 .70 2.00 .15 1 .50 1.00 .70 .50 1.50 1.00 2.00 2.00 3.00 .70 .70 1.00 .30 1.00 1.00 1.50 .70 S-CR7. S-TIX 1.50 1.00 1.50 2.00 1.00 2.00 2.00 3.00 10.00 20.00 1.50 2.00 2.00 3.00 2.00 2.00 2.00 2.00 2.00 3.00 2.00 3.00 2.00 2.00 1.50 1.50 15.00 .10 .10 1.00 1.50 .15 1.00 1.50 3.00 3.00 2.00 .70 1.50 .70 1.50 3.00 1.50 2.00 .70 .30 .30 .30 .30 .3D .50 .50 .50 .50 .20 .30 .30 .30 .30 .30 .50 .30 .50 .50 .50 .50 .30 .50 .30 .30 .30 .30 .30 .30 .30 .30 .30 .30 .70 .30 .30 .50 .50 .70 .50 .30 .30 .70 .70 .30 S-MN 1,000 700 1,000 1,000 700 1,000 1,500 1,500 1,000 500 1,000 1,000 1,000 1,500 1,000 1,000 1,000 700 700 1,500 1,500 700 1,000 1,000 1,000 1,000 700 150 500 1,000 1,500 2,000 700 1,000 1,000 1,000 1,000 1,000 1,000 1,000 700 1,000 1,000 1,000 1,000 S-RG N N N N 1 N N N 2.0 .7 N N N N N N N N N N N N H N N N N 1.5 N N V N N N N N N N N V N N N N N S-RS S-RU S-l S-BA S-BE S-BI S-CD S-CO S-CP N N H N N N N N N N N N N N N N N N N N N N V N N N N N N N 30 30 1Q N 30 20 10 10 30 50 70 150 70 150 70 300 500 500 1 ,500 700 N <-\.o N <1.0 1.0 <1.0 10 200 <1.0 20 100 <1.0 20 150 <1.0 20 30 <1.0 70 <20 N 20 150 <1.0 20 100 <1.0 30 150 <1.0 30 100 <1.0 20 100 N 30 200 N 20 150 <1.0 50 200 <1.0 20 150 <1.0 20 500 <1.0 20 100 N 30 100 N 30 5,000 <1.0 20 300 <1.0 30 70 <1.0 20 150 <1.0 50 300 <1.0 20 20 <1.0 30 70 N 15 100 N 10 150 N 15 300 <1.0 30 700 <1.0 30 100 <1.0 30 150 N 70 15 2Dm 15 150 150 100 150 70 1.0 N N N N N N N 10 N N N N N N N N N N N N N N N N 15 5 30 20 15 30 20 20 15 10 30 50 20 20 20 15 50 15 10 30 70 15 30 30 20 30 10 <5 10 30 20 20 20 15 30 30 30 10 30 15 5 10 20 15 15 50 30 20 100 20 100 30 30 100 70 30 50 70 50 70 50 50 30 30 200 100 70 50 30 50 200 50 70 150 150 30 50 50 200 70 100 50 30 30 20 70 70 15 20 Table H. Semiquantitative spectrographic analyses of soil samples collected on the U.S. Virgin Islands.--Continued Sample S-CU S-LA S-MO S-NB S-NI S-PB S-SB S-SC S-SN S-SR S-V S-W S-Y S-ZN S-ZR S-TH 84SJ60US 84SJ5C5S 84SJ605S 84SJ507S 8USJ6H8S 8USJ609S 84SJ610S 8USJ611S 8USJ512S 8USJ613S 8USJ61US 8USJ615S 84SJ615S 8USJ617S 8<4?J618S 8USJ619S 8USJ62DS 8U5J621S 84SJ622S 84SJ623S 8USJ62US 8*4^ J625S 84SJ626S 84SJ627S 8U5J628S 8USJ629S 8USJ630S 84SJ631S 84SJ632S 84SJ533S 8USJ634S 8USJ635S 84SJ636S 84RJ637S 8USJ638S 84SJ639S 8USJ640S 8USJ6/41S 8USJ642S 8USJ644S 8<4SJ6<45S 8USJ6i4*S 8USJ647S 8USJ6HRS e'tFje^gs 150 30 100 100 150 150 150 100 150 100 1*0 100 100 100 100 150 150 150 100 150 mo 70 150 100 1*0 100 150 150 50 100 100 30 20 150 150 100 150 70 150 150 20 10 70 100 20 20 20 <20 20 <20 <20 <20 <20 20 <20 <20 <20 <20 <20 20 20 20 <20 20 <20 20 20 20 <2C N <20 <20 20 N <20 <20 20 N <20 <20 <20 <20 <20 <20 <20 20 <20 <20 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 30 10N ' N N N N N N N 15 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 20 10 10 30 7 30 20 15 70 50 30 20 15 15 20 50 30 30 30 20 50 30 30 20 20 15 20 10 15 50 20 5 30 20 70 30 50 15 20 10 7 30 15 15 10 <10 <10 10 < 10 <10 20 <10 15 10 70 <10 10 10 <1 0 10 150 20 <1 0 20 20 20 15 10 10 10 <10 20 300 10 <10 <10 15 <10 10 10 <10 10 15 10 15 <10 150 10 < 10 <10 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 30 20 30 30 30 20 20 20 10 7 30 30 20 30 30 30 30 20 20 30 50 30 30 30 50 30 30 15 15 30 30 7 30 30 30 30 30 15 20 30 10 20 20 30 20 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 150 <100 <100 150 N 200 300 300 500 2,000 200 200 200 150 150 150 300 300 500 200 300 500 500 200 150 200 200 N N 100 200 N 100 200 300 300 200 N 200 150 N 500 <100 200 <100 200 100 300 200 300 200 150 300 200 100 200 300 300 300 300 200 300 300 200 300 300 200 300 300 300 300 200 100 100 200 200 70 300 300 300 300 200 150 300 200 100 100 200 200 150 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 15 50 15 15 15 20 20 20 30 15 20 20 20 15 15 20 15 15 15 20 20 20 20 15 20 20 <1 0 20 20 20 20 20 15 20 15 15 20 20 20 20 20 20 30 30 20 N N N N N N N N <200 N N N N N <200 N N N N N N N N N N N N N <200 N N N N N N N N <200 N 200 N N N N N 20 150 20 30 15 70 30 50 50 30 50 30 30 20 20 50 50 100 50 50 100 70 100 20 20 30 20 50 50 30 100 100 30 50 30 30 50 100 30 100 100 100 100 150 100 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Table 4. Semiquantitative spectrographic analyses of soil samples collected on the U.S. Virgin Islands.--Continued Sanple 84SJ651S 84SJ651S 84SJ652S 8US-J653S 8HSJ654S 8<4^J655S 8<4SJ656S 8I4SJ657S 84SJ658S 8<4SJ659S 84SJ660S 84SJ661S 64SJ662S 8<4SJ663S 8I4SJ664S 84SJ665S 8I4SJ666S 84SJ667S 814SJ668S 8USJ669S P<4SJ67CS 84SJ671S 84SJ672S 84SJ673S 8<4SJ674S 84SJ675S 8'4SJ676S 84SJ677S 84SJ678S 84SJ679S 84SJ681S 84SJ682S 8<4SJ683S 8<4SJ684S 84SJ685S 84SJ686S 8<4SJ687S 8<^JS88S 8i»SJ6P.9S 84SJ690S 8<4SJ691S 84SJ692S 84F1J693S 8USJ694S 8<tSJ695S LATITUDE 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 21 30 21 30 21 2P 21 14 21 U 19 44 19 52 19 50 19 44 19 40 19 47 19 51 19 36 21 25 21 11 21 25 21 19 21 0 20 59 20 48 20 49 20 42 20 34 20 29 20 20 20 19 20 11 20 4 20 6 20 14 20 5 20 10 20 15 20 8 20 30 20 52 20 37 20 23 20 10 20 7 20 0 20 16 21 6 20 40 20 29 LON3ITUD S-FE55 64 64 64 64 64 64 64 64 64 64 f>4 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 41 41 42 42 42 46 46 47 46 46 46 4(S 46 42 43 43 43 44 44 45 44 44 44 44 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 42 42 40 40 2 22 50 55 48 47 51 37 37 28 30 46 8 27 55 13 35 1 21 15 11 2 51 45 39 38 29 4U r, 33 20 16 33 27 17 19 12 42 50 40 41 40 56 50 3.0 3.0 5.0 5.0 2.0 3.0 5.0 3.0 3.0 3.0 3.0 5.0 5.0 5.0 5.0 5.0 5.0 3.0 5.0 5.0 5.0 3.0 3.0 2.0 3.0 7.0 2.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 7.0 3.0 5.0 3.0 5.0 2.0 2.0 7.0 3.0 5.0 5.0 S-MG7, .70 .70 3.00 1.50 .70 1.50 1.50 .70 1.00 1.00 .70 1.00 1.50 1.50 1.00 1.00 1.50 1.00 1.50 3.00 1.50 2.00 2.00 .70 .50 .20 .10 .70 .50 .05 1.00 .70 .70 .70 1.00 .50 1.50 .70 .15 .50 .50 .20 1.00 .70 1.50 S-CA55 1.00 1.00 2.00 2.00 .50 2.00 2.00 1.50 2.00 1.50 3.00 3.00 1.50 1.50 2. CO 1.50 1.50 .15 1.50 1.00 .15 .70 1.50 .50 1.00 <.05 .07 .70 .70 <.05 .20 1.50 .50 .50 1.50 .20 2.00 1.50 . 15 1.00 .70 <.05 .70 1.00 1.50 s-n*. .30 .30 .50 .50 .30 .30 .30 .30 .30 .30 .20 .50 .30 .50 .30 .30 .50 .50 .70 .50 .30 .30 .30 .30 .30 1.00 .30 .30 .50 .20 .30 .30 .30 .50 .70 .30 .50 .50 .70 .20 .30 .70 .50 .5^ .70 S-MN 1,000 1,000 1,000 1 ,000 700 1,000 1,000 700 700 700 700 1,000 1,000 1,000 1,000 1,000 1,000 300 1,000 700 1,500 700 500 150 700 300 70 700 300 20 500 300 300 500 1,000 200 1 ,000 1,500 200 500 700 30 1,000 1,000 1,500 C «. B ^ N N N N N N N N N N N N N N N N N N N N N N N N 2.0 .5 <.5 N N N N N N .7 N N N N <.5 N .5 N N N N S-ftS S-RU S-B 30 20 N 10 20 50 20 30 20 30 30 30 50 10 70 20 15 30 15 10 10 15 20 N 30 15 20 20 30 10 20 20 20 30 N 30 20 20 30 5D 20 20 30 S-BA 100 150 50 150 100 70 100 50 70 20 20 100 30 150 30 1CO 200 100 70 70 100 70 20 70 S-BE S-BI S-CD S-CO S-CR 2,000 5,000 1 ,000 100 <20 O.O 0.0 0.0 0.0 0.0 0.0 0.0 O .0 O.G N O.O 0.0 N 0.0 0.0 0.0 O.O 0.0 O.O >5,000 O.O 0.0 0.0 0.0 0.0 O.O 700 O.O 200 <1.0 200 O.O >5,000 O.O 200 O.O <20 0.0 150 S 500 O.O 2,000 N 150 O.O 700 1 ,000 150 150 300 O.O N 0.0 O.O 0.0 N N N N N N N N N N 10 50 10 50 15 30 20 100 5 10 30 100 30 50 20 100 20 100 20 150 10 15 50 30 15 20 15 5 20 20 70 15 15 N 10 7 N 10 7 <5 5 <5 10 20 <5 10 15 <5 5 7 N 5 20 15 100 30 70 15 10 20 10 20 70 200 70 10 50 50 15 50 50 30 15 15 20 70 10 20 10 20 20 50 50 15 50 30 50 20 15 Table U. Semiyuantitative spectrographic analyses of soil samples collected on the U.S. Virgin Islands.--Continued Sample 8USJ650S 8USJ651S 8USJ652S 8USJ653S 8USJ65US 8'4SJ655S 8USJ656S 8USJ657S 84SJ659S 8USJ661S 8U3J662S 8USJ663S 8USJ66US 8USJ665S 8U3J666S 8USJ667S 8UTJ668S 8U5J669S 8USJ670S 8USJ671S 84SJ672S 8USJ673S 8USJ67US 8USJ675S 8USJ676S 8USJ677S 8USJ678S 8USJ679S 8USJ681S 8USJ682S 8USJ683S 8USJ685S 8USJ686S 8USJ687S 8USJ688S 8USJ689S 8USJ690S 8USJ691S 8USJ692S 8USJ693S 8USJ69US 8USJ695S -co 30 30 30 100 20 70 100 100 100 100 50 70 100 200 150 150 100 30 150 150 30 150 50 30 150 700 150 70 30 150 30 30 20 200 150 15 200 50 700 15 20 300 20 150 70 S-LA <20 <20 N <20 <20 20 <20 20 20 2 <20 20 20 <20 <20 N <20 <20 <20 <20 <20 <20 <20 <20 20 N <20 20 <20 N <20 <20 <20 N <20 <20 N <20 <20 20 <20 20 <20 <20 <20 S-MO N N N N N N N N N N N N N N N N N N N N N N N N N N 10 N N N H N N 20 N N N N 10 N N 100 N N N S-NP N N N N N H N N H N N N N N N H N N N N N N N N N N N N H ' N H H H N N N N N N N N N H JJ N S-N1 15 15 20 30 7 20 30 20 20 30 10 15 20 10 7 7 7 <5 30 100 30 10 20 5 7 7 <5 10 5 5 7 10 5 10 20 5 10 20 <5 5 7 5 10 15 10 S-PB 10 < 10 <10 <10 10 <10 <10 15 < 10 <10 N 20 <10 15 <10 <10 <10 < 1 0 < 1 0 < 1 0 <10 10 <10 N 500 100 70 70 20 <10 20 <10 N 100 10 N <10 20 100 <10 20 100 <10 10 10 S-SB N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N H N N N N N N N N N N N N S-SC 10 7 30 30 10 30 30 30 30 30 30 30 30 50 30 30 30 20 30 30 20 30 30 7 10 30 7 15 20 10 15 15 15 20 30 10 20 20 10 7 7 7 10 30 20 S-SN N N N N N N N N N N N N N H N N N H N N N N N N N N N N N N N N N N N N N N N N N N N N N S-SR S-V 150 150 150 200 N 200 200 200 200 150 <100 300 100 150 N 200 <100 N 150 <100 N N 150 <100 150 N N N N N N <100 N N <100 N 200 <100 N N N 200 N N 150 150 100 200 200 70 200 300 200 200 300 200 200 200 500 500 300 200 70 300 200 200 300 200 70 150 500 200 150 100 150 70 70 30 200 200 30 300 150 300 50 70 200 70 300 300 S-H N S-Y 20 20 20 20 20 10 15 15 15 15 10 20 10 20 15 20 20 20 20 15 30 20 20 10 20 15 15 30 20 10 30 15 20 20 30 20 20 20 N S-ZN S-ZR S-TH 15 20 20 30 N N N N N N N N N N N N N N N N <200 N <200 N <200 N N N 1,000 700 N 300 N N N N N 200 N N N N N N N N N N N 70 100 50 50 70 20 30 2 30 20 15 100 20 20 20 30 30 50 50 30 30 30 30 50 100 100 100 150 150 1CO 100 70 100 100 100 70 30 70 50 70 100 150 70 100 150 Table 4. Seniquantitative spectrographic analyses of soil samples collected on the U.S. Virgin Islands.--Continued Sample LATITUDE LONGITUD S-FF7. S-HG55 S-CA7. S-TIK S-KN S-AG S-AS S-AU S-f S-BA S-BE S-BI S-CD S-CO S-CN 8'4SJ696S 84SJ697S 84SJ698S 84SJ699S 84SJ700S R4SJ7G1S 84SJ702S 8USJ703S 84SJ704S 84SJ705S 84SJ706S 84SJ707S 84SJ7P8S 6USJ709S 84SJ709S 8USJ710S 8UGJ711S 84SJ712S 84SJ713S 84SJ714S 84SJ715S 84SJ7165 84SJ717S 84SJ718S 84SJ719S 84SJ720S 84SJ721S 84SJ722S 84SJ723S 84SJ724S 84SJ725S 84SJ726S 84SJ727S 84SJ728S 84SJ729S 8USJ730S 84S-J731S 84SJ732S 84SJ733S 84SJ734S 8USJ735S 84SJ736S 84SJ737S 84SJ738S 84SJ740S 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 20 14 19 56 19 42 19 20 19 6 19 8 20 2 19 51 19 41 19 25 19 21 19 33 20 5 19 55 19 25 19 36 19 23 19 34 19 34 19 43 19 15 20 33 20 47 20 47 20 37 20 12 19 56 19 13 20 42 20 42 20 40 19 52 19 59 20 13 20 34 20 36 20 28 20 31 20 40 20 58 22 14 20 50 19 5 21 31 21 38 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 42 42 42 42 42 42 43 44 44 44 44 44 43 42 42 44 43 43 43 43 43 44 44 44 44 44 44 44 45 45 45 45 45 45 45 45 45 45 45 45 44 44 44 44 44 43 26 3 3 23 57 57 8 15 17 30 45 1 46 29 5 52 29 29 15 14 45 45 45 32 24 30 25 15 15 35 5 35 41 33 40 15 24 25 27 55 35 0 0 7 3.0 3.0 5.0 3.0 3.0 2.0 3.0 5.0 3.0 5.0 3.0 3.0 3.0 2.0 2.0 5.0 2.0 2.0 2.0 3.0 3.0 3.0 2.0 1.5 2.0 3.0 3.0 .5 3.0 5.0 5.0 3.0 5.0 2.0 5.0 3.0 5.0 3.0 3.0 5.0 3.0 5.0 2.0 ^ .0 5.0 .70 2.00 1.50 1.00 .70 .70 1.50 1.50 1.50 1.50 .20 1.00 1.00 .70 .70 1.50 .30 .50 .50 .70 1.00 .70 .70 .70 .70 1.00 1.00 .15 1.50 3.00 1.50 .70 1.50 .70 3.00 2.00 3.00 3.00 1.50 1.50 .70 1.50 .15 3.00 3.00 .70 1.00 1.^0 .30 .50 .20 .70 3.00 1.00 1 .50 .07 1.50 .50 .07 .07 .70 . 15 .50 .70 .50 1.50 .70 .15 .20 .20 . 15 1.00 <.05 1.50 2.00 2.00 1.50 3.00 1.50 3.00 3.00 5.00 3.00 3.00 3.00 1.00 1.^0 .05 2.00 2.00 .70 .50 .50 .30 .30 .30 .30 .70 .30 .50 .30 .50 .20 .30 .30 .50 .20 .20 .20 .30 .30 .30 .30 .30 .30 .30 .30 .30 .30 .50 .30 .30 .30 .20 .30 .30 .30 .20 .30 .50 .3D .50 .30 .50 .30 1,000 1,000 1,000 1 ,000 700 1,000 1,000 1,500 1,000 1 ,000 70 1,000 200 200 200 1,500 1,500 1,000 1 ,000 1,000 1,000 1,000 700 300 1,000 1,000 700 <10 700 700 1 ,000 1,000 1,500 500 1,500 1,500 1,000 1,000 1,000 1 ,000 700 1,500 10 1,500 1,000 N N N N N N N N N N .7 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N <.5 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N V N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 30 10 15 15 50 20 15 20 50 30 20 20 15 30 30 20 20 20 20 20 15 20 30 20 50 20 20 15 N 10 10 20 20 30 <10 15 20 N 20 20 10 20 20 10 20 300 <1.0 200 <1.0 20 <1.0 150 <1.0 70 <1 . 0 150 1.0 150 <1.0 150 <1.0 150 <1.0 70 <1.0 500 <1.0 150 <1.0 150 <1.0 300 <1.0 300 <1.0 150 <1.0 150 <1.0 150 1.5 150 1.5 150 <1.0 100 <1.0 200 <1.0 150 <1.0 150 <1.0 150 <1.0 200 1.0 150 <1.0 300 <1.0 100 <1.0 150 <1.0 150 N 20 N 50 N 70 <1 . 0 50 N 50 <1.0 100 <1.0 150 N 200 <1.0 150 <1.0 500 1.0 200 <1.0 300 <1.0 200 <1.0 200 <1.0 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N V N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 10 20 30 10 20 5 10 70 20 15 N 15 7 <5 <5 10 5 7 <5 5 15 10 10 5 7 <5 10 N 15 20 30 20 50 5 30 20 50 30 20 30 10 20 N 30 30 50 20 200 20 50 10 30 200 150 70 20 30 20 10 10 20 15 20 10 10 50 15 <10 15 15 20 50 15 30 50 70 100 150 70 200 150 150 200 30 70 3C 100 15 150 150 Table U. Semiguantitative spectrographic analyses of soil samples collected on the U.S. Virgin Islands.--Continued Sample S-LA S-MO S-MB S-NI S-PB S-SB S-SC S-SN S-SR S-V S-W S-Y S-ZN S-ZR S-TH CJ1 8USJ696S 8USJ697S 8USJ698S 8<4SJ699S 8USJ700S 8USJ701S 8USJ702S 8USJ703S 8USJ7CUS 8USJ735S 8USJ706S 8USJ707S 8U5J708S 8USJ709S 8USJ709S 8USJ710S 8USJ71 1S 8USJ712S 8USJ713S 8USJ71US 8USJ715S 8USJ716S 8USJ717S 8USJ718S 8USJ719S 8USJ720S 84SJ721S 8USJ722S 8USJ723S 8USJ72US 814SJ725S 8USJ726S 8USJ727S 8USJ728S 8USJ729S 84SJ730S 8USJ731S 8USJ732S 8USJ733S 8USJ73US 8<4SJ735S 8HSJ736S 8U5J737S 8USJ738S 8USJ7U1S 300 150 30 30 50 15 30 1CO 50 70 300 70 50 5 5 70 5 20 7 20 100 50 10 20 30 30 30 300 100 100 70 100 100 30 100 150 150 100 70 150 70 100 150 150 150 <20 20 <20 20 <20 <20 <20 20 20 <20 <20 <20 <20 <20 <20 <20 20 20 20 <20 N 20 N <20 <20 <20 <20 <20 2C <20 <20 <20 <20 <20 N <20 <20 N <20 <20 <20 <20 20 N <20 N N H N N N N N H N N N N N N N N N N N N N N N N N N N Ns N N N N V N N N N N N N N N N N V N N N N N N N N N N N N H N N N N N N N N N N N V N N N N N N H N N N N N N N N N N N 15 7 100 15 20 7 15 100 50 30 <5 15 5 5 5 7 <5 5 <5 5 30 5 5 5 10 7 20 5 20 20 30 30 30 20 30 20 30 30 30 20 15 30 <5 50 30 50 10 10 20 15 N <10 <10 15 10 <10 10 <1 0 < 1 0 <10 <10 <10 < 1 0 < 1 0 <10 < 1 0 <10 < 10 <10 10 10 15 <10 <10 <10 30 < 10 15 N 15 <10 15 < 10 10 <10 15 10 15 <10 50 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 15 20 20 15 30 15 20 50 30 30 15 20 10 10 10 15 10 20 20 10 30 20 7 10 10 20 20 30 20 30 30 30 50 10 30 30 30 30 30 30 15 30 7 30 30 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 150 <100 H <100 N N 200 <100 150 N 200 N N N N N N N <100 150 200 N H N N 150 N 200 300 300 200 200 <100 200 200 150 150 300 200 200 200 N 200 <100 70 200 200 100 150 30 150 300 150 200 150 200 70 20 20 200 30 30 20 30 200 150 70 70 70 50 150 150 300 200 300 300 300 70 300 200 300 200 200 300 150 200 30 300 200 N N N N N N N N N N N N N N N N N N N N N N N N H H N N N N N N N N N N N N N N N N N N N 50 30 20 20 30 50 20 20 20 20 15 20 20 10 10 20 20 50 30 20 20 15 10 10 20 50 20 20 10 15 20 20 20 15 15 10 15 10 15 20 20 20 20 15 10 700 <200 N N N N N N N <200 N N N N N N N N N N N N N N N 200 N N N N N N N N N N N N N N N <200 N N N 150 100 50 50 100 150 50 30 50 50 70 150 70 100 100 50 70 150 150 70 30 30 50 50 100 150 50 50 30 50 50 30 30 70 30 20 20 20 70 30 100 100 100 30 30 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Table i*. Semiquantitative spectrographic analyses of soil samples collected on the U.S. Virgin Islands. Continued Sample LATITUDE LONGITUD S-FE7. S-HG% S-CA* S-TI5? S-MN S-AG S-AS S-AU S-B S-BA S-BE S-BI S-CD S-CO S-CF 8HSJ7141S 8USJ7U2S 8USJ7U3S 84? J7U US 8USJ7146S 8«?C001S 8URC002S 8HS3003S 84SCCOUS 8HSZ005S 8USC006S 8HSC007S 8HSC008S 8HSC009S 8US3010S 8HSC011S 8USC012S 8USC013S eusroms 8HSCD15S 8USC016S 8UST017S 8I4SC018S 8USC019S 8USC020S 8I4S3021S 8USC022S 8USC023S 8USC0214S 8HSC025S 8«S:026S 814S3028S 8HSC029S 8HSC029S 8USCC30S 8USC031S 8USC033S 8USC0314S 8USCD35S 8USC036S 8USC037S 8U5C038S eusrouos eusc^ms 8USCOU2S 18 21 18 21 18 21 18 21 18 21 17 U6 17 «46 17 U6 17 1*5 17 U5 17 U5 17 U5 17 1*5 17 U6 17 U6 17 U6 17 «46 17 46 17 146 17 (46 17 U6 17 U6 17 1*6 17 U5 17 U5 17 1*5 17 145 17 U5 17 Ul* 17 U5 17 l*U 17 1414 17 U5 17 14U 17 l*U 17 «4U 17 «45 17 U5 17 U5 17 U5 17 «4i* 17 1*5 17 U5 17 U5 17 1*6 13 21 22 12 7 1 17 8 5U 146 11 18 1 2 17 147 39 51 23 27 33 3U 39 39 UO 38 37 50 1*8 54 1 59 16 17 23 50 10 10 18 8 U7 36 U7 146 1U 61* 61* 6U 6U 6U 6U 6U 6U 6U 6U 6U 6U 6U 61* 6U 6U 6U 61* 6«4 61* 6U 61* 61* 6U 6U 6U 6U 6U 6U 6U 61* 6U 64 6U 6U 6U 61* 6U 6U 6U 61* 61* 6U 6U 6U UU (*l* Ul* 1*14 141* 1*9 1*8 «49 1*9 50 «49 149 149 145 145 145 146 1*6 147 147 1*7 U8 1*7 146 146 1*6 U7 1*7 148 «46 «48 U7 «47 1*8 149 148 1*8 51 50 50 50 50 52 52 52 15 15 8 22 38 21 37 7 1*1* 1 U7 39 19 1*9 UO «43 10 35 30 22 20 7 39 22 55 59 142 57 51* 7 55 37 16 26 0 35 37 13 <46 21* 5 21 20 23 28 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 7.0 5.0 7.0 3.0 5.0 5.0 3.0 5.0 5.0 5.0 5.0 3.0 3.0 3.0 3.0 3.0 3.0 5.0 10.0 3.0 3.0 3.0 5.0 5.0 5.0 5.0 5.0 3.0 7.0 3.0 3.0 * .0 3.0 3.0 3.0 1.00 .70 .30 1.00 1.00 1.50 1.00 1.00 1.00 1.50 2.00 1.50 3.00 1.50 1.50 1.00 .70 1.00 .70 1.50 1.00 1.50 .70 1.00 1.00 1.00 1.50 1.50 2.00 1.00 1.00 1.00 1.50 1.50 1.50 1.50 .70 1.00 1.50 .70 1.00 1.00 .70 .70 .70 1.50 .70 .70 1.00 1 .00 3.00 3.00 3.00 1.50 2.00 3.00 3.00 5.00 2.00 1.50 2.00 1.50 2.00 3.00 2.00 2.00 2.00 2.00 10.00 2.00 1.50 3.00 1.50 5.00 2.00 2.00 20.00 3.00 3.00 2.00 3.00 2.00 2.00 3.00 3.00 2.00 1.50 1.50 .70 1.00 .30 .30 .50 .30 .50 .50 .30 .30 .30 .30 .70 1.00 .70 .30 .50 .50 .50 .50 .70 .50 .50 .30 .50 .30 .30 .30 .50 .50 1.00 .30 .30 .20 .30 .30 .50 .50 .50 .30 .50 .30 .30 .50 .30 .30 .30 1,000 500 1,000 700 1,000 1,500 1,500 1,500 1,000 1,500 1,500 1,500 1,500 1,000 1,500 1,500 1,500 1,500 1,500 1,500 1,500 1,500 1,000 1,500 1,500 1,500 1,500 1,500 1,500 1,500 200 700 1,000 1,000 1,000 1,500 1,500 1,500 1,500 1,500 1,500 1,000 1,000 1,000 1,000 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N <.5 <.5 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 15 15 15 20 20 00 15 20 10 15 15 15 15 30 30 30 30 30 15 30 30 20 30 30 30 30 30 10 10 20 20 30 30 30 20 10 15 30 15 15 10 15 30 30 20 200 <1.C 150 <1.0 500 <1.0 150 <1.C 300 <1 . 0 300 N 100 <1.0 300 <1.0 200 N 300 N 500 <1.0 500 <1.0 300 <1.0 500 <1.0 500 <1.0 200 <1.0 300 <1.0 200 <1.0 300 <1.0 300 <1.0 500 <1.0 150 <1.0 500 <1.0 500 <1.0 300 <1.0 500 <1 . 0 300 <1.0 30 <1.0 500 N 300 <1.0 500 <1.0 300 <1.0 500 <1.0 500 <1.0 300 <1.0 300 <1.0 500 <1.0 500 <1.0 300 <1.0 300 1.5 500 < 1 . 0 ^00 1.0 700 <1 . 0 500 2.0 1,000 <1.0 N N N N K N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N K N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 10 7 10 7 10 20 15 15 15 20 20 30 70 20 20 20 15 15 15 20 20 20 15 15 15 20 20 70 70 15 15 10 20 20 15 20 30 15 30 15 15 15 20 30 15 70 3& 50 15 20 20 50 50 20 20 50 50 300 50 70 100 30 15 50 50 100 150 50 70 50 70 70 100 200 30 30 50 200 200 30 100 20 15 15 15 20 15 70 50 200 Table U. Seniquantitative spectrographic analyses of soil samples collected on the U.S. Virgin Islands.--Continued Sample S-CU S-LA S-MO S-NB S-NI S-PB S-SB S-SC S-SN S-SR S-V S-W S-Y S-ZN S-ZR S-TH 8USJ7U1S 8USJ742S 8HSJ743S 814SJ7HUS 8USJ7U6S 8USZ001S 8USC002S 8USC003S 84SCOOUF; 84S3005S 8U?::006S 8USCD07S euscooes 8USC009S 8USC010S 8HSC011S 84SC012S euscons 8us~oms 8USC015S 8USC01fiS 8USC017S 8USC018S 8USC019S 84SC020S 8USC021S 8US3022S 8^?C023S 8I4SC-02145 8USC025S 8USC025S 8USC028S 8USC029S 8USCT029S 8USC030S 8USC031S 8USC033S 8U5303US 8HSC035S eusroses 8USC037S PUSC038S 84SCOI40S etszou 1 s 84SCOU2S 50 20 30 20 30 70 100 100 70 100 150 150 200 70 100 70 70 70 50 50 100 100 30 70 70 50 100 150 150 70 70 50 100 100 150 150 100 50 70 50 70 70 100 150 70 <20 <2C 20 <20 <20 <20 <20 <20 20 <20 20 20 <20 <20 <20 20 20 20 <20 <20 20 20 20 <20 20 20 <20 <20 20 <20 <20 20 <20 <20 <20 <20 <20 <20 N 20 <20 20 20 20 20 - N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N K N N N N N N K N N N N N N ' N K N N N N K N N N N N N N N N 20 10 20 5 7 10 20 10 5 5 30 20 100 15 15 30 15 7 5 15 20 30 15 30 15 20 20 30 70 15 10 20 30 30 20 30 15 10 15 15 15 20 30 30 70 10 <10 10 10 <10 20 20 70 < 10 20 20 30 10 15 20 20 20 15 15 15 20 20 20 20 20 10 100 15 30 15 20 15 70 70 00 15 20 20 <10 15 00 15 15 30 150 N N N N N N N N N N N K N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 20 20 15 10 20 20 20 20 15 30 30 20 30 20 30 30 20 30 20 30 30 30 20 15 20 20 20 30 30 20 20 10 30 30 30 30 20 15 30 15 20 20 20 20 20 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 150 N K K 000 300 300 500 200 500 500 700 300 300 300 300 300 500 500 300 500 300 500 300 300 300 300 100 500 300 300 300 500 500 300 500 500 500 500 150 500 500 500 300 700 200 100 70 70 150 200 200 200 200 200 300 300 300 200 300 300 200 200 300 300 300 300 300 200 300 200 300 300 700 150 200 150 300 300 300 300 200 200 300 150 200 200 200 200 200 N N N N N N N K N N K K N N N K N N N N K N N N N K N N K N N N N N N N N N N N N N N K K 20 30 20 20 20 15 15 15 10 15 30 20 20 15 20 20 20 20 20 20 15 20 20 20 15 15 20 20 20 15 15 15 20 20 15 15 20 15 20 15 15 20 15 20 15 N N K N N N N N N N N N N N N N N N N N S N K N N N N N N N N N N N N s. N N N K N N N K N 50 50 150 70 100 30 30 30 10 30 30 30 30 30 30 30 30 70 50 50 50 50 50 30 30 50 30 300 500 200 200 150 200 200 300 300 200 150 3CO 150 150 200 200 200 150 N N N N N N N N N N N N N N N N N N N N N N K N N N N N N N N N N N N N N N N N N N N N N Table 4. Semiquantitatlve spectrographic analyses of soil samples collected on the U.S. Virgin Islands.--Continued Sanple LATITUDE LONGITUD S-FE% S-MG% S-CAT. S-11% S-MN S-AS S-AS S-AU S-B S-BA S-BE S-BI S-CD S-CO S-CR 84Sr043S 84SC044S 8(4S"0'45S 84SC:046S 84FC047S 84SC:0<48S 84s::o4 c)S 84SC050S 84SC051S 814SC052S 84SCOb3S 8USC05US 84SC055S 84SC056S 84S~057S 84SC058S 84SC059S 84SC060S eusroeis 84SC062S 84SC063S 84SC064S 84SC065S 84SC!066S 84SC067S 84FIC068S 84SCP69S 84SC070S 84s:o7is 84FC072S 84SC07(4S 8USC075S 84sc:o76s 84SC077S 84SC078S 84S"079S R4S"OBOS 84Sr*081S 84SC082S 84SC083S 84^coR4s 84S3085S 84SCO&6S 84SC087S 84SCO&8S 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 45 50 U5 2 44 28 44 49 44 53 t*5 0 t*5 3 t*5 0 t*3 47 t*3 50 1*3 53 44 21 44 24 44 29 44 5 44 26 44 32 44 21 44 7 44 3 43 26 42 43 42 55 42 51 43 4 43 4 43 6 43 55 45 34 46 6 45 17 44 54 44 46 44 37 44 29 44 19 44 10 44 3 43 59 44 21 44 46 45 14 44 52 44 17 43 37 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 53 53 53 52 52 52 51 51 52 51 51 51 51 51 51 51 50 50 50 49 52 52 51 51 51 50 49 49 45 45 46 46 46 47 47 46 47 47 46 45 46 45 45 45 45 4 28 2 36 6 8 42 43 38 59 51 41 38 40 24 12 53 19 2 38 0 0 38 4 12 40 58 21 50 24 r 9 26 52 18 46 38 2 28 1 54 3 16 14 17 17 3.0 3.0 3.0 5.0 5.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 5.0 5.0 5.0 5.0 5.0 3.0 5.0 5.0 5.0 3.0 3.0 3.0 5.0 3.0 3.0 5.0 2.0 3.0 3.0 3.0 3.0 3.0 5.0 3.0 2.0 5.0 2.0 1.5 3.0 3.0 3.0 2.0 2.0 .70 .70 .70 1.00 1.00 .70 .70 .70 .70 .70 1.00 .70 1.00 1.00 1.00 1.50 1.00 .70 1.00 1.00 1.00 .70 .70 .70 1.00 .70 .70 1.00 .70 1.00 .70 1.00 .70 .70 2.00 1.00 .70 1.00 .70 .70 .70 .70 .70 .70 .70 1 .00 .30 1.50 .70 .50 1.50 2.00 3.00 .70 1.00 3.00 3.PO 1.50 1.50 1.50 5.00 3.00 2.00 3.00 2.00 3.00 1.00 1.00 1.50 1.50 2.00 2.00 2.00 10.00 10.00 15.00 10.00 1.50 5.00 3.00 7.00 20.00 2.00 15.00 20.00 15.00 20.00 20.00 20.00 15.00 .30 .3? .30 .50 .30 .30 .30 .30 .30 .30 .30 .30 .30 .30 .30 .50 .50 .30 .50 .50 .30 .30 .30 .50 .50 .30 .30 .50 .15 .30 .2D .20 .30 .3D .70 .30 .15 1.00 .15 .07 .20 .15 .30 .20 .2r> 700 1,000 1,000 2,000 1,000 1,000 1,000 1,500 1,500 700 1,500 1,000 1,500 1,500 1,500 1,500 1,500 1,500 1,500 1,000 1,500 1,500 1,500 1 ,500 1,000 1,500 1,000 1,000 700 500 1,000 1 ,000 1,500 1,500 1,500 1,000 700 2,000 500 200 1 ,000 1,000 1,000 300 500 N N .5 .5 N <.5 N 1.0 N N N N N N N N N N .7 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 50 30 20 30 20 50 20 20 50 70 30 70 20 20 50 20 20 20 20 15 30 20 30 30 30 30 50 30 50 30 50 50 30 30 15 70 50 30 30 20 30 50 50 10 50 700 1,000 700 700 300 500 150 300 700 700 500 700 200 150 700 200 300 300 50C 500 500 500 500 500 500 300 300 300 300 300 300 200 500 700 700 200 200 1,000 300 100 200 200 200 200 150 1.0 1.0 <1.0 <1.0 <1.0 <1.0 <1.0 N <1.0 <1.0 N <1.0 <1.0 <1.0 <1.0 N <1.0 0.0 <1.0 <1.0 O.O <1.0 O.O O.O O.O 0.0 O.G 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.0 0.0 0.0 0.0 N 0.0 O.O 0.0 0.0 1.0 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 20 30 20 50 10 10 15 15 15 15 15 10 15 15 15 20 15 15 20 15 20 10 10 15 20 15 15 15 7 10 10 7 20 20 30 10 7 70 7 N 7 7 7 N 5 200 200 100 70 70 30 30 30 50 150 50 100 50 30 100 30 50 50 50 50 50 30 700 30 50 5C 30 30 50 70 70 70 500 50 100 70 70 70 70 50 30 3C 70 50 50 Table U. Semiquantitative spectrographic analyses of soil samples collected on the U.S. Virgin Islands.--Continued Sample S-CU S-LA S-MO S-NB S-NI S-PF S-SB S-S" S-SN S-SR S-V S-W S-Y S-ZN S-ZR S-TH 8US30U3S SUSZOHUS eusrouss succnufis 8USCOU7S 8USCOU8S 8US20U9S 8<*sr:o50S 8USC051S 8US3052S 8USC053S 8USC05US 8US~055S eusr:o56S 8USC057S 8US3058S 8USC059S 8USC060S 8US3061S 8USC062S 8US3063S sasroeus RUS::065S susir^fies 8USC067S 8US-068S 8U53069S 8US3070S 8US"071S 8U^r072S RUSC07US 8US3075S 8HSC076S 8USC077S RUS:078S 8USC079S eUSCOSDS 8US"08 1S 8HSC382S 8US3083S susrosus e 'i ^"oess 84S3086S 8USCOR7S 8USC088S 70 100 100 150 100 70 70 100 70 100 70 100 100 100 100 70 70 70 70 50 100 100 70 70 70 70 70 70 50 50 70 50 50 70 100 50 30 70 50 20 50 30 = 0 30 30 20 20 N <20 N <20 <20 <20 20 20 <20 <20 N N <20 N N N <20 <20 <20 20 <20 20 <20 20 <20 <20 20 20 20 20 20 20 20 20 <20 <20 20 <20 20 20 20 <20 20 S N N N N N N N N N N N N N N N N N N N N N N N N N N N NN ' N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 150 100 150 30 20 30 15 10 30 50 15 30 15 15 30 15 15 20 20 20 15 15 15 20 20 15 20 20 30 30 30 30 20 30 30 30 20 30 20 5 20 20 20 15 15 30 70 30 20 10 70 10 15 15 20 20 3,000 10 10 20 20 20 30 20 10 15 15 10 10 <10 50 30 15 100 10 30 30 20 20 20 30 20 20 30 <10 30 30 50 00 30 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 10 15 15 20 30 15 20 20 20 15 20 20 20 20 20 30 30 20 30 30 30 15 15 15 30 20 20 20 7 10 7 7 15 10 20 15 7 20 7 5 7 7 7 7 7 N N N N N N N N K N N 700 N N N N N N N N N N N N N N N N N N N N N N N S N N N N N N N N N 500 500 300 300 150 300 300 500 300 150 500 300 300 500 300 700 500 500 500 500 500 200 300 300 300 500 700 300 500 300 300 300 200 300 500 150 500 500 150 150 300 200 500 200 150 150 150 150 200 300 150 200 300 150 150 200 200 300 200 200 300 200 200 300 300 300 200 200 200 200 200 200 200 100 150 70 70 150 150 300 100 50 200 70 50 100 70 100 70 70 N N N K N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N K N N N N N N N N N 10 10 15 20 10 15 15 15 15 15 15 15 15 <1 0 15 20 15 15 20 20 15 20 15 20 20 15 15 20 15 15 20 20 15 20 20 20 15 20 10 00 15 15 15 10 15 S N N K K <200 N 500 N N N 700 N N N N N N N N N K N N N N N N S N N N N N N N <J N N N N N N N N 150 150 50 50 30 30 30 30 50 30 30 30 30 30 30 30 30 30 30 50 50 50 50 50 100 30 50 30 20 50 30 30 50 50 50 50 30 50 20 10 30 30 30 10 30 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Table U. Semiquantitative spectrographic analyses of soil samples collected on the U.S. Virgin Islands.--Continued Sample LATITUDF LONGITUD S-FE% S-MG% S-CA% s-m S-MN S-AG S-AS S-AU S-B S-BA S-BE S-BI S-CD S-CO S-CR 8USTOR9S 8USCP90S 8(4SC091S 8USCOP3S 814SC09US 8USC095S 8USC096S 8UST098S 8USC099S 8USC100S 8USC101S 8USC102S 8USC103S 8USC10US eu<;~io5S 8USC107S 8USC108S 6USC109S 8USC110S 8USC 11 IS 8USC117S 8USC113S 8USC11US 8USC115S 8USC116S 8USC117S 8USC118S 8USC119S 8USC120S 8(4S"121S &USC122S 8U5C123S 8 U ? C 1 7 '4 S 8USC125S 81SZ126S 8USC127S 8U5C128S 8USC129S 8USC130S 8US3131S 8US3132S 8USCM33S 8USC13US 8USC135S 8US3136S 17 (43 17 (42 17 H? 17 (43 17 (43 17 (43 17 U(4 17 (45 17 (45 17 U5 17 (45 17 U<4 17 I4<4 17 (4<4 17 (4(4 17 (4<4 17 (4U 17 (43 17 (43 17 U3 17 (43 17 (43 17 (42 17 (42 17 (42 17 U2 17 (42 17 U2 17 (42 17 (43 17 (43 17 (43 17 (43 17 (42 17 U3 17 (42 17 (43 17 (43 17 (42 17 (43 17 (42 17 (43 17 (43 17 (43 17 (42 23 35 5U 35 (41 50 5 9 15 13 5 52 15 2<4 8 <4 <4 <46 UO 22 1(4 8 30 «9 19 9 35 29 59 53 6 16 (40 57 55 9 5 17 (48 52 2 37 0 25 3U 27 6U 145 614 (47 6<4 <47 6(4 (47 614 (46 6(4 (46 6<4 <45 6<4 (4U 6(4 1414 6(4 (43 6(4 (4(4 6<4 143 6<4 143 6<4 <43 614 143 6U 14(4 614 14(4 614 14<4 614 (414 6<4 14(4 6<4 <45 6<4 14(4 614 142 614 <42 614 »43 614 143 6U (43 5U 143 6(4 1414 6(4 (43 614 U2 6<4 <43 6(4 <42 6(4 (46 6(4 146 6(4 (47 6(4 <48 6(4 (48 6<4 148 6U 148 64 (48 614 149 6(4 149 614 <48 614 (49 514 13 27 16 149 29 314 30 39 36 (4 32 15 39 55 37 18 33 27 51 18 1 (45 »47 10 23 (47 50 16 33 5(4 29 U3 52 27 17 8 20 3 51 UO 18 26 59 16 3.0 3.0 1 .5 3.0 3.0 3.0 3.0 3.0 2.0 3.0 3.0 3.0 3.0 2.0 3.0 1.5 3.0 2.0 3.0 2.0 1.5 2.0 3.0 3.0 3.0 3.0 3.0 1.5 1.5 3.0 3.0 3.0 5.0 1.5 3.0 5.0 3.0 3.0 3.0 3.0 3.0 3.0 5.0 7.0 3.0 1.00 .70 .70 .70 1.50 1.00 .70 1.00 .70 1.00 .70 .70 1.00 .70 1.00 .70 .70 .70 .70 .70 .70 .70 1.00 .70 1.00 .70 1.00 .70 2.00 .70 .70 1.00 1.00 .70 .70 1.00 1.00 .70 1.00 1.00 .70 1.00 .70 1.50 .70 20.00 15.00 20.00 10.00 15.00 10.00 20.00 15.00 >20.00 10.00 15.00 15.00 7.00 20.00 15.00 20.00 15.00 20.00 20.00 20.00 >20.00 20.00 3.00 1.00 20.00 15.00 10.00 >20.00 20.00 15.00 7.00 20.00 .70 20.00 20.00 3.00 10.00 2.00 15.00 7. CO 15.00 5.00 3.00 3.00 20.00 .30 .30 .10 .30 .30 .30 .15 .20 .15 .30 .20 .15 .30 .15 .30 .13 .20 .15 .15 . 15 .07 .10 .30 .30 .20 .30 .20 .10 .15 .20 .30 .20 .50 . 10 .20 .70 .20 .70 .30 .30 .30 .30 .30 .50 .30 1,000 1,000 300 1,000 1,000 1,000 700 1,000 300 1,000 700 700 1,000 500 1,000 5DO 1,000 1,000 500 300 200 300 1,000 1,000 700 1,000 1,000 150 500 1,000 1,000 1,000 700 500 1,000 2,000 1,000 1,000 1,000 1,500 1,000 1,500 1,500 1,500 700 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 20 50 70 3C 30 50 <10 70 10 50 50 50 30 20 30 10 20 20 30 10 15 20 50 50 70 30 70 20 30 30 50 50 50 30 70 50 30 15 20 30 30 30 30 20 50 150 <1.0 200 <1.0 150 <1.0 300 <1.0 500 <1 . 0 500 <1 . 0 200 <1.0 200 1.0 200 <1.0 300 <1.0 300 <1.0 200 <1.0 700 <1.0 200 <1.0 700 <1.0 150 <1.0 500 <1.0 200 <1.0 150 1.0 2CO <1.0 30 N 300 <1.0 700 <1.0 500 1.0 300 <1.0 300 <1.0 300 <1.0 100 <1.0 100 <1.0 500 <1 . 0 500 1.0 500 <1.0 3,000 1.0 30 <1.0 70 <1.0 700 <1.0 300 <1.0 500 <1.0 300 <1 . 0 300 <1.0 300 1.0 300 <1.0 300 N 500 (J 200 <1.0 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 7 10 5 10 20 10 10 10 5 10 10 10 20 7 10 7 10 7 10 7 N 5 10 10 7 10 10 N 7 7 10 10 20 N 7 20 10 10 10 15 10 10 10 20 5 50 50 70 70 100 70 70 70 70 70 70 70 70 70 100 70 100 70 70 7C 50 70 70 30 50 300 70 30 50 100 50 70 30 100 100 70 70 70 70 70 70 50 50 50 70 Table U. Semiquantitative spectrographic analyses of soil samples collected on the U.S. Virgin Islands.--Continue} Sample S-CU S-LA S-MO S-NR S-NI S-PB S-SB S-SC S-SN S-SR S-V S-W S-Y S-ZN S-ZR S-TH 8USC089S 84SC090S 84SC091S 8USC093S RUSC094S 8(45:3955 8US3096S 84SC098S 84SC099S ease-loos 8USC1C1S 84?" 1 02S 84SC103S 84SC104S 84SC105S 84SC107S 84SC108S 8USC109S 8k^~ 1 1 OS 84SC111S &US3112S 8USC113S 84SC11US 8<4SC115S pusrnes 84SC117S 84SC118S 84S31 19S 8UST120S 8USC121S 8UST122S 8USC123S 84SC12US 8USC125S 8<4S:126S 84SC127S 84SC178S 84SC129S 84SC130S 84SC131S 84SC132S 84ST133S 84S3134S 84SC135S 84SC136S 30 30 30 30 50 33 30 30 20 50 30 30 70 3D 50 20 30 20 30 20 30 30 53 50 30 30 50 20 20 30 50 50 50 30 30 70 50 50 50 50 50 50 50 70 30 <20 20 20 20 <20 20 <20 20 20 20 <20 20 20 <20 20 <20 20 <20 20 20 <20 20 20 20 <20 20 20 <20 <20 20 20 20 20 20 <20 <20 20 20 20 20 20 <20 N <20 20 N N N N N N N N N N N N N N N N N N N H N N N N N N N N NN r N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 15 20 20 30 50 20 15 20 10 50 20 15 30 20 30 15 30 15 30 15 7 10 20 20 20 20 20 10 15 20 30 20 30 30 20 50 20 15 20 20 30 30 15 20 20 100 30 30 30 30 30 50 20 <10 100 50 20 150 20 150 N 15 20 30 00 30 10 50 20 500 30 50 N 30 30 70 30 <10 150 70 15 50 20 100 30 20 50 30 100 30 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 7 10 7 10 15 10 7 10 7 10 10 7 15 7 15 7 10 5 7 7 <5 7 10 10 7 7 7 <5 5 7 10 10 20 <5 7 20 10 15 10 15 10 10 20 30 7 N N N N N N N N N N N N N N N N N N N N 10 15 N N N 00 N N < 10 N 15 N N N N N N N N N N N N N N 150 300 300 300 500 300 300 200 300 300 300 200 300 000 200 N 200 000 150 200 300 150 300 200 2,000 200 300 200 150 150 500 200 300 200 150 500 300 500 500 300 100 200 300 500 200 100 100 70 100 150 100 100 150 50 100 100 100 150 70 100 50 100 30 70 70 30 70 150 150 70 100 70 30 30 70 100 70 200 70 70 300 100 200 100 150 100 150 300 300 100 N N N N N M N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 15 15 10 20 15 20 <1 0 15 1C 15 15 10 20 <1 0 15 N 15 10 15 10 00 <1 0 15 20 10 10 15 <1 0 15 15 20 15 30 N 15 20 15 20 20 20 20 20 15 15 15 N N N N N N N N N N N N N N N N N N N }f N N 500 N <200 N N N N M N N N 1,000 N N N N N N N N N N N 20 30 30 30 30 30 20 30 20 30 20 20 300 20 30 15 30 20 30 30 50 30 50 50 30 30 30 20 20 30 50 20 150 20 30 50 30 150 50 30 30 50 30 50 30 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N >emiquant.itative spectroorapnic analyses of soil samples collected on the U.S. Virgin Islands.--continues Sample P1S3137S 81SC138S 81SZ110S 81SC111S 81S3112S 81SC113S 81SC118S 81SC150S 81SC151S 81S3156S 81SC201S 81SC202S 81SC203S 81FC201S 81SC205S 81SC206S 81SC207S 81SC208S 81SC209S 81SC210S 81SC212S 81SC213S 81SC211S 81SC215S 81SC216S 81SC21RS 81SC219S 81SC220S 81SC221S 81SC222S 81SC223S 81SC221S 81SC225S 81SC227S 81SC228S 81FC230S 81SC231S LRTITUPE 17 11 33 17 11 10 17 11 55 17 11 17 17 11 21 17 12 16 17 12 11 17 15 38 17 15 31 17 17 26 17 17 12 17 15 20 17 15 31 17 15 36 17 15 31 17 15 3P 17 15 18 17 15 13 17 11 IP 17 15 12 LONGITUD S-FE7. S-HG7. 815C233S 8USC23US 17 15 0 17 15 1 17 11 36 17 11 17 17 11 6 17 11 1 17 15 11 17 15 1 17 15 21 17 15 5 17 11 56 17 11 57 17 11 57 17 15 11 17 11 33 17 11 13 17 11 20 17 11 6 17 11 10 17 13 39 17 11 12 17 11 26 17 11 50 17 11 18 17 15 3 61 18 52 61 18 23 61 19 7 61 19 31 61 19 25 61 19 13 61 19 53 61 18 50 61 18 13 61 37 32 61 37 10 61 31 6 61 31 22 61 31 31 61 31 39 61 31 18 61 35 1 61 35 33 61 36 25 61 31 20 61 31 35 61 31 53 61 36 37 61 37 7 61 37 21 61 37 38 61 39 12 61 38 17 61 37 38 61 37 10 61 37 33 61 37 15 61 36 16 61 36 23 61 38 59 61 3P 39 61 36 5fi 61 36 39 61 38 0 61 38 13 61 39 3 61 39 33 61 38 53 61 38 51 61 39 3 3.0 3.0 5.0 3.0 5.0 3.0 3.0 10.0 7.0 3.0 3.0 3.0 3.0 3.0 3.0 .70 .70 1.00 .70 1.00 1.00 .70 3.00 2.00 7.00 5.0 3.0 3.0 3 .0 5.0 3.0 3.0 3.0 3.0 3.0 5.0 3.0 3.0 5.0 5.0 2.00 1.50 .70 1.00 1.50 .70 1 .00 1.50 1.00 1.50 2.00 1.50 1.50 1.50 1.50 3.0 .70 3.0 1.50 5.0 1.50 3.0 .70 3.0 1.50 1.50 .70 1.00 .50 1.00 3.0 1.00 5.0 1.50 5.0 1.00 3.0 1.50 5.0 1.00 3.C 1.50 3.0 1.50 3.0 1.00 3.0 1.00 3.0 1.00 15.00 10.00 15.00 15.00 5.00 15.00 00 00 00 1.00 7.00 .70 .20 .70 .50 .50 .70 1.50 1.00 .50 1.50 1.00 1 .50 5.00 3.00 1.50 1.50 .70 .50 .70 .70 .70 1.00 .70 1.00 70 00 ,00 ,00 ,30 ,70 ,50 ,00 1.00 S-TIX .30 .3" .30 .20 .30 .20 1.00 .50 .30 .30 .30 .30 .30 .50 .30 .30 .30 .50 .30 .50 .30 .30 .30 .30 .30 .30 .50 .30 .30 .30 .53 .50 .30 .30 .30 .50 .30 .30 .30 .30 .30 .30 .30 .30 S-MN S-RG S-AS 1,000 1,000 1,500 1,000 1,000 1,000 1,000 2,000 1,000 700 1,000 1,000 1,000 700 1,000 1,000 1,000 1,000 1,500 1,500 1,000 700 1,500 1,000 700 700 700 1,000 700 1,000 1 ,000 700 1,000 1,000 1,000 1,500 1 ,000 1,000 700 1,000 700 1,000 1,000 1,000 1,500 .7 N N N N N N N N N K N N N N N N .5 S S-AU N N K N N N N N N N N N N N N N K N N N N K K N N N V N N K K N N V K N N N K N N N V N N N N K N K N N N K K K N N N N N N N N N N N N N * N N N N N N N N N N N N N N N N N N N N S-B 70 70 70 70 50 100 50 N 20 100 70 50 70 200 50 50 50 100 50 50 50 70 50 70 70 70 50 50 70 30 70 70 70 70 70 70 100 5C 100 70 70 20 30 100 20 ?-PA S-PF S-BI 150 300 300 150 500 300 200 500 1 ,500 700 1,000 1,000 500 300 1 ,000 700 700 1 ,000 500 1,000 500 500 700 700 700 300 700 700 700 1,000 1,000 700 700 700 500 500 1 ,000 500 1,000 1,000 7CO 1,000 700 700 700 1.0 <1 . 0 1.0 0.0 0.0 <1 .0 O.G N <1 . 0 1.0 O.O 1.5 O.O <1 . 0 O.O O.O 1.0 <1 . 0 O.O 0.0 O.O 0.0 0.0 0.0 0.0 O.O O.O 0.0 <1 .0 0.0 0.0 O.O 0.0 O.O 1.0 O.O O.O 0.0 0.0 O.O 0.0 O.O 0.0 O.O 0.0 N N n N N N N V N N N N N K N N K N N N N N N V N N N N N K N K N N N N V N N N N N N N N S-C;D N N N N N N N N N N N N K N N N K N N K N N N N N N N N N N N N N V N N N N N N N N N N N ?-CO 5 10 10 7 10 7 10 70 50 10 20 30 20 10 20 10 10 10 15 15 15 10 15 20 15 7 15 20 10 15 10 10 15 10 10 10 20 15 20 20 15 20 15 15 20 S-CP 50 50 70 -jr. 5r 50 30 150 70 70 1*0 150 150 iro 200 1CO 100 150 150 150 200 70 100 150 100 30 200 200 no 150 100 150 200 150 50 7" 1*0 20 150 200 150 500 70 70 150 Tablp Semiquantitative spectrographic analyses of soil samples collected on the U.S. Virgin Islands. --Continued Cample S-CU S-LA S-MO S-NB S-NI S-PB S-SB S-SC S-SN S-SR S-V S-H S-Y S-ZN S-ZR 5-TH CD CO 84^31375 BUS" 13RS 84S3139S 84SC140S 84F3141S 84S3142S 8453143S 845C148S 84S315GS 84S3154S 84S3156S 84SC2COS 84S32015 B4SC202S 84S32C3S 84532045 84SC205S 84S3206S 84S3207S 845C208S 84S32H9S 84S3210S 84S3212S 845C21 3S 84332145 B4S3215S 8 'J S3 21 <5S 84SC21BS 84532195 84SC220S 845C221S 84SC222S 84SC223S 84S3224S 84S3225S 84S3226S B4SC227S 84SC228S 84SC229S 84S3230S 84S3231S 84S3232S 84SC233S 84S3234S B4S3235S 50 50 50 50 50 30 50 200 70 50 100 100 100 70 150 70 100 100 100 100 100 100 100 100 100 70 100 100 70 100 100 50 100 100 70 100 100 100 10Q 150 70 100 100 100 100 20 20 20 20 <20 20 20 N <20 20 20 20 <2P 20 20 20 20 <20 20 20 <20 20 20 <20 <20 20 20 <20 20 20 20 <20 20 20 20 <20 <20 20 20 20 20 20 20 <20 <20 N N N N N N N N N N N N N N N N N N N N N N N N N N N N NN ' N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N ' N N N N N N N N N N N N N N N N 10 15 30 15 15 15 20 30 30 50 50 100 150 100 150 100 100 100 100 100 70 50 50 70 50 15 150 50 70 150 100 1CO 150 70 30 30 70 5 70 70 50 150 70 70 150 300 30 100 50 30 50 30 10 10 20 20 15 15 N 15 15 10 15 15 15 10 15 10 15 20 00 15 15 15 15 15 15 10 20 20 15 10 15 15 30 15 <1 0 15 20 10 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 5 7 10 7 20 7 10 30 20 7 20 15 15 15 15 10 10 20 15 15 30 15 15 20 20 20 15 20 15 15 15 10 15 15 15 15 20 20 20 15 15 10 15 10 15 20 10 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 200 200 2CO 200 500 500 300 500 500 200 300 300 200 300 300 300 200 500 200 500 300 300 300 300 300 300 300 300 300 500 500 200 200 200 300 150 300 500 300 200 200 300 300 300 300 50 70 150 100 200 100 150 700 300 150 200 200 200 150 200 150 150 200 150 200 200 200 200 300 200 200 150 200 200 150 150 150 200 200 150 200 300 300 200 200 150 100 150 150 150 N N N N N N N N N N H N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 10 15 20 15 15 15 15 20 15 15 20 20 20 15 20 15 20 20 20 15 20 20 20 20 20 15 20 20 20 20 15 15 20 20 20 20 20 15 20 20 20 20 20 20 15 N N N N N N N N N N N N N <200 N N N N <200 N N N N N N N N N N N N N N <200 N N N N N N N N N N N 30 30 50 30 30 30 30 50 70 30 30 50 50 30 50 30 50 50 50 30 50 50 50 50 30 30 50 70 70 50 50 50 50 50 50 30 50 20 30 50 50 70 50 50 50 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N V N N N N N N Table 4. Semiquantitative spectrographic analyses of soil samples collected on the U.S. Virgin Islands. Continued Sanple LATITUDE LONGITUD S-FE% S-MG% S-CA% S-TIf. S-MN S-AG S-AS S-AU S-B S-BA S-BE S-BI S-CD S-CO S-CR CO 84SC236S 84SC239S 84SC24HS 84SC240S 84SC241S 84SC242S 84SC243S 8UFC2UUS 84ST245S 84SC246S 8USr247S 8U?:C24fiS P'lSC240S P<4S"250S 8t4?"251S 84SC252S 84S"253S 84SC254S 8UFT255S 84SC256S 84SC257S 84SC25BS 84SC250S 84SC260S 8US^261S 84S^262S 8U3C263S 8USC:264S 84SC264S 84SC267S 84SC268S 84S"269S 84SC270S 84SC271S 84SC272S 84S::274S 84SC275S 84SC276S 84SC277S 84SC278S 84SC279S 84SC280S 84SC281S 84SC282S 8USr283S 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 45 43 44 aa 43 43 43 43 43 44 44 44 45 44 44 44 44 44 44 43 43 43 42 46 46 46 46 46 46 41 41 41 41 41 42 41 42 42 41 42 42 42 41 41 42 6 59 5 5 10 13 22 8 46 37 30 34 31 47 26 28 43 27 17 54 25 30 38 58 24 34 9 16 13 19 29 30 33 38 6 33 8 0 52 13 30 35 34 53 30 64 40 64 41 64 41 64 41 64 41 64 40 64 41 64 41 64 40 64 40 64 40 64 40 64 40 64 41 64 41 64 41 64 42 64 42 64 42 64 42 64 42 64 42 64 42 64 45 64 45 64 45 6444 64 44 64 44 64 52 64 52 64 51 64 50 64 51 64 50 64 50 64 51 64 52 64 52 64 51 64 51 64 50 64 49 64 49 64 49 4 30 17 19 27 42 42 14 10 29 53 47 19 22 39 47 2 4 37 19 4 13 14 0 1 4 59 25 22 49 c, 14 47 53 22 37 25 5 20 43 46 9 40 27 47 47 3.0 3.0 3.0 3.0 3.0 3.0 5.0 5.0 3.0 3.0 5.0 3.0 5.0 3.0 5.0 5.0 3.0 5.0 5.0 5.0 3.0 5.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 5.0 5.0 3.0 3.0 5.0 3.0 3.0 3.0 3.0 3.0 2.0 3.0 5.0 3.0 2.00 .70 1.00 1.00 1.00 1.00 .70 1.00 1.00 1.00 .70 1.00 2.00 .50 1.00 1 .00 .70 .70 .70 1.00 .70 .70 .50 1.00 .70 1.00 1.00 1.00 1.00 .70 .70 .70 .70 .70 .70 1.50 1.50 .70 .70 .70 .70 1.00 1.00 1.00 .70 1.50 1.50 1.00 1.00 1.00 1.00 .70 1.CO 1.50 1.50 1.50 1.00 1.50 2. CO 1.50 2.00 1.50 1.50 1.50 1.50 .70 .70 .50 2.00 7.00 1.50 5.00 1.00 1.00 3.00 10.00 1.50 1.00 10.00 5.00 5.00 1.50 7.00 7.00 10.00 5.00 20.00 20.00 7.00 7.00 .30 .50 .30 .30 .30 .30 .50 .30 .30 .50 .70 .30 .30 .50 .50 .50 .50 .50 .50 .30 .30 .70 .30 .30 .20 .30 .30 .50 .50 .50 .30 .50 .30 .20 .30 .50 .30 .30 .30 .30 .30 .20 .30 .50 .30 1,000 1,000 1,500 1,500 1,000 1,000 300 2,000 1,000 1 ,500 1,500 1,000 1,000 700 1,000 1,500 700 1,500 1,000 2,000 1,000 1,000 700 2,000 700 1,500 1,000 2,000 2,000 1,500 1,000 1,500 2,000 1,000 1,000 1,000 1,000 700 1,000 1,000 1,000 500 1,000 1,500 1,500 N M N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 10 30 50 50 30 50 50 70 20 20 30 30 15 20 30 50 30 50 30 70 50 30 50 100 50 70 70 30 30 100 70 100 70 30 70 100 50 70 70 70 70 10 70 50 50 700 700 700 700 700 700 1,000 700 1,000 1 ,000 1,500 1,000 1,000 1,000 1,000 700 1,000 1,000 700 1,500 700 200 500 200 300 300 300 300 300 150 150 200 500 300 300 500 700 150 150 200 500 150 150 500 200 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 1.0 1.0 1.0 <1.0 <1.0 <1.0 <1.0 1.0 1.0 1.0 1.0 1.0 1.5 1.5 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 3.C 2.0 2.0 0.0 <1.0 <1.0 <1.0 <1.0 1.5 2.C <1.0 1.0 <1.0 <1.0 N <1.0 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 20 15 15 15 10 10 <5 20 15 20 20 20 50 1C 30 20 10 15 10 20 7 10 10 10 10 15 15 30 30 20 10 20 30 15 10 10 10 7 10 10 10 <5 5 15 10 500 30 70 70 100 100 50 50 150 200 50 200 700 20 50 30 20 50 30 100 30 30 30 10 50 30 50 50 50 70 50 100 30 50 30 50 50 50 100 50 100 10 20 20 50 Table M. Semiguantitat ive spectrographic analyses of soil samples collected on the U.S. Virgin Islands.--Continued Sa tiple S-CU S-LA S-MO S-NB S-NI S-PB S-SB S-SC S-SN S-SR S-V S-W S-Y S-ZN S-ZR C-TH 8USC236S 8'IS"239S 8USC2HOS 8USC200S 8USC2I41S 8U?C"2U2S 814S32U3S 8USr2UUS 8US"2U5S 8USC2U6S 8HSC2147S 8USC2U8S 8USC2U9S 8USC250S 8^2515 8^C252S 8HSC2S3S 814SC25US 814SC255S 8»S-256S 814SC257S RUS3258S 8*45:72595 8145C260S 8USC261S 8US:262S 8USC263S 8USC26US 8USC26US 8USC267S 8USC268S 8USC269S 8USC270S 8USC271S 814SC272S 8USC27US 8UF-275S 8USC276S 8U3C277S 8USC278S 8USC279S 8USC280S 8USC:281S 8USC282S 8USC283S 70 70 100 100 50 50 100 150 100 150 100 70 150 70 100 100 70 100 100 100 50 70 50 70 70 50 70 70 70 50 50 50 50 30 50 50 50 50 30 50 50 20 50 100 50 20 20 20 20 20 20 <20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 <20 20 20 <20 <20 <20 <20 <20 30 20 20 20 20 <20 <20 20 20 20 20 20 20 20 <20 20 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 200 7 70 70 30 30 15 50 150 150 30 200 300 15 30 20 15 15 10 70 15 20 30 7 15 10 20 15 15 30 20 30 20 15 15 20 15 20 20 20 20 <5 7 15 20 20 15 20 20 10 10 10 15 15 20 20 20 50 20 15 15 70 15 30 20 10 00 10 15 10 00 15 10 10 20 15 20 15 20 20 15 10 20 20 20 15 N 30 30 20 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 15 15 10 10 15 15 20 20 10 10 20 10 15 30 30 20 20 30 30 20 15 20 15 20 10 20 20 20 20 20 10 15 20 7 20 20 15 15 20 15 20 5 7 20 10 N N N N N N N N N N N N 20 N N N N N N N N N N N N « N N N N N N N N N N N N N N N N N N N 300 300 300 300 300 300 300 200 300 300 500 300 200 500 300 300 300 300 300 200 300 300 300 200 300 200 300 300 300 N N <100 300 200 300 300 300 N N <100 300 300 150 500 150 150 200 100 100 150 150 200 200 150 150 200 150 200 200 300 200 200 300 300 200 150 150 15C 200 150 150 200 200 200 150 70 150 200 100 200 300 150 100 100 100 150 50 70 200 200 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 20 20 15 15 10 15 10 20 15 20 20 20 20 20 20 20 20 ?0 20 30 20 20 20 20 15 20 15 20 20 20 15 20 20 15 20 20 20 15 20 15 15 10 10 15 20 N N N N N N N <200 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 30 70 30 30 70 70 150 100 150 150 200 150 50 150 150 150 150 150 150 150 100 100 100 50 50 50 30 50 50 100 30 150 30 50 70 70 30 30 30 30 0 15 100 50 30 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Table 4. Semiquantltatlve spectrographic analyses of soil samples collected on the U.S. Virgin Islands. Continued Sample LATITUDE LONGITUD S-FEX S-MG% S-CA7. S-TT'S S-HN S-AG S-AS S-AU S-B S-BA S-BE S-BI S-CD S-CO S-CR 8USS28US 84SC285S 8USC286S 8USC287S 84SC2P8S 84SC:?89S 8US32 Q TS 8UFC291S 8UFC293S 8US379US 8UFC295S 8'*Sr!297S 84SC298S 84SC299S 84SC300S 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 42 45 U4 43 U3 43 43 U3 U4 44 44 4U 4U 45 U5 38 23 24 12 26 38 U1 49 26 39 32 8 10 45 U2 64 64 6U 6U 64 64 6U 64 64 64 64 64 64 64 64 50 41 UO 41 41 41 41 41 41 41 41 41 41 51 50 13 35 1 3 UO UU U2 36 30 31 U6 47 40 52 2 41 5.0 5.0 5.0 3.0 3.0 5.0 5.0 3.0 5.0 5.0 5.0 3.0 3.0 5.0 5.0 1.00 .70 1.00 .70 1.00 1 .00 1.00 1.00 .70 1.00 1.00 1.00 .70 1.00 1.50 5.00 .20 1.50 .20 .50 .70 1.00 1.50 1.50 2.00 2.00 1.00 .50 2.00 3.00 .30 .50 .50 .30 .50 .50 .70 .30 .50 .70 .70 .50 .30 .30 .30 1,500 200 1 ,500 700 1,000 2,000 2,000 1,500 1 ,500 1,500 1,500 1,500 1,500 1,000 1,500 N N N N N N N N N N N N < .5 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 70 50 30 70 70 70 30 70 20 20 20 100 70 20 15 1 1 1 1 1 1 1 1 1 1 500 ,500 ,000 ,500 700 700 ,000 ,000 ,OPO ,000 ,000 ,000 ,000 300 500 <1.0 <1.0 2.0 1.0 1.5 1.* <1.0 1.5 <1.0 <1.0 1.5 1.5 2.0 N <1.0 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 20 10 30 10 10 15 30 15 15 20 15 15 15 15 20 30 500 150 30 50 50 50 50 20 20 20 150 70 30 30 CO Table 4. Semiquantitative spectrographic analyses of soil samples collected on the U.£. Virgin Islands.--Continued Sample S-CU S-LA S-MO S-NB S-N1 S-PB S-SB S-SC S-SN S-SP S-V S-W S-Y S-ZN S-ZR S-TH 8(JS32PUS 8USC2&5S 8USC28fiS 8USC287S 8i*?:28flS 8USC289S 8US3290S 8»4?:291S 8USC293S 8USC"2914S 8USC295S 84S:297S 8US3298S 8USC299S 84S3300S 70 100 150 3D 70 1^0 100 70 100 100 100 70 100 100 100 <20 20 20 20 20 20 20 20 20 20 20 20 20 <20 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 20 150 150 15 2C 30 30 70 15 10 10 50 70 15 20 20 15 20 20 15 20 15 15 20 20 15 15 10 10 10 N N N N N N N N N N N N N N N 20 20 15 15 20 20 20 15 20 20 20 15 15 20 20 N N N N N N N N N N N N N N N 500 <100 300 300 200 200 300 300 500 500 500 300 100 500 300 300 200 200 100 150 200 200 150 200 300 300 150 100 300 300 N N N N N N N N «J N N N N N N 20 15 20 20 30 30 20 20 20 20 20 20 30 15 15 N N <200 N N N N N N N N N N N N 30 100 70 100 100 100 100 50 100 150 150 100 30 50 30 N N N N N V N N N N N N N N N CO Table 5. Semiquantitative spectrographic analyses of stream-sediment samples collected on the U.S. Virgin Islands> [K, not letected; <, detected but below the limit of determination shown; >, determined to be greater than the value shown.] i' a m p 1 e Latitude Longitude Fe-pct. Kg-pct. Ca-pct. Ti-pct, Mn-ppm Ag-ppm s s As-ppm Au-ppn s s B-ppm Ba-ppm Be-ppm s s CO CO 83F:T001 83ST002 8351003 83ST016 83ST026 83ST028 83ST032 83ST033 83ST034 83ST035 83ST036 83ST037 83ST038 83ST039 83ST040 83ST041 83ST042 83ST043 83ST047 83ST048 83ST050 83ST051 83ST054 83SI055 83ST056 83ST057 83ST058 P3?T059 83ST360 83ST061 83ST065 83ST067 83ST068 83SI069 83ST070 8331071 83ST072 83ST073 83SID74 83ST075 83ST076 83ST077 83ST078 R3ST079 83ST080 18 20 46 18 20 48 18 20 23 18 19 47 18 21 22 18 23 34 18 77 37 18 22 1 18 21 34 18 21 49 18 22 28 18 22 12 18 23 0 18 23 14 18 23 41 18 24 5 18 22 24 18 22 21 18 16 44 18 18 39 18 19 38 18 19 37 18 19 55 18 21 0 18 20 54 18 21 16 18 20 40 18 20 23 18 21 42 18 21 43 18 21 46 18 19 41 18 19 59 18 19 36 18 19 40 18 19 42 18 19 19 18 19 27 18 20 5 18 19 44 18 19 34 18 19 12 18 19 11 18 19 30 18 20 13 64 53 64 52 64 51 64 56 64 53 64 54 64 55 64 55 64 55 64 56 64 56 64 58 64 58 64 58 64 5fi 64 58 64 58 64 59 64 53 64 53 64 55 64 56 64 58 64 59 65 1 65 2 65 4 65 5 65 2 65 3 64 59 64 51 64 51 64 51 64 52 64 52 54 53 64 53 64 53 64 53 64 54 64 54 64 53 64 5U 64 54 14 44 58 42 21 32 41 15 39 14 57 5 8 21 8 30 32 0 46 4 18 58 21 10 54 6 476 ' 49 f - 9 37 14 14 40 23 25 29 28 3 0 35 42 59 16 30 5.0 5.0 5.0 5.0 3.0 5.0 5.0 5.0 2.0 5.0 5.0 5.0 3.0 5.0 5.0 5.0 7.0 5.0 5.0 3.0 5.0 .7 1.0 5.0 3.0 5.0 3.0 3.0 5.0 3.0 5.C 3.0 3.0 1.0 2.0 2.0 3.0 2.0 5.0 2.0 3.0 2.0 3.0 3.0 5.0 1.00 1.50 2.00 .70 1.50 1.50 .70 1.50 1.00 1.00 2.00 .70 1.50 2.00 1.50 1.50 1.50 1.50 1.50 2.00 1.50 .20 .15 1.50 .70 1.00 1.50 .50 1.00 1.00 1.00 .30 .30 .30 .50 .50 1.00 .70 1.50 .30 1.50 1.00 1.00 .50 1 .00 3.00 3.00 3.00 1.50 2.00 2.00 .20 5.00 20.00 2.00 2.00 1.50 7.00 3.00 2.00 2.00 .70 2.00 1.50 .70 3.00 .15 .07 3.00 2.00 2.00 3.00 .70 1.50 1.50 1.50 .20 .30 .20 .30 .50 .70 .50 3.00 .20 1.50 .70 1.00 .70 1.50 .50 .50 .50 .50 .50 .50 .50 .50 .20 .50 .30 .50 .20 .50 .70 .70 .50 .50 .50 .50 .50 .20 .20 .50 .30 .30 .30 .30 .50 .20 .50 .30 .30 .20 .30 .30 .30 .20 .50 .20 .30 .30 .30 .50 .50 1 ,000 1,000 1 ,500 1 ,000 1,000 1 ,000 1,000 1,500 500 1,000 1 ,000 1,000 1,000 1,000 1 ,500 1 ,000 2,000 1,500 1 ,000 1 ,500 1,000 700 50 1,000 1,000 1,000 1,000 1,000 1,000 5,000 1,000 1,500 1,000 700 1,000 1 ,000 1,000 1,000 1 ,000 500 1,000 500 1 ,000 2,000 1 ,000 N N N N N N N N N N N <. 5 N N N N N N N N N N .5 N N N 3.0 N N N N <.5 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N * N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N V N N N 15 15 10 15 10 10 50 20 20 10 15 10 20 10 10 20 N 15 20 10 20 20 10 20 20 20 15 20 20 20 20 30 30 30 30 20 10 10 10 20 10 15 15 10 15 200 200 150 100 300 200 500 300 150 500 150 200 150 2DO 300 200 300 500 150 50 100 70 500 100 100 200 150 150 300 500 200 150 100 70 150 300 70 70 150 100 100 70 100 500 200 N <1 N N <1 <-, < 1 <1 N N N < 1 N N <1 N N N < 1 <1 N < 1 < 1 N N N N < 1 < 1 1 N < 1 <1 < 1 <1 <1 N < 1 N <1 <1 N N N N Table 5. Serniquantitative spectrographic analyses of stream-sediment samples collected on the U.S. Virgin Tslanrts>--Con tinued S a 7i pi p 83SI001 Bi-ppm Cd-ppm Co-pprn ESS CO 83ST003 83SI016 83ST026 83SI028 83?T032 83ST033 83SI03U 83ST035 83ST037 83SI03S 83ST039 83510141 83STOI)2 83SIOi)3 83SICU7 83ST055 83SI056 83ST057 83ST058 8331059 83SI060 83ST061 83SI065 83SI067 83ST068 83ST069 83ST070 83ST071 83SI072 83ST073 8351^75 P3SI076 83ST077 83SI"}78 83SI079 83FT080 N N N N 10 N N N N N V K 15 15 20 10 30 30 20 20 10 20 30 10 15 10 15 20 50 30 20 20 20 <5 N 20 15 20 15 10 10 SO 20 10 10 5 10 7 10 10 20 5 10 7 10 10 10 Cr-ppm s 70 100 50 15 30 50 30 50 20 15 70 <10 20 300 <10 15 <10 30 100 100 50 15 10 20 10 15 20 20 10 10 10 20 150 10 20 20 30 30 30 20 20 70 50 200 20 Cu-ppm s 70 70 100 50 70 100 70 100 50 100 150 100 50 100 150 150 150 100 70 500 70 10 50 100 100 150 70 50 100 50 150 30 30 20 30 30 70 50 100 15 100 30 70 50 70 La-ppm s N <2C <20 N <20 <20 20 N <2D N N <20 N N <20 N N N N N N <20 <20 N N N <20 <20 <20 <20 N <20 <20 <20 <20 <20 <20 <20 N N N N N N N Mo-ppm s N N N N N N N N N N N N N N N N N N N N N N N S N N N N N N N N N N N N N N N N N N N N N Nb-ppm s N N N N N N N N N N N N N »I N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Ni-ppra s 10 20 20 10 20 15 10 15 <5 10 30 7 10 70 7 10 <5 15 50 50 20 5 <5 15 10 10 10 10 <5 <5 10 1C 10 7 10 10 20 15 15 15 15 15 20 15 10 Pb-ppm s 30 70 15 15 30 20 30 100 30 20 15 20 10 20 15 10 10 15 20 00 300 20 70 50 15 10 10 10 20 30 10 30 15 10 30 30 20 15 50 <10 10 <10 30 20 70 Sb-ppm s N N N N N N N V N N N N N N N N N N N N N N N N N N N N N !J N N N N N N V N N N N N N N N Sc-ppm s 20 20 30 20 20 30 30 30 20 30 30 20 30 30 30 20 30 30 20 20 30 7 10 30 30 30 30 30 20 15 30 20 20 10 15 15 20 15 30 15 20 15 20 10 20 Sn-ppm s 15 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N S N N N N N Sr-rpm s 500 500 300 200 300 500 150 300 3,000 300 300 300 300 300 200 300 <100 500 150 100 300 N N 500 200 300 500 200 300 200 300 100 100 <100 150 150 100 <100 500 N 200 20 150 200 200 Table 5. Semiquantitative spectrographic analyses of stream-sediment samples collected on the U.S. Virgin Islands>--Continued COo S a .11 p 1 e 83ST001 83SI002 83srocn P3ST016 83ST026 83ST028 83ST032 83ST033 83510314 83ST035 83SI036 83SI037 83SI038 83ST039 83SIOUO 83510141 83510142 83STOU3 83SrOU7 83510148 83ST050 83ST051 83510514 83SI055 83ST056 83STOS7 8351058 8351059 83SI060 83SI061 83ST065 83ST067 8351068 83ST069 83SI070 83SI071 83SI072 83ST073 83STD7U 83ST075 8351076 83SI077 83ST078 83ST079 83ST080 V-ppm s 200 300 300 300 200 300 200 200 150 200 300 300 150 200 300 500 300 300 200 150 200 30 20 200 300 300 200 150 100 100 300 100 100 70 100 100 150 100 200 70 200 100 150 150 200 W-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Y-ppm s 20 20 20 20 15 20 20 20 20 20 15 20 10 20 30 20 20 20 30 15 20 20 15 20 15 20 15 20 30 20 ' 20 30 20 20 20 20 20 20 15 20 20 20 15 15 20 Zn-ppm s N N N N N N N N N N N N N V N N N N N <200 N N N N N N N N N N N N N N N N N N N N N N N N N Zr-ppm s 50 50 20 30 50 50 70 50 20 30 20 30 20 50 70 70 20 30 50 50 30 70 50 20 15 30 20 50 50 30 30 50 5 30 50 50 30 50 30 50 30 30 30 30 30 Th-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N M N N N N N N Tablp 5. Semiguantitative spectroqraphic analyses of stream-sediment samples collected on the U.S. Virgin Islands>--Continued Sample 83ST081 8351082 83Sr063 83ST085 83ST086 83ST087 83FT088 83ST089 83ST090 83ST091 83ST092 83ST093 83SI094 83ST096 83SI097 83Sr098 83ST099 84SJC01 84SJOC2 84SJG03 84SJC04 845J005 84SJ006 84SJ007 84SJ008 84SJ009 84SJ010 845J01 1 845J012 845J013 84SJ014 84SJ015 8U5J016 845J017 84SJ018 845J019 845J020 84SJ021 64SJ022 84SJ023 84SJ024 845J025 84SJ026 84SJ027 843J028 Latitude 18 20 18 18 20 12 18 20 15 18 21 32 18 21 17 18 21 43 18 22 11 18 22 9 18 21 S? 18 21 39 18 21 32 18 21 4 18 20 45 18 21 28 18 20 44 1fl 20 49 18 20 58 18 20 27 18 20 29 18 20 49 18 20 53 1P 21 8 18 21 12 18 21 12 18 21 12 18 21 16 18 21 57 18 21 57 18 21 54 18 21 38 18 21 28 18 21 50 18 21 27 18 21 15 18 21 7 18 21 20 18 21 30 18 21 4 18 20 57 18 20 55 18 20 3? 18 20 42 18 21 29 18 21 33 18 21 9 Longitude Fe-pct. 64 54 64 54 64 53 64 54 64 55 64 56 64 57 64 57 64 58 65 0 65 1 65 1 65 1 65 1 64 56 64 57 64 57 64 47 64 47 64 46 64 46 64 46 64 46 64 45 64 45 64 45 64 44 64 44 64 43 64 44 64 44 64 43 64 43 64 43 64 42 64 42 64 42 64 43 64 43 64 43 64 42 64 43 64 41 64 41 64 40 24 12 30 30 16 31 8 38 35 55 5 22 22 55 55 8 46 22 6 51 36 30 5 49 21 9 29 17 40 $ 22 6 42 2 48 22 4 24 29 27 55 5 45 27 59 s 5.0 5.0 5.0 5.0 3.0 7.0 3.0 5.0 5.0 5.0 5.0 3.0 7.0 3.0 5.0 5.0 5.0 3.0 5.0 7.0 5.0 5.0 5.0 3.0 5.0 5.0 7.0 5.0 5.0 5.0 5.0 3.0 5.0 1.5 10.0 3.0 3.0 5.0 3.0 3.0 2.0 5.0 3.0 7.0 5.0 Ng-pct. s 1.00 1.00 1.50 1.50 .30 1.00 1.00 1.00 .70 1.50 1.00 1.00 1.50 .70 1.50 1.50 1.00 .70 1.50 3.00 2.00 1.50 2.00 2.00 2.00 1.50 3.00 1.50 2. 00 1.50 1.50 2.00 1.50 .70 3.00 1.00 1.00 1.50 .70 1.00 1.00 2.00 1.00 1.50 1.00 Ca-pct. s 3.00 1.50 5.00 3.00 1.50 2.00 3.00 1.50 1.00 3.00 1.50 2.00 1.50 1.50 3.00 3.00 5.00 3.00 5.00 10.00 7.00 5.00 7.00 5.00 5.00 3.00 2.00 5.00 5.00 3.00 2.00 3.00 2.00 .70 3.00 2.00 1.50 1.50 1.00 1.50 1.50 3.00 2.00 2.00 2.00 Ti-pct. s .50 .30 .30 .50 .30 1.00 .30 .30 .50 .50 .50 .30 .50 .30 .50 .30 .30 .50 .50 .50 .30 .50 .50 .30 .50 .50 .50 .50 .50 .50 .50 .50 .30 .30 .50 .30 .30 .50 .30 .50 .30 .50 .50 .50 .70 Hn-ppm Ag-ppm As-ppm Au-ppm s 1,000 1,000 1,000 1,000 1,000 1,500 1,000 1,500 1,500 1,000 1 ,500 1 ,000 1,500 1,000 2,000 1,000 1,000 700 1 ,000 1,500 1 ,000 1,000 1,500 1 ,000 1,500 1,500 1,000 1,500 1,500 1,500 1,000 1,500 1,000 1,500 1,500 1,000 1 ,000 1,000 1,000 1,000 1,500 1,500 1,000 1,500 1,500 s N N N N V N N N V N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N .5 N N N N s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N s N N N N N N N N N N N N N N N N N N N N N N N »! N N N N N N N N N N V N N V N N V N N N V B-ppm c; 15 20 10 15 15 <10 10 < 10 <10 15 15 10 10 10 10 15 N 20 15 10 15 15 15 10 10 N 15 10 10 10 N 15 15 10 N 10 10 10 10 15 10 15 15 10 V Ra-ppm Pe-ppm s 200 150 150 200 300 500 300 300 500 200 200 100 100 200 200 150 150 200 150 150 150 150 150 100 150 150 300 1,000 200 200 200 300 150 200 150 150 150 150 150 500 150 300 150 200 100 s N N N N <1 N N N N N N N N N N N N N N N N N N N N N N < 1 < 1 N N < 1 < 1 < 1 N <1 < 1 N N N N N < 1 N N Table 5. Semiquantitative spectrographic analyses of stream-sediment samples collected on the U.S. Virgin Islands>--Continued Sample 83SI081 83ST082 83ST083 83ST085 83ST086 83ST087 8351088 83ST089 83ST090 83SI")91 83SI092 83ST093 83ST096 83?T097 83SI098 83ST099 8WSJ001 8USJ002 8USJ003 84SJOOU 8USJ005 8USJ006 8USJ007 8USJ008 8<4SJ009 8I4SJ010 8I4SJ011 8I4SJ012 8U3J013 8I4SJ01U 8I4SJ015 8I4SJ016 84SJ017 8USJ018 8I4SJH19 8USJ020 84SJ021 6I4SJ022 8USJ023 8U3J02U 8I4SJ025 8U3JC26 8I4SJ027 8I4SJ028 Bi-ppn s N V V N N N N N N N N N N N V N N N N N N N N N N H N N N N N N N N N N N N N N N N N N N Cd-ppm s N V N N N N N N N N N N N N H N N N V N N N N N N N N N N N N N N N N N N N N N N N N N N Co-ppm s 10 15 10 20 7 10 10 20 15 15 15 10 20 15 20 20 20 7 10 20 20 20 15 20 30 15 30 20 '30 30 20 30 30 7 50 10 7 15 7 7 7 10 10 10 10 Cr-ppm s 20 30 15 30 20 10 20 10 20 15 20 15 20 15 30 30 30 20 70 100 100 70 50 100 50 30 50 30 50 500 70 50 20 15 70 20 20 20 30 30 30 100 30 30 15 Cu-ppm s 100 100 100 100 30 100 70 100 100 150 100 150 200 100 100 100 100 70 70 100 70 70 70 100 70 70 200 100 70 100 100 100 200 50 200 30 30 50 30 150 30 50 30 50 50 La-ppm s N N N N <20 N N N N N N N N <20 N N <20 <20 N <20 <20 N N <20 N N <20 <20 <20 <20 N 20 <20 <20 N <20 <20 N N 20 N N <20 N N Mo-ppm s N N N N N V N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Nb-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N H N N N S N N N N N N N N N N N Ni-ppin s 15 20 15 20 10 15 15 15 15 50 15 10 20 15 15 20 20 15 30 70 30 30 15 30 15 10 50 15 20 20 20 20 10 7 30 10 10 15 10 10 50 20 20 20 5 Pb-ppm s 20 20 20 50 30 15 15 15 15 10 10 10 10 10 2,000 500 20 30 30 30 20 20 20 15 20 15 15 30 15 70 20 15 15 30 15 10 30 10 10 30 70 30 30 10 15 Sb-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N y N N N N N N N N N N N N N N N Sc-ppm s 20 20 20 20 15 20 20 30 20 30 30 20 30 20 30 30 30 30 30 50 30 30 30 30 50 30 30 20 30 20 20 30 30 10 30 15 15 20 10 15 15 30 15 30 15 Sn-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N <10 N N 10 N N N N Sr-ppm s 300 200 200 300 300 500 300 300 300 300 500 200 200 200 300 300 500 500 500 700 500 300 500 300 500 300 300 300 500 200 200 300 150 <1CO 200 300 200 150 100 150 200 300 150 200 200 CD CO Table 5. Semiquantitative spectrographic analyses of stream-sediment samples collected on the U.S. Virgin Islands>--Continued Sanple V-ppm W-ppm Y-ppm Zn-ppst Zr-ppm Th-ppm r s s s s s 83ST081 83ST082 83SP083 83ST085 83ST086 83ST087 83SI088 83ST089 83ST090 83SI091 83SI092 83ST093 83SI09<4 83ST096 83ST097 83ST098 83ST099 8USJ001 8USJ002 8USJ003 BUSJOOU 8USJ005 8USJ006 8USJ007 8USJ008 8USJ009 8USJ010 84SJ01 1 eusjoi2 PUSJM3 p<45joiu 814SJ015 84SJC16 8U5J017 8<4SJ018 8U5J019 8USJ020 8USJ021 8USJ022 8USJ023 8USJ02U 8USJ025 8<4SJC26 8USJ027 8USJ028 300 200 300 300 150 300 200 300 300 300 300 300 500 200 300 300 300 300 300 500 500 300 300 300 500 300 300 300 300 300 300 300 300 70 500 70 150 200 100 150 150 300 200 500 200 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 20 20 15 15 20 20 15 15 20 15 20 10 15 15 20 15 15 20 20 20 15 20 20 20 20 20 20 20 20' 20: ' 20 20 15 15 20 20 20 20 20 20 20 20 20 20 30 N V N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N V N N N N N N 20 30 20 30 30 50 2P 30 30 20 30 10 20 20 30 15 20 100 70 30 30 30 30 30 30 30 30 30 30 30 30 50 15 30 30 30 70 30 30 50 30 50 50 30 70 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Table 5. Semiguantitative spectrographic analyses of stream-sediment samples collected on the U.S. Virgin Islands>--Continued Sample 84SJG29 84SJ030 84SJ031 84SJ032 843J033 84SJ034 643J035 84SJ036 84SJ037 84SJ038 84SJ039 84SJ040 84SJ041 84SJ042 84SJ043 84SJ044 84SJ045 84SJ046 84SJ048 84SJC49 84SJ050 84SJ051 84SJ053 84SJ054 84SJ055 84SJ056 843J057 84SJ058 84SJ059 84SJ070 84SJ071 84SJ072 84SJ073 84SJ074 84SJ075 84SJ076 84SJ077 84SJ078 84SJ079 84SJ087 84SJ088 84SJ090 8 4 S J 0 9 5 P4SJ096 84SJ^97 Latitude 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 20 20 20 20 20 19 19 19 19 19 19 19 19 19 19 19 19 19 19 19 19 19 20 20 20 20 20 20 19 20 20 20 20 20 20 20 20 19 20 19 21 21 21 22 22 20 33 43 17 3 44 19 10 3 15 46 50 49 39 32 24 24 26 39 44 35 29 27 29 19 21 7 4 22 39 32 43 20 9 5 4 7 47 10 44 17 45 55 18 13 Longitude Fe-pct. 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 40 40 40 42 42 42 42 42 42 43 43 43 43 43 43 44 43 43 45 45 45 45 45 45 45 45 45 45 46 46 46 45 46 46 46 46 46 46 47 44 47 48 48 45 44 23 26 27 49 31 14 5 23 45 9 4 5 11 20 18 4 50 44 57 48 30 27 32 34 36 41 42 51 46 10- 7 40 22 13 16 37 36 40 27 27 36 31 12 26 55 S 5.0 5.0 5.0 3.0 5.0 3.0 3.0 3.0 5.0 2.0 2.0 3.0 3.0 1.5 1.0 1.5 2.0 1.0 5.0 5.0 5.0 2.0 5.0 5.0 5.0 5.0 5.0 3.0 5.0 5.0 5.0 3.0 5.0 3.0 3.0 5.0 5.0 5.0 3.0 3.0 3.0 5.0 3.0 5.0 5.0 Mg-pct . S 1.50 1.00 1.00 1.00 2.00 2.00 .70 1.50 1.50 .70 .70 1.00 1.50 .50 .50 .50 1.00 .70 3.00 2.00 2.00 1.00 2.00 2.00 1.50 1.50 2.00 1.00 3.00 2.00 2.00 1.50 1.50 1.50 1 .00 1.50 1.50 2.00 1.00 1.50 2.00 1.00 1.00 1 .50 1.50 Ca-pct. Ti-pct. s 1.50 1.00 1.50 1.50 2.00 .70 .70 2.00 2.00 2.00 1.00 1.50 1.00 1.00 .70 .70 2.00 1.00 7.00 5.00 5.00 1.00 7.00 7.00 3.00 7.00 5.00 2.00 5.00 5.00 7.00 5.00 3.00 3.00 2.00 3.00 7.00 5.00 2.00 2.00 2.00 2.00 2.00 7.00 3.00 s .50 .50 .50 .30 .50 .50 .70 .30 .30 .30 .30 .30 .30 .30 .30 .30 .30 .20 .50 .50 .50 .30 .50 .50 .30 .30 .50 .30 .50 .30 .30 .30 .30 .50 .30 .30 .30 .30 .30 .30 .50 .50 .50 .50 .50 Mn-ppm Ag-ppm As-ppm s 1 ,000 1 ,500 1,500 1,000 1 ,500 1 ,000 1,000 1,000 1,500 1 ,000 700 1 ,000 1,000 700 1,000 500 1 ,000 1,000 1 ,500 1 ,500 1,500 700 1,500 1,500 1,000 1 ,000 1,500 1 ,500 1 ,000 1,500 1 ,000 1 ,000 1,000 1,500 1,000 1 ,000 1,000 1,500 700 1,500 1 ,000 1 ,000 1 ,000 2,000 1,500 s N N N N N N N N N N N N N N N N N <.5 N N <.5 N N N N N N N N N N N N N N N N N N N N N N N N S N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Au-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N V N N N N N N N N N N N N N N N N B-ppm s 10 N 15 10 10 15 15 10 10 10 20 15 15 20 15 20 20 15 15 10 20 20 10 20 15 15 10 15 15 10 15 <10 10 10 15 15 10 15 15 20 N 15 10 10 N Ba-ppm Be-pi s 100 70 100 200 200 70 150 30 100 150 100 200 300 150 100 100 150 150 100 100 100 300 150 150 150 100 70 150 150 200 150 150 150 150 150 200 150 150 100 200 300 300 300 500 500 s < 1 N N N N N <1 N N <1 <-, N N < 1 < 1 <1 N N N N N N N N N N N < 1 N N N N N N N N N N <1 <1 o < 1 < 1 < 1 <1 Table 5. Semiquantitative spectrographic analyses of stream-sediment samples collected on the U.S. Virgin Islands>--Continued Sample 8USJ029 84SJ030 8USJ031 8USJ032 8I4SJ033 8 14 S J G 3 U 84SJ035 81SJ036 84SJ037 8I4SJ038 8USJ039 8<4SJO<40 8I4SJOI41 8I4SJOI42 8I4SJOI43 8USJOI4I4 PI4SJ015 8USJ046 8U5JQI48 PI4SJOI49 8I4SJ050 8I4SJ051 84SJ053 8I4SJ05I4 8I4SJ055 8I45J056 8I4SJ057 8I4SJ058 84SJ059 8I45J070 8I4SJ071 8I4SJ072 8I43J073 8I4SJ07I4 8USJ075 8I4SJ076 6I4SJ077 8I4SJ078 8USJ079 84SJ087 64SJ088 8I4SJ090 8I45JP95 64SJ096 8I4SJ097 Bi-ppm s N N N N N N N N N N N N N N V N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Cd-ppm s N N K N N N N S N N N V N N N N N N N N V N N N V N V N N N S N N N N N N N N V N V N N N Co-ppm s 10 10 10 10 10 10 7 10 10 5 7 10 10 7 7 7 7 5 15 15 15 7 20 20 15 15 30 20 20 3-.0- 15 15 20 10 15 20 20 30 10 10 10 15 15 30 15 Cr-ppm s 30 50 50 20 30 50 20 50 70 15 30 50 30 20 10 50 70 20 50 70 50 15 70 100 30 70 70 30 70 50 100 50 50 70 30 50 30 50 30 30 50 20 20 30 30 Cu-ppm s 150 50 70 30 150 70 150 70 30 20 15 20 50 30 20 15 30 20 50 70 so 150 70 70 70 70 100 50 70 70 50 50 70 50 50 70 70 100 50 30 100 100 100 100 100 La-ppin s <20 N N <20 N <20 <?0 N <20 20 <20 N <20 <20 N 20 <20 <20 N N N N N <20 N N N 20 N N <20 <20 N <20 <20 N N N <20 N N N <20 N N Mo-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N V N N N N N N K N N N N N N N N N N N Nb-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N V N N N V N N N N N N N N Ni-ppm s 10 15 15 15 15 15 10 20 20 10 7 15 15 15 10 15 10 7 15 15 15 10 15 20 15 20 20 15 20 20 20 15 20 15 20 20 20 20 20 10 30 15 15 30 15 Pb-ppm Sb-ppm s 10 10 15 20 10 10 10 20 15 15 15 15 20 20 10 10 15 15 15 10 15 30 20 30 15 15 15 15 30 15 20 30 50 15 30 15 20 30 20 10 10 20 15 15 20 s N N N N N N N N N N N N N N N V N N N N N N N N N N N N N N N N N N N N V N N N N N N N N Sc-ppm 5 15 15 20 15 20 20 20 30 30 20 15 20 30 15 10 15 20 10 30 30 30 15 50 50 30 30 50 30 30 30 30 30 30 30 20 30 30 30 15 20 2r 15 20 30 20 Sn-pp« s N N N N N N N N N N N N N N N N N N N N N N N 15 N N N N N N N N N V N N S N N N N N V N N Sr-ppm s 150 150 150 150 200 100 150 150 200 200 150 150 150 150 100 150 200 200 300 300 300 150 500 500 300 500 300 300 500 500 500 500 500 500 300 500 500 500 500 300 300 500 500 1,500 500 Table 5. Semiguantitative spectrographic analyses of stream-sediment samples collected on the U.S. Virgin Islands>--Continued Sanple V-ppm Zn-ppm Zr-ppm s s Th-ppm s 8U3J029 843J030 8USJ031 H43J032 845J033 8I45J03U 8I4SJ035 8USJ036 8U3J037 8USJ038 8U3J039 8U5J040 8<4SJOiH 8U5JOU2 8I45JOU3 8USJPI44 8USJOU5 8USJOU6 845J048 8USJ049 8U5J050 84SJC51 8I4SJ053 8U3JC54 8USJ055 8U3J056 8USJ057 84SJ058 8USJ059 8USJ070 8USJ071 8USJ072 8U3J073 8USJ074 8USJ075 8USJ076 8USJ077 8USJ078 8I4SJ079 8U3J087 8I43J088 BU5J090 8USJOQ5 8USJ096 8U3J097 200 300 2^0 150 300 2CO 200 2CO 300 150 100 150 150 100 70 100 150 70 300 500 500 150 500 500 150 150 500 200 500 500 500 300 300 300 300 300 300 300 200 200 2CO 2^0 200 200 300 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 20 15 20 20 20 20 20 20 20 50 20 20 20 30 20 20 20 15 20 20 20 20 20 20 20 20 20 50 20' 15 < ' 20 20 20 50 20 20 20 15 10 30 15 20 20 20 20 N N N N N N N N N N N N N N N N N N V N N 200 N N N N N tf N N N N N N N N N N N N V N N N N 50 30 30 50 15 30 50 20 30 70 50 50 30 50 30 50 30 30 50 30 30 30 30 50 30 30 30 50 30 30 30 30 30 50 50 70 30 15 30 50 70 30 50 70 50 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Table 5. S*»miquantitative spectrographic analyses of stream-sediment samples collected on the U.S. Virgin Islands>--Continued CO Sample 8USJ098 8USJC99 8USJ100 8USJ101 8USJ102 8USJ103 8USJ101* 8USJ1C5 8USJ106 80SJ107 8USJ108 8MSJ110 8USJ200 8USJ201 8U5J202 8USJ203 8USJ205 8USJ206 8U3J2C7 80S3001 8US3002 8US3003 8USCOOU 8USC005 8USC006 8US3007 8USC008 8US3009 8US3010 8USC012 8U53013 8US301U 8US3015 8USCP16 8USC017 8USC018 8US3C19 8US3020 8UFC021 81*53022 8US3023 8i*?302<* 8USC025 8US3G26 8US3C2R Latitude 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 22 22 21 20 20 20 20 21 18 18 18 19 20 20 20 20 20 20 19 U6 U6 1*6 1*5 U5 1*5 U5 U5 1*6 1*6 t»6 U6 U6 1*6 U6 U6 U6 U5 1*5 <*5 U5 U5 i*U MS t»U Hi* 21 3 UU 58 1*9 18 1*1* 1*8 59 1*0 22 U3 1*6 1*7 UO 35 22 11* 38 1 17 8 5U 1*6 11 18 1 2 17 39 51 23 27 33 31* 39 39 UO 38 37 50 U8 5U 1 59 Longitude Fe-pct. 61* Ui* 61* U3 6U U2 6U U1 6U 1*1 6U UP 6U UO 6U U1 6U 1*3 6U U2 61* 1*2 6U 39 61* Ui* 6U UU 6U UU 6U UU 61* UU 61* UU 61* UU 61* 1*9 61* 1*8 6U U9 6U U9 6U 50 6U U9 6U 1*9 61* U9 6U U5 6U <*5 6U U6 6U 1*6 6U U7 6U U7 6U U7 6U U8 61* U7 61* 1*6 6U U6 6U 1*6 6U U7 6U U7 61* 1*8 6U U6 6U U8 6U 1*7 20 5 32 11 27 6 10 U3 15 36 13 5 59 56 52 59 1*8 52 56 21 37 7 UU 1 U7 39 19 1*9 UO 19' 35 30 22 20 7 39 22 55 59 U2 57 5U 7 55 37 s 3.0 5.0 5.0 3.0 5.0 3.0 3.0 5.0 3.0 3.0 3.0 2.0 3.0 2.0 1.5 5.0 3.0 3.0 5.0 7.0 5.0 5.0 10.0 5.0 5.0 3.0 10.0 3.0 5.0 5.0 5.0 3.0 5.0 5.0 3.0 5.0 3.0 3.0 3.0 7.0 7.0 7.0 7.0 5.0 3.0 Mg-pct. s 1.50 2.00 1 .50 1.50 1.50 .70 1.00 1.50 1.50 1 .50 1 .50 .30 .70 .50 .30 1.50 1.00 1.00 1 .50 2.00 2.00 1.50 1.50 2.00 1.50 1.00 2.00 .70 1.00 1.00 1.00 1.00 1.00 1.50 1.00 2.00 1.00 .70 1.00 1.00 1.50 3.00 1.50 1.00 .70 Ca-pct. s 3.00 5.00 2.00 2.00 2.00 .70 1.00 2.00 2.00 3.00 3.00 1.50 3.00 1.00 1.00 5.00 1.50 2.00 3.00 5.00 3.00 3.00 3.00 7.00 3.00 3.00 7.00 1.50 3.00 1.50 2.00 3.00 2.00 3.00 2.00 7.00 3.00 3.00 5.00 3.00 3.00 7.00 2.00 3.00 2.00 Ti-pct. s .50 .50 .50 .50 .50 .30 . 30 .50 .30 .50 .30 .50 .20 .30 .20 .30 .30 .30 .30 1.00 .50 .50 1.00 .70 .70 .70 >1.00 .30 .50 .50 .50 .30 .30 .50 .30 .50 .30 .50 .30 .50 .50 .50 .70 .50 .30 Hn-ppra Ag-ppm As-ppm s 1 ,000 1,500 1,500 1 ,000 1,500 700 1,000 1 ,000 1 ,500 700 1 ,000 1,000 1 ,000 700 700 1 ,000 1 ,000 1 ,000 1 ,500 2,000 1 ,500 1,500 2,000 1,500 1 ,500 1,500 2,000 1,000 1,000 1 ,000 1 ,500 1,500 1,500 1 ,500 1,000 1 ,500 1 ,000 1 ,000 1 ,000 1,500 1,500 2,000 2,000 2,000 1,500 s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N s N N N N N N N N N N N N N N N N N N N N N N N N * N N N N N N N N N N N N N N N N N N N N Au-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N B-ppm s 20 N 10 N 10 20 10 10 20 20 20 < 10 10 15 15 15 30 10 20 N 20 <10 N N 20 <10 N 30 30 30 30 20 10 20 15 10 20 20 20 30 10 10 20 20 20 Ba-ppm Be-pp» s 700 500 300 30 70 100 100 70 50 150 50 <20 150 100 70 100 150 100 30 300 500 300 300 300 500 700 500 500 500 300 300 300 500 300 150 300 300 200 300 500 500 500 500 700 500 s o N N N N <1 N N N N N N N < 1 <1 N < 1 N N N N N N < 1 N <! N < 1 <1 N <! < 1 < 1 < 1 <1 <! < 1 N N N <! < 1 < 1 N < 1 Table 5. Seniguantitative spectrographic analyses of stream-sediment samples collected on the U.S. Virgin Islands>--Continued Sample 8USJ098 PUSJ099 84SJ100 84SJ101 8USJ102 8USJ103 84SJ104 8USJ105 B<4SJ106 8USJ107 8USJ108 8USJ110 8USJ200 8USJ201 6USJ202 8KSJ203 Bi-ppm Cd-ppm s s 8USJ206 8USJ207 8USC001 84SC002 84SC003 euscoou 84SC005 84SC!006 8USC007 8USC008 84SC009 8<4SC010 8US3013 8USC01U 84SC018 8US3019 8USC020 8USC021 84SC022 8USC023 84SC12U 8USC025 81SC026 Co-ppn s 10 20 10 7 15 7 7 10 15 10 10 5 10 7 5 10 7 7 10 30 50 20 15 15 20 15 70 20 20 20 15 20 20 20 15 20 20 10 10 20 15 20 30 20 10 Cr-ppm s 20 50 30 100 100 20 50 50 30 30 70 <10 50 15 N 50 30 20 30 50 70 50 30 20 50 20 200 50 50 50 70 100 70 70 70 70 100 100 50 30 100 200 50 50 20 Cu-ppm s 100 100 70 30 70 30 30 30 50 50 50 10 100 15 15 70 30 30 50 150 100 100 100 70 70 70 100 100 100 70 70 70 70 70 70 100 100 70 70 150 100 100 150 100 70 La-ppn s N <20 <20 N N N N N N N <20 N <20 N <20 <20 <20 N <20 30 <20 <20 N 30 <20 20 <20 <20 N N <20 <20 20 <20 <20 <20 20 <20 <20 <20 N N N N N Mo-pptn s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Nb-ppm s N N N N N N N N N N N N N N N N N N S N N N N N N N N N N N N N N N N N N N N N N N N N N Ni-ppm s 10 20 15 20 30 10 10 15 20 20 20 <5 10 10 c 15 15 10 15 30 30 20 7 5 20 10 70 15 15 15 15 20 20 20 15 20 20 20 20 15 20 30 20 15 10 Pb-ppm s 20 20 50 <10 30 10 10 10 10 10 10 <10 30 10 10 15 15 10 10 10 15 10 <10 10 20 15 15 20 10 15 N 15 15 20 15 20 20 10 10 20 15 <10 15 20 <10 Sb-ppm s N N N N N N N N N N N N N N N N V N N N N N N N N N N N N N N N N N N N N V N N N N N N N Sc-ppm s 20 20 20 30 30 10 15 2~ 20 30 30 15 20 15 1C 30 15 15 20 20 30 30 20 20 30 15 30 15 15 20 20 20 20 20 20 30 15 15 15 30 20 20 30 20 15 Sn-ppm Sr-ppm s s N N 70 N S N N N N N 500 500 200 150 150 150 150 150 200 300 200 150 300 150 150 500 200 200 200 700 500 500 500 700 500 1,000 700 300 300 300 300 300 500 500 500 700 300 300 300 300 300 500 500 3CO 300 Table 5. Semiquantitative spectrographic analyses of stream-sediment samples collected on the U.S. Virgin Islands>--Continued Sa uple 8U3J098 8USJ099 8USJ100 8USJ101 8USJ1D2 8USJ103 8USJ10U 8USJ105 6U3J106 8U3J107 8USJT38 8USJ110 8USJ200 8U3J201 8USJ202 8USJ2P3 8U5J205 8USJ206 8USJ207 8USC001 8US3002 8USC003 8USCOOU 8US~005 8USC006 8US:007 8USCT008 8USC009 8USC010 8USC012 8US3013 8USC01U 8US3015 8USC016 8USC017 eus:oi8 8USC019 8USC020 8USC021 8USC022 8US3023 8USC02U eus:o25 8USC026 8UST028 V-ppm s 2CO 300 200 200 3CO 100 150 300 200 200 200 150 200 100 70 300 150 150 300 300 200 300 500 200 300 200 700 150 300 300 200 200 200 300 200 300 150 200 150 300 300 300 300 300 150 W-ppm s N N N N N N N N N N S N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Y-ppiB Zn-ppm s 15 20 20 20 20 20 20 15 15 20 20 20 20 20 15 20 50 20 20 30 20 15 10 50 15 20 20 15 15' 20 / , - 20 20 20 20 20 20 15 15 15 15 20 <10 20 15 15 s N N S IT N N N N N N S N N H N N N N N N N N N N N N <200 N N N N N N N N N N N N N S K N N N Zr-ppm s 50 50 30 30 30 50 50 30 20 30 20 30 20 30 20 30 50 30 30 30 50 30 20 20 30 10 N 30 30 30 30 30 30 50 30 50 30 30 30 30 50 20 70 70 30 Th-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Table 5. Semiguantitative spectrograPhic analyses of stream-sediment samples collected on the U.S. Virgin Islands>--Continued Sample 8aSC029 easco29 eascoso eascosi 6aSC033 eascoao sascoai eascoa2 eascoas 8 a s c o a a 8 U S C ^ a 5 8a?coa6 8 a ^ *"" 0 a 7 eascoae sascoag sascoso eascosi eascos2 eascos3 eascosu 8aSC055 eascosfi eascos7 eascose sascoso eascoeo 8aSC061 easco62 eascoes sascoea sascoes eascoee eascoe? eascoee eascoeg sasco70 easco7 1 eascs72 eascoee sascoge eascrigg eascisa 8a?C200 easc2oi 8aSC202 Latitude 17 as 16 17 aa 17 17 aa 23 17 aa 50 17 as 10 17 a5 «7 17 as ae 17 ae ia 17 as 50 17 as 2 17 aa 28 17 aa ag 17 aa 53 17 as c 17 a5 3 17 as o 17 as a? 17 a3 50 17 a3 53 17 aa 21 17 aa 2a 17 aa 29 17 aa 5 17 aa 26 17 aa 32 17 aa 21 17 aa 7 17 aa 3 17 a3 26 17 a2 a3 17 a2 55 17 a2 51 17 as a 17 a3 a 17 a3 6 17 a3 55 17 as 3a 17 ae e 17 aa 52 17 as 9 17 as 15 17 a7 26 17 as 20 17 as 31 17 as 36 Longitude Fe-pct. ea H7 ie ea as 26 ea ag o ea ae 35 ea as 37 ea 52 20 ea 52 23 ea 52 28 ea 53 a ea 53 28 ea 53 2 ea 52 36 ea 52 6 ea 52 8 ea 51 a2 ea 51 a3 ea 52 38 ea 51 59 ea 51 51 ea 51 ai ea 51 38 ea 51 ao ea 51 2a ea 51 12 ea so 53 ea so 19 ea so 2 ea ag 38 ea 52 o ea 52 p- ea 51 38 ea 51 a ea 51 12 ea so uo ea ag 58 ea ag 21 ea as 50 ea a5 2a ea as ia ea aa 30 ea aa 39 6a 37 32 ea 3a 6 ea 3« 22 ea 3« 31 S 7.0 7.0 7.0 5.0 7.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 5.0 5.0 5.0 3.0 3.0 3.0 5.0 5.0 3.0 5.0 5.0 5.0 5.0 5.0 3.0 5.0 5.0 3.0 5.0 5.0 3.0 5.0 5.0 5.0 2.0 3.0 3.0 3.0 2.0 2.0 2.0 3.0 3.0 Hg-pct. s 1.50 1.50 1.50 1.50 2.00 .70 .70 1.00 1.50 .70 1 .00 1.00 1.00 1.00 1.00 .70 .70 .70 1.00 .70 .70 1.00 .70 1.00 1.00 1.00 .70 1 .00 1.00 .70 1 .00 1 .00 1.00 1.00 1.00 1.00 .70 1.00 .70 .70 1.00 .50 .70 .70 .70 Ca-pct. Ti-pct. s 5.00 5.00 3.00 3.00 5.00 3.00 10.00 1.00 1.00 1.00 .70 1.50 1.50 1.50 5.00 2.00 2.00 2.00 3.00 1.00 1.50 2.00 1.50 5.00 5.00 3.00 3.00 5.00 3.00 1.00 2.00 2.00 10.00 3.00 3.00 5.00 10.00 15.00 15.00 15.00 20.00 1.50 1.50 1.00 1.50 s .50 .50 .50 .50 .70 .30 .30 .30 .30 .50 .30 .30 .30 .30 .30 .30 .30 .30 .50 .30 .30 .30 .30 .30 .50 .30 .30 .30 .50 .30 .50 .50 .30 .70 .50 .50 .20 .30 . 15 .20 . 15 .30 .30 .20 .30 Hn-ppm Ag-pi s 1,500 1,500 2,000 1,500 2,000 1 ,000 1,000 1,000 1 ,000 1,000 1 ,500 1,000 1 ,000 1,000 1 ,000 1,000 1,500 1,500 1,500 1 ,000 1,000 1,000 1 ,000 1 ,000 1,000 1 ,000 1,000 1,500 1,000 1,000 1,500 1,500 1,000 1,000 1,500 1,500 700 700 700 700 300 1,000 1,000 700 1,000 s N N N N N v N N N N <.' N N N N N N N N <.! N N N N N N N N N N N N N N N N N N N N N N N N N As-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Au-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N B-ppm s 30 30 20 10 10 15 15 20 30 50 70 50 30 50 20 20 50 50 20 70 30 30 70 20 15 15 20 20 50 30 30 30 50 30 50 20 30 30 50 50 10 70 30 50 100 Ba-ppm s 500 500 500 300 700 500 300 500 700 700 1,000 500 500 1,000 150 200 700 700 200 500 150 150 500 200 200 300 200 300 500 500 500 500 500 500 300 500 500 500 200 200 150 700 500 700 700 Be-ppm s o < 1 N N <1 <-, < 1 <1 1 < 1 <1 < 1 N < 1 N N < 1 <1 < 1 <1 <-, < 1 < 1 <1 N N N N N <1 <! < 1 <1 N N <-, < 1 < 1 < 1 <1 <-, 1 < 1 1 < 1 Table 5. Semiguantitative spectrographic analyses of stream-sediment samples collected on the U.S. Virgin Islands>--Continued Sample 8USC029 8<4SC029 8USC030 8US3031 8US3033 8USCOUO e^scom 8<4SCO<42 8USCOU3 8USCOUU 8UPCOU5 8USC0146 8USCOU7 8USCOU8 8KSCOK9 8USC050 8USC051 8HSC052 8US2053 8USZ05U 8USC055 8USw056 8USC057 8USC058 8f4SC059 8USC060 8*45-061 8USC062 8USC063 8USC06<4 8USC065 suscoee 8USC067 8USC068 8USC069 8USC070 8US3071 8USC072 8USC086 8USC09R 8US-099 8USCl5f4 8USC:200 8usc:20i 8USC20? Bi-ppm s N N N N N N N N N N N N N N N N N N N N N N V ft N N N N N N N N N N N N V N N N N N N N N Cd-ppm s N N N N M N N N N N V N N N N N N N N N N N N N N N N N N V N N N N N N N N N N N N N N N Co-ppin s 30 30 20 30 30 15 10 15 30 10 10 10 15 15 10 10 15 15 15 20 10 15 20 20 15 15 20 20 '20 '10 20 15 10 15 15 15 10 15 <5 5 N 7 10 10 15 Cr-ppm s 100 100 70" 100 100 30 50 100 200 70 100 100 50 100 70 30 70 70 30 100 30 50 100 50 50 70 70 20 20 20 20 30 50 50 20 30 30 100 70 70 70 70 50 70 100 Cu-ppm s 100 100 100 100 150 70 50 50 100 100 100 100 100 100 70 50 100 100 70 100 70 100 100 50 30 50 50 50 100 70 70 70 50 70 70 100 50 70 30 30 20 50 50 70 70 La-ppB s N N N <20 <20 N <20 <20 <20 20 20 <20 <20 N <20 <20 <20 <20 N 20 20 N <20 <20 <20 <20 N <20 <20 20 <20 <20 <20 N N <20 <20 <20 <20 <20 <20 20 20 20 <20 Mo-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Nb-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N V N N N N N N N N N N N N N N N Ni-ppm s 30 30 20 30 50 15 20 50 200 50 150 20 20 50 10 10 20 30 15 30 10 20 30 15 15 20 15 15 20 15 15 20 15 20 15 20 20 20 20 20 15 50 30 70 70 Pb-ppm Sb-ppm s 20 20 70 15 20 20 15 30 15 20 50 20 20 50 15 15 15 15 15 20 20 20 20 20 15 15 10 20 15 20 15 30 15 70 20 50 100 20 70 10 N <10 10 10 10 s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Sc-ppm s 30 30 30 30 20 20 1 5 15 10 10 15 15 20 15 20 20 15 15 20 20 15 20 15 20 30 30 30 20 30 7 20 15 10 20 20 20 7 10 7 7 5 7 10 7 15 Sn-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 20 N 15 N N N N N N N N V Sr-ppm s 500 500 500 500 500 500 500 300 300 300 300 300 500 300 500 500 500 500 500 300 300 500 500 500 700 500 500 500 500 3CO 300 300 300 500 700 500 500 500 300 300 300 200 500 300 300 Table 5. Semiquantitative spectrographic analyses of stream-sediment samples collected on the U.S. Virgin Islands>--Continued O CO Saaple 8I4SCD29 8USC029 84SC030 8<4SC031 8I4SC033 8i4S"OUO easnoul 8I4SCOU2 8I4SCOI43 8USCOI44 8USCOU5 8I4SCOI46 8USCQU7 8I4SCOU8 8I4SCOU9 euscoso 8I4SC051 8I4SCQ52 8I4SC053 8I4SC05U 8I4CC055 8I4SC056 8I4SC057 8I4SC058 suscc 1^ 8I4SC060 8USC061 84SZ062 8USC063 8USC06U 84SC065 8I4SC066 sascoey 8I4SC068 8I4S3069 8I4SC070 8I4SC071 8USC072 8USC086 8I4SC098 8USC099 8USC15I4 8I4SC200 8USC201 8I4SC202 V-ppai s 300 300 300 300 300 200 150 150 150 150 150 150 200 200 300 200 200 200 300 150 150 200 200 300 300 200 200 200 300 150 200 300 150 300 200 300 100 150 70 70 50 100 150 70 150 W-ppai s N N N N N N N N N N N N N N N N N N N N N N N N N S N N N N N N N N N N N N N N N N N N N Y-ppai S 20 20 20 15 20 15 15 20 20 10 15 15 20 20 20 15 20 20 20 20 10 15 20 20 20 20 15 20 20' 15 r ' 20 20 15 15 20 20 15 15 15 15 10 10 20 20 20 Zn-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N H N N N N Zr-ppm s 70 70 50 30 50 30 30 50 50 30 50 50 30 30 30 30 50 50 30 30 20 30 30 30 30 30 30 30 30 30 50 50 30 30 30 30 20 30 20 30 20 30 30 30 30 Th-ppm s N N ' N N N N N N N N N N N N N N V N N N N N N N N N N N N N N N N N N N N N N N N N N N N Table 5. Semiquantitative spectrographic analyses of stream-sediment samples collected on the U.S. Virgin Tslands>--Continued Sample 84SC203 84SC204 84SC205 84SC206 84SC207 84SC208 84SC20Q 84SC210 8'(SC212 84SC213 84SC214 84SC215 84SC216 84S"218 84SC219 84SC220 84SC221 84SC222 84SC223 84S3224 84SC225 8'(SC226 84SC227 84S"229 84SC231 8"SC233 84S~234 84SC235 84SC236 84SC239 84SC240 84SC240 84SC241 84FC242 84SC243 84SC244 8 US "24 5 8USC246 8HSC247 84SC248 84SC249 84SC250 84SC251 R4SC252 84SC253 Latitude 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 45 45 45 45 44 45 45 45 44 44 44 44 45 45 45 45 44 44 44 45 44 44 44 44 44 44 44 45 45 43 44 44 43 43 43 43 43 44 44 44 45 44 44 44 44 34 38 18 13 48 12 0 1 36 17 6 1 41 1 24 5 56 57 57 14 33 13 20 10 12 50 48 3 6 59 5 5 10 13 22 8 46 37 30 34 31 47 26 28 43 Longitude Fe-pct. 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 34 34 35 35 36 34 34 34 36 37 37 37 39 3P 37 37 37 37 36 36 38 38 36 38 39 38 38 39 40 41 41 41 41 40 41 41 40 40 40 40 40 41 41 41 42 39 48 1 33 25 20 35 53 37 7 24 38 12 17 38 40 33 15 46 23 59 39 56 0 3 53 51 3 4 30- ' 17 19 27 42 42 14 10 29 53 47 19 22 39 47 2 s 3.0 3.0 3.0 3.0 3.0 3.0 2.0 3.0 3.0 3.0 3.0 3.0 3.0 5.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 5.0 3.0 3.0 5.0 3.0 3.0 3.0 5.0 5.0 3.0 3.0 5.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 Mg-pct. s 1.00 1.50 1.00 1.00 1.00 1.50 .50 1.50 1.50 .70 1.50 1.00 1.50 1.50 1.00 1.00 1.00 .70 .70 .50 1.00 1.50 1.50 1.00 1.50 .70 1.00 1.50 3.00 1.00 1.00 1.00 1.00 1.50 .70 1.00 .70 1.50 1.00 1.00 2.00 .70 1.50 1.50 .70 Ca-pct. s 1.50 7.00 1.00 1.50 1.00 1.00 1.50 .50 1.50 .30 .70 2.00 2.00 1.50 1.00 1.50 3.00 .70 .70 .70 1.00 1.00 1.00 1.50 3.00 1.50 1.50 2.00 2.00 2.00 1.50 1.50 2.00 1.00 .70 1.00 1.50 1.50 2.00 1.00 1.50 2.00 3.00 2.00 2.00 Ti-pct. s .30 .20 .30 .30 .30 .30 .30 .30 .30 .30 .30 .30 .30 .50 .30 .30 .30 .30 .30 .30 .30 .50 .30 .30 .50 .30 .30 .30 .30 .30 .30 .30 1.00 .50 .30 .30 .30 .30 .50 .30 .30 .50 .30 .30 .30 Mn-ppm Ao-ppm As-ppm s 1,000 1,000 1,000 1,000 1,000 1,500 1 ,000 1,000 1,500 700 1,000 1,000 1 ,000 1,000 1 ,000 1 ,000 1,000 1 ,000 1 ,500 1,500 1 ,500 1 ,500 1 ,000 1,000 1,000 1 ,500 1,000 1,000 1,500 1 ,500 1 ,500 1,500 1,000 1,000 1 ,500 1,500 1,000 1,000 1,000 1,000 1,000 1,000 1,500 1 ,500 1,500 s N N N N N N N N N N N V N N N N N N V N N N N N N N N N N N N N N N N N N N N N N N M N N s N N N N N N N N N N N N N N N N N V N N N N N N N N N N N N N N N N N N N N N N N N N N N Au-ppm s M N N N N N N N N N N V N N N N N N M N N M N N N N N V N N N N N N N N N N N N N N N N N B-ppm s 200 30 70 30 50 150 70 30 30 70 70 50 30 30 30 50 50 50 70 50 50 70 70 50 30 30 50 20 <10 50 70 70 30 30 50 70 30 30 20 30 15 20 70 30 15 Ba-ppm Be-pi s 300 700 700 300 500 700 500 700 700 700 700 300 700 700 700 700 700 700 500 500 500 700 700 700 700 700 700 700 700 1,000 1,000 1,000 1,000 1,000 500 700 700 1,000 1,000 1,000 1,000 1,000 1,000 1,000 1,000 s <! < 1 < 1 < 1 <1 <! < 1 < 1 < 1 <1 <! N <1 N <1 <-, < 1 < 1 1 <1 <-, < 1 <1 < 1 < 1 <-! < 1 < 1 < 1 <1 <! < 1 < 1 < 1 1 o < 1 < 1 < 1 < 1 o < 1 < 1 < 1 < 1 Table 5. Seiniguantitative spectrographic analyses of stream-sediment samples collected on the U.S. Virgin Islands>--Continued Sample 84SC203 8USC20U 8USC2C5 R4SC206 84SC207 8MSC2C8 84 C C20Q 84SC210 8asC21? 8UFC213 8USC215 8US:216 8UST218 8USC219 8USC220 84SC221 8USC222 8US~223 84SC226 8USC227 8USC229 8USC231 8U5C235 8US3236 8USC2U5 8USC246 8USC2U7 8USC2UR 84SC249 8453250 B<4S:251 84SC252 8USC253 Bi-ppm Cd-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N H N N N N N N N N N N N N N N K Co-ppm s 10 10 15 10 15 15 10 15 15 10 15 10 10 20 15 15 15 10 15 15 15 15 10 15 15 15 15 20 20 *5 15 15 10 10 15 15 15 15 20 15 20 10 10 10 10 Cr-ppm s 50 150 100 50 70 100 70 100 100 70 70 30 150 100 100 100 100 70 150 70 70 70 70 150 150 100 70 150 200 50 100 100 500 500 70 70 200 200 150 150 500 15 30 50 20 Cu-ppm s 70 70 70 50 70 50 30 70 70 70 100 70 70 70 70 70 70 70 70 50 100 100 100 70 100 70 70 100 70 100 100 100 70 100 70 70 50 70 70 70 70 50 70 100 70 La-ppm s <20 <20 20 <20 20 <20 20 <20 <20 20 <20 <20 20 <20 <20 20 20 20 <20 <20 <20 <20 <20 <20 <20 20 <20 <20 <20 20 20 20 20 20 20 20 <20 20 20 20 20 20 20 <20 <20 Ho-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N K N N N N N N N N N Nb-ppm s N N N N K N N N N N N N N N N N N N N N N N S N N N N N N N N N N N N N N N N N N N N N N Ni-ppm s 50 70 70 20 70 50 30 30 50 30 30 15 150 50 100 50 100 70 100 70 50 70 50 50 100 100 70 150 200 30 100 100 70 70 30 30 70 100 70 100 200 10 50 30 5 Pb-ppm Sb-ppm s <10 10 10 <10 <10 <10 <10 10 15 <10 15 10 20 10 15 10 10 10 10 10 10 10 10 <10 10 <10 10 10 20 20 15 15 10 10 20 <10 15 10 10 15 20 10 2C 15 30 s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Sc-ppm s 10 7 1C 15 10 10 7 10 10 1D 15 15 7 15 10 1C 15 10 10 10 10 20 15 15 20 10 10 15 15 15 10 10 10 10 10 10 7 10 10 7 10 1C 10 10 7 Sn-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N K N N Sr-ppm s 300 300 300 300 200 300 500 300 300 300 300 500 500 500 300 500 500 300 200 150 300 300 300 300 300 300 300 300 300 300 300 300 500 300 200 300 300 300 500 300 300 700 500 300 500 Table 5. Semiguantitative spectrographic analyses of stream-sediment samples collected on the U.S. Virgin Islands>--Continued o en Sample 8USC203 8USC2DU eas:2os 8US3206 8USC207 8US:208 8USC209 8USC210 8I4ST212 84SC213 8USC2H4 8aS"215 84SC216 84SC21B 84SCT219 845:220 8USC221 84SC222 8USC223 8US322U 8USC225 8US3226 8USZ227 845^229 8052231 845^233 8USG23U 84SC235 8USC236 8^S:?39 84Sr2i40 84SC2UO 8USC241 8USZ2U2 8USC243 eusr2uu 8US:2i45 8USC2U6 8US32U7 84SC2U8 8USC2U9 84SC250 8USZ251 8USC252 8USC253 V-ppm s 100 100 100 150 150 150 1CO 150 100 150 150 200 100 2CO 150 150 150 100 1^0 150 150 200 150 200 300 100 150 150 150 200 150 150 200 200 100 150 150 150 200 100 150 150 150 150 150 W-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N ff N N N N N N N N N N N N Y-ppm s 15 15 20 15 15 20 20 20 20 20 20 15 15 20 20 20 15 15 15 15 15 20 15 20 20 15 20 15 20' 20 r, ' 20 20 20 20 20 20 15 15 15 15 20 20 15 20 15 Zn-ppm s N N N N N N N N N N N N N N N N N N N N N N N V N N N N N N N N V N N N N N N N N N N N N Zr-ppm s 30 30 30 30 30 30 30 30 30 30 30 20 30 30 30 30 50 30 30 30 50 50 30 30 50 30 50 30 30 70 50 50 50 50 100 70 150 30 70 50 50 100 50 50 30 Th-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Table 5. Semiquantitative spectrographic analyses of stream-sediment samples collected on the U.S. Virgin Islands>--Continued Sample 84SC254 84S3255 84SC256 84SC257 84SC258 8USC263 84SC299 84SC300 Latitude 17 17 17 17 17 17 17 17 44 27 44 17 43 54 43 25 43 30 45 9 45 45 45 42 Longitude Fe-pct. 64 42 64 42 64 42 64 42 64 42 54 44 64 51 64 50 4 37 19 4 13 59 2 41 s 3.0 5.0 3.0 3.0 5.0 3.0 3.0 5.0 Mg-pct. 1 1 1 1 1 1 s .00 .50 .00 .70 .50 .70 .00 .50 Ca-pct . 2 3 1 1 1 3 3 s .00 .00 .50 .70 .50 .50 .00 .00 Ti-pct. s .30 .30 .50 .30 .50 .30 .30 .30 Hn-ppm Ag-ppm s 1,500 1,000 1 ,000 1,500 2,000 1 ,000 1,000 1,000 s N N K N N N K V As-ppm s N K N N N N K N A u - p pm s N N N N N N N N B-ppm s 70 30 30 30 50 70 K <10 Ba-ppm s 700 700 1,000 700 1,000 500 300 500 Be-ppm s <1 <1 <1 <1 <1 <1 <1 <1 Table 5. Semiquantitative spectrographic analyses of stream-sediment samples collected on the U.S. Virgin Islands>--Continued Sample 8<4S::25U 8*457255 8*4SC25<S 84SZ257 8't^:258 8USZ263 B u ^ "" 2 Q 9 g i|C] " ^ Q Q Bi-ppm s N N N N N N N N' Cd-ppm s N S N N N N N N Co-ppm s 10 10 10 10 20 10 10 10 Cr-ppm s 15 20 30 30 30 30 10 15 Cu-ppm s 100 100 70 70 100 70 50 70 La-ppm s 20 <20 20 20 <20 <20 <20 <20 Mo-ppm s N N N N V N N N Nb-ppm s N N N N N N N N Ni -ppm s 10 7 20 20 50 20 5 10 Pb-ppm s 30 <10 15 10 15 15 <10 10 Sb-ppm s N N N N N N N N Sc-ppm 5 10 10 10 1C 10 10 15 15 Sn-ppB s N N N N N N N N Sr-ppm s 500 500 300 300 500 200 500 500 Table 5. Semiguantitative spectrographic analyses of stream-sediment samples collected on the U.S. Virgin Islands>--Continued Satiple V-ppm H-ppm Y-ppm Zn-ppm Zr-ppra Th-ppm s s s s s s 8asc:25u 150 N 15 N 30 N 8USC255 150 N 15 N 30 N 8US"256 150 N 20 N 50 N RUSC257 100 N 20 S 70 N 8USC258 200 N 20 N 100 N 8USC263 150 N 15 N 30 N 8USC299 200 N 20 N 30 N PUS2300 200 N 15 N 30 N Table 6. Semiquantitative spectrographic analyses of the nonmagnetic fraction of heavy-mineral concentratas from the U.S. Virgin Islands [N, not detected; <, detected but below the limit of determination shown; >, determined to be greater than the value shown.) Faiiple La ti tude 83SPDD1 83 51 00 1S R3SI002 83ST002S e3sr?03 83SI003S 83FT004S 83SIOD5S P3ST006S 83SP007S 83SPOD8S 83SI009S 83ST010S 8 3 S 1 0 1 1 S P3SI013S 8 JST014S 83ST? 15S 83SrC16S 835T018S 83SI021S B3ST022S 83ST023S 83SP024S 83Sr025S 83SI026 83SI027S 835T029S 83SPD30S 83SP031S 83STD32 8351033 83SI034 83ST035 83ST036 83SP037 83SI038 83ST039 83ST040 83SP041 83ST042 83^1043 P3ST044S 83Sr-)45S 83SPC/46 P3RT047S 1P 18 18 1R 18 ie 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 1R 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 1R 18 18 18 18 1R 18 1 8 20 20 20 20 20 20 19 19 19 18 17 18 18 18 16 18 18 19 19 18 21 20 20 21 21 21 24 24 22 22 22 21 21 22 22 23 23 23 24 22 22 22 20 19 16 46 46 48 4R 23 23 15 36 7 41 52 0 6 10 33 26 24 47 19 27 15 47 21 17 22 52 7 35 1 37 1 34 49 28 12 0 14 4 1 5 24 21 24 4 42 '14 Longitude Fe-pct. 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 65 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 53 53 52 52 51 51 50 5C 49 49 49 49 49 49 51 52 52 56 57 0 59 58 50 52 53 53 5" 54 54 55 55 55 56 56 58 58 58 58 58 58 59 59 5f 56 53 14 14 44 44 58 58 24 13 40 41 2 25 34 44 52 14 28 42 7 6 39 36 42 54 21 35 45 29 2U- ' 41 15 39 14 57 5 8 21 8 30 32 0 27 15 7 46 p 5.0 2.0 1.0 1.5 1.5 1.5 3.0 5.0 1.5 2.0 1.0 1.5 1 .5 1.5 2.0 1 .5 5.0 3.0 2.0 3.0 1.5 3.0 .7 2.0 1.0 5.0 2.0 3.0 1.5 1.5 1.5 .7 2.0 7.0 2.0 1.5 2.0 1.5 1.5 <.1 2.0 1.5 1 .^ 1.5 .7 Mg-pct . c; .30 .30 .20 .50 .20 .30 .70 .50 3.00 .30 .07 .70 .15 .30 .20 .10 .50 .50 .30 .20 .50 .50 .20 .30 .30 .70 5.00 .50 .30 .50 .70 .30 .^0 2.00 .50 .50 .50 .50 .30 .07 .30 .30 .15 .20 .15 Ca -pet . s 7.00 5.00 10.00 7.00 10.00 10.00 7.00 7.00 5.00 7.00 .20 .30 < . 10 .15 <.10 .15 10.00 7.00 50.00 .20 10.00 7.00 7.00 5.00 7.00 7.00 7.00 5.00 15.00 1.50 20.00 50.00 15.00 15.00 3.00 15.00 10.00 15.00 20.00 50.00 10.00 5.00 .70 10.00 2.00 Ti-pct. s .50 .50 >2 .00 >2.00 .30 .30 .20 .50 . 15 2.00 >2.00 >2.00 >2.00 >2.00 >2.00 >2.00 .70 .20 2.00 2.00 .20 .70 >2.00 2.00 >2.00 .20 .50 .30 1 .00 1.00 2.00 .70 .50 .50 1.00 .05 .15 1.50 .30 .02 .50 .30 2.00 .50 1.50 P n-ppm s 700 700 300 700 700 700 700 700 500 1,000 20 300 70 300 700 200 1,500 700 1 ,000 700 700 700 500 700 500 1,500 1,500 1,500 700 500 700 300 1,000 1,500 1,000 700 700 1,000 1,500 30 1,000 1 ,000 1 ,500 300 200 Ag-ppm s N N 7.0 N N N N N N * N N 0.0 N N 0.0 N N N 7.C 2.0 < 1 . 0 30.0 N N N N N 0.0 N N «J N N N N N N N N N N N N N As-ppra Au-ppm s N N N N N N tj N N N N N N N N N N N N <500 N N N N N N N N N N N N N N N N N N N N N N N N N s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N V N N B-ppm s 70 70 100 150 100 70 50 20 30 50 30 20 N N 30 < 2 n 20 70 N <20 50 5C <20 50 200 50 30 30 70 100 70 70 70 70 50 70 70 7C 100 <20 50 50 30 50 20 Ba-ppm s 530 500 >10,0!>0 1,000 150 200 700 70 100 150 100 300 150 200 >10,000 >10,000 150 1,500 300 300 70 >10,000 200 500 700 500 7" 200 10,000 3,000 3,000 200 >10,000 300 300 <50 700 700 100 5^ 5,000 300 150 5,000 150 Be-ppm s N <2 N N N N N N N <2 N N N N N N N N N N N N N N N N N N N <2 <2 N N N N N N <2 <2 N N N N N N Table 6. Semiquantitative spectrographic analyses of the nonmagnetic fraction of heavy-mineral concentrates from the U.S. Virgin Islands Continued Sample 83?r?01 83ST001S P3SI002 83IHT002F; P 3 5 T 0 0 1 83 C T003S 83^1-OOUS RJSP005S R3ST006S 83 n TOG7S 83310085 83'=:rOOQS P3.ST010S R3ST011S 83SP013S 835T01US 83SI"115S 835P016S 835T018S R3ST021S 83ST022S 83SP023S 83SI02US 83ST025S 83ST026 83SI027S 83SP02QS 83SI030S 83ST031S 83ST032 83ST033 83ST03U P3SI035 83ST036 83ST037 83STD38 83STC39 R3STOUO 83STOU1 essrou? 83STOU3 83STCI4US 83STOUbS 83srou6 83nroi47S Pi-ppm Cd-ppm s N N N N N N N 1DO N N N N N N N N N N N 1 ,000 <20 N N N N N N N N N N N <20 N N N N N N N <20 N N N N s N N N N N N N N N N N N N N N N N N V N N N N N N N N N N N K N N N N N N N N N N N N N N Co-ppm s 10 <10 N 00 N N <10 15 15 10 <10 10 10 <10 15 15 <10 <10 15 15 10 <10 20 10 15 15 15 10 '10 :1t> 10 N <10 15 15 <10 <10 10 10 N 15 10 10 <10 <10 Cr-ppm s 20 20 50 70 20 <20 20 50 700 20 20 <20 <20 30 N 100 30 <20 <20 20 70 50 <20 30 100 20 1,000 150 20 70 150 <20 20 100 N <20 <20 N N N <20 20 <20 20 20 Cu-ppm s 200 70 1,500 100 30 30 50 70 30 50 15 30 N <10 500 50 50 50 30 30 30 70 70 50 30 30 30 70 300 50 500 10 100 70 70 15 20 50 30 N 70 50 <10 1,000 2,000 La-ppm s <50 50 50 50 N <50 N N N <50 50 <50 N 50 <50 N N N 150 <50 N <50 N N <50 <50 <50 <50 50 <50 50 N <50 N N N N <50 <50 N <50 <50 S N N Mo-ppm s 50 500 10 N N N N N 15 N <10 N N <10 20 N N N N N N N 70 N <10 N N N N N <10 N N N N N N N N N 100 N N V N Nb-ppm s N N N N N N N K N K <50 <50 <50 N N N N N V K N N N N N N N N N N N N N N N N N N N N N N N N N Ni-ppm s 1C 15 <10 10 <10 <10 10 10 5H 10 <1C <10 <10 10 <10 20 15 10 10 20 15 20 <10 10 <10 10 70 10 10 10 15 <10 <10 20 15 10 10 10 10 <10 10 10 10 15 <10 Pb-ppm s 200 1,500 1 ,000 50 30 50 50 20 100 100 100 70 30 70 100 <20 20 20 100 >50,000 3,000 700 >50,000 2,000 100 70 <20 30 300 100 70 300 5,000 30 20 <20 30 20 20 150 10,000 20 150 70 <20 Sb-ppm Sc-ppm s N N N »J N N N N N N N K N N N N N N N 1 ,000 N N 500 N N N N N <200 N N N <200 N N N N N N N N H N N H s 50 15 15 30 10 <10 20 30 15 30 50 50 100 30 <10 50 20 15 15 15 10 30 <10 20 30 15 30 20 15 15 15 <10 10 50 15 <10 10 20 20 N 15 15 15 <10 10 Sn -ppm s 100 20 200 N K N N >2,000 30 N 30 N N N N K H N K N 20 N N N 30 N 1,000 N 1,500 N K 300 >2,000 20 200 N N K H N 2,000 K 150 20 N Sr-ppm s 1,000 7CO 1,000 700 7CO 700 700 700 <200 700 1,000 N N N 2,000 700 1,000 700 1,OOC N 2,000 1,500 N 700 700 1,500 700 1,000 2,000 700 1,500 5,000 1,500 1,000 500 700 1,000 50C <200 3,000 1,500 1,000 200 1,000 500 Table 6. Semicjuantitative spectrographic analyses of the nonmagnetic fraction of heavy-mineral concentrates from the U.S. Virgin Islands Continued Sample 83SI001 83ST001S 83ST002 63SI002S 83SP003 83ST003S essroouF P3ST005S 83SI006S 83sroo7s 83SFPD8S 833T009S 83STC10S 83ST011S 8 3 S I D 1 3 S 83ST01US 83ST015S 83Sr016S 8 3 S T 0 1 8 S 83ST021S 83SI022S 63SI023S 83SI02«S 83ST025S 83ST026 83ST027S 83ST029S 83SI030S 83ST031S 83ST032 83ST033 83ST03« 83ST035 83ST036 83BI037 835T03R 83ST039 83SIOHO 83SrO«1 R3STO«2 83SID«3 83srou«s B3STOU5S 83?ITO«6 83SIOU7S V-ppm s 200 100 300 500 100 70 200 300 70 500 70 100 20 70 1 n O 300 500 200 100 30 1SO 500 200 300 300 300 200 300 300 200 300 70 150 500 200 70 100 300 500 20 200 300 700 200 100 W-ppm s N N M N N N N N V V N N N N N N N N N N S N <100 N N N N N N N N N N N N N N N N N N N N «J S Y-ppm s 30 50 100 100 <20 <20 <20 20 N 50 200 200 300 200 150 200 30 20 200 50 <20 <20 50 30 100 <20 N <20 50 20 ' 70 <20 20 <20 N N N 50 <20 N 30 <20 <20 <20 100 Zn-ppm s N K N N N N N N W N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Zr-ppm s 70 2,000 1,500 1,500 30 30 300 30 200 150 500 >2,000 300 100 >2,000 300 50 50 100 300 100 <20 50 500 1,500 70 200 150 500 100 500 20 300 20 30 <20 20 70 30 <20 500 <20 100 30 >2,000 Th-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Table 6. Semiquantitative spectrographic analyses of the nonmagnetic fraction of heavy-mineral concentrates from the U.S. Virgin Islands Continued Fample 8351048 83?TOf49S 83SI050 83SI051 83ST052 8351054 B3STC55 8351-056 83ST057 8351058 83SI059 83SF060 83SI061 83ST0623 83SI063? 8351065 83SI067 83ST068 83ST069 R3ST070 83rro7i 83SI072 B3ST073 83SI0714 83ST075 83SI076 83SI077 83TT078 83SI079 83ST080 83ST081 83ST082 83ST083 83ST085 83ST086 83HT087 83SP088 83SrOB9 83SI090 83SP091 83SI092 83SI093 83Sr09(4 B3SP095S RJSr096 Latitude 18 18 18 18 1R 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 1R 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 1B 18 18 1R 18 18 19 19 19 19 21 20 21 20 20 21 21 72 2U 21 19 19 19 19 19 19 19 20 19 19 19 19 19 20 20 20 20 21 21 21 22 22 21 21 21 21 20 21 21 39 58 38 37 <48 55 0 5M 16 MO 23 M2 <43 52 20 146 141 59 36 UO (42 19 27 5 (44 3M 12 11 30 13 18 12 15 32 17 143 11 9 52 39 32 (J 145 15 28 Longitude Fe-pct. 6M 614 614 6<4 614 6U 6(4 65 65 65 65 65 65 65 65 614 6U 6U 6U 614 614 514 64 6U 64 614 6U 6U 6U 64 6U 6U 6(4 64 64 64 64 6(4 6U 65 65 65 65 65 65 53 53 55 56 57 58 59 1 2 14 5 2 3 3 3 59 51 51 51 52 52 53 53 53 53 5(4 5(4 53 54 54 5U 54 53 5 't 55 5fi 57 57 58 0 1 1 1 0 1 (4 28 18 58 31 21 10 5M 6 147 e UP 9 140 36 37 1(4 1U 140 23 25 29 28 3 0 35 U2 59 16 30-. - 2U 12 30 30 16 31 8 38 35 55 5 22 22 10 55 s 1.5 1.0 1.5 1.5 1.5 2.0 1.5 5.0 5.0 1.5 2.0 2.0 3.0 2.0 5.0 2.0 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 2.0 2.0 1.5 5.0 2.0 2.0 5.0 3.0 5.0 5.0 1.5 5.0 1.5 3.0 5.0 5.0 5.0 5.0 3.0 1.5 5.0 tfg-pct. s .70 .20 .30 . 15 .20 .20 .30 .70 .50 .30 .50 .30 .30 .30 .50 .30 .20 .15 .20 .20 .20 .30 .30 .30 .20 .30 .50 .70 .15 .30 .50 .30 .30 .70 .15 .30 .30 .30 .30 .70 .50 .50 .50 .50 .50 Ca-pct. s 2.00 .15 15.00 3.00 .15 .50 20.00 7.00 7.00 15.00 5.00 7.00 7.00 10.00 10.00 7.00 .20 .30 .70 1.50 7.00 1.50 2.00 20.00 5.00 7.00 10.00 7.00 10.00 15.00 10.00 7.00 15.00 10.00 2.00 7.00 7.00 7.00 5.00 5.00 7.00 7.00 7.00 7.00 7.00 Ti-pct. s >2.00 >2.00 2.00 >2.00 >2.00 >2.00 .70 .15 .50 .05 .30 .20 .50 .30 .30 .15 >2.00 >2.00 >2.00 >2.00 1.00 >2.00 >2.00 .15 1 .00 2.00 >2.00 .70 .70 2.00 .50 .50 .50 .30 .20 .50 .10 .15 .30 .30 .70 .15 .15 .10 .20 Mn-ppra s 700 150 503 700 100 100 1 ,000 1,000 1 ,500 1,000 700 1 ,000 2,000 1,500 1,000 1 ,000 300 300 300 500 700 500 700 700 1,000 1,000 300 1 ,000 2,000 1,000 1,500 1,500 1,500 1,500 700 1 ,500 700 1,500 1 ,000 1 ,000 1,000 1,500 700 1,000 1,500 Ag-ppm As-ppm Au-ppm s 15.0 2.0 1. 5 N 1.0 5.0 5.0 N N N N N N N N N N N N <1.0 N N N K N N N N N N N N K N N K N N N N N N N 7.0 N s N «} N N N N N N N N N N N N N N N N N N N N N N N N N N K N N N N N N N V N N N N N N N N s N N «J N N N N N N N N N V N N N N N N N N N N N N N N N N N N N N N N N V N N N N N N N N B-ppm s 70 N 50 50 N 20 30 30 50 50 <20 30 20 50 2C 50 50 150 100 70 50 <20 <20 30 20 20 N <20 <20 70 70 7C 70 50 30 30 50 50 50 50 100 30 30 20 2C Ba-ppm s <50 <50 3,000 70 50 >10,000 1,001 50 100 150 200 10,000 500 5,000 100 700 70 300 200 150 10,000 1,500 100 300 <50 1,000 <50 150 2,000 3,000 200 50 70 700 300 300 1,000 70n 700 150 150 50 1,500 50 100 Re-ppm s N N N N N N N N N N N N N <2 N N N <2 <2 <2 N N N N N <2 N N N N N <2 N N N <2 N N N N N N N N N Table 6. Semiquantitative spectrographic analyses of tne nonmagnetic traction ot neavy-minerai concentrates the U.S. Virgin Islands--Continued Sanplp 83STOU8 83SIOU9S 83ST050 83ST n 51 P3ST052 83?T05«4 83ST155 83ST056 83ST057 P3ST058 P3?T059 83ST060 83ST061 83ST rt 62S P3ST063S 83ST065 83ST067 835T068 83ST069 R35T970 83ST071 83ST072 83ST073 R3ST07U 83ST075 P3ST076 83ST077 83^1078 P3ST079 B3ST080 83ST081 83STOP2 83SIOfl3 83ST085 83ST086 P3ST087 83Sr9P8 P3ST089 ps^rooo P3 CT091 P3ST092 P35TOQ? P35T09U 83ST095S P3ST096 Bi-ppm CM-ppm s >2,000 30 <20 N N 50 <20 N N N N N N N V N N N N N N N N N N N V N N N N N V N N N N N N N N N V N N s N N N N N N N N N N N V V N V N N K N N K N N N N N N N N N N N N N N N I* N N V N N V N N Co-ppm s 10 10 N 10 15 N 10 15 10 00 00 <1 0 00 oo 00 00 10 00 oo 00 N tf N N 00 00 00 10 00 N 10 00 10 10 00 00 N 15 15 15 15 15 10 N < 10 Cr-ppm s 100 50 50 <20 N 20 50 20 N <20 50 30 20 20 50 20 30 20 20 <20 <20 20 30 <20 <20 20 70 150 30 30 20 <20 <20 50 20 <20 <20 20 <20 20 <20 N K <20 <20 Cu-ppm s 700 30 100 < 10 00 150 3,000 50 30 10 30 30 15 1,000 30 200 <10 10 20 15 1,500 20 20 30 50 15 15 200 70 3,000 50 50 50 50 20 50 200 50 50 70 50 70 70 30 50 La-ppm s N <50 <50 50 <50 50 <50 N N N N N N N N N N N N <50 N N N N N N <50 <50 N N N <5D <50 <50 N <50 N <5D <50 N 50 N N <50 <50 Mo-ppm s N 00 H N N N N N N N N N N N N V N N N N N S N N N N H N N N N N N V N N N N N N N N N N N Nb-ppm s N N N N N N N N N N N N N N N N N N V N N N 50 N N N N N N N N N N V N N N N N N N N N N N Ni-ppm s 10 10 10 10 OP 10 15 10 10 00 10 00 10 10 10 10 10 10 10 10 00 10 10 10 10 10 10 15 10 00 10 10 10 10 10 10 10 10 10 10 10 15 10 10 10 Pb-ppm s 300 150 10,000 300 150 7,000 >5^ ,000 3,000 300 50 50 5,000 70 2,000 30 70 50 300 700 3,000 100 500 100 150 50 200 70 700 30 50,000 150 150 70 70 20 1 ,000 300 100 20 20 20 <20 <20 N 30 Sb-ppm s N N <200 H N 1,000 300 N N * N NN - 'J N N N N N S N N N N N N N N N V N S N N N V N N N N w N S N N N Srr-ppm s 50 100 10 50 150 50 10 15 15 00 10 10 10 10 50 10 10 20 30 30 15 20 20 10 15 15 20 20 15 10 20 30 20 20 10 15 < 10 15 20 20 20 15 10 10 15 Sn-ppm s V 7C 1 ,000 20 51 70 2,000 30 N V N N N N N 1 ,000 71 N 300 N 150 N 700 N K 200 N N N 70C 7C N N N N 1 ,000 100 N N 150 N N 7f*0 *? 70C Fr-rpm s N N 1,500 200 N <200 1,500 500 1,000 1,000 500 700 700 1,000 1,000 1,000 N 3CO 200 203 2, 000 <20C N 2,ODO 500 700 1,000 7r>o 7C o 3,000 1,ODC 700 7"0 1,COC 500 1,000 1,000 1,OOC 1,000 700 1,000 300 1,000 1,000 1,500 Table 6. Semiquantitative spectroqraphic analyses of the nonmagnetic fraction of heavy-mineral concentrates fron the U.S. Virgin Islands Continued Sample 83STOU8 83STOU9S 83ST050 R3ST051 83ST052 f-3STi5U 83ST055 R3ST056 83ST?57 83ST058 83ST059 P3ST060 83ST061 83ST062S 83ST063S 83ST065 83?T067 83ST068 83STT69 8351070 83ST071 83ST072 83ST073 R3ST07U 83^1-075 83ST076 83ST077 83ST078 83ST079 83ST080 83ST081 83ST082 R3ST083 83ST085 83ST086 83?T087 83F~r088 8 3 S I 0 8 9 83ST090 83SI091 83STC92 83ST093 83ST09U P3ST095S 83STC96 V-ppm s 300 50 100 70 50 150 200 300 i?o 70 150 100 70 70 300 200 70 70 100 70 100 70 150 100 50 70 200 500 100 70 200 300 500 300 150 300 70 500 .100 300 300 500 500 300 150 W-ppm s ti X ti V M ti U ti V V N N N N N N N N N N N N N N V N N N N N N N N N N N N N N N N N N N N Y-ppn s 150 300 150 100 150 50 50 S <20 N N 20 30 N 20 N 70 100 150 150 20 70 100 N 20 70 70 50 50' 70: 20 20 30 20 <20 20 N <2D <20 <20 50 V N M 20 7n-ppm s N N N N V N N N N N V N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Zr-ppm s 700 500 150 500 700 100 70 <20 30 20 70 700 200 70 50 <20 200 500 1,500 100 150 200 500 <20 150 200 70 70 100 >2,000 50 70 50 50 150 50 <20 20 30 20 500 <20 20 <20 30 Th-ppm s N V N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N H N Table 6. Semiquantltative spectrographic analyses of the nonmagnetic fraction of heavy-mineral concentrates from the U.S. Virgin Islands Continued Sample P3SI&97 83~r098 83SI099 833I1Q7S 83?n03S 83ST104S 83ST105S 83FT 106S 83SI108S 83SI109S 835T1 10S 83ST111S 84SJOC1 84SJ002 84SJ003 84SJ0014 84SJ005 R4SJ006 84SJ007 84SJ008 84SJ009 84SJ010 84SJ011 84SJ012 84SJ013 84SJ014 P.4SJ015 84SJ016 84SJ017 R4SJ018 84SJ019 84SJ020 84SJ021 84SJ022 84SJC23 84SJ024 84SJ025 8457J026 84SJ027 84SJ02R 84SJ029 84SJ030 84SJ031 84SJ032 84SJP33 Latitude 18 20 44 18 20 19 18 20 58 18 18 28 1P 18 57 18 21 33 18 21 44 18 21 «43 18 21 50 18 21 34 18 20 48 18 19 52 18 20 27 18 20 29 1fi 20 49 18 20 53 18 21 8 18 21 12 18 21 12 18 21 12 1P 21 16 18 21 57 18 21 57 18 21 54 18 21 38 18 21 28 18 21 50 18 21 27 18 21 15 18 21 7 18 21 20 18 21 30 18 21 «4 1P. 20 57 18 20 55 18 20 32 18 20 U2 18 21 29 18 21 33 1fi 21 9 18 20 20 18 20 33 18 20 43 18 20 17 18 20 3 Longitude Fe-pct. 64 56 55 64 57 P 64 57 46 64 50 0 64 49 55 64 50 21 6»4 «49 32 64 49 42 64 52 12 64 51 «46 64 51 «45 6U 50 «47 64 «47 22 64 47 6 64 U6 51 61* U6 36 6<4 46 30 6l» U6 5 64 45 49 64 45 21 6U 45 9 64 44 29 64 «4i4 17 6U 43 UO 64 «4U 6 64 «4«4 22 6U «43 6 6U 43 42 64 «43 2 64 42 48/; ' 64 42 22 64 42 4 64 43 24 64 43 2P 64 43 27 64 42 55 64 43 5 64 41 45 64 41 27 64 40 59 64 40 23 64 40 26 64 40 27 64 42 49 64 42 31 s 3.0 5.0 2.0 2.0 5.0 3.0 5.0 2.0 3.0 3.0 7.0 1.5 7.0 10.0 7.0 10.0 10.0 7.0 10.0 10.0 7.0 3.0 2.0 1.0 3.0 1.5 2.0 1.5 1.5 2.0 1.5 1.5 5.0 10.0 5.0 3.0 7.0 15.0 1.5 1.5 3.0 15.0 10.0 2.0 2.0 Kg-pct. s .50 .70 .50 2.00 .50 .70 1.00 .30 1 .00 .70 .50 .30 .50 1.50 5.00 3.00 1.50 2.00 3.00 2.00 1.00 1 .00 .70 .30 .50 .70 1.00 .50 .50 .50 .50 .30 .50 .70 .70 .70 .70 1.50 .20 .30 .70 5.00 1.00 .70 .70 Ca-pct . s 15.00 15.00 20.00 3.00 3.00 15.00 20.00 10.00 3.00 10.00 20.00 3.00 10.00 15.00 15.00 15.00 15.00 10.00 15.00 15.00 15.00 15.00 15.00 10.00 15.00 7.00 15.00 5.00 2.00 7.00 5.00 3.00 15.00 7.00 7.00 5.00 7.00 10.00 .70 3.00 7.00 10.00 3.00 5.00 3.00 Ti-pct. s .20 .30 .10 2.00 2.00 .70 .70 >2.00 .70 1.00 .70 .50 .70 .70 .50 .50 .70 .50 .50 .70 2.00 >2.00 >2.00 >2.00 >2.00 >2.00 >2.00 .30 >2.00 >2.00 >2.00 >2.00 >2.00 >2.00 2.00 2.00 1.50 >2.00 .70 >2.00 >2.00 2.00 1.50 >2.00 >2.00 Kn-ppm s 1 ,000 1,500 1,000 700 1,000 1 ,000 1,500 1,000 1 ,000 700 2,000 1,000 1 ,500 2,000 2,000 2,000 2,000 2,000 2,000 2,000 1,500 1,500 1,500 1,500 1 ,000 1 ,000 1,500 700 1 ,500 1,000 1 ,000 700 2,000 2,000 2,000 1,500 1,500 2,000 500 1,000 1 ,500 5,000 3,000 1,500 700 Ag-ppm As-ppm Au-ppm s 2.0 N N N N N N N N N N N N N N N N N N N N N 1.5 N 150.0 1.5 1.5 N <1.0 N N N N N N 10.0 N N N N N N N 5.0 3.0 s N N N N N N N N N N N H N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N s N N N N N N N N N N N N V N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N V B-ppm s 50 70 70 20 20 20 20 20 <20 70 50 30 70 70 7C 70 50 70 70 70 700 50 200 N 20 N 50 20 N 20 N 20 50 70 70 100 100 70 N N N N 50 20 20 Pa-ppm s 200 70 300 100 100 10,000 300 200 300 >10,000 300 >10,000 500 200 200 200 300 200 200 300 500 >10,000 >10,000 2,000 5,000 >10,000 1,500 300 700 2,000 >10,000 2,000 500 300 10,000 7,000 >10,000 5,000 500 700 2,000 150 300 10,000 >10,000 Be-ppm s N N N N N N N N N <2 <2 N <2 <2 N N N N N N <2 N N N N N N N N N N <2 N <2 <2 <2 N N N N N N N N N Table 6. Semiquantitative spectrographic analyses of the nonmagnetic fraction of heavy-mineral concentrates from the U.S. Virgin Islands Continued Sample 83ST097 83Sr098 83SI099 R3ST102S 83ST103S 83SI104S 83ST105S 83SP106S 83ST108S 83ST10PS 83ST11&S 83SP111S 8USJ001 84SJ002 84SJ003 ensjoou 8USJOOS 8USJ006 8USJ007 84SJ008 84SJ009 8USJ010 84SJ011 8USJ012 84SJ013 8HSJ014 84SJ015 84SJ016 8USJ017 8USJ018 8USJ019 84SJ020 84SJ021 84SJ022 84SJ023 8USJ02H 84SJ025 84SJ026 84SJ027 RUSJ028 8USJ029 84SJ030 8HSJ031 8USJ032 84SJ033 Pi-ppm P N N N N N N N N N N N N N N N N N N N N N N 300 N 200 N <20 N N N N N N N N 70 N N N N N N N 30 N Cd-ppm s N N N N N N N N N N N N N N N N N !* N N N N N N N N V N N * N N N N N N N N N N N N N N N Co-ppm s N 10 <1 0 10 10 <10 <10 10 10 10 10 <1 0 <10 15 20 20 15 15 20 15 <10 10 <10 N 15 <10 <10 N '10 r N N N N <10 10 10 <10 15 N N N 70 50 N N Cr-ppm s N <20 <20 500 50 20 30 <20 30 20 30 N 50 70 700 200 100 70 150 200 50 50 30 100 50 70 200 50 50 50 50 50 50 150 70 70 70 100 50 50 70 300 150 70 70 Cu-ppm s 700 300 50 50 50 70 50 20 50 70 50 70 70 100 3,000 70 100 100 100 70 70 50 1,500 20 5,000 1,500 500 50 70 1,500 15 150 70 30 50 50,000 300 7,000 20 20 15 200 100 300 10,000 La-ppm s <50 N N N N <50 <50 50 <50 <50 <50 N <50 <50 N N N <50 N N <50 <50 <50 <50 N N <50 N N N N N N <50 50 <50 <50 <50 <50 N 50 <50 <50 N <50 Mo-ppm s N N N N N N 30 15 N N N N N N N N N N N N 15 N N N N N N N N N N N N N N N N N N N N N N N N Nb-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Ni-ppm s 10 10 <10 30 15 15 15 <10 <10 10 15 15 10 20 50 30 20 20 30 30 20 20 20 <10 20 20 20 10 <10 <10 <10 10 10 10 <10 10 10 20 10 10 10 70 30 15 10 Pb-ppm s 30,000 300 3,000 70 10,000 100 500 20 20 30 20 50 50 100 700 30 20 70 <20 30 20 20 15,000 100 >50,000 2,000 10,000 70 3,000 100 30 15,000 500 50 200 20,000 700 1,000 30 30 <20 <20 100 >50,000 7,000 Sb-ppm s 200 N N N N N N N N N N N N N N N N N N N N N 200 N 1,500 <200 N N N N N <200 N N N 1,000 N N N N N N K 300 N Sc-ppm s 10 15 10 30 20 15 15 N 10 15 15 10 <10 10 <10 10 15 <10 1C 15 <10 <10 <10 <1 0 <10 < 10 <1 0 N <10 < 1 0 <10 < 10 < 10 <10 <10 N <10 <10 N N N 7 <10 <10 <10 Sn-pPm s 1,000 20 N N 1,OOC N N <20 N N N N N N 1,000 200 70 N N N N N >2,000 1,000 >2,000 >2,000 >2,000 70 2,000 300 <20 >2,000 >2,000 50 1,500 >2,000 300 100 N <20 30 N N >2,000 >2,000 Sr-ppm s 1,000 1,500 3,000 <200 500 1,000 1,500 <200 700 700 300 1,500 1,500 2,000 1,500 1,500 1,000 1,000 1,000 1,500 1,500 1,500 10,000 N 700 500 300 N N <200 10,000 N 300 500 1,000 1,000 2,OOC 700 N N 300 700 200 1,000 1,000 Table 6, Semiquantitative spectrographic analyses of the nonmagnetic fraction of heavy-mineral concentrates from the U.S. Virgin Islands Continued Fampla 83ST097 83ST098 83SI099 83ST102S 83ST103S 83ST10US 83ST105S 83ST1C6S 83ST108S 83ST109S 83ST110S 83SI1 11S 8USJ001 84SJ002 8USJ003 8HSJOOU 8USJ005 8U5J006 8USJ007 eusJOOB 8USJ009 8USJ010 8USJ01 1 8USJ012 8<4SJ013 8USJ01U 8USJ015 8USJ016 8USJ017 8I4SJ018 8USJ019 8USJ020 8USJ021 8USJ022 8USJ023 8USJ02U 8USJ025 8USJ026 8USJ027 8USJ028 8USJ029 8USJ030 8USJC31 8USJ032 8USJ033 V-ppm E 150 500 150 200 200 200 300 700 150 200 300 150 700 1,000 700 1,000 1,000 700 1,COO 1,000 500 700 300 1,000 500 300 1,000 200 200 300 300 300 500 500 200 200 300 500 100 200 500 1,000 500 200 200 W-ppm s N N N N N N N N N N N N N N N N V V N N N N N N * N N N N N N N N N N N N N N N N N N M K Y-pprn s <20 <20 N 30 50 50 50 200 <20 7P 50 <20 50 50 30 50 50 50 30 50 100 70 70 300 50 70 150 N 70" 50 «i 70 70 50 100 50 50 70 100 30 50 300 7C 50 70 500 Zn-ppm s N N N N N N N N N N N N N N N N N N N N N tf N N N N N N N : ' N N N N N * 10,000 N N N N N N 5,000 N N Zr-ppm s 200 20 <20 70 300 300 70 1,500 2,000 1,500 70 50 700 150 70 70 150 100 70 100 200 300 200 >2,000 1,500 300 700 30 >2,000 1,500 300 2,000 150 150 150 100 100 1,000 100 1,000 150 70 100 700 100 Th-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Table 6. Semiquantitative spectrographic analyses of the nonmagnetic fraction of heavy-mineral concentrates from the U.S. Virgin Islands Continued CO Sample 8aSJ03a 8/4SJ035 easjose 8aSJ037 84SJ038 8aSJ039 easjoao sasjoa 1 8 <4 S J 0 a 2 sasjoas sasjoaa easjoas easjoae sasjoas easjoag sasjoso sasJ05i 8<4SJ053 sasjosa sasjoss easjo56 8aSJ057 8USJ058 8aSJ059 aasj070 easJ07i easJ072 84SJ073 easjo7a easj075 8aSJ076 easj077 8aSJ078 8aSJ079 8aSJ081 84SJ082 8aSJ083 sasjoea sasjoss 8aSJ086 8aSJ087 sasjoss 8aSJ089 sasjogo 8aSJ091 Latitude 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 19 aa 19 19 19 10 19 3 19 15 19 ae 19 50 19 as 19 39 19 32 19 2a 19 2a 19 26 19 39 19 aa 19 35 19 29 20 27 20 29 20 19 20 21 20 7 20 a 19 22 20 39 20 32 20 a3 20 20 20 9 20 5 20 a 20 7 19 a7 20 10 20 50 20 51 20 31 20 28 20 ia 19 58 19 aa 21 17 21 28 21 a5 21 38 Longitude Fe-pct. 6a ea ea ea ea ea ea 6a ea ea ea 614 sa 6 a sa ea ea ea ea ea ea ea ea 6a ea ea ea ea ea ea ea ea ea ea ea ea ea ea ea ea ea ea ea ea ea a2 a2 a2 a2 as H3 a3 a3 as as aa a3 as a5 as as 145 as as as as as as a6 ae ae a5 ae ae ae ae ae ae a? aa aa aa aa aa aa aa a7 a7 ae ag ia 5 23 as 9 a 5 11 20 18 a 50 aa 57 as 30 27 32 3a 36 ai a2 51 as 18 7 ao 22 13' 16.. ' 37 36 ao 27 31 32 27 30 23 23 27 36 2a 31 0 s .7 2.0 2.0 3.0 7.0 5.0 7.0 7.0 7.0 7.0 10.0 5.0 7.0 2.0 7.0 10.0 10.0 7.0 3.0 7.0 7.0 5.0 7.0 5.0 3.0 10.0 5.0 5.0 3.0 7.0 10.0 5.0 7.0 10.0 3.0 7.0 10.0 5.0 5.0 7.0 5.0 10.0 1.0 1.5 1.5 fg-pct . s .20 .70 .70 .30 .70 .50 1.00 .70 .70 .70 .50 .30 .70 .70 1.00 1.00 .70 1.50 1.00 1.00 .70 .50 1.00 1.50 .70 1.50 .70 .70 .50 .70 1.50 1.50 .50 1.50 1.00 1.00 1.50 .70 .70 .70 .50 2.00 .20 1.00 .50 Ca-pct . s .20 .30 .50 2.00 15.00 15.00 15.00 10.00 10.00 10.00 7.00 10.00 10.00 7.00 15.00 15.00 7.00 15.00 7.00 15.00 10.00 10.00 15.00 15.00 10.00 15.00 10.00 20.00 7.00 10.00 15.00 15.00 15.00 10.00 5.00 10.00 15.00 10.00 10.00 10.00 5.00 10.00 3.00 15.00 7.00 Ti-pct. s >2.00 7.00 3.00 2.00 2.00 .50 2.00 1.00 2.00 2.00 >2.00 1.00 >2.00 .20 1.00 .70 2.00 .70 1.00 .70 .30 .30 .70 2.00 .30 .50 1.50 2.00 >2.00 2.00 1.50 2.00 .70 1.00 >2.00 2.00 2.00 .70 2.00 >2.00 2.00 2.00 >2.00 >2.00 >2.00 Mn-ppn s 150 700 1,000 1,000 2,000 2,000 3,000 2,000 2,000 3,000 1,500 1 ,500 1 ,500 700 2,000 2,000 1,500 1,500 1 ,000 2,000 1,500 1 ,500 2,000 1,500 1,500 2,000 1,000 1,000 1 ,500 1 ,500 1,500 1,500 1 ,000 2,000 1,500 2,000 2,000 2,000 2,000 2,000 1,500 2,000 500 2,000 1,500 Ag-ppm As-ppRi Au-ppm s N N N N N N N N N N 3.0 2.0 N N N N N 700.0 5.0 N N N N N N N N N N N N N <1 . 0 N N 10.0 N N N <1.0 N N 3.0 N N s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N s N N N N N N N N N N N N N N N N N N N V N N N N N N N N N N N N N N N N N N N N N N N N N B-ppm s 70 N N 70 30 50 30 50 50 30 70 50 50 20 100 100 70 70 50 70 70 10C 50 70 70 50 70 70 50 70 70 70 70 200 50 20 70 150 70 50 50 30 20 20 20 Ba-ppm Be-ppm s 300 300 70 50 150 100 10,000 >10,000 5,000 150 300 300 200 150 300 300 7,000 500 300 300 300 500 300 5,000 500 200 700 300 70 200 500 150 200 100 200 150 150 150 200 10,000 300 500 150 300 500 s N <2 N N <2 <2 N <2 2 2 N <2 <2 N N N <2 N N N N N N N N v N N N N N N N N N N N <2 <2 <2 N N N N N Table 6. Semiquantitative spectrographic analyses of the nonmagnetic fraction of heavy-mineral concentrates from the U.S. Virgin Islands Continued ?ample 6U5J03U 8*4° J035 8USJ036 8USJ037 8USJ038 8USJ039 94SJOUO 8USJOU1 8USJOU2 8USJOU3 8HSJOU4 8USJOU5 8i\53^Uf> PUSJOU8 8<4SJO<49 8USJ050 8USJ051 8UPJ053 8USJ0514 8USJ055 84FJ056 8<45J^57 8U5J058 8UFJ059 8USJ070 8USJ071 84SJ072 8USJ073 8USJ07U 8USJ075 8USJ076 8USJ077 8USJ078 84SJ079 8USJ081 84SJ082 8USJ083 84SJ08U 8USJ085 8UCJ086 8USJ087 8USJ088 84SJOP9 8 U S J 0 9 0 R4SJ091 Bi-ppm Cd-ppm s N N N N 100 N N N N N N N N N N N B N 300 N N N N N N N 100 <20 N N 100 N 30 N N 70 N N N <20 N N N N N s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N M N N N N N N N N Co-ppm s N N N N <10 N N N N N 00 N N 10 15 15 10 10 15 15 10 10 15 <10 00 20 10 10 ' N <!» 00 N <10 10 N 15 15 N N N N 50 N 15 10 Cr-ppm s 100 70 50 70 70 30 50 50 50 70 70 7C 70 100 200 70 50 200 150 50 70 5C 50 200 150 150 100 100 100 100 100 70 70 70 100 70 150 70 50 50 20 150 50 30 50 Cu-ppm La-ppm Mo-ppm s 150 50 20 <10 700 00 50 50 10 50 15 15 20 30 70 150 200 150 1,000 70 30 30 70 3,000 50 50 700 70 20 100 300 50 5,000 70 15 1,500 1,500 30 20 3,000 50 100 <1 0 20 50 s N <50 N N N N <50 <50 <50 70 50 <50 <50 N N N <50 N <50 N N N N <50 N N N <50 70 <50 <50 N <50 N N <50 N <50 <50 <50 N <50 N <50 <50 s N N N N N N N N N V N V N N N N N V N N N N N N N N N s N N N N N N N N N N N N S N N N N Nh-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Ni-ppm s 00 <10 10 <10 10 10 10 10 10 10 00 <1 0 10 15 20 20 10 15 20 15 10 oo 10 15 00 20 OO 10 10 00 00 oo OG 10 10 10 15 < 10 10 10 00 30 OO 10 oo Pb-ppra s 20 <20 <20 20 1,000 20 100 200 50 300 50 20 50 <20 50 100 1 ,500 200 50,000 100 50 30 30 7,000 20 20 1 ,500 1 ,500 20 100 1 ,500 1 ,000 7,000 50 <20 50,000 70 500 <20 1,500 70 20 <20 100 <20 ?b-ppm Sc-ppm Sn-ppm s N N V N 500 N N N N <200 N N V N N N N N 1 ,000 N N N N N N « 300 N N N N N 500 N * N N N N 300 V N N N N s s OO N N N N N <1C V OO >2,000 OO 50 00 150 OO N 00 50 1C >2,000 OO <20 OO N OC 300 N N 10 700 10 >2,000 OO 30 OO 1,500 OO >2,000 OO 300 OO 50 N N OO N OO 1,500 OO N 10 N OO >2,000 OO >2,000 OO N OO >2,000 1C >2,000 OO 1,000 N >2,000 00 30 N N OO >2,000 OO N OO 1,500 OO N OO >2,000 N 50 15 N N K OO 300 N N Sr-ppm s N N N N 1,000 1,000 1,000 1,000 500 2,000 700 700 700 N 1,000 1,000 700 700 700 1,000 1,000 700 700 1,500 1,000 1,000 700 1,500 2,000 1,000 1,500 1,000 1,000 1,500 <200 70C 1,000 700 700 1,000 500 1,000 N 500 500 Table 6. Semiguantitative spectrographic analyses of the nonmagnetic fraction of heavy-nineral concentrates fron the U.S. Virgin Islands Continued too Sample 8USJ03U 8USJ035 8USJ036 PUSJ037 8USJ038 8USJD39 ausjouo RUSJOU1 8USJOU2 8USJOU3 eusJC'UU PUSJOUS 8USJOU6 eusjoue 8USJD<49 84SJ050 84SJ051 8USJ053 8USJ05U 84SJ055 8USJ056 8USJ057 eusjoss 84SJ059 8USJ070 8USJ071 8USJ072 8USJ073 8USJ07U 8USJ075 8USJ076 8USJ077 8USJ078 8USJ079 8USJ081 845.7082 8USJOR3 8USJ08U easjoss 8USJ086 84SJ087 easJOPS 84SJ089 84SJ090 8aSJ091 V-ppm s 500 100 70 1,000 200 150 300 200 150 200 300 200 300 100 700 1,000 300 FOO 500 700 300 300 500 300 300 700 500 100 300 500 1,500 700 300 700 300 300 700 150 200 300 200 1,500 300 1,000 500 W-ppm s N N N N N N N N N N N N N V N N N N N V N N N N N N N N N N N N N N N N H N N N N N N N N Y-ppm s 20 <20 N 30 70 70 70 70 100 100 100 70 100 N 50 50 50 70 30 50 <20 N 20 50 N 30 20 50 50' 5 Or 50 30 <20 <20 70 70 70 50 50 70 50 70 N 300 100 Zn-ppm s N N N N N N N N N N V N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Zr-ppm s 150 100 70 1,000 150 100 150 100 1,000 70 300 100 500 70 70 70 150 700 1,000 70 70 70 100 300 1,000 70 2,000 100 200 >2,000 >2,000 1,500 2,000 1,000 700 150 300 150 100 150 >2,000 300 20 500 500 Th-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Table 6. Semiquantitative spectrographic analyses of the nonmagnetic fraction of heavy-mineral concentrates from the U.S. Virgin Islands Continued Sample 84SJ092 84SJ093 84SJD94 84SJ095 84SJ096 8USJ097 84SJ098 84SJ099 R4?J1CO 84SJ101 84SJ102 84SJ1G3 84SJ104 84SJ10S 84SJ106 84SJ107 84^.1108 84SJ109 84SJ110 8USJ200 84SJ201 84SJ2f>2 84SJ2G3 84SJ205 84SJ2^6 84SJ207 84SJ601 84SJ605 84SJ606 84SJ60R 84SJ613 84SJ614 84SJ622 84SJ625 84SJ629 84SJ631 84SJ639 84SJ641 84SJ646 84SJ649 8USJ653 84SJ655 84EJ657 81SJ658 64SJ659 Latitude 18 21 41 18 21 143 18 22 9 18 21 55 18 22 18 18 22 13 18 22 21 18 22 3 18 21 44 18 20 58 18 20 49 18 20 18 18 20 44 18 21 I4& 18 18 59 18 18 140 18 18 22 18 19 8 18 19 143 18 20 46 18 20 47 18 20 UO 18 20 35 18 20 22 18 20 114 18 19 38 18 19 43 18 19 47 18 21 114 18 21 27 18 21 57 18 21 35 18 20 19 18 20 3 18 19 38 18 19 10 18 20 1414 18 19 12 18 20 18 18 21 17 18 21 114 18 19 1414 18 19 50 18 19 1414 18 19 40 Longitude Fe-pct. 614 149 16 614 49 31 614 148 25 614 148 12 614 45 26 614 44 55 614 1414 20 614 143 5 614 142 32 64 41 11 64 41 27 64 40 6 64 40 10 64 41 43 64 43 15 64 42 36 64 42 13 64 41 21 64 39 5 64 44 59 64 44 56 64 44 52 64 44 59 64 44 48 64 44 52 64 44 56 64 46 23 64 45 55 64 45 13' 64 44 54 r, - 64 43 12 64 44 16 64 47 36 64 47 1 64 47 39 64 47 23 64 45 57 64 45 33 64 40 29 64 41 13 64 42 22 64 46 55 64 47 47 64 46 51 64 46 37 s 3.0 5.0 5.0 2.0 2.0 7.0 5.0 2.0 2.0 10.0 10.0 30.0 15.0 15.0 7.0 10.0 7.0 1.0 1.5 7.0 10.0 7.0 7.0 5.0 7.0 3.0 5.0 5.0 5.0 7.0 3.0 5.0 5.0 5.0 5.0 3.0 5.0 7.0 5.0 20.0 3.0 3.0 1.5 5.0 3.0 Wg-pct. s 1.50 1.50 15.00 .70 1.00 1.00 1.00 1.50 .70 5. CO 3.00 5.00 5.00 5.00 1.50 1.50 1.50 .20 .10 .70 .70 .50 1.50 .50 .70 .50 .70 .50 1.50 1.50 1.50 1.50 1.00 .70 .50 <.05 .70 .70 1.00 .50 2.00 .70 .50 1.00 .70 Ca-pct. s 20.00 20.00 15.00 5.00 15.00 15.00 10.00 20.00 7.00 15.00 15.00 7.00 10.00 15.00 15.00 10.00 10.00 .70 2.00 15.00 15.00 10.00 15.00 7.00 7.00 7.00 7.00 7.00 7.00 10.00 20.00 15.00 7.00 5.00 7.00 .10 7.00 1.50 10.00 .70 7.00 7.00 7.00 7.00 7.00 Ti-pct. s 2.00 2.00 2.00 .50 >2.00 1 .50 >2.00 >2.00 >2.00 2.00 >2.00 >2.00 >2.00 1.00 .50 1.00 .70 >2.00 >2.00 .70 2.00 1.00 .50 1.00 .70 1.00 .10 .70 .30 1.00 .70 .70 .50 .15 .50 .30 .15 >2.00 2.00 >2.00 .50 . 15 .07 . 15 .15 Hn-ppm s 1,000 2,000 1,500 700 1,500 2,000 1,000 1,500 1,500 3,000 3,000 3,000 5,000 5,000 2,000 1,500 2,000 300 200 1,500 2,000 2,000 1,500 1,500 1,500 1,500 1,000 1,500 1,000 1,500 700 1,500 1,000 1,500 1,500 50 1,000 700 2,000 7,000 2,000 1,000 700 700 700 Ag-ppm As-ppm Ru-ppm s 10.0 N 10.0 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 5.0 N N N N N N N K N s N N 500 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N V N S N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N B-ppm s 20 70 30 20 30 500 3C 50 30 20 20 50 30 100 70 50 70 N <2C 30 70 7C 70 70 70 70 70 70 70 50 70 50 50 N 2C N 100 30 <20 N N 70 50 70 100 Ba-ppm Be-ppm s 2,000 300 >10,000 1,000 1,500 1,500 700 5,000 500 50 70 700 300 200 100 300 300 70 <50 200 100 100 1,000 150 200 70 150 150 200 1,500 1,000 200 <50 150 <50 >10,000 700 1,500 500 3,000 500 50 <50 70 500 s N N N 2 N 2 N <2 N N N <2 N N N N N N N N N <2 N <2 <2 <2 N <2 N N N N N N N N N N N N N N N N N Table 6. Semiquantitative spectrographic analyses of the nonmagnetic fraction of heavy-aineral concentrates fro» the U.S. Virgin Islands Continued Sample CO to 814SJ093 84SJ09U 8USJ095 814SJ096 814SJ097 814SJ09B 8<4SJ099 84SJ100 814SJ101 8USJ1P2 BUS J 103 PUSJ10U 8USJ105 8USJ106 8USJ107 8USJ108 8USJ109 8USJ11C 8USJ2GO 8USJ2M 8USJ202 8USJ203 8USJ205 8USJ206 8USJ207 8U5J601 8USJ605 8USJ606 8USJ608 8USJ613 8UFJ61U 8USJ622 8USJ625 8USJ629 8USJ631 8USJ639 8USJ6U1 8USJ6146 8USJ653 8USJ655 8<lSJ657 8<»?J658 8USJ659 Bi-ppm s N N N N N N N N N N N N N N N N N N N N N N 30 N N N N N N N N N N N N 20 N N N N 30 N N N N Cd-ppia s N N N N N N N N N N N N N N N N V N N N N N N N N V N N N N N N N N N V N N N N N N N N N CO-PPB S N 10 N <10 10 10 <10 M N 20 20 70 20 20 10 10 20 N N <10 <10 N <10 N N N <10 N ' 15 >, 15 <10 10 <10 20 <10 N <10 10 20 100 15 15 N 10 <10 Cr-ppm Cu-ppm s 50 50 1,000 30 30 70 70 200 100 500 500 500 500 500 100 150 70 50 70 50 70 50 100 50 50 70 70 <20 30 20 500 70 50 20 50 50 30 50 150 <20 70 30 <20 100 70 s 50 20 70 50 30 500 15 10 100 50 50 300 200 100 50 50 30 <10 N 70 15 <10 700 <10 15 20 30 <10 70 70 70 70 70 70 70 150 20 70 700 50 70 70 50 70 20 La-ppa s <50 N N N <50 50 50 70 <50 N <50 N N N N N N N N <50 <50 <50 N N <50 <50 N N N N N N N N N N N N <50 <50 N N <50 N N Ho-ppm s N N N N N N N N N N N N N N N N N N N N N N N M N N N N N N N N N N N 50 N 100 N N N N N N N Nb-ppm s N N N N N N N V N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Ni-ppm s <10 10 <10 <10 <10 10 <10 <10 10 20 30 100 100 30 20 20 20 10 <10 10 10 <10 10 <10 10 <10 <10 <10 <10 <10 30 20 20 15 10 <10 <10 15 20 20 20 15 <10 15 15 Pb-ppm s 20,000 700 10,000 20 30 30 20 20 1,000 <20 100 <20 20 20 20 20 <20 <20 50 1,500 30 50 700 20 20 70 100 20 300 <20 1,500 20 20 20 <20 300 N <20 10,000 50 100 <20 <20 20 <20 Sb-ppm s N N N N N N N N N N N N N N N N N N N N N N 1,000 » N N R N N N N N N N N N N N N N N N N N N Sc-ppm s <10 N <10 N N N 10 N N 10 <10 10 10 <10 00 <10 N N 10 <10 10 <10 <10 <10 <10 N 15 20 30 20 15 15 10 15 20 <10 15 30 50 70 30 10 10 20 10 Sn-pp» s 1 ,000 50 N N N N <20 300 >2,000 50 N N N N N N N N N >2,000 N N >2,000 300 100 1 ,500 N N 2,000 200 300 N N N N N N N >2,000 30 >2,000 30 N N N Sr-ppm s 2,000 700 3,000 1,000 500 1,000 200 200 300 700 700 500 1,000 500 1,000 700 300 N N 700 1,500 700 700 700 700 300 700 700 700 700 1,000 700 1,000 1,000 700 7,000 700 N 2,000 N 300 1,000 700 1,000 1,000 to CO Table 6. Semiquantitative spectrographic analyses of the nonmagnetic fraction of heavy-mineral concentrates from the U.S. Virgin Islands Continued Sample V-ppm W-ppm Y-ppm Zn-ppm Zr-ppm Th-ppm s s s s s s 8USJ092 8HSJ093 8U5J09U 8USJ095 6USJ096 8USJ097 8USJ098 8USJ999 PUSJ100 8USJ101 84SJ1C? RUSJ103 8USJ10U 8USJ135 8USJ106 8USJ107 PUS J 108 BUSJ1C9 8"4SJ110 8USJ200 8USJ201 8USJ202 8USJ203 8USJ2C5 8USJ206 8USJ207 8USJ6C1 8USJ605 8USJ606 8USJ608 8USJ613 8USJ61U 8USJ622 8USJ625 RUSJ629 8USJ631 8USJ639 eusjem 8"SJ6U6 8USJ6U9 8MSJ653 8U?J655 8USJ6b7 8USJ658 8USJ6b9 700 300 3, COO 150 500 300 c co 1,500 500 1,000 1,000 1,000 1 ,000 1 ,000 700 700 500 150 300 500 500 200 500 150 300 200 300 70 500 500 500 500 500 500 700 70 ?CO 300 300 700 300 500 150 ^00 300 N N N N N N N N N1 N N N N N N V N N N N N N H N N N N N N N N N V N N N N N N V N N N N N 30 20 70 N 150 50 300 300 200 50 50 70 70 50 30 30 <20 50 1,500 20 100 50 <20 50 50 50 N 100 <20 <2Q - 30 <20 N <20 <2C N N 150 200 500 <20 N N N N N N 700 N N N N N N N N N V N N N N N N N N N N N N N N N N N N N N N N N V N N N N N N N N 700 100 150 200 >2,000 700 >2,000 2,000 300 150 200 100 200 30 70 100 70 500 >2,000 200 150 150 150 150 100 500 <20 150 50 30 70 70 70 70 70 50 50 200 70 100 30 20 20 50 30 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Table 6. Semiquantitative spectrographic analyses of the nonmagnetic fraction of heavy-aineral concentrates froa the U.S. Virgin Islands--Continued ro Sample 84SJ660 84SJ665 8USJ668 8457670 84SJ673 6MSJ676 84SJ6R4 84SJ690 8HSJR96 84SJ699 84SJ716 8MSJ723 84SJ725 R4SJ729 8USJ733 84SJ735 84SJ736 84SJ738 84SJ739 84SJ739 84SJ7141 84SJ742 84SJ743 84SJ746 84S~001 84SC002 84SC003 84SC004 84SC005 84SC006 84SC007 84SC008 84SC009 84SCD10 845:011 84SC012 84SC013 84SC014 84SC015 84S~016 P4SC017 P4SC018 84FC019 8USC°29 R4F;3021 Latitude 18 19 47 18 21 25 18 20 59 18 20 49 18 20 29 18 20 11 18 20 8 ' 18 20 7 18 20 14 18 19 20 18 20 33 18 20 42 18 20 40 18 20 34 18 20 40 18 22 14 18 20 50 18 21 31 18 21 38 18 21 38 18 21 13 18 21 21 18 21 22 18 21 7 17 46 1 17 46 17 17 46 8 17 45 54 17 45 46 17 45 11 17 45 18 17 45 1 17 46 2 17 46 17 17 46 47 17 46 39 17 46 51 17 46 23 17 46 27 17 46 33 17 46 34 17 46 39 17 45 39 17 45 40 17 45 3R Longitude Fe-pct. 64 46 37 64 43 27 64 44 35 64 44 21 64 44 2 64 43 39 64 43 33 64 43 50 64 42 43 64 42 3 64 44 45 64 45 15 64 45 35 64 45 33 64 45 25 64 44 55 64 44 35 64 44 0 64 44 7 64 44 9 64 44 15 64 44 15 64 44 8 64 44 38 64 49 21 fi4 48 37 64 49 7 64 49 44 64 50 1 64 49 47' 64 49 39 64 49 19 64 45 49 64 45 40 64 45 43 64 46 10 64 46 35 64 47 30 64 47 22 64 47 20 64 48 7 54 47 39 64 46 22 64 46 55 64 46 59 s 3.0 7.0 3.0 3.0 7.0 .7 5.0 7.0 5.0 3.0 3.0 7.0 5.0 7.0 7.0 7.0 10.0 7.0 7.0 7.0 7.0 10.0 7.0 10.0 1.5 2.0 5.0 7.0 1.5 5.0 1.5 2.0 5.0 7.0 7.0 7.0 5.0 7.0 5.0 3.0 7.0 5.0 7.0 7.0 3.0 Kg-pct . s .70 1 .00 .70 1.00 .30 <.05 .05 .30 .50 .70 .70 1 .00 .70 .70 .70 .70 1.50 1.00 .50 .50 1.50 2.00 2.00 1.50 .30 .50 1.50 1.50 .50 .70 .50 1.00 .70 1.50 1.00 1.00 1.50 1.50 1.00 1.00 1.00 .70 1 .50 1.50 .30 Ca-pct . s 7.00 10.00 10.00 3.00 7.00 .20 .50 7.00 7.00 3.00 7.00 7.00 7.00 7.00 7.00 7.00 7.00 7.00 3.00 3.00 7.00 7.00 7.00 7.00 10.00 15.00 10.00 20.00 15.00 10.00 50.00 10.00 10.00 10.00 10.00 10.00 7.00 7.00 7.00 7.00 7.00 7.00 10.00 10.00 7.00 Ti-pct. s .15 .30 1.50 2.00 .70 .20 .30 .20 .70 >2.00 .30 1.50 .20 .50 .50 2.00 1.50 .30 1.50 1.50 1.50 1.00 1.50 2.00 . 15 .50 .50 .70 . 15 .50 .50 .15 2.00 2. no .30 .30 .50 1.00 .20 .30 .30 .30 .70 .50 .70 Mn-ppm s 700 1,500 700 5,000 1,000 2D 200 1,500 1,500 700 1,000 1,000 1,000 1,000 1,000 2,000 2,000 1,500 700 700 1,500 1,500 2,000 2,000 300 700 1,000 2,000 500 1,000 700 700 700 700 1,500 1,500 1 ,500 1 ,500 1,000 1,500 1 ,000 1,000 1 ,000 1,500 700 Ag-ppm As-ppm Au-ppm s N N N <1 . 0 N 15.0 30.0 N N N N N <1 . 0 N N N N N 10.0 10.0 N N N N N N N N N N N N N N N N N N N N N N N N N S N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N J N N N N N N N N s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N V N B-ppm s 70 50 50 70 70 70 N 70 150 30 70 100 3C 70 70 50 50 30 70 70 100 70 100 70 20 30 50 50 20 50 <20 30 70 70 50 70 50 50 50 50 100 50 70 50 70 Pa-ppm Re-ppm s 300 50 100 >10,000 1,500 >10,000 >10,000 3,000 700 200 100 500 150 300 50 700 300 <50 >10,000 >10,000 700 200 50 500 700 <50 50 150 500 150 200 500 300 150 50 <50 50 70 150 100 <5n 3,000 200 150 >10,000 s N N N N N N N <2 N N N N N N N N N N N N N N N N <2 <2 N N <2 N N <2 N N N N N N N N N N N N N Table 6. Semiguantitative spectrographic analyses of the nonmagnetic fraction of heavy-mineral concentrates from the U.S. Virgin Islands Continued to CJ1 Sample 8«4SJ660 814SJ665 BUSJ668 8149J670 8USJ673 8USJ676 814SJ696 8HSJ716 8USJ723 814SJ725 814SJ729 8USJ733 8<i5J735 814SJ736 8USJ738 8USJ739 8USJ739 84SJ7<41 8USJ7142 8145J7U3 8I4SJ7U6 8«4SC001 8USC002 814SC003 814SC006 814SC007 814 C 2008 8«4SC009 8USC010 8I4SCC12 8USCOH e^com 8 14 r " n 1 5 8USZ016 8USC017 8i4SC!018 814 SCO 19 814SC020 8USC?021 pm N N N N N N 30 N N N N N N N N N N 20 30 30 N N N N N N N N N N N N N N N N N N N N N N N N N Cd-ppm s n N N N N N N N N N V N N N N N N N N N N N N N N N N N N N N N N N N N N N V N N N N *r N Co-ppm s <10 20 N 30 K N N N N N <10 20 15 15 15 15 20 20 <10 <10 20 20 20 30 N N 20 20 1 N 20 N 15 15 20 20 20 15 10 15 <10 15 15 15 20 N Cr-ppm s 50 70 70 50 20 <20 20 20 30 50 50 50 50 100 70 70 500 500 <20 <20 150 300 500 1,000 20 50 100 70 20 30 <20 100 200 500 50 100 200 200 200 200 150 50 500 150 50 Cu-ppm s 50 100 50 70 1 ,500 70 500 20 100 1,500 50 50 70 70 70 70 100 100 300 300 50 70 70 70 30 15 70 70 30 20 30 50 30 20 30 70 20 70 15 50 30 20 30 50 20 La-ppm s N N <50 N N <50 N N N N N <50 N N N N N N N N N N N <50 70 <50 N <50 700 N 1,000 50 100 70 <50 N <50 <50 N <50 N N 50 N <50 Mo-ppm s N N N N N N 150 N N N N N N N N N N N 100 100 N N N N N N N N N N N N N N N N N N N N N N N N N Nb-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N <50 <50 N N N N N N N N N V N Ni -ppm s 15 20 15 15 10 <10 <10 <10 <10 <10 15 15 10 15 10 <10 20 15 10 10 20 70 100 30 <10 <10 20 15 N 10 N 15 <10 30 10 15 15 15 15 15 15 10 20 20 N Pb-ppm s 100 <20 <20 300 50 150 300 50 70 1,000 <20 30 20 20 20 100 300 1 ,000 1,500 1,500 50 20 <20 70 100 <20 50 <20 <20 <20 <20 <20 100 200 N 200 20 300 20 70 20 100 300 150 30 Sb-ppn s N N N N V N N N N N N N N N K N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Sc-ppm s 15 50 20 15 15 <10 <10 10 20 20 20 70 30 50 50 15 20 20 15 15 30 50 50 50 N 10 30 30 N 20 N 10 30 50 50 30 30 50 20 20 30 20 50 30 20 Sn-ppm s 300 N N N N N N N N 150 K N N N N N 1,500 >2,000 70 70 N N N 300 N 70 . 150 N 50 N N N N K N 150 N >2,000 N 300 200 20 300 1,000 300 Sr-ppm s 1,000 1,000 700 1,500 700 1,000 2,000 700 1,000 300 700 1,000 700 1,000 1,000 200 1,000 500 700 700 700 700 700 1,500 1,000 <200 1,500 700 1,000 1,500 1,000 1,000 1,500 1,000 2,000 2,000 1,500 1,500 1,500 1,000 1,500 1,000 1,500 1,500 2,000 Table 6. Semiquantitative spectrographic analyses of the nonmagnetic fraction of heavy-mineral concentrates from the U.S. Virgin Islands Continued CO Sample 8USJ66 1"' 84SJ665 8HSJ668 84SJ670 8USJ673 8 t* c J676 8USJ684 84SJ69? 8U5J696 8'ISJ699 84SJ716 8HSJ723 8USJ725 8HSJ729 84SJ733 8USJ735 84SJ736 8USJ738 8USJ739 8<4SJ73« 8USJ741 8USJ742 BUSJ7U3 84SJ746 B4E-C001 84SC002 84SC003 84SCCC4 84SC005 84SC006 8USC007 8USC008 8USC009 84SC010 8USC011 8USZ012 8USC013 S4SC014 84S:015 84SC016 8US3017 8USC018 84SC019 8US^020 8USC021 V-ppm s 300 700 200 150 150 70 150 300 200 200 300 700 500 700 700 300 500 500 300 300 500 700 500 500 70 200 500 500 100 500 100 150 500 500 300 500 200 500 300 300 500 300 500 500 300 H-ppm s N N >J V N N V N N N N N K N N N N N N N V N «J N N N N N N N N N N N N N N N N V N N N N N Y-ppm s N 20 200 30 100 30 <20 30 50 700 <20 50 <20 20 30 70 50 <20 20 20 50 20 50 100 100 <20 <20 30 300 30. ' 500 50 200 150 <20 20 <20 <20 <20 <20 20 <20 70 N 50 Zn-ppm s N N N N N N N N 500 N N N N N N N N N <500 <500 N <500 N N N N N N N N N N N N N N H N N N N N N V N Zr-ppm s 70 30 2C 70 100 20 70 70 70 200 <20 100 70 300 70 1,000 70 50 70 70 70 50 70 150 1,500 200 50 100 >2,000 1,000 >2,000 70 >2,000 >2,000 100 50 70 100 70 70 70 70 >2,000 70 >2,000 Th-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Table 6. Semiguantitative spectrographic analyses of the nonmagnetic fraction of heavy-mineral concentrates from the U.S. Virgin Islands Continued DO Sample 84SC022 84SC023 84SC024 84SC025 84S3026 84SC028 84SC029 84ST029 84SC030 84SC031 84SC033 P4FC040 84SC041 84SC042 84SC043 84SC044 84SZ045 84SC046 84SC047 84SC048 84SC049 84SC050 P4RC051 84SC052 84SC053 84SC054 84^055 84SC056 84SC057 843C058 84SC059 84SC060 84SC061 84SC062 84SC063 84FC064 84SC065 84SC066 84SC067 84SC068 84SC069 P4SC070 84SC!071 84SC072 84SC 148 Latitude 17 45 37 17 45 50 17 44 48 17 45 54 17 44 1 17 44 59 17 45 16 17 44 17 17 44 23 17 44 50 17 45 10 17 45 47 17 45 46 17 46 14 17 45 50 17 45 2 17 44 28 17 44 49 17 44 53 17 45 0 17 45 3 17 45 0 17 43 47 17 43 50 17 43 53 17 44 21 17 44 24 17 44 29 17 44 5 17 44 26 17 44 32 17 44 21 17 44 7 17 44 3 17 43 26 17 42 43 17 42 55 17 42 51 17 43 4 17 43 4 17 43 6 17 43 55 17 45 34 17 46 6 17 45 38 Longitude Fe-pct. 64 47 42 64 47 57 64 48 54 64 46 7 64 48 55 64 47 37 64 47 16 64 48 26 64 49 0 64 48 35 64 48 37 64 52 20 64 52 23 64 52 28 64 53 4 64 53 28 64 53 2 64 52 36 64 52 6 64 52 8 64 51 42 64 51 43 64 52 38 64 51 59 64 51 51 64 51 41 64 51 38 64 51 40 64 51 24' 64 51 1 2 r ' 64 50 53 64 50 19 64 50 2 64 49 38 64 52 0 64 52 0 64 51 38 64 51 4 64 51 12 64 50 40 64 49 58 64 49 21 64 45 50 64 45 24 64 48 50 s 5.0 5.0 1.0 5.0 5.0 5.0 5.0 5.0 7.0 2.0 5.0 5.0 5.0 3.0 3.0 7.0 2.0 2.0 2.0 3.0 3.0 3.0 2.0 3.0 5.0 2.0 3.0 3.0 5.0 5.0 5.0 5.0 7.0 5.0 5.0 5.0 5.0 7.0 3.0 5.0 5.0 7.0 3.0 3.0 2.0 Kg-pct . s .70 2.00 .70 1.50 1.00 .70 1.50 1 .50 1 .50 .70 1.50 .70 .70 1.00 .70 1.50 .70 .50 .50 .50 .50 .50 .50 .50 .70 .50 .50 .70 .70 .70 .70 1.00 .70 .70 1 .00 1.00 5.00 1.50 1.50 .70 1.00 .50 .30 .30 2.00 Ca-pct. s 10.00 10.00 3.00 10.00 20.00 15.00 15.00 15.00 15.00 10.00 20.00 7.00 7.00 7.00 7.00 7.00 7.00 10.00 10.00 5.00 7.00 7.00 7.00 5.00 7.00 7.00 7.00 7.00 7.00 7.00 7.00 7.00 7.00 7.00 7.00 7.00 15.00 7.00 7.00 7.00 7.00 7.00 10.00 10.00 10.00 Ti-pct. s .50 .70 1.50 .50 1.50 >2.00 1.50 1.50 .50 1.00 2.00 .50 .70 .70 >2.00 >2.00 1.00 2.00 .50 .50 .70 .50 >2.00 >2.no 1.00 .50 .30 . ^0 .50 .50 .50 .50 .70 .70 .50 1.50 2.00 .70 .70 .30 .50 .50 >2.00 >2.f)0 . 15 Wn-ppm s 1,000 1 ,000 500 1,000 1,500 1 ,000 1,000 1 ,000 1 ,500 500 1 ,000 1 ,000 1,000 1,000 700 1 ,000 700 1,000 1 ,000 700 700 1 ,000 700 700 1,000 1 ,000 1 ,000 1,000 1,000 1 ,000 1 ,000 1 ,000 1,500 1 ,500 1,500 1,000 700 700 1,000 1 ,000 1 ,000 1,000 700 1 ,000 1,000 Ag-ppm fts-ppm Au-ppm s 3.0 N N N N v, N N N N N N N N <1.0 N 100.0 N 200.0 7.0 N N N 1.5 N N N <1 . 0 N N N N N N N N N N N N N N N N N s N N N N N N N N N N N V N N N N N N N N N N N N N N N N N N V N N N N N N fj N N N N N N N s N N V N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N B-ppm s 50 50 50 1CO 70 70 100 100 70 70 70 70 50 70 300 150 30 70 50 50 50 50 100 70 70 70 70 70 100 70 50 30 50 50 100 70 70 70 100 100 100 50 30 70 20 Ba-ppm Be-pt s 300 500 1,000 7G 700 5,000 200 200 150 500 200 300 50 5PO >10,000 2,000 2,000 100 300 >10,000 300 50 300 150 100 150 50 <50 150 150 100 70 150 200 200 300 5,000 150 100 700 200 5,000 300 500 300 s N N N N N N N N N <2 N N N <2 <2 <2 <2 <2 <2 N N N N N N N N N N N N N N N N N N N N N N N N N N Table 6. Semiquantitative spectrographic analyses of the nonmagnetic fraction of heavy-mineral concentrates froa the U.S. Virgin Islands--Continued Sample 8<*?c:022 84SC023 8H5Z02U 8USC025 8US"C26 84SCT028 8USC029 84SC029 8USC030 8USC031 8USC033 8USCOUO 8<*SCOU1 8USCOU2 8USC043 euscrouu a^S"OU5 84SCOU6 8US20U7 eusconfl 84S3D49 8UF:C050 84SC051 RUSC052 8a<5co53 84SC05U 8US"055 84SC056 8USC057 8USC058 8USC359 PUSC060 8USC061 8<^C:062 8USC063 enscoeu PUSC065 8USC066 eas2067 BUSZOee 84SC069 84SC:070 8U C< C071 8USC072 enscMue Bi-ppm Cd-ppm s N 1 ,000 N N N N N N N N N N N N N N N N 30 50 N N N 30 N <20 N N N N N N N N N <20 N 30 N N N N N N N s N N N N N N N N N V N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Co-ppm s 20 20 15 15 10 10 15 15 15 <10 15 10 <10 10 <10 30 <10 N <10 10 <10 N <10 <10 N N <10 <10 ' 10 c.ro <10 15 15 15 15 10 15 30 10 10 15 15 N N <10 Cr-ppm s 200 1,500 70 200 150 300 500 500 150 70 500 50 50 300 300 1,500 300 100 50 70 30 30 100 100 50 20 20 <20 <20 30 50 70 70 70 150 150 2,000 300 300 70 70 30 20 50 70 Cu-ppm La-ppm s 2,000 700 20 500 70 30 300 300 500 100 30 50 50 15 5,000 30 30 50 500 10,000 200 15 70 70 20 50 50 300 70 50 20 30 30 50 70 100 1,000 3,000 30 2,000 50 50 20 10 70 s <50 <50 <50 <50 100 70 50 50 <50 70 500 <50 50 50 70 70 50 50 50 N <50 <50 50 50 50 50 <50 <50 <50 50 <50 N <50 <50 <50 <50 70 50 50 <50 <50 N 200 300 <50 Wo-ppm s N S N V V N N N N N N N N N N N N N N N N N N N N N N N N N N 10 N 10 N N N N N N N N N N N Nb-ppm s N N N N N <50 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N V N N N N <50 <50 N Ni -ppm s 15 70 15 15 15 30 30 30 15 20 50 15 15 20 100 300 30 15 15 30 10 <10 20 10 15 10 15 20 15 <10 10 30 15 30 15 15 150 50 30 <10 10 50 <10 N 10 Pb-ppm Sb-ppm s 2,000 2,000 20 5,000 300 200 1 ,000 1,000 2,000 1,500 50 150 70 30 10,000 500 >50,000 300 >50,000 53,000 500 70 1 ,000 2,000 50 1 ,500 200 2,000 200 2,000 200 50 20 1,000 <20 300 5,000 3,000 30,000 5,000 300 1 ,500 300 200 N s N N N N <200 N N N N N N N N N 300 N 700 N 700 500 N N <200 <200 N N N <200 N <200 K V N N N N N 500 V N N N N N N Rc-ppm s 30 70 15 30 30 30 30 30 30 15 50 30 30 50 50 70 15 70 15 15 15 10 100 100 30 15 15 15 20 20 15 20 30 30 30 30 100 20 70 15 20 15 20 15 15 Sn -ppm s >2,000 >2,000 N 30 2,000 2,000 500 500 >2,000 >2,000 100 1 ,500 300 N >2,000 >2,000 >2,000 >2,000 >2,000 >2,000 1,500 200 2,000 >2,000 100 >2,000 1,500 >2,000 1,500 >2,000 50 500 100 700 N >2,000 700 >2,000 1,000 >2,000 2,000 300 2,000 500 N Sr-ppm s 1,000 700 1,000 1,000 700 730 700 700 700 700 700 700 1,000 700 1,500 700 700 2,000 3,000 1,500 700 730 1,000 1,500 1,000 2,000 700 700 1,000 1,000 700 700 1,000 1,000 1,000 700 1,000 1,000 700 1,000 1,000 700 700 700 500 Table 6. Semiguantitative spectrographic analyses of the nonmagnetic fraction of heavy-nineral concentrates fron the U.S. Virgin Islands Continued CO Sample 8USC022 8US3023 8USC02«4 8USC025 8USC026 8USC028 8USC029 8U5C029 8USC030 8USC031 8«4Sr033 8USCOUO auscom 8USCOU2 8USCOU3 8USCOUU 8USCOU5 8USCOU6 8US~OU7 8USCOU8 8USZOU9 8USC050 814SC051 8US3052 8US~053 8«4S:05U 8USC055 8USC056 8USC057 8USC058 8US3059 8USC060 BUSC061 8USC062 8USC063 8US306U 8US:065 8USC066 8USZD67 8USC068 8USC069 8US^070 8USC071 8USC072 8USC1<48 V-ppm s 300 300 70 300 300 soo 500 500 500 150 300 300 200 300 300 500 200 200 150 200 200 150 500 500 500 200 300 300 300 300 200 300 ^00 500 300 300 500 300 200 200 300 150 300 500 200 W-ppm s N N N N N N N N N N N N N N y N N N V N N N N N N N N N N N N N N N N N N N N N N N N N M Y-ppm s 30 30 N 30 200 200 50 50 20 70 500 <20 <20 50 100 70 30 70 50 30 30 20 70 100 30 <20 <20 <20 20 3 Or 30 20 3C 30 30 50 150 50 150 20 20 20 300 500 5C Zn-ppm s N N N 700 N N N N N N N N N N N N N N K 2,000 N N N N N N N H V N N tf N N N N N N N N N N N N N Zr-ppm s 2,000 >2,000 500 500 >2,000 >2,000 300 300 300 >2,000 >2,000 70 70 100 >2,000 >2,000 50 50 700 300 200 2,000 1,500 1,000 1,000 300 300 150 500 1,500 70 50 70 100 70 >2,000 >2,000 >2,000 >2,000 2,000 70 500 >2,000 >2,000 20 Th-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Table 6. Semiquantitative spectrographic analyses of the nonmagnetic fraction of heavy-aiineral concentrates froai the U.S. Virgin Islands Continued S a .11 p 1 e eusci5u 8USC156 8UST200 8«*SC:201 8USC202 BH5C2Q3 8USC20U 8US~205 8USC206 8USC207 8USC208 8USC209 8USC210 8HSC212 8USC213 8USC21U 8UFC215 8USC216 8USC218 8USCT219 8USC220 8US::221 8USC222 84SC223 8USC22U 8USC225 8USC226 8US"227 8USCJ229 8'iSC231 8USC233 8URC23U 8USC235 8USC236 8USC239 84S"2UO eUSC^UI 8USC2U1 8USC2U2 8USC2U3 8USC2UU 8USC2U5 8USC2U6 8USC2U7 8USC2U8 Latitudp 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 HI 26 1*7 12 U5 20 (45 31 US 36 US 314 (45 38 U5 18 U5 13 (4U 148 US 12 145 0 145 1 UU 36 1414 17 1414 6 UU 1 US U1 45 1 U5 2(4 U5 5 UU 56 1414 57 UU 57 U5 1U U14 33 UU 13 UU 20 1414 10 14J4 12 UU 50 UU 148 145 3 145 6 U3 59 1414 5 1414 5 143 10 U3 13 U3 22 U3 8 U3 (46 1414 37 UU 30 UU 314 Longitude Fe-pct. 614 614 6U 6U 6«* 6<4 614 6U 6U 614 6U 614 614 64 614 6U 6U 6K 6U 6U 6U 6U 61* 61* 614 6U 614 614 6U 6U 6U 6U 6U 6U 614 6U 614 614 614 6U 614 614 614 6U 6U 37 37 3U 3U 34 3U 3U 35 35 36 3U 3U 3U 36 37 37 37 39 38 37 37 37 37 36 36 38 38 36 3R 39 38 38 39 UO U1 141 1*1 <*1 UO 1*1 1*1 UO UO UO UO 32 10 6 22 31 39 U8 1 33 25 20 35 53 37 7 2U 38 12 17 38 UO 33 15 U6 23 59 39 56 03, ' 53 51 3 U 30 17 19 27 U2 U2 1U 10 29 53 U7 s 1.5 3.0 3.0 5.0 7.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 3.0 3.0 3.0 3.0 3.0 5.0 5.0 3.0 3.0 3.0 5.0 5.0 3.0 3.0 2.0 3.0 3.0 5.0 5.0 5.0 7.0 5.0 5.0 3.D 5.0 5.0 7.0 5.0 Mg-pct . s .50 7.00 5.00 1.50 1.50 5.00 .70 2.00 1.00 1.00 5.00 5.00 3.00 1.00 .70 .70 .70 .50 .50 .50 .50 .50 .50 1.50 .30 .50 1.00 .70 .70 .70 .50 .30 .70 .70 .70 .70 .70 .70 .70 .70 .50 .70 1.00 .50 .70 Ca-pct. s 20.00 15.00 15.00 7.00 5.00 10.00 7.00 7.00 5.00 7.00 10.00 10.00 7.00 7.00 7.00 7.00 7.00 10.00 7.00 7.00 7.00 7.00 7.00 7.00 7.00 10.00 10.00 7.00 7.00 7.00 10.00 7.00 10.00 10.00 10.00 15.00 15.00 10.00 7.00 7.00 7.00 7.00 15.00 10.00 10.00 Ti-pct. s .70 .30 .70 .50 .30 1.00 .30 .70 .70 .30 1.00 .70 1.00 1.00 .70 .70 .20 1.00 2.00 .50 1.50 .50 .50 2.00 .50 .70 1.50 .50 1.50 2.00 .70 .70 .50 1.00 1.00 1.50 1.50 1.00 1.00 1.50 .70 .70 1.50 .70 1.50 Mn-ppm s 500 700 1/000 1,500 1 ,500 1,000 1,500 1,500 1,000 1,500 1,500 1,000 1 ,000 1,500 1,000 1 ,000 1,500 700 700 1,500 1,000 1,000 1,000 1,000 1 ,500 1,000 1,000 1,000 700 700 1 ,500 1,000 1,000 1 ,000 1 ,500 2,000 2,000 1,000 1,000 1,500 1,500 1 ,000 1 ,000 1,500 1,500 Ag-ppir As-ppm Au-ppn s N N N N N <1.0 N N 7.0 N N N N N N N N <1.0 N N N N N N N N M N 1.0 N N 5,000.0 3.0 S N N N N N N N N N N N s N N W N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N B-ppHi s 70 <20 200 1 ,000 1,000 1 ,000 50 300 100 100 300 150 70 1CO 150 150 50 30 100 70 100 100 70 100 70 100 100 150 70 70 70 100 70 70 200 200 200 150 100 150 150 70 100 70 100 Ba-ppm Be-pt s 5,000 7,000 10,000 1,500 10,000 700 10,000 700 300 500 300 300 500 300 700 300 1,000 300 500 5,000 500 5,000 500 300 500 300 500 500 700 10,000 500 500 300 700 500 300 300 1,000 500 500 3,000 700 300 700 700 s N N N N N <2 N N N N N N <2 N <2 <2 N <2 N <2 N <2 N N <2 N N N N N <2 N <2 <2 <2 <2 <2 <2 <2 <2 <2 2 <2 <2 N Table 6. Seraiquantitative spectrographic analyses of the nonmagnetic fraction of heavy-mineral concentrates from the U.S. Virgin Islands--Continued oo Sample 84SC15U 84SC156 84SC200 8'4F;C201 84S3202 8423203 84SC204 84SC205 84S3206 R4S:207 84S-208 8USC209 84^:210 845^212 8<4SC213 8UFC2T* 84SC215 8453216 8US321R 84F-C219 84S3220 84SC221 84SC222 8US3223 84S322I4 8USC225 84SC226 84SC227 84SC229 8USC231 845C233 8U^C234 84S3235 84SC236 84SC231 8453240 8US32UO 84S3241 8453242 84SC243 8USC244 84SC245 84SC246 84S3247 84SC248 Bi-ppm s K N N N N N N N 30 N v N N N N N N N N N K N N K N N N N N 150 N N N 20 N N N N N N N N N N N N Cd-ppm s K K N K N N N N N N N N N »l N N N N N N N N N N N K N N N N N N S N N N N N N N N N N N N Co-ppm s N 20 20 15 15 20 N 10 <10 <10 20 15 15 10 <10 15 N N 10 10 N <10 <10 15 15 10 <1 0 <10 15 ', N 15 N 15 20 10 15 15 10 10 15 <10 15 10 10 10 Cr-ppm s 150 2,000 2,000 150 150 3,000 50 500 1,000 70 1,500 1,500 1,000 1,000 100 100 30 100 70 70 100 70 50 500 70 50 200 30 150 100 100 30 150 100 50 70 70 50 70 200 20 50 300 30 150 Cu-ppm s 20 15 1,500 30 50 70 50 20 50 50 30 30 50 30 50 70 50 500 700 700 70 50 50 30 50 20 50 50 200 70 50 70 70 50 50 50 50 50 70 50 30 50 50 70 50 La-ppra s N N <50 N N <50 N <50 N N N <50 <50 N <50 <50 <50 50 <50 <50 <50 <50 <50 N <50 K 50 N 50 70 50 <50 <50 50 <50 50 50 50 <50 50 <50 70 50 <50 50 Ho-ppm s N K N N N N N S N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N K Nb-ppm s N K N N N N N K N K N N N N N N N N K N N N N N N N N K N <50 N N N N N N N N N N N N N K N Hi-ppm s < 10 70 100 20 70 150 10 50 30 30 100 100 50 15 20 20 10 15 10 10 20 20 20 50 15 10 15 < 10 15 20 50 10 70 70 10 50 50 20 30 50 10 20 70 20 50 Pb-ppm Sb-ppm s <20 <20 50 20 30 15,000 200 70 50,000 50 20 <20 <20 300 100 200 <20 1,000 1,500 1,000 <20 20 30 <20 20 50 20 <20 2,000 50 20 150 500 50 1,500 70 70 30 30 500 50 50 20 20 50 s N K N N N N N N N N K N N N N N N N N N N K N N N N N N 700 N K N N N N N N N K N N N N N N Sc-ppm s <10 100 100 20 20 70 15 20 30 15 50 50 50 15 10 15 20 <10 30 15 20 15 15 20 10 10 15 15 20 15 20 10 10 <10 20 20 20 20 20 20 15 15 20 20 20 Sn -ppm s N 30 30 N N 700 1,500 N 2,000 N <20 <20 <20 150 100 2,000 N 500 >2,000 2,000 30 N 100 K N N 2,000 N >2,000 200 200 300 2,000 200 150 50 50 N 100 200 N 30 N 150 100 Sr-ppm s 7,000 500 7DO 1,000 2,000 500 1,500 1,500 1,000 2,000 700 700 700 2,030 1,000 1,000 700 1,500 1,000 1,000 1,000 1,500 1,000 1,000 1,000 1,500 700 1,000 1,500 1,000 1,000 1,000 1,000 2,000 1,500 2,000 2,ODO 1,500 1,500 1,500 1,500 1,500 1,000 1,500 1,500 Table 6. Semiquantitative spectrographic analyses of the nonmagnetic fraction of heavy-mineral concentrates frosi the U.S. Virgin Islands Continued CO to Sample 8USC1514 8USC156 ausc:2oo 8«SC201 8USC2C2 8USC203 8<*sc:2ou 84SC2C5 fli4RC206 134^^207 8USC208 8UF3209 8USC210 8USC212 R4S3213 8USC21U 8US^215 8USC21*i 8USC218 8USC219 8 USC 2 20 8USC221 8USC222 8USC223 8US322U 8US:225 8USC226 8'tSZ227 8USC229 8USC231 8USC233 8US323U 8US3235 8USC236 8USC239 8US-2UO 8USC2UO 8USC2U1 8USC:2U2 8USC243 8 £*SC2UU 8USZ2U5 8USC2U6 8USC2U7 8USC2U8 V-ppm s 100 1SO 150 200 300 300 300 300 300 200 300 ?co 300 300 200 500 300 200 300 200 300 300 300 300 200 200 300 300 3CO SOO 500 200 300 200 700 500 500 700 700 500 300 500 700 500 500 W-ppm s N N N N N V N N N N N N N N V N V N N N N N N N V N N N N N N N N N N N N N N N N N N N N Y-ppm Zn-ppn s <20 N <20 N N 30 <20 20 <20 N 3C 20 30 20 20 30 N 20 50 <20 20 <20 <20 30 <20 <20 30 <20 sa 100r ' 20 N <20 30 20 30 30 30 30 30 30 20 50 <20 30 s N N N N N N 700 N N N N N N V N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Zr-ppm s 2,000 50 1,500 50 150 >2,000 70 100 100 30 100 200 300 70 500 70 70 700 150 2,000 200 100 200 700 500 500 300 100 300 1,000 100 70 70 200 150 700 700 100 300 1,000 300 100 100 100 500 Th-ppffl s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N V N N N N N N N N N N N N N N N Table 6. Semiquantitative spectrographic analyses of the nonmagnetic fraction of heavy-mineral concentrates from the U.S. Virgin Islands--Continued CO CO Sample 84SC249 84FC251 84SC252 8USC253 84SC254 B4SC255 84SC256 84SC257 84SC258 84SC263 84SC280 84SC281 84SC282 84SC28^ 84SC2R4 8'irC285 84SC286 84S"287 84SC288 84SC289 84SC290 84S2291 8USC293 8453294 84SC295 84ST297 84SC299 84SC30G 84SC034S 84SC035S 84SC036S 84SC037S 84SC038S 84SC074S 84SC075S 84SC376S P4SC077S 84SC078S 84SC079S 84SC060S 84rC081S 84S"982S 84SC083S 84SCT084S 84SC085S Latitude 17 45 31 17 44 26 17 44 28 17 44 43 17 44 27 17 44 17 17 43 54 17 43 25 17 43 30 17 46 9 17 42 35 17 41 34 17 41 53 17 42 30 17 42 38 17 45 23 17 44 24 17 43 12 17 43 26 17 43 38 17 43 41 17 43 49 17 44 25 17 44 39 17 44 32 17 44 8 17 45 45 17 45 42 17 45 10 17 45 18 17 45 8 17 44 47 17 45 36 17 45 17 17 44 54 17 44 46 17 44 37 17 44 29 17 44 19 17 44 10 17 44 3 17 43 59 17 44 21 17 44 46 17 45 14 Longitude Fe-pct. 64 40 19 64 41 39 64 41 47 64 42 2 64 42 4 64 42 37 64 42 19 64 42 4 64 42 13 64 44 59 64 50 40 64 49 27 64 49 47 64 49 47 64 50 13 64 41 35 64 40 13 64 41 40 64 41 44 64 41 42 64 41 36 64 41 30 64 41 31 64 41 46 64 41 47 64 41 40 64 51 2 64 50 41 64 51 13 64 50 46r ' 64 50 24 64 50 5 64 50 21 64 46 9 64 46 26 64 46 52 64 47 16 64 47 46 64 46 38 64 47 2 64 47 28 64 46 1 64 45 54 64 46 3 64 45 16 s 3.0 5.0 5.0 5.0 5.0 5.0 5.0 3.0 5.0 5.0 3.0 5.0 3.0 5.0 5.0 7.0 10.0 3.0 7.0 30.0 15.0 15.0 5.0 7.0 10.0 7.0 5.0 7.0 3.0 7.0 2.0 5.0 1.5 5.0 5.0 5.0 5.0 2.0 3.0 3.0 5.0 3.0 3.0 3.0 3.0 Mg-pct . s .70 .70 .70 .70 .50 .70 .50 1.00 .70 .50 .30 .70 .70 .70 1.00 .20 .50 .15 .70 .50 .70 .70 .50 .50 .70 .70 .70 1.00 .70 1.00 .30 .50 .20 .70 .70 .50 .50 .50 .70 .70 .70 .70 .70 .70 .70 Ca-pct. s 15.00 10.00 7.00 7.00 7.00 7.00 7.00 7.00 7.00 7.00 5.00 20.00 20.00 7.00 7.00 .70 7.00 1.00 7.00 1.00 3.00 7.00 7.00 7.00 7.00 7.00 7.00 10.00 7.00 7.00 20.00 7.00 15.00 15.00 15.00 10.00 15.00 10.00 15.00 20.00 15.00 15.00 20.00 15.00 15.00 Ti-pct. s .70 .70 .70 .50 .70 .70 .70 .70 1 .00 >2.00 .30 1 .50 .30 .70 .50 .30 1 .00 2.00 2.00 1.00 2.00 1 .00 .70 1.50 2.00 .50 .50 .50 .50 .70 .30 .30 .30 2.00 1.50 1.50 >2.00 1.00 1.50 .50 >2.00 1 .00 .15 .50 .70 Mn-ppm Ag-ppm Rs-ppm *u-ppm s 1,000 1,500 1 ,000 1,500 1,000 700 1,000 1,000 1 ,000 1,500 300 1,000 1 ,000 1,000 1,500 300 1,000 2,000 2,000 1,500 1,500 1,500 1,500 2,000 1,500 1,000 1,500 1,500 1 ,000 1 ,500 1,500 1,000 700 1,000 700 1 ,000 1,000 500 1 ,000 1,000 1,000 1,000 1,000 1,000 1 ,000 s N N «f K <1.0 K N N N K K N N <1 . 0 N N N N N N N N K N N N N K N N N N K N N N N K N 7.0 N N N K N 5 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N K N N K K N K N 5 N N N N N N N N N N N N N N N N N N N N N N N N N N N N H N N N V N N N N N N N N N N N N B-ppm 5 50 100 100 70 150 100 100 150 200 50 30 30 50 70 100 30 3C 20 70 50 70 500 70 70 70 200 70 50 100 50 70 50 50 50 100 70 50 30 70 50 100 70 100 50 50 Ba-ppn Be-ppm s 300 700 700 3,000 500 500 500 >10,000 10,000 150 >10,000 1,500 300 300 1,000 >10,000 1,500 >10,000 500 1,000 2,000 1,500 500 700 700 500 300 300 150 300 N 300 150 500 150 3,000 >1C,000 5,000 500 150 500 300 300 300 300 s <2 <2 <2 <2 <2 <2 N 2 <2 N N N <2 N N <2 <2 N <2 <2 N <2 <2 <2 <2 <2 N N <2 N 2 N <2 N N N N N N N N N N N N Table 6. Semiguantitative spectrographic analyses of the nonmagnetic fraction of heavy-mineral concentrates from the U.S. Virgin Islands Continued CO Sample flUSC2U9 8U5C251 8US"252 8USC253 8US~25U 8USC255 8USC256 8USC257 8USC258 8 U S 2 1 6 3 8HSC280 8'»S"2fl1 8HSC282 8US~283 8(4^3284 8USC285 8(4S"265 8U<?C287 8USZ288 8HSC2K9 8US~290 8USC291 8HSC293 8USC20U 8USC295 eUSC297 8UP3299 8USC300 8HSC03US 8HSC035S 8USC036S 8USC037S 8US3038S 8US"07US 8USC075S 8USC076S 8USC077S 8USC078S 8USC079S 8USC080S 8I4S3081S 8US2082S 8USC083S 8USC08US 8USC085S Bi-ppm s ti V H H $ V ti ti $ U U N N <20 N N N N N N N N N N N N N N N N N N N N N N N N N 70 N N N N N Cd-ppm s N N N N N N N N N N N N N N N N N N N N N N N N K N N 1 N N N N N N N N N N N N N N N N N Co-ppm s 10 10 10 10 <10 <10 10 15 <10 N <10 10 <10 15 15 20 30 N <10 50 70 50 15 30 20 20 10 20 <10 *5 <10 <10 N N 10 <10 N K <10 N <10 N N N <10 Cr-ppm s 300 30 50 20 20 20 70 200 70 30 100 700 70 200 70 1,000 150 100 7,000 300 200 150 50 30 100 500 20 20 30 20 70 20 20 150 70 70 200 70 100 70 150 70 <20 20 50 Cu-ppm s 50 50 200 70 500 70 50 70 70 50 50 50 50 1,000 70 100 200 70 70 300 500 500 70 70 100 100 50 100 30 30 20 70 30 150 50 50 30 20 2,000 700 70 20 50 100 70 La-ppm Mo-ppm s 50 50 <50 50 <50 <50 <5D 50 50 100 <50 N 50 N N N 70 <50 <50 N N N 50 <50 N <50 <50 <50 <50 <50 <50 <50 <50 70 59 50 70 100 50 50 70 50 K N <50 s N N N »J N N N N N N N 10 N N N N N N N N <10 30 N N N N N V K N N K N N N K V N » N N N N N N Nb-ppm s K N N N N N N N N <SO N N K N N N N N N N <50 N N N N N N N N N K N K N N N N N N N N N N N N Ni-ppm s 70 10 10 10 10 10 10 20 10 20 10 0 <10 10 20 200 200 <10 50 70 100 100 10 10 10 50 <10 10 <10 15 10 10 10 20 15 10 15 N 20 10 20 N N 20 20 Pb-ppm s 100 70 30 1 ,000 10,000 150 300 5,000 1,000 500 1,500 500 7,000 5,000 2,000 70 70 2,000 2,000 150 100 70 50 50 30 50 20 20 300 20 30 200 <20 1,500 1 ,000 70 70 20 300 10,000 100 500 K 1 ,500 2,000 Sb-ppm Sc-ppm s N N N N N N N N N N N N N 300 N N N N »J N N N N N N N N N N N N N N V K N N K N 1,000 N N N N N s 10 15 15 15 15 15 20 15 20 <1C <10 20 15 20 15 <10 10 <10 10 10 10 15 20 20 30 20 20 20 15 30 10 20 15 15 20 20 30 <10 20 20 15 20 <10 15 15 Sn-ppffl s 500 N N 500 >2,000 30 1 ,000 >2,000 2,000 500 300 1,000 1,000 >2,000 100 70 30 2,000 2,000 3D 300 20 N 100 N N N N 300 N 20 >2,000 N 1,500 1,500 1,000 500 N 2,000 >2,000 500 1,500 N >2,000 2,000 Sr-ppsi s 1,500 1,500 1,000 1,500 1,500 1,000 1,50C 2,OOC 1,500 700 >10,000 1,500 1,500 1,000 1,000 1,000 700 >10,000 700 200 700 1,000 1,000 1,000 1,000 2,000 700 700 700 1,000 N 700 500 7DO 700 700 700 1,000 700 700 700 700 1,000 1,000 70C Table 6, Semiquantitative spectrographic analyses of the nonmagnetic fraction of heavy-mineral concentrates from the U.S. Virgin Islands Continued OJ CJ1 Sample 845:219 84SC251 8USC25? 8USC253 8M5C254 8MSC255 84SC256 8USZ257 8USC258 84SC280 84SC261 84S3282 eus:2e3 8 <» S 2 2 8 9 8USC290 84SC291 8USZ293 84SC291 84SC295 8USC297 8USC299 8USC300 8USC03HS 8USC035S 84SC036S 8USC038S 8USC07US 8USC075S 8t4S:075S 8USC077S 8USC078S 8USC079S 84SC080S 8USC081S 84SC082S 8USZC83S 8USC085S PPm s 300 500 c oo 500 500 300 500 500 300 500 200 200 300 700 *00 500 700 150 300 TOO 700 700 500 700 700 500 500 500 200 200 300 300 150 300 500 ^00 700 150 500 300 700 500 200 200 300 W-ppm s N N N N N N N N N N N N N N N V N N V N N N N N N N N N H N N N N N N N N N N N N N N N N Y-ppm s N 20 <20 20 <20 20 <20 30 30 300 N 50 <20 50 <20 s 50 N 50 20 30 30 20 20 30 20 <20 N 20' 20 r N 30 <20 150 100 100 500 200 150 50 500 50 N 20 30 Zn-ppm s N N N N N N N N N N N N N N N 1,000 N 1,500 1 ,500 15,000 N N N N N N N N N N N N N N N N N N N N N N N N N Zr-ppm s 150 100 100 100 70 100 100 700 700 >2,000 200 >2,000 500 >2,000 150 1,000 700 500 150 500 1,000 300 150 100 150 1,000 70 70 70 70 1,000 1,000 30 >2,000 >2,000 >2,000 >2,000 >2,000 >2,000 300 >2,000 2,000 20 1,500 >2,000 Th-ppm s N N N N N N N N N N N N N N N K N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Table 6. Semiquantitative spectrographic analyses of the nonmagnetic fraction of heavy-mineral concentrates from the U.S. Virgin Islands Continued CO Sample 84SC08GS B4SC087S 94SC088S 84SC089S 84SC09GS P4^C091S 94S~G93S 84SC:>94S 84SCC95S eurcoges 84SC098S 84SC099S 64SC100S 84SC101S 84S3102S 84F;ci03S 84SC104S 84SC105S 84^1075 84SC1G8S 8USC109S 84S~110S 84SC111S 84SC112S 84SC113S 84SC114S 84SC115S 84SC116S 94SC117S 84SC118S 84SC119S 84SC120S 84SC121S 84SC122S 84SC123S 84SC124S 84SC125S 84SC126S 84SC127S 84SC12BS 84SC129S 84SCHOS 8USC131S 84SC132S 84SC133S Latitude 17 44 52 17 44 17 17 43 37 17 43 23 17 H? 35 17 42 54 17 43 35 17 43 41 17 43 50 17 44 5 17 45 9 17 45 15 17 45 13 17 45 S 17 44 52 17 44 15 17 44 24 17 44 * 17 44 44 17 44 46 17 43 40 17 43 22 17 43 14 17 43 H 17 43 30 17 42 49 17 42 19 17 42 9 17 42 35 17 42 29 17 42 59 17 42 53 17 43 6 17 43 16 17 43 40 17 43 57 17 42 55 17 43 9 17 42 5 17 43 17 17 43 48 17 42 52 17 43 2 17 42 37 17 43 0 Longitude Fe-pct. 64 45 14 64 45 17 64 45 17 64 45 54 64 47 13 64 47 27 64 47 16 64 46 49 64 46 29 64 45 34 64 44 30 64 44 39 64 43 36 64 44 4 64 43 32 64 43 15 64 43 39 64 43 55 64 44 37 64 44 18 64 44 33 64 44 27 64 44 51 64 45 18 64 44 1 64 42 45 64 42 47 64 43 10 64 43 23 64 43 47r, ' 64 43 50 64 44 16 64 43 33 64 42 54 64 43 29 64 42 43 64 46 52 64 46 27 64 47 17 64 48 8 64 48 20 64 48 3 64 48 51 64 48 40 64 49 18 s 5.0 3.0 3.0 5.0 3.0 3.0 5.0 7.0 3.0 3.0 5.0 1.5 5.0 5.0 5.0 5.0 3.0 5.0 5.0 5.0 15.0 3.0 2.0 1.0 5.0 5.0 5.0 3.0 5.0 5.0 3.0 1.5 3.0 3.0 5.0 1.5 3.0 3.0 3.0 5.0 7.0 5.0 5.0 5.0 5.0 Hg-pct. s .70 .50 .70 .70 .70 .50 .70 .70 .50 .50 .50 .50 .50 .70 .70 .70 .50 .50 .70 .50 .50 .SO .30 1.00 .50 .70 .70 2.00 15.00 3.00 1.00 7.00 .50 .30 .70 1.50 .70 .50 .30 1.00 .50 .70 5.00 .50 .70 Ca-pct. s 15.00 15.00 15.00 20.00 20.00 15.00 15.00 7.00 7.00 7.00 10.00 30.00 10.00 7.00 7.00 7.00 10.00 10.00 7.00 7.00 20.00 20.00 15.00 20.00 15.00 7.00 7.00 15.00 15.00 15.00 15.00 20.00 10.00 20.00 10.00 7.00 15.00 20.00 7.00 10.00 15.00 10.00 7.00 15.00 10.00 Ti-pct. s 1.00 1.50 2.00 .70 1 .50 1.50 1 .00 .50 .70 .70 1.50 .10 1.00 1 .00 .30 1.00 .70 1.50 .70 .70 1.50 1.00 1 .00 .50 >2.00 .70 .50 .30 .70 .70 2.00 1.50 1.00 .30 1.00 >2.00 .70 .70 1.00 .70 1.00 .50 .50 1.00 .50 Mn-ppm s 1,000 1 ,000 1,000 1 ,000 1,000 1,000 1,000 700 1,000 700 700 300 1,000 1,000 300 1,000 1,000 1,000 1,000 1,000 700 500 700 200 700 1 ,000 700 500 1,500 700 1,000 300 1 ,000 700 700 300 700 700 700 1,000 1,000 1,000 700 1,000 1,000 Ag-PPm As-ppm Au-ppm s 7.0 N N N N N N N N <1.0 N N N N N 7.0 N N N N N N N 7.0 N N N N N 15.0 N N N 1.0 10.0 N N 7.0 N 5.0 N 1.5 N N N S N N N N N N H N N N N N N N N N H N N N N N N N N N N N N H N N N N N N N N N N N N N N N s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N B-ppm s 70 50 50 50 70 50 50 200 70 50 70 20 70 70 30 70 70 70 70 70 3C 50 50 300 100 150 100 70 100 50 150 30 70 70 150 70 70 50 70 70 70 70 50 50 50 Ba-ppn Be-ppm s 200 2HO 300 200 300 >10,000 200 700 300 5,000 300 100 500 200 100 500 300 300 200 200 100 70 300 N 300 700 300 3,000 500 500 150 <50 200 500 500 >10,000 200 200 >10,000 300 500 500 50 150 150 s N N N N N N N N N N N N N N N N N <2 N N N N N N N N <2 N N N N N N N N N N N N N N N N N N Table 6. Semiguantitative spectrographic analyses of the nonmagnetic fraction of heavy-mineral concentrates from the U.S. Virgin Islands Continued CO Sample 8US::r)85S 8USCOB7S BUST OB 85 8USC389S 84SC090S 84SC091S Buscngss euszogus 84SC095S 8US3C96S BUSC09BS 8U cr C099S 8USC1:>OS 84PC1C1S 8USC:102S 8USC1D3? BUSCICHS 8USC105S 8USC107S 8USC108S 8USC109S 8USC11GS 8USC111S 8USC112S 8USC113S 8US311US 8USC:115S 8USC116S 8USC117S 8USC118S 8USC119S 8USC120S 8USC121S 8USC122S 8USC123S 8U5C12US RUSC125S 8US2126S 8USC127S 8USC128S 8USC129S 8US3130S 8US~131S 8USC132S 8USC133S Bi-ppm s ^0 N 30 N N N N N N N N N N N N N N N N N N <20 N 150 N N N N <20 20 N N N N 50 N <20 500 N 20 N N N N N Cd-ppm s N N V N N N N N N N N N K N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Co-ppm s 00 N N <10 <10 <10 15 20 N N N N <10 <10 N 10 N <10 <10 N N N N N <10 15 <10 <10 10 £0 <10 N N N <10 N <10 10 N 10 N N 10 N 15 Cr-ppm s 70 100 150 150 150 100 70 70 70 70 70 <20 70 70 20 50 70 100 70 50 150 200 500 300 150 100 150 500 1,000 2,000 200 50 30 30 50 50 70 70 50 70 100 70 30 150 50 Cu-ppm s 700 15 150 50 20 70 15 70 50 200 20 15 500 50 20 300 20 20 30 20 100 2,000 10 700 1,000 700 50 30 700 1,000 50 1,000 30 200 500 70 2,000 5,000 50 1,500 70 2,000 50 50 50 La-ppa s <50 N <50 <50 70 70 50 N <50 <50 <50 <50 <50 N N <50 <50 <50 <50 N <50 70 <50 <50 50 <50 <50 <50 <50 <50 50 <50 N 50 50 50 <50 70 50 <50 70 50 N 50 N Mo-ppm s N N N N N V N N N V N V N 20 N N N N N N N N N N N N N N N N <10 N N N N N N N N N N N N K N Nb-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Ni-ppm s 20 20 20 20 15 30 20 30 10 10 10 <10 <10 70 15 30 15 15 50 30 15 <10 10 15 10 30 15 70 70 150 10 N 20 <10 <10 <10 10 15 <10 15 <10 N N N <10 Pb-ppm s 50,000 70 5,000 1,500 30 20,000 300 300 150 10,000 200 N 10,000 100 30 50,000 200 150 20 30 70 20,000 20 20,000 2,000 1,000 30 15,000 1,500 >50,000 10,000 50 7,000 7,000 50,000 70 1 ,500 50,000 700 1,500 70 15,000 300 700 200 Sb-ppm s <200 N <200 N N N N N N N N N 200 N N N N N N N N N N <200 N N N N N N N N N N 300 N N 3,000 N N N N N s N Sc-ppm s 20 15 15 20 15 20 20 20 30 20 20 N 20 30 10 10 30 20 30 30 15 15 10 10 15 20 15 15 3C 50 50 20 20 15 15 20 30 15 15 20 20 20 15 20 20 Sn-ppm s >2,000 300 >2,000 1,500 20 >2,000 300 300 1,500 >2,000 1,000 N >2,000 200 N >2,OOC 7^ 300 N 200 >2,000 >2,000 N >2,000 >2,000 1 ,500 200 2,000 >2,000 >2,000 1,500 N 300 1,500 >2,000 300 >2,000 >2,OCO 300 >2,000 300 >2,000 300 >2,000 2,000 Sr-ppm s 1,000 700 700 700 700 1,000 1,000 700 1,OOC 1,000 700 2,000 1,000 1,000 700 1,000 1,000 700 1,000 1,000 700 700 500 1,500 700 1,500 1,500 2,000 1,000 1,000 1,000 300 1,000 3,000 1,000 1,000 700 700 3,000 1,000 1,000 1,000 700 1,000 1,000 Table 6. Semiquantitative spectrographic analyses of the nonmagnetic fraction of heavy-mineral concentrates from the U.S. Virgin Islands Continue! Sample e<4?C:086S 8USC087S 8USC088S 8«4S:089S 8USC090S 8USC091S 81SZ093S auszogus 8USr09bS 8USC096S fl'»ST098S 8<4SC*099S 8<4E;C1"OS 8USC101S 8USC102S 8USC103S 8USC104S 8USC105S 8US"107S 8USC108S 84SC109S 8USC110S 8USC111S 8USC112S 8USC113S 8US:11US 8US3115S 8USC116S 84SC117S 8USC118S 8USC119S 8USC120S 8USC121S 8US2122S 8USC123S 8USC12US RUSC125S 8US"126S 8USC127S 8U5C128S 8USC129S 8USC130S 8US2131S 8USC132S 8USC133S V-ppm P 500 300 ?00 300 500 500 C 00 300 300 300 500 30 300 500 200 500 500 300 500 500 200 200 200 70 500 500 500 200 200 200 200 150 300 200 300 500 200 200 300 300 500 500 500 300 300 W-ppro s N N N N N N N N N N N N N N N N N V N N N N N N N N N N N N N N N N N N N N N N N N N N N Y-ppm s 30 50 70 50 200 100 70 30 50 <20 5C N 50 20 <2C 50 20 30 20 3P 30 70 50 30 70 30 20 <20 30 5 Or 70 50 20 N 50 30 50 70 70 50 100 50 20 30 20 Zn-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 2,000 N N N N N 3,000 N N N N N N N N Zr-ppm s >2,000 >2,000 >2,000 >2,000 >2,000 >2,000 >2,000 1,500 2,000 1,000 2,000 50 >2,000 1,000 700 500 1,500 2,000 700 1,500 2,000 >2,000 2,000 100 >2,000 150 2,000 1,500 >2,000 >2,000 >2,000 2,000 1,500 300 1,000 1,500 >2,000 >2,000 >2,000 2,000 >2,000 1,500 1,500 2,000 1,500 Th-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Table 6. Semiguantitative spectrographic analyses of the nonmagnetic fraction of heavy-mineral concentrates froa the U.S. Virgin Islands Continued CO Sanple euSCnuS 8USC135S 84SC136S 84S2137S 84SC138S 8US"n9S euscluos 84SC1U1S 8USC1U2S 8USC1U3S R4SC150S 84SC22RS 84SC23^S 8USC232S 84S::2UOS 8USC2UOS 8USC251S 8USC259S 8USC260S 8USC261S 8USC262S 8USC26US 8USC26US 8USC267S 8USC268S 8USC269S 8usc:27os 8USC271S 8USC272S 8USC27US 8I4SC275S 8USC276S 8USC277S 8USC278S 8I4SC279S 8USC298S 8USC299S Latitude 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 U3 25 U3 3U U2 27 '4 1 33 U1 UO U1 55 U1 U7 141 21 1*2 16 1*2 UU 1*5 3U 1414 6 43 39 I4U 26 UU 5 141* 5 UU 26 1*2 3R 1*6 58 U6 2U 146 31* «*6 16 146 13 U1 19 U1 29 U1 30 141 33 1*1 38 U2 6 141 33 42 8 1*2 0 i*1 52 1*2 13 «*2 30 UU 10 U5 U5 Longitude Fe-pct. 6U 6U 6U 6U 6U 6U 6U 6U 6U 6U 6U 6U 6<* 6U 64 6U 6U 6U 6U 6U 6U 6U 61* 6U 6U 6U 6U 6<* 6<* 6<* 6U 64 6U 6U 6U 61* 6U U9 U8 U9 U8 U8 U9 1*9 1*9 U9 U9 U8 36 38 39 U1 1*1 U1 U2 U5 (*5 «*5 UU U«* 52 52 51 50 51 50 50 51 52 52 51 51 U1 51 26 59 16 5? 23 7 31 25 U3 53 13 39 U3 33 17 19 39 11* 0 1 U 25 22 U9 1U U7 53 22 37' 25 f. ' 5 20 43 46 9 52 2 s 5.0 5.0 5.0 .7 5.0 5.0 3.0 1.5 5.0 7.0 3.0 5.0 3.0 3.0 7.0 7.0 7.0 7.0 20.0 3.0 7.0 5.0 5.0 3.0 7.0 7.0 7.0 5.0 7.0 7.0 7.0 5.0 5.0 5.0 10.0 10.0 5.0 Mg-pct. s .30 .50 .70 .30 .50 .50 .50 .50 .70 .70 5.00 1.00 .70 .70 .70 .70 .70 .70 .70 .20 .50 1.50 1.50 .20 .70 .50 .50 .30 .50 .70 .70 .70 .30 .70 1.00 .70 .50 Ca-pct. s 10.00 10.00 15.00 50.00 15.00 15.00 15.00 10.00 7.00 7.00 15.00 7.00 7.00 7.00 10.00 10.00 7.00 7.00 3.00 10.00 10.00 7.00 7.00 20.00 10.00 7.00 5.00 20.00 7.00 7.00 7.00 7.00 10.00 10.00 7.00 5.00 7.00 Ti-pct. s .50 .50 .70 . 15 .70 .70 .50 .70 .30 .50 >2.00 .70 .70 1.00 1.50 1.50 .70 1.00 2.00 >2.00 >2.00 1.50 1.50 .70 1.00 1.00 .30 .50 .50 .50 1.00 .70 .70 .70 2.00 2.00 .50 Mn-ppm s 700 1,000 1,000 150 500 700 700 300 700 1,000 1,000 1,500 2,000 1,000 1,500 1,500 2,000 1,000 1 ,000 1,500 1,500 1,000 1,000 300 500 700 1,000 700 700 1,000 1,000 700 700 1,000 2,000 2,000 1,000 Ag-ppm As-ppm Au-ppm s N N N <1.0 N N N N N S N N N N N N N N <1.0 N N N N N N N N N N N <1.0 15.0 N N N N N S N K N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N s N N N N N N N N N N N N V N N N N N N N N N N N N N N N N N N N N N N N N B-ppm s 70 70 70 <20 7C 50 70 70 70 100 <20 70 5,000 20 100 100 70 150 30 50 70 70 70 70 50 300 70 100 70 70 100 70 50 100 50 100 50 Ba-ppm Be-ppm s 70 700 150 300 500 500 500 1,000 150 150 300 300 500 700 300 300 300 2,000 >10,000 300 500 300 300 <50 150 150 1,000 1,000 300 10,000 5,000 200 70 300 500 1,000 300 s N N N N N N »l N N N N N <2 N <2 <2 <2 <2 N N N <2 <2 N N N <2 N H N N N N N N <2 N Table 6. Semiquantitative spectrographic analyses of the nonmagnetic fraction of heavy-mineral concentrates from the U.S. Virgin Islands Continued San pi e 8USC13US 8USC135S 8USC136S 8USC137S 81S313RS 8USC139S BUSdUOS Buscims 8^"1U2S 8USC1U3S 8^SZ150S 81SC:228S 81SC230S 8US3232S 8USC2UOS 8USC2UOS 81SC251S 8USC259S 8tlSC26">S 8USC261S 8USC262S 8USC26US 8USC26US 8<4SC267S 8USC268S 81?C269S 8USC27CS 8MSC271S 8USC272S 8USC27US 8USC275S 8USC276S 8USC277S 8USC278S 81SC279S 81S"298S 8USC299S Bi -ppm £ N N N N N N N N N N N N <20 N N N N N N N N N N N N 50 N N N N N 70 N N 150 N N Cd-ppm s N N V N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Co-ppn s <10 N 10 N N N N N 10 10 20 15 <10 15 15 15 20 15 70 N <10 <10 <10 <10 <10 10 10 N <10 '.ID 10 10 N 10 20 20 N Cr-ppm s 30 50 70 100 70 100 50 70 30 7^ 2,000 70 70 300 50 50 50 70 <20 70 70 500 500 70 100 70 30 70 100 30 70 70 200 100 1,500 100 20 Cu-ppm s 20 70 50 70 700 50 50 2,000 70 70 20 70 200 50 100 100 70 50 300 20 20 50 50 15 50 200 50 70 50 50 500 1,500 50 70 700 100 70 La-ppm s N N N <50 <50 50 50 <50 <50 N 50 N <50 50 <50 <50 50 <50 N 300 200 <50 <50 N <50 <50 <50 <50 <50 N <50 <50 N <50 50 50 N Mo-ppm s N N N N V N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Nb-ppm s N N N V N N N N N N N N N N N N N N N 50 <50 N N N N N N N N N N N N N N <50 N Ki-ppm s <10 <10 <10 N N 10 <10 <10 10 <10 100 <10 20 70 10 10 10 10 50 <10 <10 50 50 30 50 15 <10 <10 15 50 20 30 20 N 0 200 10 Pb-ppm s 50 1 ,500 100 15,000 2,000 7,000 7,000 2,000 500 1,000 70 50 500 20 30 30 <20 30 50 150 50 50 50 1,500 300 1,500 50 1,500 200 50 20,000 20,000 1,500 1 ,500 5,000 50 20 Sb-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N <200 300 N N 1,500 N N Sc-ppm s 20 20 30 10 20 10 15 10 15 20 50 30 15 <10 20 20 15 20 15 <10 30 20 20 <10 <10 <10 15 <10 15 20 <10 <10 10 <10 20 20 20 Sn-ppm s 70 150 500 >2,000 2,000 >2,000 2,000 1,500 1,500 2,000 >2,000 N >2,000 N N N N 70 N 300 50 100 100 2,000 >2,000 >2,000 70 1,500 300 N >2,000 >2,000 1,500 2,000 >2,000 N N Sr-ppm s 1,000 1,000 700 5,000 1,000 1,000 1,000 2,000 1,000 1,000 N 1,000 700 1,500 1,500 1,500 1,000 2,000 700 300 700 700 700 3,000 700 1,500 700 1,500 1,000 2,000 1,500 1,000 700 1,500 700 1,000 500 Table 6. Semiquantitative spectrographic analyses of the nonmagnetic fraction of heavy-mineral concentrates fron the U.S. Virgin Islands Continued Sample eas"i3as 8USC135S 8U C C136S 8USC137S 8t»S:i38? 8USC139S RUSC1UOS easziais 8USCH42S 8USC1I43S easci5os 8US~228S 8USC23°S 6USC232S 8USC2UOS easc2ans 8USC251S 8USC259S 8USC260S 8USC2MS 8USC262S 8USC264S 8USC264S 8USC267S 8J4SC268S 8USC269S 8USC270S 8USC271S 84SC272S 8USC27US 8USC275S 8<4SC:276S 8USC277S 8USC278S 8USC279S 8USC298F 8USC299S V-ppm s 300 300 300 70 3CO 300 300 200 500 700 300 500 300 150 700 7PO 500 500 150 300 500 500 500 150 300 500 700 200 500 700 500 300 200 300 700 500 300 W-ppm s N V N N N N N N H N N N N N N N N N N N N N N N N N N N N N N N N N N N N Y-ppm s <20 30 30 20 70 70 50 100 20 20 150 <20 30 70 50 50 30 <20 50 700 500 50 50 150 200 300 <20 50 30 30, 50 100 300 50 50 50 <20 Zn-ppm s N N N N N N N N N N N N N N N H N N U N N N N N N N N N N N N N N N N N N Zr-ppm s 300 700 >2,000 2,000 >2,000 >2,000 >2,000 >2,000 300 2,000 100 30 300 70 100 100 100 1,000 1,500 >2,000 >2,000 1,500 1,500 >2,000 >2,000 >2,000 1,500 >2,000 1,500 1,500 >2,000 >2,000 >2,000 >2,000 >2,000 1,500 70 Th-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Table 7. e emiguantitative spectrooraphic analyses of the magnetic fraction of heavy-mineral concentrates from the U.S. Virgin Islands. [N, not detected; <, detected but below the limit of determination shown; >, determined to be greater than the value shown.1 1 a m p 1 P 83ST001 esrroois 833T002 83ST002S 83ST003 83ST003S 83ST0045 83src>D5s 83SF006S 83STTD7S 83STOD8S 83ST009S R3ST010S 83 r:r:'11F; 83ST012S 83SP013S 83ST014S 83ST015S 83ST015S 83ST017S 83ST022S 83ST023S 83STG24S 83ST325S 83ST026 835T0275 83ST029S 83ST030S 83ST031S 83ST032 83ST033 83sro34 83SI335 83ST036 83ST037 83ST038 83SI039 83ST04C 83ST041 8331042 83ST043 83ST044S 835101*55 83ST046 83FT047S Latitude 18 20 46 18 20 45 18 20 48 18 20 4P 18 20 23 18 20 23 18 19 15 18 19 3* 1619 ? 18 18 41 18 17 52 18 18 0 18 18 6 18 18 10 18 18 54 18 18 33 18 18 26 18 18 24 18 19 47 18 19 18 18 21 15 18 20 47 18 20 21 18 21 17 18 21 22 18 21 52 18 24 7 18 24 35 18 22 1 18 22 37 18 22 1 18 21 34 18 21 49 18 22 28 18 22 12 18 23 0 18 23 14 18 23 41 18 24 5 18 22 24 18 22 21 18 22 24 1 R 20 4 18 19 42 18 16 44 Longitude Fe-pct. 64 53 64 53 64 52 64 52 64 51 64 51 64 50 64 5C 64 49 64 4Q 64 49 64 49 64 49 64 49 64 50 64 51 64 52 64 52 64 56 64 56 64 59 64 58 64 50 64 52 64 53 64 53 64 54 64 54 64 54 64 55 64 55 64 55 64 56 64 56 64 58 64 58 64 58 64 58 64 58 64 58 64 59 64 59 64 56 64 56 64 53 14 14 44 44 58 58 24 13 40 41 2 25 34 44 50 52 14 28 42 34 39 36 42 54 21 35 4S 29' 24: ' 41 15 39 14 57 5 8 21 8 30 32 0 27 15 7 46 s 7 15 15 15 7 7 7 7 5 7 30 30 30 20 15 30 30 10 10 7 7 15 10 20 20 7 7 7 10 20 15 7 10 7 7 5 7 15 15 10 10 7 15 10 10 Kq-pct. S .30 .30 1.00 2.00 1.50 1.00 1.00 .70 5.00 .70 .1C .30 .20 .30 1 .00 .20 .20 .70 1.00 2.00 1.50 1.00 .20 1.00 1.00 1.50 1.50 .30 1.00 .70 2.00 .70 1.00 2.00 .70 1.50 1.00 2.00 2.00 1.00 .70 .70 .15 1.00 3.00 Ca-pct. s 10.00 5.00 7.00 7.00 10.00 10.00 10.00 15.00 15.00 10.00 .10 .20 .15 .20 5.ro .10 .10 10.00 1C. 00 10.00 10.00 7.00 10.00 7.00 7.00 7.00 10.00 10.00 7.00 2.00 5.00 7.PO 10.00 10.00 7.00 10.00 10.00 7.00 7.00 7.00 10.00 5.00 1.50 7.00 7.00 Ti-pct. s .50 .20 1.50 1.50 .50 .50 .20 .30 . 15 .70 .50 .70 1 .00 .50 1 .50 1.00 .70 .70 .50 .30 .70 1.00 .20 1 .00 2.00 .50 .50 .50 .70 .70 1.00 .70 .50 .30 .50 .15 .50 >2.00 2.00 .50 .50 .50 >2.00 .50 1.50 Mn-ppm Aq-ppm fts-ppm ftu-ppm s 1,500 2,000 2,000 2,000 1,500 1,500 1,000 1,500 1,500 1,500 300 700 700 2,000 10,000 1,500 >10,000 2,000 1,500 3,000 1,500 1,000 1,500 1,500 1,500 1,500 1,000 1,500 5,000 >10,000 3,000 1,500 2,000 1,000 1,500 1,500 1,500 5,000 1,500 7,000 1,500 5,000 2,000 1,500 2,000 s $ N N N K N N N N N N N N N N 3.0 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N S N N N N K N K N N N N N N N N N N N N N N N N N N K N N N N N N N N N V N N N N K N N N N S N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N B-ppm S 70 20 3D 50 50 70 50 50 20 50 30 20 20 <20 50 <20 <20 <2r 50 50 70 70 20 50 50 30 30 30 70 150 70 50 70 50 50 30 30 7C 70 50 70 70 5T 70 30 Ra -ppm Pe -pi s 70 300 200 200 70 70 70 <50 <50 <50 200 70 100 300 1 ,500 500 700 <50 N 300 70 1 ,000 <50 150 20C 300 50 150 1 ,000 2,00& 500 100 300 70 100 50 100 700 150 1,000 150 700 300 200 N s N 5 N N N N N N N N 2 2 <2 <2 N N <2 N N <2 <2 N N N N N N N <2 2 N N N N N N N N N N N N N <2 N Table 7. Semiquantitative spectrographic analyses of the magnetic fraction of heavy-mineral concentrates from the U.S. Virgin Islands.--Continued o: Sa uple 83ST3D1 83ST001S 83STOO? 83ST002S R3Src03 essroois 83sroous 83SI005S B3Sr006S R3ST007S 83ST008S R3^roo9s 83ST010S 83SPC11S 83310125 83SP013S 83510145 83rr315S 83SI016S 83ST017S 83ST0223 83?T023S 83Sr?24S 83^r025S 83^1026 83SI027S 83SP029S 83510305 83SI331S 83ST032 83ST033 83RT03U 83SI035 83RT036 83?T037 83ST038 83rro39 essrouo 83srom 835104? 83ST013 83STOUUS 83STOI45S 835TOU6 83SrC47S Bi -ppm 5 N N K N N K N N N N N N N N N N N N N N N N N N K N N N N N N N N N N N N N N N N N N N N Cd-ppm s N N N N N N N N V N N N N K N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Co-ppm s 15 15 70 70 70 15 30 20 20 15 10 100 30 50 20 30 5DO 100 15 15 20 15 50 70 70 20 20 10 "70 3.CTO 70 15 20 15 15 15 10 20 20 50 15 70 15 15 50 Cr-ppm s 7" <20 100 150 100 100 200 100 700 3C 100 1,500 200 70 300 50 730 70 150 500 70 100 30 200 200 70 150 50 70 150 500 70 70 20C <20 50 70 70 70 N 200 50 30 300 70 Cu-ppm s 50 150 300 300 100 50 150 70 50 50 100 150 70 70 150 2,000 700 200 70 30 70 70 150 700 500 70 100 70 300 700 300 70 150 70 70 50 50 500 500 70 70 300 50 70 70 La-ppm s <50 N 50 <50 <50 <50 N N N <50 N N N N <50 N N N N N N N N 50 50 <50 <50 <50 N <50 <50 <50 N N N N <50 <50 <50 N N <50 N <50 <50 Ho-ppm s 15 N 10 N N N N N N N 20 N 15 30 N 50 30 N N N N N N N 15 N N N 15 <10 N N N N N N N N N N N N N N N Nb-ppm s K N N N N N N N N N N N N N N N N N N N N K N N N N N N N N N N N N K N N N N N N N N N N Ni-ppm s 15 10 50 70 30 20 30 33 70 20 15 50 20 3D 3D 15 500 30 15 30 20 30 20 70 70 20 30 15 70 150 50 15 20 50 10 15 20 30 30 10 15 2D <10 50 50 Pb-ppm s 70 70 100 70 30 30 100 30 30 30 70 50 7C 50 50 70 70 20 20 30 70 50 30 50 70 30 30 30 70 200 100 50 50 30 30 <20 30 30 70 20 20 20 70 30 30 Sb-ppm s N N N N N N N N N N N N N N N N N N K N N N N N N N N N N K N N N N N N N N N N N N N N N Sc-ppm s 50 30 70 70 70 7C 70 70 70 7C 30 20 20 30 30 10 50 70 70 50 50 30 70 50 50 30 30 50 30 50 50 50 50 5C 20 30 70 50 50 50 50 50 50 30 50 Sn-ppm s N N N K N N K N N N N N N N N N N N N N N N N N K N N N N N N N N N N N N N K N N N N N N Sr-ppm s 1 ,000 700 1,000 1 ,000 1,000 1,OCO 700 1,000 700 1,000 N N K N 700 N N 700 1,000 7PO 1 ,000 1,000 700 1,000 1,000 1 ,000 1,000 1,500 1 ,500 700 1,000 1,000 1,500 1,000 1 ,500 70D 2,000 700 700 1,000 2,000 300 3CO 700 700 Table 7. Semiguantitative spectrographic analyses of the magnetic fraction of heavy-mineral concentrates from the U.S. Virgin Islands.--Continued Sample 83SI001 83ST001S 83FT002 83ST002S 83ST003 83ST003S 83STOOUS 83ST005S P3~roo<>s 83ST007S R3ST008S P3ST009S 83ST010S 83ST011S 83SI012S 835T013S 83ST01US R3ST015S 835T016S 83ST017S 83ST022S 839T023S 63ST02US 83ST025S 83ST326 83ST027S 83ST029S 83ST030S 83ST031S 83ST032 83SPC33 83ST03U 83ST03b 83SP036 83ST037 83?T038 83ST039 83STOUO 83sroai 83STOU2 P3STOm 83STOUUS 83STGU5S 83STOU6 833TOU7S V-ppm W-ppm s s 500 N 300 N 1,000 V 700 N 700 N 500 N "700 N 700 N SCO N 700 N 100 N 300 N 300 N 500 N 500 N 1,000 N 1,000 N 1,000 N 700 N 200 N 500 N 1,000 N 700 N 1,000 N 700 N 500 N 700 N 700 N 700 N 700 N 1,000 N 700 N 1,000 N 700 N 500 N 500 N 700 N 1,000 N 1,000 K 500 N 700 N 700 N 300 N C 00 N 700 N Y-ppm s 50 50 50 50 50 50 50 50 20 50 100 200 150 50 50 <20 30 20 50 50 30 30 30 50 50 <20 30 30 30 ' 50 ,. - 50 50 50 30 30 <20 70 70 70 50 50 50 50 50 50 Zn-ppm s N N N N N N N N N N N N 700 N N 1,500 500 N N N N N N N N N K K N N N N N N N N N N N N N N N N N Zr-ppm s 70 30 100 100 50 50 20 50 <20 50 100 100 50 30 50 30 30 30 30 50 50 N 20 70 70 50 50 50 50 30 150 50 70 <20 30 <20 30 150 150 30 30 30 100 5" 150 Th-ppm s N N N N N N N N N K N N N N N N N N N N N N N N N N K N N N N N N N N N N N N N N N N N N Table 7. nemiquantitative spectrographic analyses of the magnetic fraction of heavy-mineral concentrates from the U.S. Virgin Islands.--Continued CJ1 Sample 83ST048 83ST049S 83ST050 83ST051 83ST052 83ST05U 83ST055 83ST056 83SP057 83SI058 83ST059 83SI050 83ST061 833T062S 83ST063S 63ST065 83FT067 8 JFT068 83ST059 83STC70 835T071 83SIT.72 83ST073 83ST074 83ST075 83ST076 83ST077 83ST078 83ST079 83ST080 83ST081 83STv82 83SI083 83S-T085 83ST086 83ST087 83ST088 83ST089 83SI090 83ST001 83SI092 83ST093 83STC9U 83ST095S 8351^96 Latitude 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 19 19 19 19 21 20 21 20 20 21 21 22 24 21 19 19 19 19 19 19 19 20 19 19 19 19 19 20 20 20 20 21 21 21 22 22 21 21 21 21 20 21 21 39 58 3P 37 48 55 0 54 16 40 23 42 (43 52 20 46 4 1 59 36 (40 (42 19 27 5 44 34 12 11 30 13 18 12 15 32 17 43 11 9 5? 39 32 4 45 15 28 Longitude Fe-pct. 54 64 64 64 64 64 64 65 65 65 65 65 55 65 65 64 6U 64 64 6(4 6(4 54 64 6(4 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 65 65 65 65 65 65 53 53 55 56 57 58 59 1 2 4 5 2 3 3 3 59 51 51 51 52 52 53 53 53 53 54 54 53 54 54 54 54 53 54 55 56 57 57 58 0 1 1 1 0 1 4 28 1P 58 31 21 10 54 6 47 6 49 9 40 36 37 14 14 40 23 25 29 28 3 0 35 42 59 16' 3 O r - 24 12 30 30 16 31 8 38 35 55 5 22 22 10 55 s 15 20 7 15 20 30 7 7 7 5 7 7 7 10 7 10 20 10 10 10 7 7 10 7 5 10 10 10 15 10 7 10 7 7 7 7 7 10 10 7 7 7 10 7 7 Mcj-pct. s 1.00 .70 1.50 .30 .30 .15 2.00 1.00 .70 .70 .50 .70 .70 1.00 3.00 1.00 .50 .30 .30 .50 .30 .70 .70 1.50 .30 .50 .70 .70 .70 .70 .70 .70 .50 1.00 .30 .50 1.00 .70 .30 1.00 .70 1.00 1.00 1 .50 .70 Ca-pct . s 7.00 2.00 7.00 7.00 .50 .10 10.00 7.00 7.00 10.00 10.00 10.00 7.00 7.00 7.00 10.00 5.00 7.00 7.00 7.00 7.00 7.00 7.00 10.00 7.00 7.00 7.00 20.00 5.00 10.00 7.00 10.00 10.00 7.00 10.00 7.00 10.00 7. no 5.00 7.00 10.00 7.00 7.00 7.00 7.00 Ti-pct. s .30 1.00 .70 2.00 >2.00 .70 .50 .30 .20 .20 .30 .50 .70 .50 .30 .30 2.00 1 .00 1 .50 1.00 .50 .70 .50 .70 .50 .50 2.00 .50 .70 .70 .70 .50 .70 .70 .30 .70 .30 .30 .50 .70 .50 .50 .70 1 .00 .50 Mn-ppm Ag-ppm As-ppm Au-ppm B-ppm s s 1,500 <1.0 1,000 5.0 1,500 N 2,000 N 700 N 150 N 1,500 N 1,500 V 2,000 N 1,500 N 1,500 N 2,000 N >10,000 N 2,000 N 1,000 N 1,500 N 2,000 1.0 2,000 N 1,500 N 2,000 N 1,500 N 2,000 N 5,000 2.0 2,000 10.0 2,000 N 5,000 N 1,500 N 1,500 N >10,000 N 2,000 N 1,500 N 2,000 N 1,500 N 1,500 N 2,000 N 2,000 N 5,000 N 1,500 N 2,000 N 2,000 N 2,000 N 2,000 N 2,000 N 1,500 N 2,000 N s s s N N 30 N N 20 N U O /"i N J I" N N 50 N N 30 N N 20 N N 50 N N 7 *"> N N 70 N N 50 N N 50 N N 50 N N 50 N N 50 N N 50 N N 70 N N 50 N N 100 V N 70 N N 70 N N 70 N N 50 N N 50 N N 50 K N 50 N N 50 N N 50 N N 30 N N 50 N N 70 N N 50 N N 50 N N 70 H M C. A n DU N N 100 N N 50 N N 50 UN 50 N il ^\ r\ W / L N N 50 UN 70 N N 70 N LJ T r> n / \t N N 50 N N 7T Ra-ppm s <50 <50 50 150 70 700 <50 <50 150 70 50 500 2,000 500 50 50 200 150 200 100 1CO 50 100 200 100 200 <50 <50 2,000 200 100 70 <50 100 100 300 700 200 300 70 150 100 70 50 100 Be-ppm s N <2 N 5 2 N N N N N <2 <2 <2 5 N N <2 N N N N N N N <2 N N N <2 N N N N N <2 <2 N N N N N N N N N Table 7. Semiquantitative spectrographic analyses of the magnetic fraction of heavy-mineral concentrates from the U.S. Virgin Islands.--Continued 0*2 Sample 83STOU8 83srou9S 83ST050 83ST051 83ST052 83ST35U essrcss 83ST056 83^1057 83ST058 83?TO?9 83ST06C 83SI061 83^T062S 83FT063S 83ST065 83STG67 83ST068 83ST069 83ST070 83ST071 83ST072 83SI073 R3ST07U 83Sr075 83ST076 83ST077 83STD78 83SI079 83ST080 83ST081 6351082 83SPC83 83ST085 83ST086 83FT087 83ST088 83ST089 P3-TC90 83ST091 8321092 83FT093 83ST09U 83ST095S R3ST r'96 Bi -ppm 5 so N N N N <20 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N K N N N N N' N N N Cd-ppm s N N N N N N N N N N N q N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Co-ppm s 70 70 15 <10 10 N 2C 20 15 15 15 15 100 20 10 20 70 30 20 20 10 15 70 20 <10 15 20 20 '30 £t) 15 15 15 20 15 70 20 20 20 20 20 20 20 20 15 Cr-ppm s 1,000 500 70 300 20 <20 100 <20 <20 30 20 <20 <20 20 50 20 200 500 150 500 200 2,000 2,000 50 200 50 500 50 50 700 30 300 20 70 200 30 100 50 50 30 30 30 70 30 <20 Cu-ppm s 1 ,500 700 100 30 50 300 70 70 50 50 30 50 70 100 50 150 500 100 70 70 50 150 500 70 30 200 100 100 200 200 70 150 30 70 50 70 70 100 100 100 70 100 150 70 70 La-ppm s <50 <50 <50 50 30 N <50 <50 <50 <50 <50 50 <50 <50 N N 50 <50 50 <50 <50 <50 100 <50 N N 50 N <50 50 N N N <50 <50 <50 N N N N N N N N N Mo-ppm s N N N N N 50 N N N N N N 10 N N 15 N N <10 <10 N N 20 N N N N N N N <10 N N N N N 10 N N N N N N N N N b-ppra s N N N N N N N V N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N i-ppm s 70 30 20 10 <10 <10 30 10 10 10 10 10 10 20 10 10 30 30 15 30 10 20 30 20 10 15 30 20 30 20 15 10 10 20 15 10 20 10 20 20 15 15 15 20 15 Pb-ppm Sb-ppsi s 30 70 100 70 150 200 150 <20 <20 20 30 30 70 50 30 30 300 50 50 70 50 50 50 150 30 50 50 70 100 1,000 30 30 30 50 30 30 70 20 30 <20 20 <20 <20 <20 <20 s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N K N N N N N N N N N N N N N N Sc-ppm S 50 20 70 50 70 10 70 20 30 30 20 50 30 30 70 50 50 70 30 50 50 50 50 70 30 70 50 50 50 70 50 70 50 50 50 30 50 50 30 50 50 50 50 50 30 Sn-ppm s N N N N N N N N N N N K N N N N N K N N N N N N N N N N N N N N N N N N N N N N N N N S N ?r-pp» s 300 N 700 1 ,000 N N 1 ,000 50D 1,500 1,000 2,000 2,000 1,500 1,000 1 ,500 1,000 700 1 ,000 1 ,000 1,000 1 ,000 700 500 1,000 1 ,000 700 500 700 700 1,000 700 1,000 1,000 1 ,000 1 ,000 1 ,000 700 1 ,000 1,500 1,000 3,000 500 500 300 1,500 Table 7. Semiquantitative spectrographic analyses of the magnetic fraction of heavy-mineral concentrates from the U.S. Virgin Islands.--Continued San pie 83STOH8 83ST049S 83ST050 83ST051 83ST052 83STD5H 83ST055 83ST056 83ST057 83ST058 83ST059 83ST060 83ST061 83ST062S 83ST061S 83ST065 83ST067 R3ST068 83ST069 83ST070 83ST071 83ST072 83ST073 83ST07t» 83ST075 83ST076 83ST077 83ST078 83ST379 83ST080 83ST081 83ST082 83STC83 83STC85 83ST086 83ST087 83ST088 83ST089 83STD9D 83ST091 83STC92 83ST093 83ST09U 83^r095S 83ST096 V-ppm s 700 TOO 700 300 700 200 700 700 ^00 300 200 300 200 500 300 1,000 700 500 500 500 300 5CO 700 700 200 500 500 700 500 500 500 700 700 700 300 200 700 500 700 700 500 700 1,000 700 700 W-ppm s N N N K N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Y-ppm s 50 50 30 70 100 50 50 20 30 20 20 70 50 50 30 30 300 50 50 50 50 50 70 50 50 50 50 50 50 ' 50 : 50 50 50 30 50 50 30 30 30 30 30 30 30 20 30 Zn-ppm s N N N N N N N V N N N N N N N N N N N N N N <500 N N N N N N N N N N N N N N N N N N N N N N Zr-ppm s 20 30 30 70 200 70 30 <20 3C 30 50 70 50 70 50 <20 50 70 70 70 30 50 30 50 50 30 70 30 30 100 30 30 50 50 50 50 30 30 30 30 30 30 30 30 30 Th-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Table 7. Semiquantitative spectrographic analyses of the magnetic fraction of heavy-mineral concentrates fro« the U.S. Virgin Islands.--Continued CO r-anple 83ST097 83ST098 83ST099 83ST102S 83ST103S 83ST104S 83ST105S 83ST1P6S 83ST108S 83?T109S 83ST1 10S 83ST111S 84SJ001 8J4SJ002 84SJ003 84SJ004 84SJ005 84SJ006 84SJ007 84SJ008 P4SJ009 8USJC10 84SJ011 84SJ012 84SJ013 84SJ014 R4SJ015 84SJ016 84SJ017 84SJ018 84SJ019 8J4SJ020 84SJ021 84SJ02? 84SJ023 84SJ024 84SJ025 8I45J026 84SJ<?27 84SJ028 B4SJC29 84SJ030 84 S JO 31 34SJG32 84SJ033 Latitude 18 20 44 18 20 149 18 20 58 18 18 28 18 18 57 18 21 33 18 21 44 18 21 43 18 21 50 18 21 34 18 20 48 18 19 52 18 20 27 18 20 29 18 20 49 18 20 53 18 21 8 18 21 12 18 21 12 18 21 12 18 21 16 18 21 57 18 21 57 18 21 54 18 21 38 18 21 28 18 21 50 18 21 27 18 21 15 18 21 7 18 21 20 18 21 30 1821 4 18 20 57 18 20 55 18 20 32 18 20 4? 18 21 29 18 21 33 18 21 3 18 20 20 18 20 33 18 20 43 18 20 17 18 20 3 Longitude Fe-pct. 64 56 55 64 57 8 64 57 46 614 50 0 64 49 55 64 50 21 64 49 32 64 49 U2 6t4 52 12 6U 51 146 64 51 U5 614 50 147 6U 147 22 64 47 6 64 146 51 614 U6 36 614 146 30 6t4 146 5 64 145 149 614 145 21 64 45 9 614 Ut4 2Q 64 Ut4 17 6U U3 UO 6U 14U 6 614 t4U 22 614 143 6 6U 143 142 614 143 2 6U U2 14$ ' 614 142 22 6U 142 4 614 143 24 fit4 143 29 614 U3 27 '614 142 55 614 143 5 6U 41 145 6U 141 27 614 UO 59 614 40 23 64 UO 26 64 40 27 64 42 4Q 64 42 31 s 10 10 10 10 7 10 10 10 10 20 10 10 7 10 15 10 10 10 10 10 7 15 10 15 15 15 10 10 20 15 15 20 10 15 15 15 10 15 20 20 50 30 20 10 30 Mg-pct . s 1.50 1.50 1.50 5.00 1.00 1.50 2.00 3.00 5.00 3.00 .50 1.00 .70 1.50 5.00 5.00 1.50 2.00 5.00 2.00 3.00 7.00 7.00 3.00 5.00 3.00 7. 00 5. no 2.00 5.00 5.00 3.00 5.00 3.00 2.00 2.00 3.00 5.00 1 .50 5.00 1.50 3.00 2.00 2.00 1.50 Ca-pct. s 10.00 10.00 7.00 10.00 10.00 10.00 15.00 15.00 7.00 5.00 20.00 7.00 15.00 15.00 10.00 15.00 15.00 15.00 15.00 15.00 10.00 5.00 7.00 30.00 15.00 20.00 20.00 15.00 7.00 10.00 15.00 10.00 15.00 10.00 10.00 15.00 15.00 10.00 10.00 7.00 3.00 7.00 10.00 15.00 10.00 Ti-pct. s .70 .70 .50 .50 1.00 .70 .70 1.00 1.00 1.00 .70 2.00 1.50 1.50 1.00 .70 .70 .70 .70 .70 .70 .70 1.00 1.00 .70 2.00 1.00 1.00 >2.00 1.00 2.00 2.00 1 .00 1.50 1.50 1 .50 1.00 1.50 2.00 >2.00 >2.00 >2.00 2. no 2.00 1.50 Mn-ppm Ag-ppm As-ppm Au-ppm s 2,000 2,000 2,000 2,000 2,000 2,000 1,500 3,000 3,000 2,000 2,000 3,000 2,000 2,000 2,000 3,000 2,000 2,000 3,000 2,000 3,000 3,000 5,000 7,000 3,000 7,000 5,000 3,000 10,000 3,000 7,000 7,000 3,000 5,000 5,000 3,000 5,000 5,000 3,000 7,000 1,500 3,000 3,000 2,000 2,000 s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N V N N N N N 3.0 s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N B-ppm s 50 50 50 N 20 20 N N N 50 20 N 50 70 30 50 30 50 50 50 50 30 50 30 30 30 20 30 50 50 5C 10C 70 30 50 50 50 150 <20 N N N N 30 3C Ba-ppm Be-ppm s 150 50 200 <50 <50 1,000 300 <50 150 500 ED 500 200 150 100 500 150 150 100 150 200 300 500 70 200 200 200 500 300 150 300 150 150 300 500 300 1,000 500 200 500 200 150 3CO 200 300 s N N N N N <2 N N N N N N N N N N N N N N N N N N N N N N N N N N N <2 <2 N N N N <2 N N N N N Table 7. Semiquantitative spectrographic analyses of the magnetic fraction of heavy-mineral concentrates from the U.S. Virgin Islands.--Continued Fample 83SI097 835T09B 83ST099 83ST102S 83SI103S 83ST10US 83SI105S 83ST106S 83Sn08S 83ST109S 8 3 FT 11 OS 83FT111S 8 US JO 01 HU5J002 eusjoos eusJoou 8USJ005 84SJ006 8USJOG7 8U5JG08 8U^jno9 8USJC10 8USJ01 1 6USJ012 8USJ013 8USJ01U 84SJ015 8U5J016 8USJ017 PUSJ018 8USJ019 8USJ020 8USJ021 PUSJ022 8USJT23 6U5J02U 8USJ025 8USJC-26 PU5J027 8USJG28 8USJC29 8USJ030 PU5J031 8USJ032 6 U 5 J 0 3 ? Bi-ppm s N N N N N N N N N N N <20 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Cd-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Co-ppm s 20 20 20 30 15 20 15 50 50 70 20 50 <10 15 100 50 20 20 20 23 20 70 50 50 50 50 50 50 '70 r.5D 50 70 30 20 30 20 50 70 100 100 300 70 70 15 300 Cr-ppm s 150 70 70 700 150 50 50 30 70 20 50 <20 20 200 50 100 50 50 100 150 70 100 7G 70 200 300 100 70 50 70 70 50 150 100 20 1,000 700 150 1,000 70 100 150 100 700 1,OOD Cu-ppm s 100 100 100 150 50 500 200 100 150 1,000 100 500 150 100 300 150 150 150 150 150 100 300 150 100 200 200 150 150 300 150 150 150 100 150 300 150 150 300 500 700 1,000 200 500 150 1,500 La-ppm s <50 N N <50 <50 <50 N N N N <50 N 50 <50 N 50 <50 <50 <50 <50 <50 N N N N N N N <50 N <50 100 N 50 <50 50 <50 <50 N N 50 N N N N Mo-ppm s N N N N N <10 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Nb-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N i-ppm s 20 20 20 70 20 50 20 20 50 70 30 20 10 20 50 30 20 15 30 20 30 150 30 20 50 70 150 30 30 70 50 50 50 30 20 30 30 30 50 30 50 70 50 30 70 Pb-ppm Sb-ppm s 150 30 30 50 70 30 50 20 20 100 <20 30 50 30 <20 20 20 20 <20 20 20 <20 20 <20 50 50 <20 <20 70 <20 30 100 30 30 70 100 50 70 20 20 30 20 30 100 70 s N N N N N N N N N N N N H N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Scr-ppm s 70 50 50 70 50 20 20 30 70 50 15 50 15 15 10 15 20 15 20 20 10 15 15 10 15 15 15 20 15 15 15 15 20 10 10 10 10 10 <10 20 15 15 10 15 10 5n-ppm s K N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 700 N N N 150 N N N N N N N N N Sr-ppm s 1,500 1,000 1,000 300 1 ,000 700 1 ,500 <200 500 1,000 300 500 1 ,000 1 ,500 700 1 ,500 1,000 1 ,000 1 ,000 1 ,500 700 <200 300 300 500 1 ,000 200 300 300 303 1,000 500 500 700 700 1 ,000 1,000 700 N N N <200 700 1 ,000 1,000 Table 7. Semiguantitative spectrographic analyses of the magnetic fraction of heavy-mineral concentrates from the U.S. Virgin Islands.--Continued cn CD Sample V-ppm W-ppm Y-ppm ?,n-ppm Zr-ppm Th-ppm «- e? c? e? e o s s s s P3ST097 83ST098 83ST099 83ST102S 83ST103S 8 ? s r 1 r/ u s 83sno5s 83?T10'r>S 83Sn08S P3Sri39S 83srnos 83ST1 11S 8USJ001 8USJ002 8USJ003 8U5JOOU 84SJ005 8USJ006 8USJ007 8USJ008 8U3J009 8USJ010 8USJ01 1 8USJ012 PUSJ013 8U3J01U 8USJ015 8USJ016 8USJ017 8USJ018 8USJG19 8USJ020 8USJC21 8U5J022 8USJ023 84SJT2U 8USJ025 6USJ026 8USJ027 8KSJC28 PHSJ029 PUSJD30 8USJ031 8USJ032 eusjn33 1,000 1,000 1,000 500 500 500 500 700 700 1,000 300 1,000 700 1,500 700 700 1,000 700 1,500 1,500 700 1,000 700 1,500 1,^00 1 ,500 1,500 1,500 500 1,000 700 700 700 700 1,000 1,000 1,000 1,000 2,000 700 1,COO 1,000 7CO 700 1,000 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 50 30 30 30 50 20 20 30 20 30 50 50 70 50 50 30 50 50 50 70 50 50 50 50 50 70 50 30 100' 50r ' 70 150 50 50 70 70 70 70 70 300 500 200 70 70 300 N N N N N N N N N N N N N N N N N N N N N N N N N N N N 3,000 N N N N N N N N N N N N X N N N 50 30 30 20 50 50 50 30 50 50 70 100 200 200 70 100 100 100 100 100 100 100 100 100 100 150 100 100 700 70 100 150 100 150 150 150 100 1,500 100 200 100 100 100 100 100 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Table 7. Semiquantitative spectrographic analyses of the magnetic fraction of heavy-mineral concentrates fron the U.S. Virgin Islands.--Continued CJ1 ?a itiple 84SJC34 84SJ035 84SJ036 84SJ037 84SJ038 843J039 84SJC40 84SJG41 84SJ042 84SJ043 84SJ044 84SJ045 84SJ046 84SJ048 84SJ049 843J050 84SJ051 84SJ053 84SJ054 84SJ055 843J056 84SJ057 845J058 84SJ059 84SJ070 84SJ071 84SJ072 P43J073 84SJ074 84SJ075 843J076 84SJ077 84SJ078 84SJ079 P4SJ081 84SJ082 84SJC8"? 84SJ084 R4SJ085 84SJ086 84SJ087 84SJ088 84SJ089 843 jr>90 84SJ091 La titude 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 1R 18 18 18 18 18 18 19 (4(4 10 19 19 10 19 3 19 15 19 46 19 50 19 (49 19 39 19 32 19 24 19 24 19 26 19 39 19 (44 19 35 19 29 20 27 20 29 20 19 20 21 20 7 20 (4 19 22 20 39 20 32 20 43 20 20 20 9 20 5 20 (4 20 7 19 (47 20 10 20 50 20 51 20 31 20 28 20 14 19 58 19 (44 21 17 21 28 21 (45 21 38 Longitude Fe-pct. 6(4 64 6(4 64 6(4 64 64 64 6(4 64 6(4 6(4 64 54 64 6(4 6(4 64 64 6(4 6(4 64 6(4 6(4 6(4 6(4 64 6(4 6(4 64 6(4 64 64 6(4 64 6(4 6(4 64 64 6(4 6(4 64 64 6(4 64 (42 (42 (42 42 43 43 (43 43 43 (43 4(4 (43 43 (45 45 45 45 45 45 45 45 45 (45 46 (46 46 45 46 46 46 46 46 46 47 44 44 44 44 44 44 44 47 47 46 49 14 5 23 45 9 4 5 11 20 18 4 50 44 57 48 30 27 32 34 36 41 42 51 48 18 7 40 22 13' 16, - 37 36 40 27 31 32 27 30 23 23 27 36 24 31 0 s 15 15 15 15 10 7 10 7 10 15 15 10 15 10 15 10 15 10 10 10 10 15 10 15 15 10 10 10 15 15 15 10 10 10 20 15 15 10 15 15 15 15 20 30 20 Mg-pct . s 1.50 1.00 2.00 1 .00 1.00 1.00 2.00 1.50 1.00 .70 .50 1.50 1.00 5.00 1.50 1.00 1.00 2.00 1.50 1 .00 1 .50 1.50 1.50 2.00 1.50 1.50 1.00 2. CO 1.00 1 .50 1.00 1.50 3.00 1.00 2.00 2.00 1.50 1.50 1.50 2.00 1.00 2.00 1.50 2.00 3.00 Ca-pct. s 7.00 7.00 15.00 15.00 20.00 20.00 15.00 15.00 15.00 15.00 15.00 15.00 20.00 15.00 15.00 20.00 15.00 20.00 20.00 20.00 15.00 20.00 15.00 15.00 20.00 15.PO 20.00 15.00 15.00 15.00 15.00 15.00 15.00 15.00 10.00 15.00 15.00 15.00 15.00 15.00 15.00 15.00 20.00 5.00 15.00 Ti-pct. s 1 .00 >2.00 .70 1.50 1.00 .50 .70 1 .00 1.50 1.50 .70 1.00 1 .50 1 .00 1.00 1.00 .50 .70 .70 .50 .70 1 .00 .70 .70 .70 .70 .70 .50 .70 1 .00 1 .50 .70 .70 .70 >2.00 2.00 2.00 .70 1.00 2.00 1.00 2.00 1 .50 >2. ^0 2.00 Mn-ppm Ag-ppm s 2,000 2,000 2,000 3,000 2,000 2,000 2,000 7,000 3,000 3,000 2,000 3,000 2,000 2,000 2,000 1,500 2,000 2,000 2,000 2,000 2,000 2,000 2,000 2,000 2,000 2,000 2,000 2,000 3,000 1,500 2,000 2,000 2,000 1,500 5,000 7,000 2,000 1,500 3,000 2,000 2,000 2,000 2,000 3,000 3,000 s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 1.5 N N N N N As-ppm Au-ppm s s B-ppm Ba-ppm Be-ppm s s s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 2C 20 20 50 5C 30 50 30 50 50 7? 70 70 70 100 100 50 50 50 50 50 70 70 70 70 50 70 7C 70 70 100 7C 70 50 20 20 30 7C- 5C 50 100 20 50 20 20 7^ 150 20 70 100 70 200 700 100 300 150 300 200 100 50 50 200 100 70 70 100 70 150 100 200 150 70 100 100 300 300 150 100 70 300 300 150 100 500 300 200 300 200 200 200 N <2 N N <2 <2 N N <2 <2 <2 N N N N N <2 N N N N N N N N N N N N N N N N N N N N N <2 <2 <2 N N N N Table 7. Semiquantitative spectrographic analyses of the magnetic fraction of heavy-mineral concentrates fron the U.S. Virgin Islands.--Continued Sample BUSJ03U 8USJT35 RUSJC36 8U5JT37 t»i4SJ038 64SJ039 eusjoao 8<4SJOU1 8U3JOU2 8USJ0143 8USJOUU 8USJCf45 84SJPU6 8USJOU8 8USJCf49 RUSJ050 8USJ051 8USJ053 814SJ05U 8USJP55 B^SJO^e 8(4SJ057 8f4SJ058 8USJT59 8USJ070 8USJ071 8USJ072 8USJ073 8USJ07U 8USJP75 8<4SJC76 8<4SJ077 8USJ078 8USJG79 8USJG81 843JG82 814SJ083 814SJC8U 8 H S J 0 8 5 PU3JC86 PUSJ087 84SJ088 8USJ089 8t4SJ090 8<4SJOQ1 Bi-ppm E N N N N N N N N N N N N N N N N N N N N N N N N N K N N K N N N N N K N N N N N N N K N N Cd-ppm e; N N N N N N N N N N K N K N N N N N N N N N N N N N N N N N N V N K N N N N N N N N N N N Co-ppm s 50 30 70 30 20 20 20 15 15 20 <10 20 15 30 20 15 20 20 15 15 20 15 20 20 15 15 20 15 15 r 20 20 15 15 10 100 30 20 20 30 30 20 70 50 70 70 Cr-ppm K 70 150 150 3,000 1 ,500 200 500 100 200 700 1 ,500 50 70 200 700 300 50 100 150 150 200 70 50 200 100 100 100 50 100 100 700 150 150 200 500 500 1,000 100 500 70 50 200 5,000 70 70 Cu-ppm s 700 700 500 150 70 50 150 70 150 70 70 100 100 150 150 100 700 100 100 70 100 100 70 200 150 100 100 150 100 150 150 100 150 70 300 200 100 70 200 500 100 200 200 700 700 La -ppm s N N N N N 50 N <50 N 50 <50 50 <50 <50 N N K <50 N K <50 N N N <50 N N <50 N <50 <50 N N <50 <50 <50 N N <50 N V 50 <50 <50 N No-ppm s N N N N N V N K N N N N N N N N N N N N N N N N N K N N N N N K N N V N N N N 30 N N N N N N b-pptn s N N N N K N N N N N N N N N N N N K N N N N N K N V N N N N N N N N N N N K N V N N N K N Ni -ppm s 50 30 100 50 20 20 20 15 15 20 20 20 20 30 30 30 20 30 30 20 30 30 30 30 30 30 20 30 20 20 30 20 30 30 50 50 30 30 30 30 15 70 30 70 50 Pb-ppm s 50 50 50 50 50 50 70 100 50 50 70 50 50 20 30 30 300 20 30 20 20 20 20 50 50 30 30 30 30 30 30 30 30 50 50 50 30 30 50 50 30 50 50 50 20 Sb-ppm s N N N N N N N N N N N N N K N N N V N N K N N N N N K N N N N N N N N N N N N N N N H N N Sc-ppm s 10 <10 15 15 10 10 10 <10 10 10 <10 <10 10 15 10 15 <10 20 20 <10 10 15 10 15 20 15 20 15 20 10 15 15 20 15 15 15 15 10 10 <10 <10 20 20 <10 <10 Sn-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N K N N N N N N N N N N N N N N N N Sr-ppm s 700 700 500 1,500 1,500 2,000 1,000 1 ,000 1 ,000 1 ,500 1,500 1,500 1,500 1,500 1 ,500 1 ,500 1,500 2,000 2,000 1,500 1,500 1 ,500 1,500 1 ,500 2,000 1,500 2CO 1,500 1 ,500 1,500 1,500 2,000 2,000 2,000 700 1,000 1 ,500 1 ,500 1,500 1 ,000 1 ,500 1,500 2,000 <200 <200 Table 7. Semiguantitative spectrographic analyses of the magnetic fraction of heavy-mineral concentrates from the U.S. Virgin Islands.--Continued CJ1 CO Sample 84SJC34 8USJ335 84SJ036 84SJ037 84SJ038 84SJC39 84SJ040 84SJPU1 843JC42 843.7043 84SJ04U 8USJ045 845J046 84SJOU8 84SJC49 84SJ050 84SJ051 84SJ053 P4SJG54 84SJ055 P45JC56 84SJC57 84SJ058 84SJ059 PUSJ070 8U?J"71 P4SJ072 845JC73 84SJ074 84SJC75 84SJ076 84SJ077 84SJ?78 RUSJ079 84SJ081 84SJ082 845J083 84SJ08U 8USJ085 845J086 8USJ087 84SJ088 84SJ089 84SJ090 845J091 V-ppm s 1,000 1,000 1,000 1,500 700 500 700 700 700 700 700 1,000 1,500 1,500 1,500 1,500 1,000 1,500 1,000 1,000 1,000 1,500 1,500 1,500 1,500 1,^00 1,500 1,000 1,500 1,000 1,500 1,000 1,500 1,000 1 ,000 1,000 1,000 700 1,000 1,000 700 1, 500 1,000 1,000 700 W-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Y-ppm s 70 70 50 70 70 100 70 70 70 70 50 50 70 50 50 70 70 70 50 50 50 50 50 50 70 50 70 50 70' 5 Or ' 70 50 50 50 70 70 70 70 70 70 50 70 70 70 50 Zn-ppm s N N N N N N N N N N V N N N N N <500 N N N N N N N N N N N N N N N N N N N N N N N N N N N N Zr-ppm Th-ppm s s 200 150 50 70 100 150 70 100 150 150 150 150 100 70 100 100 100 100 100 100 70 100 100 100 100 100 70 100 100 150 100 100 150 200 100 100 150 100 150 150 200 100 70 70 Table 7. Semiquantitative spectrographic analyses of the magnetic fraction of heavy-mineral concentrates from the U.S. Virgin Islands.--Continued cn Sample 845J092 84SJ093 84SJ094 &USJ095 84SJ096 P43J097 84SJ098 84SJC99 84SJ100 84SJ101 84SJ102 84SJ103 84SJ104 84SJ1G5 84SJ106 64SJ107 84SJ106 84SJ109 R U S J 1 1 0 84SJ2.TO 84SJ201 &4SJ202 8USJ203 84SJ205 84SJ2P6 84SJ2P7 84SJ6C5 84SJ606 R4SJ608 8 4 S J 6 1 3 84SJ614 84SJ622 84SJ625 84SJ629 84SJ631 84SJ639 84SJ641 84SJ646 84?J649 84SJ653 84SJ655 84SJ657 84SJ658 84SJ659 84SJ660 Latitude 18 18 18 18 18 18 18 18 18 18 18 18 18 1B 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 1B 18 18 18 18 18 18 18 18 18 18 21 41 21 43 22 9 21 55 22 18 22 13 22 21 22 3 21 44 20 5B 20 49 20 18 20 44 21 48 18 59 18 4C 18 22 19 8 19 43 20 46 20 47 20 40 20 35 20 22 20 14 19 38 19 47 21 14 21 27 21 57 21 35 20 19 20 3 19 38 19 10 20 44 19 12 20 18 21 17 21 14 19 44 19 50 19 44 19 40 19 47 Longitude Fe-pct. 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 49 49 48 48 45 44 44 43 42 41 41 40 4H 41 43 42 42 41 39 44 44 44 44 44 44 44 45 45 44 43 44 47 47 47 47 45 45 40 41 42 46 47 46 46 46 16 31 25 12 26 55 20 5 32 11 27 6 10 43 15 36 13 21 5 59 56 52 59 48 52 56 55 13 5'4 1?- 16 36 1 39 23 57 33 29 13 22 55 47 51 37 37 s 20 15 30 20 20 10 20 15 15 20 15 30 20 15 15 15 15 20 30 15 10 10 15 15 15 15 5 3 5 5 7 5 7 5 15 5 10 20 20 7 7 7 5 5 5 Mg-pct. s 1.50 5.00 2.00 3.00 5.00 3.00 5.00 3.00 3.00 5.00 3.00 3.00 3.00 7.00 2.00 1.50 2.00 .50 .50 1.50 .50 .70 2.00 1 .00 1.50 1.50 .70 .20 2.00 2.00 2.00 .70 .70 .50 .07 1.00 .30 1.50 .30 3.00 2.00 1.50 1 .50 1.50 1.50 Ta-pct. s 30.00 20.00 5.00 7.00 7.00 20.00 10.00 30.00 20.00 15.00 15.00 3.00 7.00 15.00 15.00 20.00 15.00 7.00 15.00 15.00 20.00 20.00 20.00 15.00 15.00 15.00 5.00 5.00 3.00 7.00 5.00 5.00 5.00 7.00 <.10 7.00 .70 2.00 .10 5.00 7.00 7.00 7.00 7.00 7.00 Ti-pct. s 1 .50 1 .50 1 .50 2.00 >2.00 2.00 >2.00 >2.00 1.50 >2.00 1 .00 2.00 2.00 2.00 1 .00 1.00 .70 >2.00 >2.PO .70 .70 .50 .70 1 .00 1 .50 1 .00 .20 .30 .50 .30 .50 .70 .50 .30 . 10 .30 .30 2.00 >2.00 1.50 .50 .50 .50 .50 .50 Mn-ppm s 7,000 2,000 3,000 3,000 7,000 5,000 7,000 5,000 7,000 5,000 2,000 1,500 2,000 5,000 1,500 1,500 2,000 1,500 5,000 1,500 2,000 2,000 2,000 2,000 2,000 2,000 700 700 1,500 1,000 2,000 1,500 1,500 1,000 200 1,000 1,000 3,000 1,500 3,000 1,500 1,500 1,500 1,000 1,000 Rg-ppm s 1.0 ti V H H ti V N K N N N N N N N N N N N N N N N N N N N N N N N N N 3.0 N N N N N N N N N N As-ppm Au-ppm s 700 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N <500 N N N N N N N N N N s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N B -ppm s 20 <20 50 20 N N 20 20 30 20 20 20 20 70 50 50 50 50 20 50 70 70 50 50 7C 70 30 30 20 20 N 30 30 20 20 30 <20 20 20 20 3C 50 20 50 50 Ba-ppm Be-ppm s 500 700 700 700 300 150 150 200 100 <50 <50 300 500 70 70 100 50 <50 <50 70 70 100 100 100 100 <50 70 <50 <50 200 <50 <50 <50 <50 10,000 <50 500 500 200 200 N <50 <50 N <50 s <2 N <2 N N N N N N N N 2 <2 N N N N N N N N <2 N N N N N <2 N N N N N N N N N 2 N N N N N N N Table 7, Semiguantitative spectrographic analyses of the magnetic fraction of heavy-mineral concentrates from the U.S. Virgin Islands.--Continued Satiple 8USJ092 RUSJC93 8USJP9U 8USJ095 8USJ096 8USJC97 6«*SJC'9fi 8USJ099 814SJ100 8 U S J 1 0 1 814SJ102 814SJ1T3 PUSJtriu eaSJ105 8USJ106 814SJ107 eusjios 8<*SJ1°9 814SJ110 8USJ200 8i4SJ2 r'1 84SJ2f",2 PUSJ2G3 814SJ205 BUSJ206 814SJ207 84SJ605 814SJ606 8USJ608 8i4?J613 814SJ61U 8USJ622 8UFJ625 81SJ629 8HSJ631 8USJ639 81SJ6U1 8USJ6U6 8USJ6U9 8USJ653 8USJ655 8USJ657 8USJ658 8USJ659 8<4?J660 Bi -ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 50 N N N N N N N N N N Cd-pplB S N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Co-ppm s 20 20 100 50 30 20 50 30 20 30 150 100 200 70 15 10 20 15 70 30 <10 <10 15 15 20 15 15 10 50 2.0- 50 20 20 15 <10 15 15 200 70 70 50 30 30 20 30 Cr-ppm s 70 70 50 50 100 70 70 150 7? 700 500 200 200 500 1,000 20 100 100 20 150 50 50 150 700 100 150 100 500 20 300 500 150 150 150 150 70 100 500 100 200 300 200 150 200 100 Cu-ppm s 500 200 1,500 700 500 100 200 150 100 150 700 500 1,000 100 70 70 150 150 50 150 50 30 70 70 70 70 50 50 50 70 150 70 70 70 1,000 50 100 70 70 100 70 70 70 70 70 La-ppm s N <50 <50 N <50 <50 50 N <50 N N N <50 N N N N <50 N <50 N N N <50 N N <50 N N N N N N N N N N N N N N N N N N Mo-ppra s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 30 N N N 300 N 150 N N N N N N N N Nb-ppra s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Ni-ppm s 30 30 30 50 30 20 20 50 50 50 50 5D 70 50 30 20 50 15 20 20 20 15 20 30 20 30 10 10 20 70 200 50 30 50 10 30 15 150 70 70 50 30 20 30 30 Pb-ppra Sb-ppm s 1,500 70 500 50 20 <20 <20 <20 20 20 50 <20 20 <20 20 20 20 30 30 70 50 50 30 50 30 <20 <20 <20 N 50 <20 20 20 <20 300 N 20 100 <20 N <20 <20 <20 <20 50 s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 200 N N N N N N N N N N Rc-ppm s <10 10 <10 10 15 <1G 15 <10 <10 10 <10 ir <10 15 <10 15 <10 10 20 10 10 10 20 10 <10 10 50 50 70 50 70 30 30 30 20 30 15 100 100 70 70 70 70 70 70 Sn-ppm s 100 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Sr-ppm s 700 5,000 300 700 200 300 200 <200 300 500 700 N 500 N 1,000 1 ,000 500 1 ,000 1 ,500 1,500 1 ,500 1,500 1,500 2,000 1 ,500 1 ,500 7 CO 700 <200 300 300 1 ,000 1,000 700 <2CO 1,000 N <200 N <200 1,000 1,000 1 ,000 1 ,000 1 ,000 Table 7. Semiquantitative spectrographic analyses of the magnetic fraction of heavy-mineral concentrates from the U.S. Virgin Islands.--Continued CJ1 Sample 84SJ092 84SJ093 84SJ094 8U3J095 8USJG96 84SJC97 84SJ098 84SJ099 8USJ100 84SJ1M 814SJ102 B4SJ103 84SJ10U 8i4SJ1C5 fii4SJ1"6 8i43J117 8USJ108 8USJ1"i9 P4SJ110 8i4SJ200 84SJ201 84SJ2P2 8USJ203 84SJ205 843J206 84SJ207 84SJ605 84SJ606 84SJ608 8USJ613 B4SJ614 8USJ622 84SJ625 84SJ629 8USJ631 8USJ639 8USJ641 8i4SJ646 84SJ649 8USJ653 8USJ655 84SJ657 8USJ658 8USJ659 84SJ660 V-pnm s 700 700 700 1,000 1,OCO 700 500 700 1,000 1,000 1,*00 700 700 1,000 1,000 1,000 1,000 700 1,000 1,-SCO 700 700 1,500 500 1,000 700 500 200 500 200 300 ^00 500 500 300 500 500 500 700 300 700 700 700 700 700 H-ppn s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Y-ppn s 50 30 50 50 50 50 70 70 70 70 50 100 70 50 50 50 50 100 100 70 70 70 50 70 50 50 30 100 30 5Q- 30 30 30 30 30 20 30 500 300 30 30 30 30 30 30 Zn-ppm s 3,000 N <500 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 1,000 N 700 N N N N N N N N 150 100 50 200 100 150 150 200 100 70 70 100 100 100 100 100 70 200 70 70 70 100 100 150 150 70 50 100 20 70 70 70 70 50 70 50 100 100 100 30 50 70 70 50 50 Table 7. Semiquantitative spectroqraphic analyses of the magnetic fraction of heavy-mineral concentrates from the U.S. Virgin Islands.--Continued tn Faiplp 8USJ665 8USJ666 84SJ670 8USJ67? 8U?J676 8(tSJ68U 8USJ690 8HSJ696 8USJ699 8US.T716 8USJ723 8dSJ725 8USJ729 8USJ733 84SJ735 84SJ736 8USJ73P 8USJ739 8^J739 8"SJ7<41 84SJ742 8I4SJ7U3 84SJ7U6 8i4sroci euscoo? 8(4SCH03 euscoou 8(4SC005 8<4SC006 8USC007 8USC008 8(4SC009 8USC010 8USCD11 8USC012 8USC013 8USC01U 8I4SC015 8USC016 84FC017 8USC018 8(4SC!019 8USC020 8(4?C021 8USC022 Latitude 18 21 25 18 20 59 18 20 49 18 2C 29 18 20 11 18 20 8 18 20 7 18 20 1U 18 19 20 18 20 13 18 20 U2 18 20 (40 18 20 3U 18 20 UO 18 22 1U 18 20 50 18 21 31 18 21 38 18 21 38 18 21 13 18 21 21 18 21 22 18 21 7 17 <46 1 17 46 17 17 (46 8 17 (45 5(4 17 (45 t46 17 (45 11 17 (45 18 17 (45 1 17 <46 2 17 146 17 17 146 <47 17 (46 39 17 (46 51 17 (46 23 17 (46 27 17 <46 33 17 (46 3(4 17 (46 39 17 (45 39 17 (45 (40 17 <45 38 17 <»5 37 Longitude Fe-pct. 6(4 (43 27 614 (4(4 35 6(4 Ut4 21 6(4 14(4 2 6(4 t43 39 6<4 143 33 64 143 50 6U 142 143 6U (42 3 6(4 U«4 (45 6(4 145 15 6(4 (45 35 6<4 (45 33 6<4 (45 25 6(4 1414 55 614 t4<4 35 6U (44 0 6(4 1414 7 6U 14(4 9 6(4 (4t4 15 6(4 (4(4 15 6<4 4(4 8 6(4 14(4 38 6(4 (49 21 614 148 37 6U t49 7 6<4 (49 4t4 614 50 1 6(4 U9 (47 614 (49 3? ' 6(4 (49 19 6(4 (45 149 6(4 (45 (40 614 145 U3 614 U6 10 6(4 (46 35 6(4 t47 30 6(4 147 22 6(4 U7 20 6(4 (4B 7 6(4 147 39 6(4 (46 22 6(4 (46 55 614 146 59 6(4 t47 <42 s 7 7 10 5 50 15 7 10 10 5 5 5 7 7 7 7 10 10 10 7 7 7 7 7 7 10 10 20 10 20 15 20 10 50 10 10 10 10 10 10 7 15 10 7 7 Kg-pct . s 1.00 1.50 1 .00 .50 .15 .20 .20 .50 1.00 2.00 1 .00 .70 .70 .70 1.00 2.00 1.50 .30 .30 1.50 2.00 2.00 1.50 5.00 1.50 2.00 2.00 5.00 2.00 3.00 7.00 .70 2.00 1.50 1.50 1.50 1.50 2.00 1.50 1.00 1.00 1.50 1.50 .70 1.00 Ca-pct. s 7.00 7.00 .10 7.00 .10 2.00 7.00 7. CO 7.00 7. no 7.00 7.00 7.00 7.00 10.00 7.00 7.00 3.00 3.00 7.00 7.00 5.00 7.00 7.00 10.00 7.00 10.00 7.00 7.00 3.00 10.00 15.00 15.00 5.00 7.00 10.00 10.00 10.00 10.00 10.00 10.00 15.00 10.00 15.00 10.00 Tl-pct. s .70 1.00 1.50 .30 .50 .50 .20 .20 .70 .50 .50 .20 .50 .50 .70 .70 .50 .50 .50 .70 .70 .70 1.00 1 .50 1.00 1.00 1.50 2.00 1.00 >2.00 2.00 2.00 1.00 2.00 1.00 1.00 1 .50 .70 1.50 .70 1.00 1.50 .70 1 .00 1.00 Mn-ppro s 1,500 3,000 5,000 1,000 150 2,000 1,500 3,000 1,500 1,500 700 1,000 1,000 1,000 2,000 3,000 1,500 1,500 1,500 2,000 2,000 2,000 3,000 3,000 2,000 2,000 3,000 5,000 2,000 10,000 3,000 3,000 2,000 3,000 2,000 2,000 3,000 2,000 2,000 2,000 2,000 3,000 2,000 3,000 2,000 Ag-ppm s N N N N N 7.0 N <1 .0 N N N N N N N N N 2.0 2.0 N N N N N N N N N N N N N N N N N N N N N N N N N N As-ppm Au-ppro s N N N N <500 <500 N N N N N N N N N N N 500 500 N N N N N N N N N N N N N N N N N N N N N N N N N N s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N M N N V N N N N N N N N B-ppm s 30 3C 30 30 N 20 50 20 30 30 70 30 50 70 20 30 50 50 50 5 r 20 20 30 <20 30 300 30 20 20 <20 20 2CO 100 30 70 70 70 70 50 70 50 100 70 100 100 Ba-ppm s <50 300 1,500 <53 5,000 10,000 500 500 51 <50 <50 <50 <50 <50 100 200 50 5,000 5,000 300 70 50 200 300 <50 150 150 200 200 <50 150 50 150 150 100 100 50 100 50 <50 <50 100 1CO 700 150 Be -ppm s N N 7 <2 N N <2 <2 N N N N N N N N N N N N N N <2 N N N N N N N N N N N N N N N N N N N N N N Table 7. Semiquantitative spectrographic analyses of the magnetic fraction of heavy-mineral concentrates from the U.S. Virgin Islands.--Continued Sanple Bi-ppm Cd-ppm Co-pps> 5=! S S Cr-ppsi Cu-ppm La-ppm s s s Mo-ppm Nb-ppm s s Sn-ppm Sr-ppm s s C71 CO 8USJ665 8 <t ?J 66 8 8U5TJ670 P<4FJ673 84^676 8USJ68U 8USJ690 8USJ696 8U^J699 8USJ716 8USJ723 8I4SJ725 8USJ729 8USJ733 8'»<=:j735 80SJ736 8^SJ738 8USJ730 8 4 F<' J 7 3 9 8 US J 7 U 1 8USJ7U2 8USJ7U3 8USJ7U6 84SC001 84SC002 8USC003 euscoou 84SC005 84SC006 814SC007 8USC006 8USC009 84SC010 84SC011 8USC012 8USC013 8UFC01U 8<4S"015 PUSC016 84SC017 84SC018 PUSC019 814SC020 84SC021 814SC022 N N N N <?Q 30 N N N N N N N N N N N 30 30 N N N N N N N N N N N N N N N N N N N N N N N N N N N N K N N N N V N N N N N N N N N N N N N N N N " N N N N N N N N N N N N N N N N N N N N 30 70 100 20 <10 20 < 1 0 30 150 15 15 20 15 20 20 20 50 15 15 20 30 20 50 70 50 70 70 50 '70 ,30 100 20 20 100 30 20 30 30 30 50 30 30 50 20 30 70 100 200 500 500 150 100 500 100 150 100 100 150 150 100 200 700 100 100 300 500 300 700 300 100 500 70 100 100 200 500 300 150 150 150 200 700 500 200 200 100 1,000 150 1,000 150 100 150 100 70 1,500 2,000 50 500 300 70 70 70 70 70 70 70 100 1,500 1,500 70 70 70 100 100 150 100 100 150 100 100 100 70 70 100 70 50 100 100 70 100 100 70 100 70 100 N N N N N N N N N N <50 N <50 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N <50 N N N N N 150 200 N <10 N N N N N N N N N 200 200 N N N N N N N N N N N N N N N N N N N N N N N N N N K N N N N N N N N N N N N N N N N N N N N N N N K N N N N <50 N N N N N N N N N N N N N N N 20 70 70 20 15 15 10 20 30 15 20 15 20 20 20 30 30 15 15 20 70 70 100 50 20 50 20 20 30 20 150 30 30 30 30 20 30 30 30 50 30 50 30 30 20 N N 70 <20 150 200 <20 150 150 <20 N 20 <20 <20 <20 <20 50 200 200 N <20 <20 30 <20 20 <20 <20 30 20 20 20 50 30 20 30 N 30 20 <20 30 20 50 50 70 300 N N N N <200 N N N N N N N N N N N N N N N N S N N N N N N N N N N N N N N N N N N N N N N N 50 70 30 30 20 15 20 50 50 70 70 70 70 70 20 50 70 20 20 5C 70 50 50 70 50 70 50 70 70 50 100 30 70 50 50 50 70 50 50 50 70 50 50 50 70 N N N N N N N N N N N N N N N 50 N N N N N N N N N N N N N N N N N N N N N K N N N N 50 50 20 700 700 N 700 N 300 700 1 ,000 700 700 1 ,000 700 1 ,000 1 ,000 300 700 500 500 SCO 700 500 300 7CO 300 1,000 1,000 700 3CO 1,500 N 500 2,000 2,000 1,000 2,000 1 ,500 1,000 1,500 1 ,500 2,000 1,500 3,000 2,000 2,000 1 ,000 Table 7. Temiquantitative spectrographic analyses of the magnetic fraction of heavy-mineral concentrates from the U.S. Virgin Islands.--Continued CJ1 CD Sanple 8USJ665 8USJ668 8USJ670 8USJ673 8USJ676 8 <4 S J 6 8 U 8USJ690 PUSJ696 8^SJ699 8'4FJ716 8U.SJ721 8U.SJ725 8USJ729 8 '»:; J 733 8USJ735 8HSJ736 8USJ738 8USJ73Q 8I4SJ739 8USJ7I41 8USJ7U2 814SJ7U3 8USJ746 84SC001 eusc:oo2 8i4S:003 84SCOG4 814SC005 814SC006 8USC007 84SC008 84SC009 84SC010 84SC01 1 84SC012 8I4SC013 8USC014 84SC015 8USC016 84SC017 814SC018 8USC019 8'4?C020 84SC021 84SC022 V-ppm ? 700 700 700 300 1,000 700 300 700 500 700 700 500 700 700 300 ^00 1,000 500 500 ^00 700 500 300 700 700 700 700 700 700 700 700 1,000 700 700 700 500 700 700 700 1,000 700 1,000 700 700 1,000 W-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N V N N N N N N N N N V N N N N NN ' N N Y-ppm s 30 50 50 70 <20 20 30 50 50 30 50 30 50 50 50 50 30 30 30 30 30 30 70 50 30 30 30 50 50 ' 50 <; 50 50 50 <20 30 30 30 30 30 30 30 50 30 30 30 7,n-ppm 5 N N N N 500 500 N 1,500 N N tf N N N N N N 500 500 N N N <500 N * N N N N N N N N <500 700 N N N N N N N N N N 7,r-ppm s 50 70 30 70 70 50 70 70 70 30 70 70 70 70 70 70 30 70 70 70 70 70 70 100 70 50 50 100 50 300 70 200 50 50 50 70 70 50 70 70 70 70 50 500 70 Th-ppn s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Table 7. Semiquantitative spectrographic analyses of the magnetic fraction of heavy-mineral concentrates from the U.S. Virgin Islands.--Continued C75 O Sample 8'tSC023 84SC024 84SCD25 84SC026 84SC028 84S2029 84SC021 84SC030 84SC031 84SC033 84SC034 8i4 cT035S 84SC036S 84SC037S 8USC03PS 84SC340S 64SCC41 84SC042 84SC043 84SC044 84SC045 84SC046 84SC047 84SC048 84SC049 84SC050 84SC051 84SC052 84SC053 84SC054 84SC055 84SC056 84SC057 84SC058 84SC059 84SC060 84SC061 84SC062 84SC063 84SC064 84SC065 84S:066 84FC067 84SC068 84SCP69 Latitude 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 45 50 44 48 45 54 144 1 414 59 45 16 44 17 44 23 44 50 45 10 45 11 45 18 45 8 44 47 45 36 45 47 45 46 46 14 45 50 45 2 44 28 44 49 44 53 45 0 45 3 45 0 43 U7 43 50 43 53 44 21 44 24 44 29 44 5 44 26 44 32 44 21 44 7 44 3 43 26 42 43 42 55 42 51 43 4 43 4 4^ 6 Longitude Fe-pct. 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 47 48 46 48 47 47 48 49 48 48 51 50 50 50 50 52 52 52 53 53 53 52 52 52 51 51 52 51 51 51 51 51 51 51 50 50 50 49 52 52 51 51 51 50 49 57 54 7 55 37 16 26 0 35 37 13 46 24 5 21 20 23 28 4 28 2 36 6 8 42 43 38 59 51 4* - 38 40 24 12 53 19 2 38 0 0 38 4 12 40 58 s 10 7 7 15 15 7 7 10 7 15 7 7 30 15 20 7 10 20 30 30 30 50 50 30 7 7 20 50 10 20 15 15 15 10 7 7 10 10 10 20 15 20 20 10 10 Pg-pct. s 1.50 5.00 2.00 2.00 2.00 2.00 2.00 3.00 7.00 5.00 1.00 1 .50 1.00 1.50 1.00 1.00 1.00 2.00 .70 1.00 1.00 1.00 7.00 7.00 1.50 1.00 1.00 .70 1.00 .70 1 .00 1.50 .70 1.00 1.00 1.00 1.00 1.00 1.00 1.50 2.00 2.00 2.00 1.50 1.50 Ca-pct. s 7.00 10.00 7.00 7.00 7.00 7.00 7.00 7.00 7.00 7.00 7.00 7.00 3.00 5.00 3.00 7.00 7.00 3.00 .50 1.50 3.00 2.00 3.00 5.00 10.00 7.00 7.00 3.00 7.00 5.00 7.00 7.00 7.00 7.00 10.00 10.00 10.00 7.00 10.00 5.00 7.00 7.00 5.00 7.00 10.00 Ti-pct. s 1.00 1 .00 1 .00 >2.00 2.00 .70 .70 1.00 1.00 >2.00 .70 .70 1.00 .70 1.00 .70 .70 1.00 .50 .70 .70 .70 .70 .50 .70 .70 2.00 .50 .70 .50 .70 .70 .50 .70 .70 .70 1.00 1.50 1.00 >2.00 >2.00 2.00 2.00 1.00 .70 Mn-ppm Ag-ppm As-ppm Au-ppm s 1,500 2,000 2,000 3,000 2,000 2,000 2,000 2,000 2,000 3,000 1,500 1,500 1,500 1,000 1,000 1,500 1,000 1,500 700 700 1,500 1,000 1,000 1,500 2,000 2,000 2,000 700 1,500 700 1,500 1,500 1,500 2,000 2,000 2,000 2,000 2,000 1,500 3,000 3,000 3,000 2,000 2,000 1,500 s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N V N N N N s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N B-ppm Ba-ppm Be-ppa s 30 N 70 70 50 50 50 5C N N 70 3C N 20 20 50 50 70 70 500 300 100 50 70 50 70 150 150 5C 100 50 70 70 50 50 50 50 5C 70 70 70 50 70 70 70 s <50 100 50 50 200 100 100 100 <50 70 100 150 150 300 150 150 70 500 500 500 700 300 300 700 <50 50 300 100 100 200 <50 50 300 50 <50 50 50 150 200 200 70 70 200 150 200 s N N N N N N N N N N N N <2 N <2 N N 2 3 5 10 <2 <2 7 N N <2 <2 N <2 N N <2 N N N N N N N N <2 N N N Table 7. Semiquantitative spectrographic analyses of the magnetic fraction of heavy-mineral concentrates from the U.S. Virgin Islands.--Continued Sample 8"SC023 8H5CQ2H 8'»S202S PUSC026 8USC028 8USC029 8U?:~029 8U9C03C 8USC031 SUSC033 BU^COSM 6USC035S 8'»S:036S 8USC037S au^coses 8USC040S 8USCOU1 8<4SCOU2 8USCOU3 suscouu 8USCOU5 84SCOU6 8USCOU7 8USCOU8 8*450049 8U3C050 8USC051 8USC052 8USC053 8USC05U 8USC055 8USC056 8USC057 8UST058 84SC059 8USC060 84SC061 8USC062 8USC063 8USC06U 8USC065 8USC066 8USC067 8USr068 8USC069 Bi-ppm s N N V N M N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Cd-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N K N N N N Co-ppm s 50 50 20 50 50 30 30 50 50 50 30 30 150 30 70 50 70 70 150 150 100 150 150 100 20 20 50 150 '30 150 100 70 50 50 20 30 50 70 30 70 50 50 70 30 30 Cr-ppm s 10,000 700 200 500 1,500 200 200 700 700 500 50 50 1DO 100 150 70 70 2,000 1,500 2,000 5,000 500 200 70 100 70 500 300 100 150 70 70 150 200 70 100 200 200 70 300 1,500 300 2,000 300 100 Cu-ppm s 200 50 100 100 100 70 70 100 100 100 100 70 1,000 300 700 100 300 500 700 1,000 1,000 1,500 1,000 1,000 70 70 300 1,000 150 700 300 200 300 700 50 50 70 100 70 200 200 300 200 150 70 La-ppm s <50 N N N 70 N N N N 50 N N N N N <50 N 200 N N N N N N K K <50 K N N N N N N K N N N N N N <50 N K N Ko-ppm s N N K N N N N N N N N N N N 20 N N N N N H N N N N N N N N N N N N N N N N N N N N N N N N Nb-ppn s N N N N N N N N V N N N N N N N N N N N N N K N N N N N N N N N K N N N N N N N N N N N N Ni-ppm Pb-ppm Sb-ppn Rs-ppm s 50 100 20 50 50 30 30 70 70 50 15 10 100 20 50 30 70 200 1,000 700 500 200 100 200 20 1C 70 150 30 150 30 50 70 20 10 15 30 30 30 50 50 50 70 50 30 s 50 N 70 30 30 30 30 50 N <20 30 N 200 50 100 30 70 70 200 150 200 150 700 500 30 20 70 200 50 150 70 70 100 50 30 20 30 30 30 70 50 70 70 100 50 s N N N N N N N N N N N N N N K N N N N K N K N K N N-. N N N N N N N N N N N N N N N N N N N s 30 70 70 70 50 50 50 70 70 70 20 20 20 20 15 30 50 70 30 30 20 30 20 20 50 20 30 10 50 20 30 50 20 50 50 50 70 50 50 50 70 70 50 50 50 Sn-ppm s N N 70 N N 150 150 N N K N N N N N 50 N N 200 N 300 20 50 20 N N N N N 300 N N N 200 N N N N N N N N N N N Sr-ppm s 1 ,000 <200 1 ,000 700 1,000 1 ,000 1 ,000 700 N <200 1 ,000 700 300 500 500 1 ,000 1 ,500 500 N 500 300 500 700 700 700 700 1 ,000 700 1,000 700 1,000 1,500 1 ,500 1,500 1 ,000 1,000 1,000 700 1 ,500 700 700 700 500 1 ,000 1 ,000 Table 7. Semiquantitative spectrographic analyses of the magnetic fraction of heavy-mineral concentrates from the U.S. Virgin Islands. Continued CO Cample 84S3023 84SC024 84SC025 8453026 84S3028 84S3029 8453029 84?3030 84SC031 84S3033 84r3034 84ST035S 84S3036S 84S3037S 84530385 84530405 8453041 84SC042 84SC043 8453044 84S3045 8450046 8453047 84SC048 8453049 84SC050 84S3051 84S3052 8USC053 84SC054 84SC055 8453056 8453057 84S3058 84SC059 84SC060 8453061 84SC062 84SC063 84S3064 84S3065 84SC066 8453067 8453068 84S3069 V-ppm r 700 700 700 1,000 700 700 700 700 700 700 soo 500 700 700 700 700 500 700 500 700 500 700 700 500 700 700 700 700 700 500 700 700 700 700 700 700 1,000 700 700 700 1,000 700 700 700 700 W-ppm s N N N N N N N N N N N N N N N V N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Y-ppm s 30 30 30 50 50 30 30 50 50 50 30 30 50 50 50 30 30 50 70 50 50 50 30 50 30 30 50 50 30 30 ,. - 30 30 20 30 50 3C 30 30 30 30 50 50 30 <20 20 Zn-ppm s N N N N N N N N N N N N <500 N <500 N N 500 700 700 <500 700 <500 1,500 N N N <500 N N N N N N N N N N N N N N <500 N N Zr-ppm s 50 30 50 70 100 50 50 50 30 50 70 50 70 70 50 50 70 50 50 70 70 50 50 50 70 70 100 50 70 50 50 70 30 70 70 70 50 70 70 100 100 100 50 50 70 Th-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Table 7. Semiquantitative spectrographic analyses of the magnetic fraction of heavy-mineral concentrates from the U.S. Virgin Islands.--Continued CD CO Sample e4S~^70 8MSC071 84SC072 84SC074S 84SC075S R4SC076S 84 rir077S 84SC078S 84SC079S 84sro8&s 84SC081S 84SC082S 8US2083S 84SC08(4S 84SC085S 84SC086 84SC087 84SC088S 84SC089S 84SC090S 84SC091S 84SC093S 84SC094S 84SC095S 84SC096S 84SC098 84SC099 84SC100 84SC101S 84SCT102S 84SC103S 84SC104S 84SC105S 84RC107S 84SC108S 84SC109S 84SC11CS 84SC111S 84SC112S 84Sri13S 84SC114S 84SC115S 84SC116S 84SC117F 84SC118S Latitude 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 43 55 45 34 46 6 45 17 (44 54 44 46 44 37 (44 29 44 19 44 10 44 3 43 59 44 21 (44 46 45 1'4 44 52 44 17 43 37 43 23 42 35 42 54 43 35 43 41 U3 50 44 5 45 9 U5 15 45 13 45 5 44 52 44 15 U4 24 44 8 44 44 44 46 43 40 43 22 43 14 43 8 43 30 4? 49 42 19 42 9 42 35 42 29 Longitude Fe-pct. 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 49 45 45 4fi 46 46 47 47 46 47 47 46 45 46 45 45 45 45 45 47 47 47 46 46 45 44 44 43 44 43 43 43 43 44 44 44 44 44 45 44 42 42 43 43 43 21 50 24 9 26 52 18 46 38 2 28 1 54 3 16 14 17 17 54 13 27 16 49 29 34 30 39 36 4 32* ' 15 39 55 37 18 33 27 51 18 1 45 47 10 23 47 s 10 15 20 10 7 15 15 15 15 15 15 7 10 7 10 7 7 15 7 10 15 10 10 10 20 7 5 10 7 7 10 7 7 7 7 10 15 7 20 10 10 10 7 15 10 Kg -pet . s 1.50 .70 1.00 1.00 1.50 1.00 1.00 5.00 1.50 3.00 2.00 .70 1.00 2.00 1.00 .70 .70 1.50 1.50 2.00 1.50 1.50 3.00 1.50 1.00 .70 1.50 1.50 .70 1.00 1.50 .70 1.00 .70 .70 1.00 1.50 .70 2.00 .70 1.50 1.50 7.00 3.00 5.00 Ca-pct . s 10.00 10.00 10.00 7.00 7.00 5. CO 7.00 7. HO 7.00 7.00 7.00 10.00 10.00 10.00 10.00 10.00 7.00 7.00 10.00 7.00 7.00 10.00 10.00 10.00 10.00 7.00 10.00 7.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 7.00 10.00 7.00 10.00 7.00 7.00 15.00 10.00 10.00 Ti-pct. c; 1 .00 2.00 1.50 1 .50 1 .00 .70 1.00 >2.00 2.00 >2.00 >2.00 1.00 1.00 .70 1.00 1.00 .70 >2.00 1.50 >2.00 >2.00 2.00 1.00 2.00 1.50 1.00 .70 2.00 .70 1.00 .70 .70 1.00 1.00 .70 1.00 >2.00 1.50 >2.00 2.00 2.00 1.50 1.50 2.00 2.00 Hn-ppm Ag-ppm As-ppm Au-ppm s 2,000 1,500 2,000 3,000 2,000 2,000 3,000 3,000 3,000 5,000 5,000 2,000 2,000 2,000 2,000 1,500 1,500 3,000 2,000 7,000 5,000 2,000 2,000 3,000 2,000 2,000 2,000 3,000 2,000 2,000 2,000 1,500 2,000 2,000 2,000 3,000 3,000 2,000 7,000 3,000 2,000 2,000 1,500 3,000 2,000 s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N s N N N N N N N N N N N N N N N N N N N N N N N N N N y N N N N N N N N N N N N N N N N N N B-ppm Ba-ppm ; s 70 50 70 70 70 70 50 20 50 70 20 50 70 50 70 70 70 70 7C 30 50 30 70 50 70 50 50 70 70 70 500 70 50 70 50 70 70 50 70 100 100 70 50 70 50 s 150 150 150 200 200 300 700 <50 70 700 200 50 150 300 150 50 50 70 50 <50 300 150 200 70 200 150 <50 500 150 100 300 50 150 50 50 300 50 <50 N 70 500 300 <50 70 <50 Be-ppm s N N N N N <2 <2 N <2 N N N N N N N N N N N N N N N N N N N N N <2 N N N N N N N N N <2 <2 N N N Table 7. Semiguantitative spectrographic analyses of the magnetic fraction of heavy-mineral concentrates from the U.S. Virgin Islands.--Continued Sample 814^070 8<4SC071 8USC072 8USC07US 8USC075S 8US3076S 84SCC77S 8U r;C078S 8USC079S 84FC080S 8USC081S 8USCOR2S 8USC083S ease oe us 8USC085S 84SC086 8USC087 84SC088S 8HSC089S 84SC090S 8USC091S 84S3093S euscogits 8USC095S 8USC096S 8HSC098 8HSC:099 8USC100 8HSC101S 8USC102S 814SC103S 84SC10US 8USC105S 8USC:107S 8HSC108S analogs 8USC110S 8USC111S RHSC112S 8USC113S 8<4SC11US 8US3115S 84SC116S 8USC117S RUSC11PS Bi -ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Cd-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N If N N N 11 N N N N N N N N N N N N N N N Co-ppm s 30 20 30 20 20 30 50 50 30 150 30 15 20 20 20 15 <10 20 20 30 30 20 30 20 30 10 10 30 '10 r1t> 20 <10 10 15 N 20 20 10 30 20 20 20 20 30 30 Cr-ppm E 300 500 200 1,000 500 500 500 700 2,000 1,000 200 2,000 1,000 200 200 500 700 5,000 300 300 1 ,000 500 500 1,000 1,500 300 300 1,000 300 300 150 200 1,000 700 700 5,000 7,000 5,000 >10,000 1,000 300 1,500 2,000 7,000 5,000 Cu-ppm s 70 70 100 100 70 100 200 70 100 100 70 50 70 70 70 50 30 70 50 50 70 50 70 70 70 50 20 100 50 50 200 70 70 50 20 50 70 70 70 7C 100 70 15 70 70 La-ppm s <50 <50 N <50 N N <50 N N N N <50 N <50 N N <50 N <50 N N <50 N <50 N <50 <50 N N N N N N <50 <50 N N <50 N <50 <50 N <50 N N Ko-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N W N N N N N N N N N N 10 N N N N N N N N Nh-pptn s N N N N N N N N N N <50 N N N N N N N N N <50 N N N K N N N N N N N N N N N N N N N N N N N N Ni-ppm Ph-ppm Sb-ppm s 20 30 30 50 30 30 70 70 70 70 30 50 50 70 30 70 20 50 50 30 50 50 70 30 70 20 50 70 50 30 50 20 50 100 20 50 150 50 100 20 50 70 150 100 100 s 100 70 70 500 50 70 70 N 30 150 50 50 30 150 500 70 20 30 200 20 70 30 20 20 300 30 <20 300 100 20 100 30 70 20 <20 150 500 200 300 50 100 20 70 70 300 s N N N N N N N N N N N N N N N N N H N N N N N N N N N N K N N N N W N N I? N N W N N N N N Sc-ppm s 50 30 30 50 50 20 20 70 30 70 30 50 30 50 50 30 30 30 30 50 50 50 70 50 50 30 50 20 30 30 30 30 50 50 30 50 50 30 70 20 20 50 100 70 70 Sn -ppm s 200 30 N N N N N N N 200 N N N N 1,500 N N N 1 ,000 N 200 N N 70 150 N N 150 N N N N N N N 100 70 100 1 ,500 70 N N N N 70 Sr-ppm s 1,000 1 ,000 1 ,000 1,000 1 ,000 70D 700 <200 700 500 300 1,000 1,000 700 1 ,000 1 ,000 1 ,000 1 ,000 1,000 500 700 1 ,000 500 1 ,000 1 ,000 1,000 1 ,000 1,000 1 ,000 1,000 700 1 ,000 1 ,000 1,000 1,000 1 ,000 700 1,000 700 1 ,000 1,000 1,000 500 500 300 Table 7. Semiquantitative spectrographic analyses of the magnetic fraction of heavy-mineral concentrates from the U.S. Virgin Islands.--Continued C75 en r=JHpl? 84SC07G 8USC071 8I4SC072 8<4?CC7US 8<4SC07SS RI4SC076S 8<4SC!077S 8USC078S 8USC079S 8USC080S 84SC081S 8USC082S 84SC083S 84SC08US 8<4SC:085S 8<4SC086 8USC087 8I4SC088S 8I4SC089S 8USC090S 8I4SC091S 8US3093S e<4Sce9<4S 8USC095S 8USC096S 8USC098 8USCC99 8USC100 8<4SC1P1S 8<4SC102S 84SC1C3S euscious 84SC105S 8<4SC107S SUSCIOeS 8<4S~109S 84SC110S 8USC111S 8USC112S 8I4SC113S edemas 8I4SC115S 8USC116S 8<4RC117S s^srnes V-ppm c; 700 700 1,000 700 700 1,000 1,500 700 700 700 700 700 700 700 700 700 500 700 500 700 700 700 700 700 1,500 700 500 700 700 700 1,000 700 700 700 700 700 700 700 700 700 700 700 300 700 700 W-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Y-ppm s 30 30 50 30 30 50 50 30 30 30 30 30 30 30 30 20 <20 30 30 30 30 30 30 30 30 30 20 30 20' 3 Or - 30 20 30 20 30 30 30 30 30 30 50 50 20 30 30 Zn-ppm s N <500 N N V N N N N N N N N N N N N N N N <500 N N N N N N <500 N N N N N N N <500 N N 500 N 500 N N N N Zr-ppm s 300 300 150 100 50 50 100 70 100 70 70 50 50 50 70 70 50 200 70 70 70 50 50 70 70 70 30 100 100 70 50 50 70 50 70 300 300 70 300 200 100 70 70 70 70 Th-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Table 7. Semiquantitative spectrographic analyses of the magnetic fraction of heavy-mineral concentrates from the U.S. Virgin Islands.--Continued Sample 84scn c>s 8USC120S 8USC121S 84SC122S 8USC123S 84SC124S 84SC125S 84S"126S 84SC127S 84ST128S 84SC129S 84SC130S 84SC131S 84SC132S 84^C133S 84SC134S 84SC135S 84SC136S 84SC137S 84SC138S 8USC139S 84SC140S 84SC141S 84SC142S 845C143S 84SC148 84SC150S 84SC154 84SC156 84SC200 84SC201 84SC202 8USC203 84SC204 8USC205 84SC206 84SC207 84SC208 84SC209 8USC210 84SC212 84SC-213 84SC214 84SC215 84ST216 Latitude 17 42 59 17 42 53 17 43 6 17 43 16 17 43 40 17 U3 57 17 U2 55 17 43 9 17 42 5 17 43 17 17 43 48 17 42 52 17 43 2 17 42 37 17 43 0 17 43 25 17 43 34 17 42 27 17 41 33 17 41 40 17 41 55 17 41 47 17 41 21 17 42 16 17 42 44 17 45 38 17 45 34 17 47 26 17 47 12 17 45 20 17 45 31 17 45 36 17 45 34 17 45 3fi 17 45 18 17 45 13 17 44 48 17 45 12 17 45 0 17 45 1 17 44 36 17 44 17 17 44 6 17 44 1 17 45 41 Longitude Fe-pct. 64 43 50 64 44 16 64 43 33 64 42 54 64 43 29 64 42 43 64 46 52 64 46 27 64 47 17 64 48 8 64 48 20 64 48 3 64 48 51 64 48 40 64 U9 18 64 49 26 64 48 59 64 49 16 64 48 52 64 48 23 64 49 7 64 49 31 64 49 25 64 49 43 64 49 53 64 48 50 64 48 13 64 37 32 64 37 10 64 34 r6' 64 34 22 64 34 31 64 34 39 64 34 48 64 35 1 64 35 33 64 36 25 64 34 20 64 34 35 64 34 53 64 36 37 64 37 7 64 37 24 64 37 38 64 39 12 s 20 20 7 7 20 20 15 30 10 10 15 15 10 10 7 7 5 7 7 10 10 10 10 7 15 7 10 30 50 20 7 15 30 15 10 7 15 15 7 15 15 15 20 7 15 Jig-pet. s 2.00 1.00 .70 1.50 1.00 .70 2.00 2.00 1.50 2.00 2.00 2.00 1.00 1.00 1.00 .70 .70 .70 2.00 1.00 1.50 1.00 1 .00 .70 1.00 5.00 5.00 .70 1.50 1.50 2.00 1.50 1.00 1.50 1.50 2.00 1.50 2.00 1 .50 1 .00 2.00 1.50 1.50 1.00 1.50 Ca-pct . s 7.00 7.00 10.00 7.00 10.00 .70 7.00 7.00 7.00 7.00 7.00 7.00 7.00 7.00 7.00 7.00 7.00 7.00 15.00 7.00 7.00 7.00 7.00 7.00 5.00 7.00 7.00 .20 .70 5.00 5.00 5.00 .50 5.00 3.00 7.00 3.00 5.00 5.00 .70 5.00 2.00 1.50 7.00 3.00 Ti-pct. s >2.00 >2.00 1.00 1.00 1.50 2.00 >2.00 >2.00 >2.00 >2.00 >2.00 >2.00 1 .00 >2.00 .70 .50 .50 1.50 1.50 >2.00 2.00 .70 2.00 .50 1.50 .70 1 .00 .50 .20 .50 .70 .70 .20 .70 .50 1.50 1.00 1.00 .70 .30 1.00 .50 .30 .50 .50 Kn-ppm Ag-ppm As-ppm Au-ppm s 3,000 5,000 2,000 2,000 2,000 2,000 3,000 7,000 5,000 5,000 7,000 5,000 2,000 3,000 2,000 2,000 2,000 2,000 2,000 3,000 5,000 2,000 3,000 2,000 2,000 2,000 2,000 1,000 1,500 3,000 3,000 2,000 2,000 1,500 2,000 1,500 1,500 2,000 2,000 700 2,000 1,500 1,000 2,000 2,000 s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N H N N N N N N N N N N N N s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N B-ppm s 70 50 50 100 300 20 50 50 70 70 70 70 70 70 50 50 50 50 50 30 50 50 50 50 50 <20 30 30 70 500 1,000 1 ,000 500 50 500 200 70 2,000 200 300 150 200 700 50 150 Ba-ppm s 50 <50 50 500 200 1,500 200 100 700 50 <50 70 300 <50 100 <50 50 50 <50 100 300 300 150 150 200 200 500 700 500 700 300 300 100 300 300 200 500 300 300 500 300 700 500 300 700 Be-ppm s N N N <2 <2 5 N N N N N N N N N N N N N N N N N N N N N 7 5 5 <2 <2 7 3 5 N <2 <2 3 5 <2 <2 3 N 2 Table 7. Semiquantitative spectrographic analyses of the magnetic fraction of heavy-mineral concentrates from the U.S. Virgin Islands.--Continued Samp] e 8USC119S 8USC120S 8USC121S 8USC122S 6USC123S 8USC12US 84SC125S 8USC126S 8I4SC127S 8U9C128S 8USC129S 8U9C130S 8USC131S 8USC132S 8USC133S 8USC13US 8USC135S 84SC136S 8USC137S 84SC138S 84SC139S 8USC1UOS 8USC1U1S 8USC1U2S 8USC1U3S 8USC1U8 8USC150S 84SC15U 84R^156 8USC200 8USC:201 8USC2P? 8USC203 8UFC20U 8USC205 84SCT206 8USC207 8USC208 8USC209 8USC210 8USC212 8USC213 84SC2H4 8USC215 8(4SC216 Pi -ppm E N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Cd-ppm Co-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N - N N N N N N N N s 30 20 <10 30 30 70 20 30 50 30 30 50 30 20 15 20 10 15 20 20 30 30 20 20 30 50 30 70 70 1QO 30 50 100 30 30 50 30 50 30 50 50 50 100 20 30 Cr-ppm s 7,000 10,000 700 200 500 300 1,000 5,000 150 200 200 300 200 700 150 70 50 2CO 500 300 500 200 500 70 200 300 200 500 700 1,000 200 1,000 700 150 200 300 700 500 200 200 500 500 150 150 500 Cu-ppm s 70 70 30 100 200 500 150 30 70 50 50 50 70 30 70 70 70 70 50 70 70 100 70 70 100 100 200 700 700 1,000 200 300 700 200 300 150 300 300 200 500 300 700 1,500 100 300 La-ppm s N N <50 <50 N N N N <50 N N N N N <50 <50 N N <50 <50 N N N <50 N K N N N N N N N N N N N N N N (I <50 N K N Mo-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Nb-ppm s N <50 N N N N N N N N <50 N N N N N N N N <50 N N N N N N N N N N N N N N N N N N N N N N N N N Ni-ppm s 70 70 20 30 70 100 100 30 30 20 30 30 30 30 20 20 15 30 50 30 30 50 30 20 30 50 50 200 100 200 100 200 500 100 150 70 150 150 150 150 150 150 300 70 300 Pb-ppm Sb-ppm S~-ppm s 50 300 30 70 100 100 500 70 30 30 30 200 30 20 30 20 150 50 200 200 200 50 200 30 70 <20 <20 100 150 100 30 50 70 50 50 30 70 50 50 100 70 100 150 50 70 s N N N N N N N N N N N N N V N N N N N K N N N N N N N N K N N N N N N N N N N N N N N N N s 50 50 50 50 30 50 50 50 50 50 70 70 30 50 30 30 3C 20 5C 30 50 20 30 20 20 70 70 20 30 50 50 50 20 20 30 50 50 70 30 20 50 30 20 50 30 Sn-ppm s N N N N N N <20 150 N 70 N 50 N 20 N N N N 200 20 30 N 70 N 200 N N N N N N N N N N N N N N N N N N N N Sr-ppm s 700 700 1,000 1 ,000 1 ,000 N 7PO 500 1 ,000 700 700 700 700 700 700 700 70D 700 700 700 700 700 700 1,000 700 <200 N N N N 700 700 N 700 700 1 ,000 700 700 1,000 N 700 500 200 1,500 700 Table 7. Semiquantitative spectrographic analyses of the magnetic fraction of heavy-mineral concentrates from the U.S. Virgin Islands.--Continued Sample 8USC119S 8UFC120S 8USC121S 8U5C122S 8USC123S 8USC12I4S 8<4SC125S 8USC126S 8USC127S 8I4KC128S 84SC129S 8USC130S 8USC131S 8USC132S 8USC133S 8<4SC:13I4S 8<4L;C13SS 8<4SC136S 8USC137S 8I4SC138S 8USC139S 84SC1UOS 8I+SC1I41S 8USC1I42S 8<4SC1i43S auscme 8USC150S 8<4SC15i4 8<4SC156 8USC200 8USC201 8USC202 8USC203 814SC20U 8USC205 8USC206 8USC207 8USC208 8UFC209 8USC210 8USC212 8USC213 8USC2-U 8USC21S RUSC216 V-ppm s 700 700 700 700 1,000 1,000 700 700 700 700 700 700 700 700 500 500 500 500 300 500 500 700 500 500 1,000 700 500 500 500 500 500 500 300 500 300 500 500 500 300 700 500 500 700 500 700 H-pcm s N N N N N N N N N N K N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Y-ppm Zn-ppm s 50 30 30 30 30 70 30 30 30 30 30 30 30 20 30 20 30 <20 30 30 30 30 20 3P 30 30 70 50 30 ' 50 r. ' 30 30 50 30 30 30 30 50 30 50 30 50 50 20 20 s <500 <500 N N N c,00 2,000 <500 N N N N N N N N N N N 2,000 N N N N N N N 1,500 700 700 <500 500 1,000 500 500 N <500 <500 N 500 500 500 700 N <500 Zr-ppm s 100 200 70 70 100 150 300 200 100 100 100 100 100 100 100 50 50 50 50 100 100 70 70 50 50 50 50 70 50 50 30 50 50 50 50 50 50 50 70 30 70 50 30 50 50 Th-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N V N N N N N N N N N Table 7. Semiquantitative spectrographic analyses of the magnetic fraction of heavy-mineral concentrates from the U.S. Virgin Islands.--Continued Sample 84FC218 84SC219 84SC220 84SC221 84SC222 8USC223 84SC224 84ST225 8USC226 84SC227 84SC228S 84SC229 8USC230S 8UFC231 81JF-C232S 8USC233 8USC234 84SC235 8USC236 84SC239 84SC243 84SC240 84SC240S 81502405 84SC241 84SC242 84SC243 84SC244 84SC245 84SC246 8MSC2U7 84SC248 8USC249 84SC251 8USC251S 84SC252 84ST253 84SC254 84SC255 84SC256 8USC257 84SC258 84SC259S 84SC!260S 8USC261S Latitude 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 45 1 145 24 15 5 44 56 44 57 44 57 «45 114 1414 33 1414 13 1414 20 44 6 141 10 143 39 U14 12 U4 26 1*14 50 44 148 145 3 1*5 6 143 59 44 5 1414 5 1414 5 1414 5 143 10 143 13 143 22 143 8 43 146 44 37 1414 30 44 314 145 31 44 26 141* 26 44 28 1414 143 44 27 1414 17 143 514 43 25 143 30 42 3R 146 58 46 21* Longitude Fe-pct. 614 614 64 614 614 614 614 614 614 614 614 64 61* 614 614 61* 61* 614 614 614 614 64 614 614 614 614 614 614 614 64 6U 614 614 614 614 614 614 614 614 64 64 64 61* 64 614 38 37 37 37 37 36 36 38 38 36 36 38 38 39 39 38 38 39 140 141 41 41 141 41 41 140 141 41 140 140 40 140 140 141 141 41 42 142 42 142 142 142 142 i*5 i*5 17 38 40 33 15 46 23 59 39 56 39 0 143 3 33 53 51 3 4 30 17 19 17 19 27 42 142 14 10 39 53 147 19 39 39 47 2 U 37 19 4 13 14 0 1 s 15 20 20 30 15 20 15 20 30 10 7 15 20 30 15 20 15 10 10 7 15 15 10 10 7 15 20 15 10 10 7 15 7 7 5 7 5 5 7 7 20 20 10 15 7 Mg-pct . s 1.50 1 .00 1.00 1.50 1.00 2.00 .70 1.00 1.50 1.00 .70 1.50 .70 .70 1.00 2.00 1.50 2.00 5.00 .70 1 .00 1 .00 1.00 1.00 1.00 1.00 1.50 1.00 1.00 3.00 .70 1.50 3.00 1.00 .70 1.00 .70 .70 1.00 1.00 1.50 .70 .70 1.50 .70 Ca -pet . s 3.00 1.50 1.50 1.50 3.00 3.00 3.00 1.50 2.00 5.00 7.00 3.00 .20 .50 5.00 3.00 3.00 3.00 5.00 7.00 5.00 5.00 7.00 7.00 7.00 3.00 3.00 5.00 5.00 5.00 7.00 5.00 5.00 7.00 7.00 7. no 7.00 7.00 7.00 7.00 2.00 2.00 5.00 3.00 7.00 Ti-pct. s .70 1 .00 1.00 .50 .70 .70 .70 .70 .70 1.00 .70 .70 .50 .50 .70 .70 .70 .50 1.00 1.00 1.50 1.50 1.00 1 .00 >2.00 1.50 2.00 2.00 .70 1.50 .70 1.00 1.50 .70 .70 1.00 .70 1 .00 .70 .70 2.00 2.00 2.00 1.00 .70 Mn-ppm s 1,500 2,000 1,500 1,000 1,500 2,000 2,000 1,500 1,500 1,500 1,500 1,000 1,500 500 2,000 2,000 1,000 1,500 2,000 1,500 2,000 2,000 1,500 1,500 3,000 1,000 2,000 3,000 1,000 1,500 1,500 1,000 2,000 1,500 1,500 2,000 2,000 2,000 2,000 1,500 2,000 2,000 2,000 3,000 3,000 Ag-ppm As-ppm Au-ppm s N N N N N N N N y N N N N N N N N N N N N N N N N N N N N N N N N N N N V N N N N N N 10.0 N s N N N N N N N N N N N N N N N N »J N N N K N N N N N N V N N N N N N N N N N N N K N N N H s N N N N N N N N N N N N N N N N N H N N N N N N N N N N N N N N N N N N N N N N N N N N N B-ppm s 500 70 150 300 70 300 70 70 100 200 50 100 70 70 50 150 150 70 <2C 200 700 700 50 50 70 70 150 200 70 50 50 7C <20 200 70 150 70 150 100 150 <20 200 100 100 70 Ra-ppm Re-pi s 700 700 700 7CO 700 500 700 500 500 300 200 500 1,000 500 500 1 ,000 700 700 500 500 700 700 300 300 200 500 500 700 700 500 500 700 500 700 300 500 500 500 500 500 700 700 500 700 50 s 2 5 5 5 5 <2 <2 <2 3 <2 N <? 2 2 <2 <2 3 <2 N <2 5 5 <2 <2 N 2 5 5 5 <2 <2 5 N 2 N <2 <2 <2 <2 <2 5 5 <2 N N Table 7. Semiquantitative spectrographic analyses of the magnetic fraction of heavy-mineral concentrates from the U.S. Virgin Islands.--Continued Sample 8USC218 8USC219 814SC220 814SC221 8<4S:222 8USC223 614SC225 8USC226 8USC229 8USC231 8USC232S 8'tSC233 814SC2314 814SC235 8HSC236 814SC239 8i4SC?2i40 8USC242 8USC2'43 814SC21414 8U3C245 814SC2148 8USC251 814SC251S 814SC252 814SC2514 814SC255 8USC256 8USC257 8UFC25R 8HSC259S pm N V N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Cd-ppra s N N N N N N N Nf N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Co-ppm s 70 70 70 70 30 70 30 70 70 30 20 70 100 150 200 100 70 50 70 30 50 50 30 30 20 150 70 70 ' 50 ,50 20 50 30 20 20 20 20 20 20 20 50 50 20 100 15 Cr-ppra s 300 1,000 1,000 1,000 500 1,500 2CO 150 300 200 150 1 ,000 500 500 7,000 1 ,000 500 700 700 70 3,000 3,000 70 70 500 7,000 2,000 300 1,000 1,000 700 2,000 10,000 100 70 150 20 20 100 100 5,000 1,000 1,000 30 300 Cu-ppm s 700 500 700 1 ,000 300 700 300 700 1 ,000 300 100 1 ,000 1 ,500 1,000 1,000 700 500 500 200 100 500 500 500 500 100 300 500 200 200 200 150 500 200 200 70 100 100 70 150 100 300 500 100 700 70 La-ppn s N N N N N N N N N <50 <50 <50 N N N N <50 <50 <50 50 <50 <50 <50 <50 N <50 N <50 <50 200 <50 50 N <50 <50 50 <50 <50 <50 <50 N N N <5D <50 Mo-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N < 10 N b-ppm s N N N N N N N N N N N N N N N N N N N N N N N N 100 N N <50 N N N N N N N N N N N N N N N N N Ni-ppm Pb-ppm Sb-ppm s 150 300 300 300 200 300 200 150 200 100 70 300 500 300 500 300 200 300 200 30 300 300 70 70 50 300 200 200 300 300 100 500 300 70 15 70 15 10 50 30 100 200 50 30 100 s 100 70 100 100 70 100 70 150 100 70 30 100 100 100 70 70 70 50 50 20 100 100 150 150 20 100 70 70 50 50 20 100 50 70 <20 20 30 100 30 50 70 100 30 70 5C s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N M N N N N N N N N N N N Sc-ppm s 50 30 50 30 20 70 20 20 20 30 50 50 20 15 15 50 20 20 50 50 30 30 50 50 20 20 20 20 20 50 20 20 20 20 20 30 20 30 50 30 30 20 30 30 30 Sn-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Sr-ppm s 500 200 500 200 700 500 500 5CO 700 700 1,000 500 N N N 500 500 500 700 1 ,000 700 700 1,000 1,000 1,000 700 500 700 1 ,500 500 1 ,000 700 700 700 700 1 ,000 1,000 1,500 1 ,500 1,500 200 500 1,500 300 1 ,000 Table 7. Semiquantitative spectrographic analyses of the magnetic fraction of heavy-mineral concentrates from the U.S. Virgin Islands.--Continued Sample 8U?C218 81SC219 8USC220 81S3221 8UF3222 8USC223 8'4SC221 8USC225 8USC226 8USC227 81SC228S 8USC229 8USC230S 81SC231 8USC232S 81SC233 81SC231 8USC235 81SC236 8USC239 8453210 8USC2UO 8USC2UOS 81SC2UOS 84SC2U1 8USC2U2 8USC2U3 8USC2UU 8USC-2U5 8USC2i4fi 8USC2U7 81SC2U8 8USC2U9 8USC251 8USC251S 81SC252 8US3253 8USC251 8USC255 8USC256 8US:257 81SC258 8i4SC25QS 8US3260S 81SC261S V-ppm s 700 500 c oo 500 300 500 300 700 500 500 500 700 700 1,000 700 700 500 700 700 500 700 700 700 700 500 700 500 700 500 700 500 500 500 500 700 500 500 500 700 700 500 500 700 300 500 W-ppn s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Y-ppn s 50 70 50 50 50 50 50 30 50 30 50 50 50 50 50 30 30 30 50 30 50 50 50 50 30 50 50 50 50' 50 ,, - 30 50 30 30 30 30 30 30 30 30 50 50 30 50 30 Zn -ppm s <500 700 <500 <500 <500 500 500 700 500 <500 N <500 1,000 700 500 <500 500 <500 N N 500 500 N N N <500 500 500 <500 <500 N <500 1,000 N N N N N N N 700 1,000 N N N Zr-ppm Th-ppm s 70 70 70 50 70 50 70 50 50 50 5C 50 70 50 70 50 50 50 70 100 100 100 100 100 200 100 100 300 150 200 100 100 70 70 100 mo 100 100 100 100 70 100 100 70 150 s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Table 7. Semiquantitative spectroqraphic analyses of the magnetic fraction of heavy-mineral concentrates from the U.S. Virgin Islands. Continued Sample 84FC262S 84SC263 8USC264S 84SC264S 8USC267S 84SC268S 84SC269S 8USC270S 8USC271S 84SC272S 8USC27US 84SC275S B4SC276S 84ST277S 84SC278S 84SC27QS 84SC281S 84SC282S 84SCT283S 8USC284S 84SC285S 84SC286S 84SC287S 84SC288S 84SC289S 84SC290S 84SC291S 84SC293S 84SC294S 84SC295S 84SC297S 84SC29BS 84SC299 84SC299S Latitude 17 46 34 17 46 9 17 46 16 17 46 13 17 41 19 17 41 29 17 41 30 17 41 33 17 41 38 17 42 6 17 41 33 17 42 8 17 42 0 17 41 52 17 42 13 17 42 30 17 41 34 17 41 53 17 U2 30 17 42 38 17 45 23 17 44 24 17 43 12 17 43 26 17 43 38 17 U3 41 17 43 49 17 44 26 17 44 39 17 44 32 17 44 8 17 44 10 17 45 45 17 45 45 Longitude Fe-pct. 64 45 64 44 64 44 64 44 64 52 64 52 64 51 64 50 64 51 64 50 64 50 64 51 64 52 64 52 64 51 64 51 64 49 64 49 64 49 64 50 64 41 64 40 64 41 64 41 64 41 64 41 64 41 64 41 64 41 64 41 64 41 64 4V 64 51 64 51 4 59 25 22 49 14 47 53 22 37 25 5 20 43 46 9 27 47 47 13 35 13 40 44 42 36 30 31 4'6 4?- 40 52 2 2 s 10 7 15 15 20 20 15 15 15 15 10 15 15 20 15 15 10 7 15 7 20 20 30 20 20 30 20 7 5 7 20 30 7 7 Kq-pct . s 1 .00 1 .00 1.50 1.50 .70 .70 .70 .70 1.00 .70 .70 1.00 1.00 .70 1.00 1.00 1.50 1.50 1.00 1.50 .70 .70 .70 .70 1.00 1.00 1.50 .70 .50 .70 1.00 .70 1 .00 .70 Ca-pct. s 5.00 7.00 7.00 7.00 3.00 3.00 2.00 3.00 3.00 3.00 7.00 1.50 5.00 2.00 5.00 3.00 7.00 7.00 5.00 7.00 .50 .70 3.00 1.00 .20 2.00 3.00 7.00 5.00 7.00 5.00 .50 7.00 7.00 Ti-pct. s 2.00 1 .00 1.50 1.50 >2.00 >2.00 2.00 1.00 1.00 .50 1.00 .70 >2.00 >2.00 >2.00 1.50 1 .00 .50 .70 .70 .70 .30 >2.00 .70 .50 2.00 1.00 .70 .70 .70 2.00 1.50 .30 .50 Mn-ppin Ag-ppm As-ppn Au-ppm s 3,000 2,000 2,000 2,000 7,000 5,000 2,000 2,000 2,000 5,000 3,000 3,000 5,000 7,000 5,000 3,000 2,000 2,000 2,000 2,000 500 1,500 5,000 1,500 2,000 2,000 2,000 2,000 2,000 2,000 3,000 3,000 2,000 1,500 s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N s N N N N N N N N N N N N N N N N N N N N N N N N N N N H N N N N N N s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N B-ppm s 70 100 70 70 20 50 50 70 53 50 70 70 70 70 70 70 70 70 70 7C 20 20 50 50 50 50 1 ,500 70 50 70 700 70 30 30 Ba-ppm Be-ppa s 300 200 150 150 <50 150 500 500 700 500 1,500 700 <50 N 50 700 500 150 300 200 2,000 700 500 700 700 700 700 700 700 700 700 1 ,000 150 200 s N N N N K N 2 <2 <2 <2 N <2 N N N <2 N N <2 N 7 7 <2 7 5 <2 5 <2 <2 <2 5 7 N N Table 7. Seniquantitative spectrographic analyses of the magnetic fraction of heavy-mineral concentrates from the U.S. Virgin Islands. Continued Sa mple 8USC262S 8USC263 8USC26US 8UGC26US 8USC267S 8USC268S 8USC269S BUSC270S 8USC271S 8USC272S 8USC27/JS 814SC275S 814SC276S &14SC271S 8USC!27BS 8UF',C:279S 8USC281S 8USC282S 8USC283S 8USC28US 8U?C285S 8US~286S 8USC2P7S 8USC288S 8USC289S 8U£C290S 8USC291S 8USC293S 8USC29US 8US3295S 8USC297S 8USC296S 8USC299 8US3299S Bi-ppm e; N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Cd-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Co-ppm s 50 20 50 50 50 70 70 50 50 50 70 50 30 50 50 30 30 30 30 30 70 50 30 30 70 150 100 20 ' 20 r20 30 70 20 20 Cr-ppn s 300 200 500 500 5,000 5,000 3,000 500 500 150 500 300 2,000 5,000 5,000 1,000 300 100 200 200 >10,000 500 7,000 1,500 500 100 1,000 70 100 70 500 300 30 50 Cu-ppn s 300 70 500 500 200 200 200 200 200 150 150 200 150 150 100 100 70 70 100 100 500 700 100 200 700 500 700 100 70 70 500 700 70 100 La-ppm s 100 <50 N N N N <50 N N N <50 N N N N <50 N N N N <50 <50 N N N <50 N <50 <50 <50 <50 <50 N <50 Wo-ppm s N N N N N N N N N N N N N N N N N N N N N N N N 15 15 N N N N N N N N Nb-ppn s N N N N N N N N N N N N N <50 N N N N N N N N <50 N N N N N N N N N N N Ni-ppm s 50 20 50 50 70 70 70 50 50 50 50 50 30 50 30 50 50 20 50 30 500 300 70 70 200 200 300 20 20 15 150 300 10 10 Pb-ppm s 70 50 70 70 50 70 70 70 50 50 50 100 70 50 70 50 300 50 70 50 70 70 70 70 150 100 100 100 20 100 70 100 20 20 Sb-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Sc-ppm s 30 20 30 30 15 20 15 15 15 20 20 15 20 15 20 15 30 20 30 30 50 15 50 15 15 20 20 20 15 20 20 20 20 20 Sn-ppn s N N N N N N N N N N N N 70 N 100 300 100 N N N N N N N N N N N N N N N N N Sr-ppn s 700 1 ,000 1 ,000 1,000 <200 200 200 700 700 700 1,000 300 700 200 1 ,500 700 1 ,000 1 ,000 1,000 1 ,000 N N 700 N N N <20D 1 ,500 1,000 1,000 1,000 N 700 700 Table 7. Semiquantitative spectrooraphic analyses of the magnetic fraction of heavy-mineral concentrates from the U.S. Virgin Islands.--Continued -O! Sample 8USC262S 8URC263 8USC26US 8HSC26US 8USC267S 8UFC268S 8USC269S 8US"27CS 8HS"271S 8US"272S 8«SC27J»S 8USC275S 84SC276S 8HSC277S 8USC278S 8USC279S 8USC281S 8USC282S 8<iSC283S 84SC284S 8USC285S 8USC286S 8USC287S 8USC288S PUSC269S 8USC290S 8MSC291S 8MSC293S 8USC29US 84SC295S 8USC297S 8USC298S 8USC299 8USC299S V-ppm s 700 700 700 700 500 700 700 1,000 1, 000 1,000 1,000 1,000 700 700 700 700 700 700 1,500 700 700 1,000 500 500 500 700 700 700 500 500 700 500 500 500 W-ppm s N N K N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Y-ppm s 50 30 30 30 50 50 70 50 50 50 50 30 30 30 30 50 30 30 50 30 50 30 30 30 30 50 30 30 30 ' 30 r 50 100 20 20 Zn-ppro s N N V N <500 N <500 N N N N <500 <500 500 N N N N N N <500 500 1,500 500 1,000 700 700 700 N N 700 1,500 N N Zr-ppm s 100 100 100 100 200 100 100 200 100 100 70 70 300 500 1,000 100 200 70 70 50 70 50 100 70 30 500 70 100 100 100 100 100 50 70 Table 8. Semiguantitative spectrographic analyses of the hand-magnet fraction of heavy-mineral concentrates from the U.S. Virgin Islands. IN, not detected; <, detected but below the limit of determination shown; >, determined to be greater than the value shown.) Sample Latitude Longitude Fe Mg Ca Ti Mn Ag As Au Ba Bi Cd Co Cr 83ST3D1 83ST001S 83PTOG2 83ST002S 83CT003 83ST003? 83STCOUS 83ST005? R3ST006S 83ST007S 83STOORS 83ST011F 83sroms 83ST115S 83ST016S 83ST018S 83SI026 83ST027S 83FT029S 83^T?30S 83ST031S 83ST03M 83ST035 83STC36 83^1037 83STP3P 83ST039 83^T0140 83^rOU1 83ST014? 83STOU3 83r,TOM5s 83SI"~i»6 835TO'»7S 8 3STOU8 83510*0 83ST055 83ST056 83ST057 P3STO*8 8 3 ^ T 0 6 1 83rTr.fi??; 8J?TC6?S 83ST065 83sr r.67 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 1P 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 20 20 20 20 20 20 19 19 19 18 17 18 18 18 19 19 21 21 214 2U 22 21 21 22 22 23 23 23 2« 22 22 20 19 16 18 19 21 20 21 20 21 22 ?n 21 19 146 146 48 U8 23 23 15 36 2 <41 b2 10 26 2U HI 19 22 52 7 35 1 3U 149 28 12 0 114 141 5 2U 21 14 142 i»U 39 38 0 5<4 16 MO <n 52 20 146 H 1 6U 53 6U 53 6U 52 6U 5? 6U 51 6U 51 6« 50 6U 50 6U *49 6U U9 6U 149 6U 149 6U 52 6« 52 6U 56 6U 57 6U 53 6U 53 6« 5U 6U 54 6U 54 6U 55 6U 56 6U 56 614 58 6« 58 614 58 6U 58 6« 58 6U 58 6U 59 6U 56 614 56 6U 53 6U 53 6U 55 6U 59 65 1 65 2 65 *4 65 3 65 3 65 3 6U 59 6« 51 114 114 1414 1414 58 58 214 13 140 141 2 1414 1U 28 H2 7 21 35 145 29 2U 39 1U 57 5 8 218' 30. 32 0 15 7 146 14 18 10 5U 6 HI 9 UO 36 37 14 20 15 50 30 >50 15 >50 30 7 20 50 50 50 30 30 30 30 30 30 20 5P 30 20 10 30 20 20 20 ' 50 30 50 50 20 30 20 30 20 20 20 15 20 3C 7 30 50 .70 .70 .70 1.50 2.00 1.50 2.00 1.00 7.00 1 .00 .30 .70 .30 1.50 1.00 1.50 .70 1.50 1.50 .70 2.00 .70 1 .50 2.00 .50 1 .00 1.50 1 .00 1 .00 1.50 1.50 .10 3.00 2.00 1.50 2.00 1.50 1.50 1.50 1 .00 .70 .70 .30 .70 .70 10.00 7.00 3.00 5.00 7.00 7.00 10.00 10.00 10.00 5.00 <1.00 .20 .15 5.00 3.00 3.00 3.00 3.00 5.00 5.00 5.00 5.00 7.00 10.00 3.00 5.00 5.00 7.00 3.00 5.00 5.00 .15 7.00 3.00 3.00 5.00 5.00 5.00 5.00 7.00 5.00 3.00 10.00 5.00 3.00 >2.00 1 .50 >2.00 >2.00 >2.00 2.00 >2.00 1.50 2.00 >2.00 1 .00 1.00 1.00 2.00 >2.00 >2.00 >2.00 2.00 >2.00 2.00 2.00 >2.00 >2.00 .70 >2.00 2.00 1.50 >2.00 1 .00 2.00 >2.00 >2.00 2.00 >2.00 1 .00 >2.00 2.00 .70 2.00 1.50 >2.00 >2.00 .50 >2.00 >2.00 2,000 1 ,500 2,000 1,500 1,500 1 ,500 1 ,500 1 ,500 1 ,500 1 ,500 300 1 ,000 1 ,500 2,000 1 ,500 5,000 1 ,500 1 ,500 1,000 1,500 2,000 2,000 2,000 1 ,000 5,000 1 ,500 1,500 2,000 1,500 3,000 2,000 1 ,500 2,000 3,000 2,000 2,000 2,000 2,000 2,000 1 ,500 10,000 10 ,000 700 1,000 700 N N N N N S N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N V N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 150 70 30 N N 30 N 20 N 20 23 N N N 30 20 20 N <20 20 20 70 70 70 20 30 50 50 70 50 30 N 20 N <20 2r 20 70 70 50 30 N If' 70 30 <50 150 70 50 100 70 <50 <5C' N N 5D 150 70 N <50 500 50 70 N 50 200 <50 50 50 <50 <50 50 70 70 300 50 <50 50 <50 <50 <50 <50 <50 50 50 1,500 <50 <50 <50 <50 N <2 N <2 N N N N N N <2 N N N N 2 N N N <2 N N N N N N N N <2 N N 2 N N N V N N «f N N N <2 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 300 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N M N V N N N N 20 20 100 150 200 20 150 150 50 15 <10 30 30 70 20 15 50 50 30 15 150 20 20 20 20 20 20 20 150 30 30 20 30 30 mo 30 20 50 30 20 150 50 10 20 20 500 500 1,500 1,000 1,000 500 >10,000 500 1,000 300 30 200 500 200 70 700 1,000 3,000 300 200 5,000 20 C 100 30C 150 300 10,000 1,000 1,000 50 200 30 1,500 700 7,000 700 500 70 70 70 150 2,000 50 150 1 ,000 Table 8. Semiquantitative spectrographic analyses of the hand-magnet fraction of heavy-mineral concentrates from thp U.S. Virgin Islands. Continued La Mo Nb Ni Pb Sb Sc Sn Sr Zn Zr Th 835T001 83SI001S 83ST002 83ST002S 83ST003 83?:r003S 83rroous 83GT005S R3ST006S 83ST007S 83?rooss 83ST011S 83ST01I4S 83ST015S 83ST016S 83STM8S 83ST076 83ST027S 83?r029S 83ST03GS 83^10315 83rro3<4 83?T^35 83ST036 83ST037 83ST038 B3Sr039 essrouo R3SrOH1 83STOU2 83STOU3 83srou5S 83TTOU6 83SrO'»7S 83srnu8 83STC50 83^1055 83ST156 835IC57 83ST058 8351061 83ST06PS 83ST063S 83ST065 8351067 150 200 300 300 500 150 500 200 70 100 70 70 200 200 100 70 300 500 100 100 7CO 150 200 100 100 70 200 300 1,500 150 200 N 150 100 1,000 300 150 200 200 70 100 200 50 150 100 <50 50 <50 50 N <50 N <5D <T5C N N N N <50 N 50 N N <50 N N <50 <50 N N <50 <50 N N N N N N N N N <50 N N N N N <50 N N N N N N N N N N N N 10 15 20 N N N N N N N 15 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N M N N M N N N N N N N N M N N N N N; ' N H N N N N N N N N N N N M N 20 50 100 70 70 20 200 50 70 30 <10 20 70 50 20 20 70 70 30 15 200 20 20 30 15 10 150 20 100 15 50 <10 70 50 70 70 50 30 20 10 20 50 10 15 20 50 50 300 50 70 20 70 N N 20 70 50 70 <20 50 50 50 <20 20 20 700 100 100 <20 20 <20 100 100 100 <20 200 50 30 20 50 1,500 1,500 70 20 <20 70 20 20 50 70 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 50 30 50 50 50 50 100 70 70 50 10 15 15 50 20 20 20 15 20 20 30 20 30 70 15 20 70 30 20 70 30 70 50 50 50 30 20 50 50 50 20 50 70 50 50 N N 70 N N N N N N N N N N N N N N N N N 200 70 N N V N N 50 N 50 70 N 100 N N 300 200 N 30 N N N N N N 700 1,000 N 300 700 1,000 1,000 1,000 200 700 N N N 500 <200 1,000 N <200 500 1,000 500 300 300 700 200 700 1,000 200 200 <200 <200 N 200 <200 300 <200 300 200 700 1,000 700 500 1,500 500 700 2,000 700 2,000 2,000 2,000 1,000 2,000 1,000 700 1,500 300 700 1,000 2,000 3,000 700 2,000 2,000 2,000 1,500 1,000 1,500 1,500 1,000 3,000 1,000 1,000 2,000 2,000 3,000 3,000 1,000 1,500 1,500 1,000 1,500 1,500 1 ,500 1 ,500 1,500 700 1,500 300 2,000 1,500 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 50 70 50 5C 70 50 70 50 <20 30 70 50 20 30 30 70 50 20 20 20 50 30 30 30 <20 2C 50 50 50 50 20 30 50 30 50 50 30 30 30 30 50 30 30 2f 150 500 N 700 <500 700 N 1,000 N N N N <500 500 N <500 500 500 500 500 N 1,500 N N N 500 \T 3,000 500 <50C <500 700 1,500 N N 1,500 <5GO 500 700 500 N <500 700 N 500 1,500 100 70 100 100 100 70 50 50 20 20 100 50 50 20 70 70 70 30 30 30 50 70 70 50 50 50 50 300 70 50 50 70 100 200 70 50 50 50 50 70 100 100 70 50 20C N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Table 8. Semiguantitative spectrographic analyses of the hand-magnet fraction of heavy-mineral concentrates trom the U.S. Virgin Islands. Continued Sample Latitude Longitude Fe Hg Ca Ti Mn As Au Ba Re Bi Cd Co Cr 83ST06fl P3ST069 83ST070 83ST">71 83ST072 83ST073 83ST07U 835T075 835T076 83ST377 83ST078 8JST079 8351380 &35T081 8351082 83ST083 83SI085 835TO&5 83?T087 83STOR8 83ST089 83^T?90 83SI091 83ST092 83ST093 83STC94 83FT095S 83ST096 83STD97 83ST098 83ST099 83ST102S 83ST103S 83SI104S 83LT105S 83ST106S 83ST108S 83ST109S 83ST110S 83ST1 115 84SJG01 84?JC02 84SJ003 84SJ004 84SJ005 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 19 19 19 19 19 19 20 19 19 19 19 19 20 20 20 20 21 21 21 22 22 21 21 21 21 20 21 21 20 20 20 18 18 21 21 21 21 21 20 19 20 20 20 20 21 ^9 36 140 142 19 27 5 U4 314 12 1 1 30 11 18 12 15 32 17 143 11 q 52 39 32 u 145 15 28 U14 149 58 28 57 33 1414 143 50 314 148 52 27 29 149 53 8 614 6U 614 64 614 64 6U 614 614 614 614 614 614 614 614 614 614 64 614 6U 614 6U 65 65 65 65 65 65 6U 614 64 614 64 64 6U 64 64 64 64 64 64 6U 64 64 64 ^1 51 52 52 53 £3 53 53 54 54 53 54 54 54 54 53 54 55 56 57 57 58 0 1 1 1 0 1 56 57 57 5C 49 50 49 49 52 51 51 5C 47 47 46 46 46 14 40 23 25 29 28 3 0 35 42 59 16 30 24 12 30 30 16 31 8 38 35 55 5 22 22 10 55 55& ' 46 0 55 21 32 42 12 46 45 47 22 6 51 35 30 50 20 30 20 50 50 15 20 30 30 50 15 50 20 30 1C 15 30 20 15 30 50 20 30 15 30 20 30 50 30 30 50 30 30 30 50 20 30 50 20 20 30 50 30 30 .70 .70 .70 1.00 1.00 1 .50 2.00 1.50 1.50 1 .00 1.00 2.00 .70 1.50 1.50 1 .00 1.50 .70 1 .50 .70 1.50 .70 1 .50 1.00 1 .00 2.00 2.00 1 .50 1 .00 2.00 1.50 3.00 1.0C 1.00 1.50 1.50 2.00 1.50 .70 1 .00 .70 1.00 .70 1.50 1.50 2. CO 3.00 3.00 5.00 3.00 3.00 7.00 7.00 5.00 5.00 5.00 5.00 3.00 7.00 7.00 10.00 5.00 5.00 7.00 3.00 3.00 2.00 5. CO 3.00 5.00 3.00 7.00 3.00 3.00 5.00 3.00 5.00 5.00 3.00 5.00 2. CO 3. CO 3.00 5.00 3.00 10.00 5.00 3.00 7.00 7.00 >2.00 >2.00 >2.00 2.00 >2.00 2.00 2.00 1.50 >2.00 >2.00 >2.00 >2.00 >2.00 >2.00 2.00 2.00 2.00 >2.00 >2.00 >2.00 2.00 >2.00 2.00 >2.00 1 .00 1 .00 1.50 2.00 2.00 2.00 >2.00 >2.00 >2.00 .70 1 .00 2. no 2.00 1 .00 1 .00 >2.00 >2.00 >2.00 2.00 2.00 >2.00 1 ,000 1,500 1 ,500 2,000 2,000 5,000 2,000 2,000 1 ,500 1 ,500 3,000 5,000 1 ,500 2 ,000 1 ,000 1,500 1 ,500 2,000 2 ,000 2,000 2,000 2,000 2 ,000 2,000 2,000 2,000 1 ,500 1 ,500 1 ,500 3,000 2,000 1 ,500 1,500 700 2,000 3,000 2,000 1 ,500 1 ,500 2,000 1 ,500 1 ,500 2,000 2, COO 2,000 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N <1.0 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 50 70 50 70 <20 N 5C 70 20 30 N 20 50 50 150 70 50 150 50 20 20 30 100 50 70 70 70 50 N N <2C N 20 500 50 N N 200 700 <20 2 D <20 N N <20 50 70 <50 5D <50 <50 50 N <50 <50 50 300 N 50 <50 <50 70 70 150 <50 50 70 <5D <50 <50 <50 70 50 <50 <50 50 <50 <50 700 100 <50 200 500 150 700 <5C N <50 <53 <50 <2 <2 <2 N N N N <2 N N N N N N N N N <2 N N N N N N N N N N N N N N N 2 N N N N <2 N N N N N N N N N N N N N N N N N N N N N N. N N H N N N N N N N N N N N N N N N N N N N M 7C N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 20 20 20 20 50 150 30 20 20 30 30 30 30 20 20 20 20 30 20 20 30 20 20 20 20 30 20 70 31 50 30 50 30 150 100 70 150 200 150 100 50 50 100 70 50 1,500 150 700 700 2,000 5,000 1,000 700 200 200 200 1,000 300 100 150 100 200 1,000 150 200 70 200 100 100 50 150 50 150 500 200 500 1,500 300 150 5,000 200 5,000 100 1,500 N 2,000 1,500 500 3,000 2,000 Table 8. Semiguantitative spectrographic analyses of the hand-magnet fraction of heavy-mineral concentrates fron the U.S. Virgin Islands. Continued Sample Cu La Mo Nb Ni Pb Sb Sc Sn Zn Zr Th CO 83ST068 83STC69 S3ST070 83FT071 83?T072 83ST073 83ST07I4 83FT075 83ST076 8351077 83PT078 83SI")79 83ST080 83ST081 83ST082 83Sr083 83STD85 83STC86 83STOR7 83ST088 83ST089 83ST090 83Srr91 8351092 83STG93 83FTC9H 83ST095S 83ET096 83ST097 83Sr096 83ST099 83Snn2S 83FT103S essrirus 83ST1C5S 83ST106S 8 3 STUBS 83FT109S s^rnos 83ST111S SUCJ001 8HSJ002 8USJ003 8J4SJ30U 8USJ005 150 100 100 150 700 300 150 70 200 20C 150 200 200 150 200 100 200 1 C,0 200 200 200 200 2^0 200 150 2CO 150 150 150 200 200 150 150 2, COO 1,000 200 300 1,500 1 , 000 1,000 200 150 500 200 200 V N <50 <50 N N N N N N N N N <50 N N N N <50 N N N N N N N N N N N N N N N N N N <50 N <50 <50 <50 <50 N <50 N N N N N N N N N N N N N V N N N N N N N N N N N N N N N N N N N N 100 N N <10 V N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N K N/- ' N N N N N N N N N N N N N N N 30 20 20 50 50 70 50 30 20 30 30 20 70 10 20 15 70 50 20 50 70 50 20 30 20 30 20 70 50 50 70 70 70 200 100 20 100 200 150 20 50 50 200 70 50 50 50 70 70 70 30 500 50 50 50 300 70 300 20 20 20 100 150 30 300 100 50 <20 7^ <20 150 N 50 100 100 200 20 200 70 70 N 2C 100 70 30 50 50 150 200 30 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 50 50 50 70 20 50 70 70 70 50 30 50 50 50 70 30 50 50 50 30 30 30 50 3C 20 30 30 20 20 50 30 70 20 10 15 10 50 15 10 30 70 70 30 70 70 N N 70 300 70 N N 300 N N 70 N <20 N N 150 50 500 N 70 500 N N N N 100 N N 300 N 100 N 700 N N N N N N N N N 500 300 N <200 700 200 700 N <200 700 1,000 300 300 200 <200 300 500 500 1,000 300 700 700 N 300 N N N 200 <200 N N N 500 500 N 500 V 700 N 300 200 N N 1,000 700 <200 700 700 1,000 1,000 1,000 1,000 2,000 1 ,500 1,000 700 2,000 1,500 2,000 2,000 2,000 2,000 2,000 1,000 1,000 1 ,500 1,500 2,000 1,500 3,000 2,000 1,000 1,000 1,000 1,000 1,500 2,000 2,000 1,500 2,000 1,500 700 1,000 1,500 700 1,500 700 1 ,500 1 ,500 2,000 1,500 1,500 2,000 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 50 50 50 50 50 50 50 50 53 50 50 50 30 50 5C 50 30 50 50 3C <20 20 30 30 20 2C 20 <20 2C 30 20 <20 3C <20 <20 N <20 20 20 30 50 50 30 50 70 500 500 1,500 <500 700 1,000 1,5CO N <500 <500 700 <500 700 N N N 700 700 N 700 1,000 1,000 N N N 700 N 700 500 500 500 500 N N 500 N N N <500 <500 N N <500 700 N 70 300 100 100 70 7C 100 50 70 70 70 50 70 70 70 70 50 100 100 70 50 70 50 50 50 50 50 30 30 50 50 20 70 20 1DO <20 50 50 30 50 200 70 70 100 200 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Table 8. Semiquantitative spectrographic analyses of the hand-magnet fraction of heavy-mineral concentrates froa the U.S. Virgin Islands. Continued Sample Latitude Longitude Fe Mg Ca Ti Mn As Au Ba Bi CA Cr CO 84SJ006 84SJ007 84SJ008 84SJ009 84SJ010 84SJ011 84GJ012 84TJ013 84SJ014 84PJ015 84RJ016 84SJ017 84TJ018 84SJG19 8UTJ020 84SJ021 84SJ022 84SJC23 84SJC24 84SJD2b 84SJ026 84SJ027 84SJ02P 84^.1029 84SJ03C 84^:1031 84SJ032 84SJ033 8USJ034 8(4^J035 84SJ335 84SJ037 8U^J038 84SJ^39 ftusjnuo R4SJC41 84^:1042 84SJ043 84SJ044 84SJ045 84SJ046 84SJ048 84SJ049 84SJ050 84SJC51 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 IP 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 21 12 21 12 21 12 21 16 21 57 21 57 21 54 21 38 21 28 21 50 21 27 21 15 21 7 21 20 21 30 21 14 20 57 20 55 20 32 20 42 21 29 21 33 21 9 20 20 20 33 20 43 20 17 20 3 19 44 19 19 19 10 19 3 19 15 19 46 19 50 19 49 19 39 19 32 19 24 19 24 19 26 19 39 19 44 19 35 19 29 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 46 4". 45 45 44 44 43 44 44 43 43 43 42 42 42 43 43 43 42 43 41 41 40 40 40 40 42 42 42 42 42 42 43 43 43 43 43 43 44 43 43 45 45 45 45 5 49 21 9 29 17 40 6 22 6 42 2 48 22 4 24 29 27 55 5 45 27 59 23 26 27 49 31 14£' 23 45 9 4 5 11 20 18 4 50 44 57 48 30 27 30 30 50 20 30 50 >50 50 50 30 15 50 30 50 >50 20 20 20 50 20 30 >50 50 >50 30 50 50 50 30 50 30 30 30 10 50 20 50 30 15 15 50 30 30 30 20 1.00 2.00 1.50 3.00 5.00 2.00 1.50 3.00 2.00 3.00 5.00 .50 3.00 2.00 1 .00 3.00 3.00 1 .50 1 .00 2.00 3.00 .20 1 .00 .70 2.00 .70 1.50 1 .50 1.50 .70 1.00 1.00 1.00 1.00 1.50 1.50 .70 .70 1 .00 1.50 1.00 1.00 1.50 1.00 1.50 5.00 7.00 5.00 7.00 5.00 3.00 2.00 7.00 3.00 5.00 7.00 .70 3.00 3.00 2.00 7.00 7.00 5.00 3.00 5.00 3.00 <.10 2.00 1.50 3.00 1.00 2.00 3.00 3.00 2.00 3.00 3.00 3.00 15.00 5.00 7.00 3.00 5.00 7.00 5.00 3.00 3.00 7.00 7.00 7.00 2.00 2.00 >2.00 2.00 1 .50 >2.00 >2.00 2.00 >2.00 2.00 1 .00 2.00 1 .50 >2.00 >2.00 1.00 >2.00 >2.00 1 .CO 2.00 1 .50 1.50 2.00 >2.00 2.00 1.50 >2.00 >2.00 2.00 >2.00 1 .00 >2.00 >2.00 1 .00 >2.00 2.00 >2.00 >2.00 >2.00 >2.00 2.00 >2.00 >2.00 >2.00 2.00 2,000 2,000 2,000 3,000 3,000 5,000 1,500 2,000 2,000 2,000 2,000 3,000 2,000 10,000 3,000 2,000 2,000 2 ,000 1 ,500 2,000 3 ,000 1 ,500 2,000 2,000 3,000 1,500 2,000 2,000 1,500 5,000 1 ,500 2,000 2,000 2,000 2,000 2,000 2,000 2,000 2,000 3,000 3 ,000 3,000 3,000 3,000 2,000 N N N N N N N N N N N N S N N N N N N N N N N N N N N N S N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N <21 <20 N N N N N N N N N N N N N N N <20 100 N N N 20 20 N N N N N N <50 <50 <50 100 100 300 N 150 <50 <50 200 >J <5D <50 <50 50 150 150 70 200 <50 N <50 <50 <50 <50 50 <50 <50 <50 N <50 <50 N 200 200 <50 50 <50 50 <50 <50 <50 70 <50 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N <2 N 2 N N N N N S N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N V N N N N N N N N N N N K N N N N N N N N N N N N N N 50 100 50 70 150 150 150 150 100 150 100 100 100 150 100 70 70 50 70 50 70 1CO 150 100 70 70 70 150 100 150 200 100 150 20 70 30 20 50 30 20 50 30 70 50 50 2,000 1,500 2,000 150 1,000 3,000 1,500 7,000 5,000 7,000 100 100 100 1,000 2,000 200 300 700 700 1,000 2,000 5,000 70 2,000 300 500 2,000 2,000 700 1,500 300 5,000 500 2,000 700 1,500 500 7,000 1,000 100 200 500 2,000 5,000 500 Table 8, Semiguantitative spectrographic analyses of the hand-magnet fraction of heavy-mineral concentrates from the U.S. Virgin Islands. Continued Cu La Mo Nb Ni Pb Sb Sc Sr Zn Zr Th 84SJOG6 8HSJOG7 8USJ008 8^S J009 8USJ010 8<*sj:n 8USJJ1? 8^?J 01 3 8nsj~ m RUSJ015 8<<SJ016 8USJ017 8USJ018 8USJ019 8«SJ^20 8USJ021 8HSJ022 8USJ023 8HSJ02U 8USJ025 84F-J026 SUSJ027 814SJ028 8USJ029 814SJ030 64SJ031 8USJ032 8i*rJC'33 81SJ03U 8HSJ035 8I4GJ036 fl4SJ337 8^SJ038 8I4SJ039 8USJOUO R4SJOU1 8HSJOH2 RUSJOH3 ensjoai* 8USJOH5 RUSJOU6 8HSJOH8 B^SJOUQ 8USJ050 RURJ051 200 300 150 200 300 300 100 300 200 300 200 70 150 200 150 100 200 200 500 200 70 70 150 200 200 150 200 500 200 500 5ro 150 300 7C 150 100 150 150 100 150 200 150 300 200 300 <50 <50 N N N <50 N N N <50 N N N <50 N N <50 N N N tf N N N N N N <50 N N N <50 <50 <50 N <50 N N <50 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N V N N N N N N N N N N N N N S N N N * N N N N N N N N N N N N N N' Mr N N N N N N N N N N N N N N N 30 30 30 30 100 70 70 70 70 200 30 30 30 50 50 50 70 20 200 70 50 7C 20 50 30 70 70 70 70 - 70 100 100 50 50 50 30 20 50 50 20 70 50 50 50 30 20 20 20 50 70 100 30 300 150 30 30 30 20 20 70 30 50 50 700 50 150 30 70 30 50 30 150 50 70 70 300 70 50 30 70 70 70 70 50 30 70 30 50 50 150 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 50 70 70 100 70 70 50 50 50 70 100 20 70 200 50 100 50 50 15 70 50 15 30 15 50 20 30 30 50 15 20 50 30 30 70 50 50 30 30 20 20 20 50 50 50 N N N N 300 100 N N N N N N N N N N N N 1,500 N N N N N N N 500 N 70 N 700 200 N 70 N 150 N N N 30 300 50 N N N 500 500 300 500 N N N 200 N N 300 N N N N 300 300 <200 200 200 N N N N <200 N <200 N 300 N N 300 300 1,500 500 700 N 300 70 300 200 <200 700 300 500 2,000 2,000 2,000 1,500 1,500 2,000 5,DOO 2,000 3,000 2,000 1,000 5,000 5,000 700 1 ,500 1 ,500 1,500 2,000 500 1,000 2,000 7,000 1,500 2,000 2,000 2,000 1,500 2,000 1,000 3,000 1,000 1,500 1,500 1,000 1,500 1,000 1,000 1 ,000 1 ,000 1 ,500 1,000 3,000 2,000 3,000 1,500 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 50 70 70 70 50 50 50 50 70 70 30 30 50 70 100 50 70 50 20 50 70 30 70 50 50 50 70 70 70 50 30 70 70 50 70 70 70 70 50 50 50 50 70 50 70 N N N N 1,000 K N 700 500 N N 1,000 N N 700 x N N 3,000 N 500 1,000 N N N N 700 700 <500 1,000 1,500 N N N N N 700 <500 N N 2,000 500 500 500 N 30 70 50 70 20 30 70 70 100 70 50 100 50 100 300 70 100 70 20 70 70 30 70 70 70 70 70 70 70 70 20 70 100 50 70 70 100 70 50 70 30 70 70 100 70 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Table 8. Semiquantitative spectrographic analyses of the hand-magnet fraction of heavy-mineral concentrates from the U.S. Virgin Islands. Continued Sample Latitude Longitude Fe Mg Ca Ti Hn Au Ba Pe Bi Cd Cr CD 84SJ053 84FJ054 84SJ055 8USJ056 84SJ057 84SJ058 840J059 84FJ070 84SJ071 R4SJ072 84PJ073 8 4 S J 0 7 '1 84SJ07b 84?JC.76 84SJG77 84SJG76 P4^J079 8USJ081 84SJ082 84FJ083 8 US J 084 84SJ085 84FJC86 8USJ087 84SJ088 84SJ069 84SJ090 84SJC91 84SJ092 84SJP93 84SJ094 84SJ095 84SJ096 84SJ097 84SJ098 84SJ099 84SJ1QO 8USJ101 84SJ102 84PJ103 84SJ104 84SJ105 84SJ1C6 845-J107 84CJ108 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 20 27 20 29 20 19 20 21 70 7 20 4 19 22 20 39 20 32 20 43 20 20 20 9 20 5 20 4 20 7 19 47 20 10 20 50 20 51 20 31 20 28 20 14 19 58 19 UU 21 17 21 28 21 U5 21 38 21 U1 21 U3 22 9 21 55 22 18 22 13 22 21 22 3 21 UU 20 58 20 49 20 18 20 aa 21 48 18 ,59 18 ao 18 22 6U 6U 64 6U 61 6U 6U 64 64 64 6U 64 64 64 64 64 64 64 64 64 64 64 64 64 fiU 64 64 6U 64 64 6U 6U 6U 64 64 64 64 6»4 64 64 64 64 64 64 64 45 45 145 45 45 45 46 46 46 45 46 46 46 46 46 46 47 44 44 4U 4U 44 44 44 47 47 48 49 49 40 48 48 45 44 44 143 42 41 41 140 40 141 43 42 42 32 314 36 141 42 51 148 18 7 40 22 13 16 37 36 40 27 31 32 27 30 23 23 27 36 24 31 0 16 3> 25 12 26 55 20 5 32 11 27 6 10 43 15 36 13 30 50 30 30 50 50 >50 50 30 >50 >50 >50 20 30 30 30 20 50 50 30 30 50 50 50 50 50 50 5P >50 50 50 50 50 20 30 50 30 50 50 20 30 20 20 20 10 2.00 1 .50 2.00 1.50 1 .50 2.00 2.00 1.50 2.00 2.00 5.00 1 .00 3 .00 1.00 1.50 1.50 1.00 1 .50 2.00 2.00 1.50 1 .50 2.00 1 .00 1 .50 1.00 1 .00 1 .50 .70 2.00 .70 .70 2.00 1 .50 2.00 1.00 2.00 1.50 1 .50 2.00 1 .50 3.00 1.50 1 .50 1.50 10.00 5.00 10.00 7.00 7.00 7.00 7.00 10.00 15.00 10.00 10.00 5.00 7.00 5.00 10.00 5.00 15.00 2.00 3.00 5.00 7.00 3.00 7.00 5.00 7.00 10.00 1.50 2.00 1.00 5.00 2.00 1 .00 7.00 5.00 5.00 1.50 5.00 2.00 2.00 5.00 2.00 5. CO 7.00 10.00 10.00 2.00 >2.00 2.ro >2.00 >2.00 >2.00 >2.00 2.00 2.00 2.00 2.00 >2.00 2.00 >2.00 2.00 >2.00 1.50 >2.00 >2.00 >2.00 2.00 >2.00 >2.00 2.00 2.00 2.00 .70 2.00 .15 1.50 .50 .30 2.00 1 .00 1 .50 2.00 2.00 >2.00 1.50 1.50 1 .50 1 .50 1.50 >2.00 .70 2,000 5,000 3,000 5,000 7 ,000 7,000 5,000 5,000 3 ,000 5,000 7,000 1,500 2,000 2,000 2,000 2,000 1,500 5,000 3 ,000 5,000 1 ,500 3,000 3 ,000 1 ,500 2,000 3 ,000 2,000 2,000 2,000 2,000 1 ,000 1 ,500 2,000 2,000 3 ,000 2,000 3,000 2,000 2,000 2,000 2,000 2,000 1,500 3,000 2,000 N N N N N N N N N N N N N N N N N N 300.0 N N N N V N N N N N N 1.5 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 20 <20 20 20 20 N N N N N N <20 N N N N N N <20 N N <20 N N N N N N N 100 70 20 N 50 <50 <50 <50 <50 100 <50 70 <50 <50 70 150 200 50 <50 <50 N 50 <5D 50 V <50 300 <50 50 50 300 100 200 100 200 200 100 150 N <50 50 N N 70 50 N <50 <50 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N <2 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N H 70 100 30 30 20 50 20 50 30 30 30 20 50 30 30 20 70 70 100 50 50 7C 7D 50 150 70 20 150 150 150 150 150 150 150 30 100 70 150 200 150 70 50 30 20 20 1,500 2,000 200 1,000 200 700 700 1,500 300 3,000 700 2, COO 200 700 2,000 ?00 10,000 2,000 7, COO 1,000 7,000 1,000 300 1,000 2,000 500 50 300 200 100 100 100 500 300 100 2,000 1,500 5,000 5,000 700 300 300 >10,000 500 700 Table 8, Semlquantitative spectrographic analyses of the hand-magnet fraction of heavy-mineral concentrates from the U.S. Virgin Islands. Continued Sample Cu La Mo Nb Ni Pb Sb Sc Sn Zn Zr Th CO 8USJ053 8i4SJ05i4 84SJ055 8USJ356 8USJ057 8USJ056 8'l.SJD59 fl4SJn?0 84?J071 84SJT72 84SJ073 8USJ07U 814SJ075 8USJ076 84FJ077 84GJ"76 84SJ079 BUSJ081 814SJT82 P4PJOB3 84SJOPI4 8USJ085 84SJ086 8USJ087 8USJ088 84SJ089 84SJ090 8USJ091 8USJ092 8USJ093 8USJ09U 84SJ095 8USJ096 8USJ097 84SJ098 6USJ099 84SJ100 8I4SJ101 8USJ10? 8<4SJ103 84SJ10<4 814SJ105 8USJ10fi 8USJ107 8USJ108 300 300 300 200 300 500 500 300 300 ^00 5oo 70 300 200 200 200 150 200 300 3^0 200 300 300 200 200 150 1,000 300 300 1,000 1,000 1,000 1,000 300 50 150 200 100 200 200 300 150 100 200 70 <50 N N <50 N N N N N N N N <50 N <50 N <50 N N N N N N N N N N N N N N N N N N N <50 N N N N N <50 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N, N K N N N N N N N N N N N N N 200 70 50 30 20 30 50 30 20 30 70 30 50 70 50 50 70 30 70 30 30 50 70 20 70 30 150 70 200 ' 150 150 100 70 70 20 70 70 70 100 70 50 50 100 70 50 30 7C 30 <20 20 30 1,000 30 20 70 1,500 50 50 70 100 1 ,500 50 30 1,OOC 3fi 30 30 70 30 50 50 70 20 1 ,500 70 200 100 <20 50 20 20 70 <20 70 <20 <20 20 50 30 <20 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 70 50 50 50 30 30 50 50 70 50 30 70 70 30 70 50 100 20 50 30 70 30 50 20 70 150 20 15 <10 30 <10 <10 70 50 50 20 50 70 50 70 30 70 50 70 50 N 20 N N N N C 0 N N 20 200 200 N N 100 30 N N N N N N N N N K N N >2,000 100 N 50 N N N K 200 N N N N N 150 N N 1,000 200 700 300 <200 N N 700 700 500 200 300 500 300 1,000 500 1,500 N <200 <200 500 N 300 500 700 1,000 N N N 700 N N 300 <200 N N <200 N N N 200 N 700 500 <200 1,500 3,000 2,000 5,000 5,000 7,000 5,000 3,000 3,000 5,000 3,000 1,000 1 ,500 2,000 1,500 1,500 1,000 2,000 1,500 1,500 1,500 2,000 2,000 1,000 2,000 2,000 1,500 5,000 500 1,500 700 700 1,500 1,000 2,000 5,000 1,500 2,000 3,000 1,000 1,500 2,000 1,500 2,000 1,500 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 70 50 50 50 50 50 50 30 50 30 20 100 50 50 50 50 50 50 70 50 70 50 70 50 70 100 50 20 N 30 30 30 50 50 70 30 70 50 50 100 70 30 50 70 30 N 1,000 N <500 <500 N N 500 N 500 700 N N 500 <500 N 500 N 500 N <500 700 700 N N N N <500 3,000 N N 5,000 N N N N <500 N N N N N <500 N N 50 70 50 70 70 70 30 70 30 70 50 100 100 100 70 50 70 70 70 70 50 70 70 70 70 70 30 50 N 50 30 30 50 70 20 50 70 70 50 70 70 50 50 100 30 N N N N N N N N N N N K N N N N N N K K N N N N N N N N N N N N N N N N N N N N N N N K N Table 8. Semiquantitative spectrographic analyses of the hand-magnet fraction of heavy-mineral concentrates from the U.S. Virgin Islands. Continued Sample Latitude Longitude Fe Mg Ca Ti Mn Ag As Ba Be Bi Cd Co Cr 8USJ109 8USJ110 8USJ200 8I4SJ2C1 8USJ202 8USJ203 8USJ2T5 RUSJ206 8USJ207 8USJ6M 8USJ605 B^ J606 8l4SJ6C>8 8 US J 61 3 8^J61l* 8DSJ62? 8USJ625 8USJ629 8KSJ631 8USJ639 8US.76U1 8<4?J6l46 8USJ6U9 8USJ653 8USJ655 814SJ657 8USJ658 814SJ6S9 8USJ660 814SJ665 814SJ668 8USJ670 814SJ673 814SJ676 814SJ6814 814SJ690 814SJ696 8(4^699 8IJSJ716 8USJ723 814SJ725 814SJ729 8USJ733 814SJ735 8USJ736 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 19 19 20 20 20 20 ?0 20 19 19 19 21 21 21 21 20 20 19 19 20 19 20 21 21 19 19 19 19 19 21 20 20 20 20 20 20 20 19 20 20 20 20 20 22 20 8 14? 146 <47 <40 35 22 1(4 38 t*3 (47 114 27 57 35 19 3 38 10 1414 12 18 17 114 1414 50 1414 UO 147 25 59 U9 29 11 8 7 114 20 33 (42 140 3«4 (40 114 50 6(4 614 6(4 6(4 6(4 6(4 614 614 6(4 614 6(4 6(4 614 614 6(4 6<4 614 6(4 614 614 614 614 6U 614 614 614 6(4 614 6*4 614 6(4 614 614 6U 6U 6U 614 614 6U 6(4 6U 6U 614 6U 6U (41 21 39 5 1414 59 (414 56 (4(4 52 U(| 59 1414 148 14(4 52 (4(4 56 (46 23 (45 55 U5 13 (4(4 514 U3 12 U14 16 147 36 U7 1 (47 30 (47 23 (45 57 145 33 140 29 (41 13 142 22 (46 55 (47 147 146 51 U6 37 (46 37 143 27- (4U 35 14<4 21 1*1* 2 (43 39 (43 33 (43 50 (42 U3 142 3 1414 (45 (45 15 145 35 145 33 (45 25 1414 55 UU 35 >50 >50 30 20 20 30 30 30 50 50 20 20 20 50 30 50 10 30 30 50 20 30 30 50 50 15 20 20 20 30 50 20 50 30 50 30 20 30 30 30 20 15 50 30 30 .50 .50 1 .50 1.50 1 .00 1 .00 1 .50 1.50 1 .00 .30 .30 1 .50 1.50 .50 .70 .50 .70 .70 .15 .70 .50 .30 .30 .70 .70 1.00 1 .00 .70 .70 1.00 .70 2.00 .30 .15 .20 .50 .20 .70 .70 .70 .70 1.00 1.00 .70 1.00 .10 1.50 5.00 5.00 5.00 5.00 5.00 5.00 7.00 .70 .50 3.00 1.50 1.50 1.00 .30 1.00 2.00 < . 10 2.00 . 15 .20 <. 10 .30 2.00 3.00 3.00 3.00 2.00 1.00 .20 < . 10 .10 <. 10 .15 .70 .50 .70 2.00 1.00 1.50 5.00 2.00 .30 1 .00 >2.00 >2.CO 2.00 2.00 1.00 >2.00 >2.00 >2.00 >2.00 .10 >2.00 .50 .70 .70 .70 .20 .50 2.00 .70 .30 1 .00 .70 1 .50 .70 1.50 >2.00 1 .50 >2.00 >2.00 1.50 .20 .10 1.00 .70 2.00 1 .00 .30 1.50 .20 >2.00 .70 1.00 1.50 .70 2.00 500 5,000 2,000 2,000 2,000 2,000 3,000 3,000 3,000 1 ,500 2,000 1 ,000 700 700 1 ,000 1 ,000 1 ,000 1 ,000 700 2,000 700 700 700 1 ,000 2,000 2,000 2,000 2,000 2,000 1 ,500 700 2 ,000 1,500 200 700 1 ,000 700 1 ,000 1 ,000 1 ,000 1 ,500 1 ,000 1 ,000 2,000 2,000 N N N «f N N N N N H N N N N N N N N < 1 . 0 N N N N N N N N N H N N N N N 1.5 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N <500 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N <20 <20 N N N N N N <20 N N N N N N N N N N N N N N N N N N N N N N N N N N <2Q N N 20 H <20 N N N 7 50 50 <50 50 <50 <50 300 <50 <50 <50 2DO 50 N 70 <50 10,000 500 200 <50 N <5C N 50 50 N N <50 N 300 <50 2,000 5,000 100 <50 300 <5D N <50 150 100 300 <50 N N N N <2 N N N N N N N N N N N <2 N N " N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N f, N N N N N N N 20 V N N N N N N N N N N N N N N 30 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N H N N 20 200 100 30 50 70 50 5C 20 100 20 150 50 150 50 200 20 30 20 100 20 20 100 150 100 50 150 30 50 70 100 50 70 15 20 150 20 150 100 100 300 50 300 150 100 700 50 1,000 >10,000 500 500 500 200 1,500 200 500 70 70 200 7,000 700 300 2,000 200 500 300 1,000 70 500 150 150 150 150 300 300 100 100 >10,000 300 200 70 300 1,000 300 500 300 700 300 200 1,000 Table 8, Semiquantitative spectrographic analyses of the hand-magnet fraction of heavy-mineral concentrates from th*» U.S. Virgin Islands. Continued Sample La Mo Nb Ni Pb Sb Sc Sn Sr Zn Zr Th CO 8USJ109 8USJ110 8USJ200 8USJ201 8^SJ20? 8USJ203 8'4SJ2 r'5 8USJ206 8USJ207 eusjeoi 8 US J 605 8UF-J6C6 8<4SJ6r,8 8USJ613 8USJ61U 8U C J622 8U3J62S 8U?J62Q 8UFJ631 8USJ639 8USJ6U1 8USJ6U6 8USJ6U9 8USJ653 8USJ655 8USJ657 8USJ658 8USJ659 8USJ660 8USJ665 8USJ668 8USJ670 8USJ673 8USJ676 8USJ68U 8USJ690 8USJ696 8USJ699 8USJ716 8USJ723 8USJ725 8USJ729 8USJ733 8USJ735 8USJ736 30 100 200 200 200 200 200 200 200 2CO 70 300 70 100 100 c oo 70 70 500 150 100 30 70 70 70 100 150 100 150 100 500 70 200 700 1,500 300 150 1,500 300 100 300 100 150 300 150 N N N <50 N N N N N N N N N N N M N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 300 N 70 N N N N N N N N N N N N 70 150 N N N N N N N N N N N N N s N N N N N N N N N N N N N S N N N N N N N N N NN' N'. N N N N N N N N N N N N N N N <10 10 70 50 20 50 50 20 50 200 100 50 20 150 70 300 50 100 50 100 20 20 20 70 50 70 50 70 100 - 15 100 15 150 20 50 50 10 300 70 50 70 20 70 70 50 30 50 70 70 70 50 50 30 50 1 ,000 70 <20 <20 200 <20 50 <20 <20 500 100 50 70 N N N 100 <20 N 500 N N N 70 300 200 70 50 3,000 70 <20 100 <20 <20 70 100 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N <200 N N N N N N N N N N 70 30 30 100 70 50 30 50 50 <10 20 30 20 <10 15 <10 10 15 20 10 10 15 50 15 15 20 20 15 15 50 15 15 10 15 10 15 15 15 15 15 10 50 50 10 15 N N 300 N N N N N N >2,000 150 N N 500 N N N N N N N 150 N N N 100 100 N 100 N N N 150 N N N 50 150 2,000 N N N N 30 200 N N 700 500 700 300 200 200 500 N N S N 200 N N 200 N N <200 N N N N N N N N N N N N N N N N N N <200 N N 500 N N N 1,500 1,500 2,000 1,500 1,500 3,000 3,000 5,000 5,000 300 700 700 5,000 700 2,000 300 700 2,000 700 500 700 700 1,000 3,000 1,500 1,500 1,000 3,000 1,000 1,000 500 300 700 700 700 1,000 700 500 200 2,000 700 700 1,500 1,000 700 N N N H N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 100 50 50 70 50 50 50 50 70 N 300 20 N <20 20 N 2C N 30 N 50 50 150 N N 30 <20 20 <20 20 <20 <20 20 N 20 <20 20 20 N <20 N 30 30 N <20 N N N 500 N N V N <500 2,000 1,000 N N <500 500 500 N 500 1,000 10,000 700 700 500 <500 1,000 700 700 700 1,500 <500 <500 <500 3,000 700 700 700 1,000 1,500 N N <500 N N N <500 200 20 50 70 50 70 70 70 50 N 70 <20 30 <20 50 V 100 N 70 N 70 50 70 20 <20 70 N 50 100 70 N N N 50 50 N 70 50 N 50 N N N 70 50 N N N N N N N N N N N N N N N M N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Table 8. Senticjuantitative spectrographic analyses of the hand-magnet fraction of heavy-mineral concentrates from the U.S. Virgin Islands. Continued Sample Latitude Longitude Fe Wo Ca Ti Mn Ag Au Ba Be Bi Cd Co Cr 845J738 8USJ739 84FJ739 84TJ741 84SJ742 8 4.^ J 74 3 8USJ746 R4SC001 84FCOO? 84ST^03 84SC304 84SC005 84SCTD06 84SC007 84SC008 ensrc.oo euszolo 84SCC1 1 84SC012 84SC013 84SC014 84ST015 84SC016 84SC017 84SP018 64SCC19 B4SC020 84SC021 84SC022 84SC023 84SC024 843C025 84SC026 84SC02P 84SC029 84SC029 84SC030 84SC031 84SC033 84SC034S 84SC035S 84SC036S 84SC037S 84SC038S 84SC04C 18 18 18 18 18 18 18 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 21 31 21 38 21 3R 21 13 21 21 21 22 21 7 46 1 46 17 46 8 II 5 54 45 46 45 11 45 18 45 1 46 2 46 17 46 47 46 39 46 51 46 23 46 27 46 33 46 34 46 39 45 39 45 40 45 38 45 37 45 50 44 48 45 54 44 1 44 59 45 16 44 17 44 23 44 50 45 10 45 10 45 18 45 8 44 47 45 3* 45 47 64 44 0 64 44 7 64 44 9 64 44 15 64 44 15 64 44 8 64 44 38 64 49 21 64 48 37 64 49 7 64 49 44 64 bO 1 64 49 47 64 49 39 64 49 19 64 45 49 64 45 40 64 45 43 64 4f 10 64 46 35 64 47 30 64 47 22 64 47 20 64 4B 7 64 47 39 64 46 22 64 46 55 64 46 59 64 47 42 64 47 57r 64 48 54 64 46 7 64 48 55 64 47 37 64 47 16 64 4B 26 64 49 0 64 48 35 64 48 37 64 51 13 64 50 U6 64 50 24 64 50 5 64 50 21 64 52 20 30 50 50 50 20 20 30 50 50 50 50 50 >50 50 50 >50 >50 50 >50 50 >50 50 >50 >50 >50 50 >50 50 >50 - 50 50 50 50 50 >50 >50 >50 50 >50 >50 50 >50 50 30 >50 .70 .20 .20 1.50 1 .50 1 .50 1.50 1.50 1 .00 1 .50 1 .50 1.50 1 .00 1 .00 1.50 .70 1 .50 .70 1 .00 1.00 .50 .70 1 .00 1 .00 1 .00 1 .00 1.00 1 .00 .50 .50 2.00 1 .50 .70 1 .00 1.00 1.00 1 .00 1.50 .70 .70 .50 1.00 1.50 .70 .50 1.00 .15 . 15 1.50 3.00 2. CO 2.00 3.00 3.00 3.00 3.00 3.00 2.00 1.50 2.00 1.00 1.50 1.50 2.00 2.00 2.00 2.00 2.00 2.00 2.00 1.50 1.50 2.00 1.50 1.50 2.00 2.00 2.00 1.00 1.50 1.50 1.50 1.50 1.00 1.00 .70 1.00 1.00 .50 .30 1 .50 1 .50 1 .50 1 .50 1 .50 2.00 1.00 >2.00 >2.00 2.00 >2.00 >2.00 >2.00 >2.00 >2.00 >2.00 >2.00 >2.00 >2.00 >2.00 >2.00 >2.00 >2.00 >2.00 >2.00 >2.00 >2.00 >2.00 >2.00 >2.00 >2.00 >2.00 >2.00 >2.00 >2.00 >2.00 >2.00 >2.00 >2.00 2.00 2.00 >2.00 >2.00 >2.00 .70 1 ,000 700 700 1 ,500 1 ,500 2,000 1 ,^00 3,000 2,000 2 ,000 3,000 3,000 2,000 5,000 3,000 1 ,000 1 ,000 1 ,000 1 ,000 1 ,000 1 ,500 1 ,000 1 ,500 2,000 1,500 1 ,000 1 ,000 1,500 2,000 1 ,500 2,000 1 ,000 3,000 3,000 3,000 3,000 3,000 2,000 3,000 1,500 1 ,500 2,000 2,000 1 ,000 1 ,000 N < 1 . 0 <1 . 0 V N N N N N N N N H N N M N N N N N N N N N N N N N N N N N N N N N K K N N N N N N N <500 <500 N N N N N N N N N N N N N N N K N N N N N N N N N N N N K N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N K N N N N N K N N N N N N N N K N N N N N N N K N N N N N N N K N K N N N N N K N N N N K N N N N N N N N N N N N N N N K N <50 3,000 3,000 50 <50 <50 <50 <50 50 50 <50 150 100 <50 <50 <50 5D 50 50 150 50 50 53 <50 <50 <50 <50 50 <50 <50 <50 100 50 70 50 50 <50 <50 N <50 <50 <50 200 N 200 N N N N K N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N K K N N N N N N N 70 70 N N V N N N N N N V N N N N N N N N N N N N N N N N N N V K N N N N N N N N N N N N K N N K N K N N N N N N N K N N N N N N N N N N N N N N N N N N N N N N N K N N V N N K N 150 50 50 70 70 50 50 150 100 50 70 50 100 100 150 150 100 70 70 50 70 30 50 150 100 mo 70 150 100 50 150 70 100 150 150 150 150 150 150 150 150 150 150 70 150 2,000 500 500 1,500 1,500 7,000 7,000 1,000 5,000 1,500 500 300 7,000 500 2,000 1,500 1,500 1,000 2,000 700 5,000 1,500 2,000 7,000 7,000 5,000 2,000 2,000 5,000 7,000 2,000 1,000 2,000 3,000 5,000 5,000 1,500 2,000 1,500 500 700 1,000 1,000 500 300 Table 8, Semiquantitative spectrographic analyses of the hand-magnet fraction of heavy-mineral concentrates from the U.S. Virgin Islands.--Continued Pan pie Cu La Mo Nb Ni Pb Sb Sc Sr Zn Zr Th 8USJ738 8U? J739 814SJ739 8USJ7U1 8 ^4 ? J 7 ty 2 8 4^ J 74 3 8USJ7U6 8USC001 8USC002 euscoo^ eas::oou 8USCOG5 euscnofi 8USC007 8u?coo8 8U?C009 8USC010 8USC01 1 814ST01 2 8USC01 3 8 U S *"* 0 1 £4 8 4 S C 0 IS 8USC016 8UFC017 8UFC018 8USC019 8USC020 8USC021 8USC022 8USC023 8USC02U 8USC025 8USC026 8USC028 8USC029 8USC029 8USC030 8USC031 8USC033 8USC03US 8USC035S 8US:036S 8USC037S 8U5"038S 8USCOUO 150 1,500 1 ,500 70 70 100 100 150 150 100 1CO 70 1oO 70 100 100 100 70 100 70 100 100 100 150 150 100 100 100 150 1CO 100 150 150 150 150 150 100 70 70 300 200 150 200 100 500 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 200 2CO N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N If N NN' Nr N N N N N N N N N N N N N N N 100 150 150 50 70 100 70 70 70 50 30 30 1"0 70 150 100 100 70 70 50 150 70 70 150 150 70 100 100 150 - 100 150 1PO 150 100 150 150 150 150 150 150 100 150 150 70 700 70 300 300 N 200 100 150 20 30 30 20 20 30 30 3& 50 30 20 30 30 50 30 30 70 100 70 50 30 150 30 20 100 50 70 100 100 100 <20 <20 500 20 70 70 <20 100 N <200 <200 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 15 10 10 15 20 15 15 30 20 30 20 15 15 15 20 20 30 50 50 20 20 15 30 20 30 20 30 30 20 10 20 20 15 20 15 15 20 20 15 10 10 20 15 15 <10 70 N N N <20 N 150 N N 70 N N N N N N N N N N N N N N N N N N 150 N N 70 N 300 200 200 100 N N >2,000 N N N N 500 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 1,500 700 700 1,000 1,500 1,500 1,000 5,000 3,000 2,000 5,000 3,000 5,000 5,000 5,000 5,000 5,000 3,000 3,000 2,000 3,000 2,000 3,000 3,000 3,000 3,000 3,000 3,000 3,000 3,000 5,000 5,000 5,000 3,000 3,000 3,000 5,000 5,000 7,000 2,000 2,000 5,000 3,000 3,000 1,500 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 30 20 20 30 20 30 30 <20 <20 <20 <20 50 <20 N N <20 <20 <20 <20 <20 N <20 <20 20 <20 <20 N <20 N <20 <20 N 20 <20 <20 <20 N N <20 <20 <20 <20 20 <20 <20 N 700 700 N <500 1,000 700 500 1,000 <500 700 500 500 700 700 1 ,000 700 700 500 700 1,500 700 1,000 1,500 1,000 700 1,000 1,000 1,500 700 500 <500 700 1,000 2,000 2,000 1,000 700 1,000 1,000 500 1,000 1,500 500 2,000 30 50 50 70 70 50 30 20 30 <20 N 20 <20 70 30 30 20 50 20 50 20 50 20 20 N <20 50 70 30 30 70 20 30 50 50 50 <20 N 50 <20 N N N <20 20 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Table 8. Seraiquantitative spectrographic analyses of the hand-magnet fraction of heavy-mineral concentrates fro« the U.S. Virgin Islands. Continued Latitude Longitude Fe Mg Ca Ti Hn Ag As Au Ba Re Bi Cd Co CO 84SCC41 84SC042 84SC043 84SC044 84SC045 8 USCr 46 P4SC047 84SC048 84SC049 P4SCP50 84?:051 84SC052 84SCT53 84FC054 84<^055 P4SCT56 84SC057 84SC058 84SC059 84SC060 84?C061 84SCD62 84SC063 84SC064 84SC065 84SC066 84SC067 84SC068 84SCC69 84SC070 84SC071 84SC072 84SC074S 84SC075S 84SC076S 84SC077S 84SC078S 84SC079S 84SC080S 84SCC81S 84SCOR2S 84SC083S 845CP84S 84SC085S P4SC086 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 45 46 46 14 45 50 45 2 44 28 44 49 44 53 45 0 45 3 45 0 43 47 43 50 43 S3 44 21 44 24 44 29 44 5 44 26 44 32 44 21 44 7 44 3 43 26 42 43 42 55 42 51 43 4 43 4 43 6 43 55 45 34 46 5 45 17 44 54 44 46 44 37 44 29 44 19 44 10 44 3 43 59 44 21 44 46 45 14 44 52 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 52 23 52 28 53 4 53 28 53 2 52 36 52 6 52 8 51 42 51 43 52 38 51 59 51 51 51 41 51 38 51 40 51 24 51 12 50 53 50 19 50 2 49 38 52 0 52 0 51 38 51 4 51 12 50 40 49 5-8 49 2,1- 45 50 45 24 46 9 46 26 46 52 47 18 47 46 46 38 47 2 47 28 46 1 45 54 46 3 45 16 45 14 >50 >50 50 50 50 50 50 50 50 50 30 >50 5C 50 50 >50 30 50 50 30 50 50 30 50 50 50 30 30 50 50 50 30 50 30 50 50 50 50 50 50 50 50 50 50 50 .70 .70 .70 .50 .50 .50 .50 .20 .70 .50 .50 .70 .70 .70 .50 .50 .50 .50 .70 .70 .50 .50 .70 .70 .70 .70 .70 .70 .70 .70 .50 .50 .70 1.00 .70 .70 1.50 .70 .70 1 .00 .70 .70 1 .00 .70 .70 .30 .30 .15 .20 . 15 .20 .30 .20 1.50 .50 .50 .50 1.50 .30 .30 .30 .50 .70 1.50 1.50 1.00 1 .00 1.50 1.00 1.00 1.00 2.00 2.00 2.00 1.50 .70 .70 .50 1.50 .70 1.00 2.00 .50 1.00 1.50 1.00 2.00 1.50 1.00 .70 .50 .70 1 .00 1.00 1 .00 1.00 1.50 .20 1 .50 1.00 1.50 .70 2. CO 1.00 .70 1.00 1.00 2.00 2.00 2.00 >2.00 2.00 >2.00 >2.00 2.00 2.00 >2.00 >2.00 >2.00 >2.00 >2.00 >2.00 >2.00 >2.00 >2.00 >2.00 >2.00 >2.00 >2.CO >2.00 >2.CO >2.00 >2.00 >2.00 >2.00 1,000 1,500 1 ,500 1 ,500 2,000 1 ,500 2,000 1,500 2 ,000 2,000 2,000 1 ,500 2,000 1 ,500 1 ,500 1 ,500 1,500 2,000 1 ,500 2,000 2,000 2,000 1 ,500 2,000 1 ,500 1 ,500 1 ,500 2,000 2,000 3,000 1 ,500 2,000 2,000 2,000 3,000 2,000 3 ,000 2,000 2,000 3,000 1 ,500 1 ,000 1 ,500 1 ,500 1 ,500 N N q N N N N N N N N 3.0 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N M N N N N 300 500 500 500 700 500 150 500 70 50 700 700 73 200 70 150 300 <50 5C 70 50 <50 150 100 50 70 100 100 150 <50 50 50 <50 70 70 70 <50 N 50 500 <50 50 70 <50 <50 <2 <2 <2 <2 N s N N N N N N N N <2 K N N N N N N N N N N N N N N N N N N N N N n N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N V N N N N N N N N N N N N N N N N N N N N N N N 150 150 150 150 500 300 150 150 150 150 150 500 100 200 150 150 50 100 100 150 50 70 50 70 70 70 50 50 70 70 70 100 100 100 100 150 150 150 150 150 150 150 150 150 150 500 700 500 1,000 500 500 300 100 5,000 5,000 2,000 10,000 5,000 70C 500 700 1,000 10,000 2,000 2,000 2,000 3,000 300 500 1,000 1,000 5,000 1,500 1,500 2,000 1,500 1,500 1,000 1,000 2,000 1,000 1,500 1,000 500 700 5,000 1,000 700 700 2,000 Table 8, Semiguantitative spectrographic analyses of the hand-magnet fraction of heavy-mineral concentrates from the U.S. Virgin Islands. Continued S^m pie Cu La Ho Mb Mi Pb Sb Sc Sn Sr Zn Zr Th 8«^c:o« 1 8«SCOU2 8 '» ? C 0 U 3 BUSZQ^H BUSSOUS 9 u s r* o u 6 8 U S C 0 U 7 8USCOU8 eu^roug Busznso 8«^OS1 8 *4 S f 0 5 2 8USC053 8USC05U 8USC055 814SC056 8USC057 8UPC058 8USC059 8USC060 8UCC061 8«SC062 8USC063 8H5"Q6l4 8<4SC065 8USC066 8USC067 81SC068 84SC069 8USC070 8USC071 8USC072 BUSZOmS 814SC075S 8USC076S 8USC077S 8<4SC078S 8USC079S 8US3080S 8USC081S 8USC082S 8USC083S euscoeis 8USC085S 8«S"086 500 300 300 500 500 500 300 300 300 500 300 300 200 5^0 500 300 300 150 700 200 70 100 100 100 100 100 100 150 100 150 100 100 200 150 100 200 70 150 150 300 100 70 150 100 100 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 8 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N M <10 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N V N N N N N M NM ' N N N N N N N N N N N N N N N 300 300 700 500 500 200 150 200 200 150 150 300 70 200 150 150 150 150 100 70 50 50 50 50 50 70 150 150 150 100 100 100 150 100 150 150 150 100 150 200 200 150 200 150 150 100 200 300 150 300 150 200 500 150 150 150 150 100 150 200 150 70 70 100 70 70 50 70 70 50 70 70 100 70 150 150 100 300 100 150 300 30 150 150 200 70 30 150 300 70 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 15 20 15 15 15 15 10 N 10 10 10 15 15 15 10 10 15 15 15 20 15 15 20 20 20 20 20 20 20 15 15 15 15 15 15 15 '20 15 15 15 20 15 15 15 15 150 2,000 300 150 2,000 300 500 1,000 300 N 300 500 150 100 200 300 50 N 300 100 N N 70 N 70 30 N 100 70 200 500 50 300 200 100 300 N 300 200 300 N N 300 100 <20 N N H N N N N N N N N N N N N N N N N N N N 500 N N N 300 500 <200 N N N N N N N N M N N N N N N N 700 1,500 700 700 700 700 700 200 1,500 700 1 ,000 700 2,000 700 700 700 700 1,500 1,000 1,000 2,000 2,000 2,000 2,000 2,000 1,500 3,000 3,000 5,000 2,000 1,500 2,000 1,500 1,500 2,000 1,000 5,000 1,000 1,500 1,500 2,000 2,000 1,500 1,500 1,500 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 30 30 30 30 20 30 <20 N N N 30 50 30 50 20 <20 30 N 20 20 <20 20 30 30 30 20 <20 <20 20 20 <20 <20 <20 <20 30 <20 <20 <20 N 30 <20 20 <20 <20 N 2,000 7,000 500 1,500 1,500 <500 1,000 2,000 1,000 2,000 1,500 2,000 1,500 700 700 2,000 1,000 2,000 1,500 700 2,000 700 700 1,500 1,500 2,000 1,000 1,500 1,500 2,000 1,500 1,000 1,500 1,000 2,000 700 1,000 700 1,500 700 1,000 700 1,500 700 1,000 <20 N N N N 500 <20 N N N 50 <20 N <20 <20 N <20 <20 20 <20 N N 70 70 30 N 50 50 50 <20 50 50 50 100 70 70 30 300 70 70 20 30 50 70 50 N N N N N N N N N N N N N N N N N N N N N M N N N N N N N N N N N N N N N N N M N N N N N Table 8, Semiguantitative spectrographic analyses of the hand-magnet fraction of heavy-nineral concentrates fron the U.S. Virgin Islands. Continued f> a T p 1 e Latitude Longitude Fe Ca Ti Mn Ag Au Ba Bi Cd Co Cr 84SC067 easrcees eijsc'iegs fiUSCOQOS 8i4SC091 c 814ECOQ3S 8Ur,C09t4S euscnqss Bareges ease 09 s ei^coqq 8USC100S 8I4SC101S 814RC102S 8USC103S 8I4SC10I4S 814SC105S 8I4SC107S 8I45C108S 814SC109S 8I4SC110S 8I4SC11 IS B14SC112S 8I4SC113S 8USC11I4S 8I4SC116S 8I4SC117S 814SC118S BI4SC11QS 814SC120S 8I4SC121S 814SC122S 8I4S3123S 8I4SC12I4S BI4SC125S B14SC126S 8i4?C127S 8I4SC128S 814SC129S 8USri30S 814SC131FI 8USC132S 8i4?C133S B14SC1314S 8I4S3135S 17 1414 17 17 U3 37 17 43 23 17 142 35 17 U2 514 17 U3 35 17 <43 U1 17 143 50 17 <4<4 5 17 «45 9 17 145 15 17 <45 13 17 US 5 17 1414 52 17 1414 15 17 UU 2U 17 1414 8 17 i4<4 Ui4 17 14<4 146 17 U3 «40 17 143 22 17 U3 1U 17 U3 8 17 143 30 17 42 149 17 142 9 17 U2 35 17 142 29 17 142 59 17 U2 53 17 143 6 17 U3 16 17 U3 UO 17 43 57 17 142 55 17 43 9 17 U2 5 17 U3 17 17 U3 UP 17 42 52 17 U3 2 17 42 37 17 tt3 0 17 U3 25 17 U3 3U 6U 45 6U 45 6U 45 64 147 6U 47 6U 47 6U 46 6U 146 6tt U5 6U UU 6<4 UU 6U 143 6U 1414 614 143 6U 43 614 143 6U 143 614 14U 6U 14U 614 1414 614 1414 614 14U 614 U5 6U 14U 6tt 142 614 143 614 U3 6U 43 6U 143 6U UU 614 1»3 614 U2 6U U3 6U 142 614 146 614 146 614 147 614 148 6U 148 614 148 614 US 614 148 6t» U9 614 149 614 148 17 17 514 13 27 16 149 29 314 30 39 36 14 32 15 39 55 37 18 33 27 51 18 1 145 10 23 t»7 50 16r. - 33 514 29 143 52 27 17 8 20 3 51 140 18 26 59 50 50 20 30 30, 50 15 30 50 30 50 50 50 50 30 50 30 30 BO 50 50 50 50 30 30 30 30 50 50 50 50 50 50 50 >50 50 50 50 30 50 50 >50 50 50 >50 .70 .70 1.00 1.00 .70 1 .00 2.00 .70 .30 .70 .70 .70 .70 .70 .70 .70 .50 .70 .70 .70 .70 .70 .70 .50 .70 .70 .70 .70 1.00 .70 .70 .70 .70 .50 .50 .70 1.50 1.50 1.50 1 .00 .70 1 .50 1.00 .70 .50 .70 .70 2.00 1.00 1.00 1.50 5.00 1.50 1.00 .20 .70 .30 .70 .50 .70 1.00 1.00 1.50 1.00 1.00 .70 2.00 .70 1.00 2.00 1.50 1.00 .70 .70 .15 .70 2.00 1.00 .50 1.50 1.00 1.50 2.00 2.00 1.50 1.50 1.50 2.00 1.00 1.00 >2.00 >2.00 2.00 >2.00 >2.no >2.00 2.00 >2.00 1.50 2.00 2.00 >2.00 >2.00 >2.00 2.00 >2.00 2.00 >2.00 >2.00 2.00 2.00 >2.00 >2.00 >2.00 >2.00 >2.00 >2.00 2.00 >2.00 2.00 >2.00 >2.00 >2.00 3.00 .70 >2.00 >2.00 >2.CO >2.00 >2.00 >2.00 >2.00 2.00 2.00 2.00 1 ,500 2,000 1,500 3,000 2,000 2 ,000 2,000 2,000 1 ,500 2,000 2,000 2,000 2,000 2,000 2,000 1 ,500 1 ,500 1 ,500 2,000 2,000 2,000 2,000 2,000 3,000 2,000 2,000 2,000 2,000 3,000 5,000 2,000 1 ,500 2,000 2,000 2,000 2,000 3,000 3,000 3,000 2,000 3 ,000 2,000 2,000 2,000 3,000 N N M N N N N N N N N N N N N N N N PI N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 20 N N N N N N N <20 N N N N N N N N N <20 20 N N N N N N N 50 N N N N N N N N N N N <50 <50 50 N <50 <50 30C <50 70 <50 N <50 <50 N 100 <50 <50 50 <50 <50 N N N 50 300 500 <50 <50 N <50 <5C 300 <50 500 <50 <50 70 <50 <50 <50 50 N 100 70 70 N N N N N N N N N N N N N N N N N N N N N N N N N <2 N N N N N <2 N <2 N N N N N N N N N N N N N N N N N N N N M N N N N N «I N N N N N N N N N N N N N N N N N N N N N ff N N R N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N ff 150 150 150 150 100 150 50 100 150 100 100 100 150 150 100 100 100 70 100 150 150 100 150 100 70 100 150 150 150 100 150 70 150 100 70 150 150 150 150 100 150 150 100 100 100 5,000 1,000 300 1,500 1,000 1,500 500 700 700 1 ,500 2,000 500 2,000 1,000 1,500 1 ,500 1,500 1,500 5,000 1,000 500 7,000 500 1,500 500 1,000 2,000 1,500 1,000 1,000 2,000 300 1,000 2,000 300 500 1,000 700 1,000 1,000 1,500 1,000 500 1,500 500 Table 8. Semlquantitative spectrographic analyses of the hand-magnet fraction of heavy-mineral concentrates from the U.S. Virgin Islands. Continued Fample La Mo Mb Pb Sb Sn Sr Zn Zr Th CO CD 64S30R7 81SC088S RaSC089S 8USC090S 8UFC091S 84RC-093S PUSC09US 8USC095S 8U?C?096S 8USC098 8USC099 8USC100S 8USC101S 81SC107S 8USC103S 84SC10US 84SC105S 8aSC107S 84SC108S 84SC109S 84SC110S 84SC111S 8USC112S 8MSC113S 8USC1US 8USC116S 814SC117S 84SC118S 8USC119S 8USC120S 8USC121S 8USC122S 8USC123S 84SC12US 8USC125S 8KSC126S 8USC127S 8USC128S 8USC129S 8MSC130S 84S3131S 8 t4SC132S 8USC133S 8USC13US 8USC135S 70 150 300 100 150 100 150 100 150 15C 70 200 150 100 150 100 100 70 70 150 150 70 200 70 100 100 100 200 100 150 150 150 150 300 500 150 150 100 100 150 150 150 150 150 200 N N N N N N N N N N N N N N N N N N N N N N N N N N N K N N N N N <50 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N K N N N N N N N N N N N 70 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N K N N N N N N N N H-. N N N N N N N N N N N N N N N 150 150 150 2^0 150 200 100 1CO 200 70 100 150 100 70 150 100 100 100 150 150 100 100 150 100 70 150 150 150 100 70 100 200 150 500 300 150 100 150 150 150 100 150 100 70 150 70 100 300 50 150 200 5 15 300 150 50 300 70 50 700 50 1,500 50 70 100 300 50 200 70 200 70 300 200 70 100 100 200 200 70 1,000 300 150 150 50 150 50 150 200 70 300 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 15 15 10 15 15 15 30 20 10 10 15 10 15 15 10 15 10 15 20 15 15 15 10 15 15 15 15 10 15 15 15 15 15 20 <10 15 15 15 15 15 15 15 15 15 10 70 100 300 N 300 200 N 200 1,000 300 30 500 200 N 500 N 150 N 100 70 100 N 70 100 50 30 300 300 100 200 200 300 200 300 500 700 50 200 20 300 150 100 200 200 300 N N N N N N 500 N N N N N N N N N N N N N N N N N N N N N N N N N N N N K V N N N N N N N N 2,000 1,500 700 5,000 1,500 2,000 1,500 1,500 700 1,000 1,500 700 1 ,500 1,000 1,500 1,500 1,500 1,500 2,000 1,000 1,500 1,500 1,000 2,000 1 ,500 1,500 1,500 1 ,000 2,000 2,000 2,000 1 ,500 1,500 1,500 500 1,500 2,000 3,000 3,000 2,000 1,500 1,500 1,000 1,500 1,500 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N <?0 <20 N N N N 30 N N N K N N <20 <20 N N <20 K N N N N N 30 30 N N N N <20 30 20 50 N N 20 N 20 K 20 20 <20 N N 1,500 2,000 100 1,500 1,500 1,500 700 1,000 1,500 1,000 700 1,500 1,000 700 700 1,000 700 1,000 1,000 1,000 1,000 1,000 700 1,500 2,000 700 1,000 1,500 1,000 1,500 1,500 1,500 1,000 1,000 2,000 2,000 1,500 1,000 1,000 1,000 700 1,500 700 1,000 1,500 50 30 30 50 70 50 50 50 70 N 50 70 100 100 <20 30 50 30 50 30 70 50 20 50 70 70 100 50 30 70 50 50 50 50 N 50 100 70 50 <20 70 20 50 20 N N N N N- N V N N N N N N N N N N N N N N N N N N N N N N N N N K N N N N N N N N N N N N N Table 8. Semiquantitative spectrographic analyses of the hand-magnet fraction of heavy-mineral concentrates fron the U.S. Virgin Islands. Continued Sample Latitude Longitude Fe Mg Ti Mn ftg As Au Ba Be 3i Cd Co Cr 84SC136S 849C137S 8US"138S 8aSC139S 84SC1UOS 84FC141S 84SC142S 84SC143S 84SC148 8USC150S 84SC154 84SC156 84SC2CO 8USC2C1 PUB'202 84SC203 84SC2CU 84SC205 84SC206 8USC207 84SC208 8USC209 84SC210 84SC212 84SC213 84SC214 8USC215 84SC216 84SC218 «USC219 84SC220 8USC221 84SC222 84SC223 84SC224 8USC225 84?C226 84SC227 84SC228S 84SC229 84SC239S 84SC231 84SC232S 84SC233 84SC234 17 U2 27 17 U1 33 17 U1 UC 17 141 55 17 U1 47 17 U1 21 17 U2 16 17 42 UU 17 U5 38 17 U5 34 17 47 26 17 U7 12 17 U5 20 17 45 31 17 U5 36 17 45 3U 17 U5 3R 17 45 18 17 U5 13 17 UU 48 17 U5 12 17 U5 0 17 45 1 17 UU 36 17 UU 17 17 UU fi 17 U4 1 17 45 U1 17 45 1 17 45 24 17 45 5 17 44 56 17 4U 57 17 44 57 17 45 14 17 44 33 17 44 13 17 44 20 17 44 6 17 44 10 17 43 39 17 44 12 17 44 26 17 44 50 17 44 48 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 614 64 64 64 64 64 64 64 64 64 6>4 64 64 64 64 64 64 64 64 64 64 64 49 16 48 52 48 23 49 7 4Q 31 49 25 49 43 49 53 48 50 48 13 37 32 37 10 34 6 34 22 34 31 34 39 34 48 35 1 35 33 36 25 34 20 34 35 34 53 36 37 37 7 37 24 37 38 39 12 38 17 37 38 37 40 37 33 37 15 36 46 36 23 38 59 38 39 36 56 36 39 38 0 38 43 39 3 39 33 38 53 38 51 >50 >50 >50 50 50 >50 50 50 20 50 50 50 50 50 50 50 50 50 50 50 50 50 50 30 50 50 50 50 50 30 50 50 50 50 50 50 50 50 30 30 50 50 50 30 50 .70 .70 .70 .70 .70 .70 .70 .70 2.00 .70 .70 1.00 1.00 1.00 1.00 .70 .70 1.50 1 .50 1.00 1.50 1.00 1.00 1.00 .70 .70 .70 .70 1.00 .70 1 .00 .70 .70 .70 .70 .70 .70 1 .00 1 .00 .70 .70 .70 .70 1.00 .70 1.50 .70 .70 .70 1.00 .30 1 .50 1.00 3.00 .50 .50 .30 .30 .70 .70 .30 .30 1.50 2.00 .70 1.00 1.00 .30 .70 .20 .20 .70 .30 .50 .15 .20 .15 .15 .20 .15 .20 .30 .50 3.00 .20 .10 .20 .50 .50 .50 >2.00 2.00 1.50 >2.00 >2.00 2 .00 2.00 2.00 >2.00 2.00 1.50 2.00 2.00 2.00 2.00 1 .00 1.50 2.00 >2.00 1.50 >2.00 2.00 2.00 1.00 1 .00 .70 1.00 1.00 1.00 .70 1 .00 1.00 1.00 1.00 1.50 1.50 2.00 1.50 >2.00 1.50 1 .50 .70 1.50 1.00 1 .50 3,000 1,000 2,000 2,000 2,000 2,000 2,000 2,000 3 ,000 2,000 1 ,500 2,000 2,000 2,000 1,500 1 ,500 1 ,500 2,000 1 ,500 2,000 3,000 2,000 2,000 2,000 2,000 2,000 1,000 2,000 2,000 3,000 2,000 2,000 2,000 2,000 2,000 2,000 2,000 2,000 700 2,000 1 ,500 1,500 2,000 2,000 2,000 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 30 N N N N 20 N <20 20 N 30 20 N N N N N N N 20 20 20 20 20 20 20 20 20 20 20 <20 20 50 N N <20 N N <20 N 50 150 200 <50 150 70 200 300 150 <53 300 300 100 300 100 500 300 500 100 700 200 200 300 500 700 500 300 700 500 700 500 300 500 500 500 500 500 500 150 500 300 300 500 700 500 N N N N N N N N N N N <2 N N N 5 N N N N N N <2 N <2 <2 N <2 <2 <2 <2 <2 <2 <2 <2 N N <2 N <2 <2 2 N <2 <2 N N N N N N N N N 20 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N K 70 N N N N N N N N N N N N N N N N N N N N N N N N » N N N N N N N N N N N N N N N N N N N N N N N 150 150 100 100 100 150 100 150 70 150 70 100 150 150 100 150 70 70 70 70 150 100 100 100 150 100 150 100 150 70 150 100 150 150 100 100 150 150 50 100 150 150 300 150 150 200 150 500 1,000 700 500 1,000 300 700 1,000 300 7,000 5,000 m,ooo 10, COO 500 7,000 5,000 7,000 5,000 10,000 10,000 700 7,000 1,000 1,000 1,500 300 500 300 500 2,000 700 1,500 2,000 200 300 1,000 500 1,000 200 1,500 >10,000 200 500 Table 8, Semiquantitative spectrographic analyses of the hand-magnet fraction of heavy-mineral concentrates from the U.S. Virgin Islands. Continued Sample Cu La Ho Nb Pb Sb Sn Sr Zn Zr Th CO pttsc: 136S 8^ C C 1 37S B^r.C 1 38S 8is~i39s 8USC1UOS 8USC1U1S 8USC1U2S 8USC 1U3S 8USC1U8 84SC150S 8USC15U 84SC156 8 t*SC200 8USC201 80SC202 8USC203 8USC20U 8USC2C5 8USC206 8USC207 8USC208 8USC209 8USC210 8USC212 8USC213 8USC21U 8USC215 8USC216 8USC218 8USC219 8USC220 8USC221 8USC222 8USC223 8US322U 81SC225 8USC226 8USC227 84SC228S 8USC229 845^2305 8USC231 8USC232S 8USC233 8USC23U 1^0 150 500 200 200 300 150 150 150 1,000 200 200 300 300 200 500 300 200 150 300 300 300 300 50 300 700 500 300 500 200 500 500 300 300 200 300 500 700 150 700 700 1,000 1,000 700 5&0 N N N N V N V N N N N N N N N N N N N N N N N V N N H M N N N N N N N N N N N N N N N N N N N 15 N N N N N N <1C N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N V N N N N N N ft N ' N *N- N N N N N M N N N N N N N N N 150 150 200 150 100 200 100 150 70 150 200 150 150 300 300 300 200 300 150 300 300 300 200 300 300 300 150 500 200 300 300 300 300 300 300 150 200 200 30 200 300 300 700 300 200 150 300 300 1,000 200 500 70 200 N 50 100 70 300 70 50 100 150 70 50 70 70 70 70 150 100 150 70 100 100 70 100 100 100 100 100 100 100 100 30 100 70 150 70 100 100 N N N N N N N N N H N N N N N N N N M N N N N N N N N N N N N N N N N N N N N N N N N N N 15 <10 < 10 10 15 15 15 15 20 15 10 15 15 20 20 15 15 15 15 15 20 15 15 15 20 10 10 10 15 15 15 10 15 15 15 10 15 15 15 10 10 <10 <10 10 <10 500 700 500 200 150 500 100 1,500 N 70 300 N N N N 150 200 70 N N N N N 100 N 70 N 70 200 N N 70 1,500 50 N 20 200 50 N 100 N N N N 300 N N K N N N N N N N N N N V V N N <200 N M N N N N N N N N N N N N N N N N N N <200 >f N H N N N 1,000 500 500 1,000 700 700 1 ,000 1,000 3,000 2,000 700 1,000 1,500 1,500 2,000 500 1,000 1,500 2,000 1,000 2,000 1,500 1,000 1,000 700 700 1,000 1,000 1,000 500 700 700 700 700 700 1,000 1,000 1,000 2,000 700 1,000 1,500 700 500 500 N N N N N N N N N N N N N N N N N N N N N N N N M N N N N N N N N N N N N N N N N N N N N N N N N <20 <20 20 2C 20 <20 20 20 20 30 20 50 30 20 N 30 30 30 30 20 50 30 30 30 30 30 30 50 30 30 30 <20 20 30 <20 30 30 50 30 <20 <20 1,000 <500 10,000 700 1,500 1,500 700 1,500 500 500 700 700 1,000 1,500 1,500 500 1,500 1,000 1,000 1,000 1,500 1,500 700 1,500 700 700 700 700 700 1,000 1,000 1,000 1,000 1,000 1,500 700 1,500 1,000 500 1,500 1,000 1,000 1,500 700 1,500 20 <20 N 70 70 20 50 20 2G 20 100 30 N 30 20 50 30 20 20 50 30 20 30 <20 50 <20 20 30 30 50 30 30 50 50 30 30 20 30 20 20 50 30 70 30 <20 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N V N N N N N N N N Table 8, Semiquantitative spectrographic analyses of the hand-magnet fraction of heavy-minecal concentrates from the U.S. Virgin Islands. Continued Sample Latitude Longitude Fe Ca Ti Hn Ag As Au Ba Be Bi Cd Co Cr 84ST235 8USZ236 84SC239 84SC240 84SC240 84SC240S 84SC240S 84SC241 84SC242 84SC243 84SC244 84SC245 84SC246 84SC247 8 4 S C 2 U 8 84SC249 84SC250 8USC251 84SC251S 84SC252 8US325^ 84SC254 8HF;c:25b 84SC256 8UTC258 8«?"25oc 84SC260S 84SC261S 84SC262S 84SC263 84S;:264S 84SC264S 8"SC267S 8USC268S 8USC269S 84SC270S 84SC271S 84S*272S 84SC274S 8't?C275 8USC275S 84SC276S 84SC277S 84SC278S 84?~279S 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 45 3 45 6 43 59 44 5 44 5 44 5 44 5 43 10 43 13 "3 22 43 8 43 46 44 37 44 30 44 34 45 31 44 47 44 26 44 26 44 28 44 43 44 27 44 17 43 54 43 30 42 38 46 58 46 24 46 34 46 9 46 16 46 13 41 19 41 29 41 30 41 33 41 38 42 6 U1 33 42 8 42 8 42 0 41 52 42 13 42 30 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 39 40 41 41 41 41 41 41 40 41 41 40 40 40 40 40 41 41 41 41 42 42 42 42 U2 42 45 45 45 44 44 44 52 52 51 50 51 50 50 51 51 52 52 51 51 3 4 30 17 19 17 19 27 42 42 14 10 29 53 47 19 22 39 39 47 2 4 37 19 13 14 0 1 4 59- 25 22 49 14 47 53 22 37 25 5 5 20 43 46 9 50 50 50 50 50 30 30 50 50 50 30 >50 15 >50 50 50 7 50 30 50 50 50 30 30 >50 30 30 50 1 50 50 50 50 50 50 20 50 30 30 50 30 50 50 50 50 1 .00 1 .00 .70 .70 .70 .50 .50 1 .50 1.00 1.00 1 .00 .70 1.00 .70 .70 1 .50 .70 .70 .70 .70 .70 .70 .70 .70 .70 .70 1.00 .50 .70 .70 .70 .70 .70 1.00 .70 .50 .70 .70 1.00 .70 1.00 1 .00 .70 .70 .70 .70 1.50 2.00 2.00 2.00 3.00 3.00 3.00 .30 1.00 2.00 .30 1.50 .70 .20 .70 7.00 .70 1.00 1.50 1 .00 2.00 3.00 3.00 .70 .50 1.00 .30 .30 1.00 1.00 1.00 .15 .30 .20 .30 .50 1.50 1.50 1.00 1.00 .70 .30 .70 1.50 .70 2.00 2.00 >2.00 >2.00 3.00 3.00 >2.00 2.00 >2.00 >2.00 1 .50 1.50 1 .00 .70 .50 .50 1 .50 >2.00 >2.00 2.00 >2.00 >2.00 >2.00 2.00 >2.00 2.00 2.00 2.00 2.00 >2.00 >2.00 >2.00 >2.00 >2.00 .70 2.00 1.50 >2.00 2.00 >2.00 >2.00 2.00 >2.00 >2.00 2,000 2,000 1 ,500 2,000 2,000 1 ,500 1 ,500 2,000 1,500 2,000 2,000 1 ,500 2,000 2,000 1 ,500 2,000 1,500 2,000 2,000 2,000 1 ,500 2,000 1 ,000 1,500 2,000 2,000 2,000 2,000 1 ,500 1 ,500 2,000 2,000 3,000 3,000 3,000 1 ,000 2,000 1 ,500 2,000 2,000 2,000 2,000 2,000 2,000 1,500 N N N N V N N V N N N N N N N N V N N N V N N V N N N N N N N N N «f N N V N N N N N N N N N N N N N N N N N N N N N V N N N N N N N N N N N N N N N N N N N N N N K N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N H 20 30 30 <20 <20 N N N N 20 N N N N 50 N N <20 20 30 30 30 N 30 50 N N N N N N K N <20 <20 N 20 N N N K N N 500 70 300 300 300 300 300 150 300 300 300 500 <50 300 700 500 700 300 500 300 500 500 500 500 500 500 300 <50 70 70 50 50 <5C <50 300 300 300 300 300 500 500 <50 50 <50 500 N N N N N N N V <2 N N <2 N <2 2 N <2 N N N N N N N N N N N N N N N N N N <2 N N N N N N N N N N V N N N N .N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N K N N N N N N N N N N N N N N N V N N N N N V N N N N N 150 100 50 100 100 70 70 50 150 70 50 150 N 150 150 150 20 70 70 100 70 100 30 30 150 20 15 100 20 30 100 100 150 100 100 20 100 70 50 100 70 150 150 150 100 500 2,000 300 1,500 1,500 300 300 1,500 1,500 >10,000 2,000 1,500 150 1,000 300 7,000 N 200 300 1,000 300 300 300 300 10,000 500 300 500 300 700 1,000 1,000 700 700 1,000 200 1 ,000 300 500 10,000 1,000 1,500 700 700 1,000 Table 8, Semiquantitative spectrographic analyses of the hand-magnet fraction of heavy-mineral concentrates from the U.S. Virgin Islands.--Continued Cu La Mo Nb Ni Pb Sb Sc Sn Sr Zn Zr Th CJD 84FC235 8USC236 84SC239 84FC240 8USC24D 8US:240S 8USC2UOS 8USC241 84SC2U2 8UFC2U3 8USC2UU 8USC245 8USC2U6 8USC2U7 8USC2U8 8USC2U9 845:25") 84SC251 8USC251S 84SC252 8USC253 84?r254 8USC255 8USC256 8USC258 8USC259S 8USC260S 84SC261S 84SC262S 8USC263 8USr26US 8USC264S 8USC267S 8UFC268S 8US:269S 8U9CT270S 84£"C271S 8USG272S 8USC274S 8USC275 84SC275S 8USC276S 8USC277S 8USC278S 845C279S 700 300 200 500 500 500 500 150 500 200 150 500 100 700 500 300 100 300 150 300 300 70 100 100 300 70 70 100 70 150 150 150 200 200 150 100 150 100 100 150 100 300 150 100 150 N N N N H N N N N V N N N H N N <50 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 10 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N V N N N V N N N N N N N N N N N N N N H» - N N N N N N N N N N N N N N N 300 200 150 300 300 100 100 200 500 200 150 500 50 300 500 500 10 150 50 70 1PO 70 50 50 200 70 20 50 15 50 70 70 100 100 100 30 1CO 100 70 150 70 150 150 100 150 100 100 200 150 150 <20 <20 30 150 50 50 150 <20 70 150 100 30 200 50 50 300 100 30 70 150 50 30 70 20 70 30 30 70 50 100 70 100 700 70 100 100 1,000 70 100 70 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N V N N V N N 10 10 10 15 15 20 20 15 15 15 15 15 N 10 10 10 20 10 15 15 10 15 15 15 15 15 20 10 15 10 15 15 15 15 10 <10 10 10 15 15 15 15 10 15 15 70 300 500 200 200 N N N 30 200 N 150 N 300 500 150 N 150 N 70 300 150 20 150 500 N N 30 N N N N 100 30 70 N 300 500 N 300 200 500 200 300 200 N N N N N N N N N N 200 N N N N N 2,000 N N N N N N N N N N N N N S N N N N N N <200 <200 N <200 N N N <200 500 2,000 1,000 1,500 1,500 2,000 2,000 2,000 1 ,500 1,500 2,000 1,000 1,500 1,000 700 700 500 700 2,000 2,000 1,000 2,000 2,000 1,500 2,000 1,500 1,500 2,000 1,500 1,500 2,000 2,000 1,500 1,500 1,500 1,500 2,000 1,000 1,500 1,500 2,000 2,000 1,000 1,500 1,500 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N K N N N N N N N N <20 <20 N 30 30 <20 <20 30 50 30 30 30 N 30 20 N 20 N <20 20 <20 20 20 30 50 20 30 <20 <20 <20 20 20 N <20 30 20 <20 20 30 50 20 N N <20 30 500 1,000 2,000 1,500 1,500 <500 <500 700 1,000 1,000 1,000 5,000 N 700 1,500 1,500 N 1,000 1,000 700 3,000 1,500 700 <500 1,500 700 700 700 700 2,000 700 700 2,000 1,000 1,000 N 1,500 <500 700 1,500 700 1,500 2,000 1,000 700 20 <20 50 50 50 50 50 70 50 50 50 50 N 50 20 50 100 20 70 50 50 70 70 100 50 100 70 70 50 20 <20 <20 30 100 50 50 20 20 70 70 50 70 20 100 <20 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N H N N N N N N N N N N N N N 8. Semiquantitative spectrographic analyses of the hand-magnet fraction of heavy-mineral concentrates froai the U.S. Virgin Islands.--Continued Sample Latitude Longitude Fe Ca Ti Mn Ag Au Ba Be Bi Cd Co Cr CD cn 84SC280S 845C281S 84SC282S 84SC283S 84?~2P4S 8USC285S 84 C,C286S P4SC2P7S 84SC268S 8(4?^289S 84SC290S 84SC291S 84<^C293S 84SC294S 8U5C2QbS 84SC297S 84SC298S 84SC299 84SC300 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 42 41 41 42 42 45 44 43 U3 43 43 43 44 44 44 44 44 45 45 35 34 53 30 38 23 24 12 26 38 41 49 26 39 32 8 10 45 42 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 50 49 49 49 50 41 40 41 41 41 41 41 41 41 41 41 41 51 50 40 27 47 47 13 35 13 40 44 42 36 30 31 46 47 40 52 2 41 50 50 50 50 30 50 50 50 50 50 30 50 50 50 30 50 30 >50 30 .70 1 .00 .70 .70 1.00 .50 .70 .30 .70 .70 .70 .70 .30 .70 .50 .70 .70 .50 1.50 1.50 .30 1.50 1.00 2.00 <.10 .20 .10 .15 .20 .50 .50 .20 1.00 2.00 .20 .20 .50 3.00 2.00 2.00 2.00 2.00 >2.00 .30 1.00 .70 1 .50 .70 2.00 2.00 .30 >2.00 >2.00 1.50 1 .00 .70 2.00 2,000 2,000 1,500 2,000 2,000 1 ,000 1,500 1 ,000 1 ,500 2,000 2,000 2,000 2,000 2,000 1,500 2,000 2,000 1,500 2,000 N V N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N <20 <20 20 <20 N N N N N N 300 50 200 300 200 300 200 200 200 500 300 700 300 700 200 300 700 50 70 N N N N N <2 <2 N N <2 N <2 N 2 2 <2 2 N N N N N N H N N N N N N N N V N N N N N N N N N N N N N N N N N N N N N N N N 100 150 100 100 70 150 70 50 50 100 150 150 50 150 30 70 70 200 150 1,000 500 700 1,500 1,000 1,500 300 300 >10,000 300 300 300 100 700 500 300 100 1,000 500 Table 8 Semiquantitative spectrographic analyses of the hand-magnet fraction of heavy-mineral concentrates from the U.S. Virgin Islands. Continued Sample Cu La Ho Nb Ni Pb Sb Sc Sn Sr Zn Zr Th CD 8USC2BOS 8USC281S 8USC282S 8USC283S 8<4SC28US 8<4?C285S 8USC286S 8"S"287S 8USC288S 8<4SC289S 8USC290S 8USC291S 8USC293S 8USC29US 8USC295S 8USC297S 8USC298S 8USC299 8USC300 150 150 100 100 100 2,000 500 150 100 200 300 500 300 200 200 700 300 700 150 N N N N N N N N N N N V N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 150 100 150 150 100 500 300 150 100 150 200 300 70 50 30 150 300 150 20 100 200 150 150 100 200 100 100 70 100 70 100 200 50 30 100 100 70 <20 N N N N N N N N N N N N N N N N N N N 15 15 15 15 15 10 10 N <10 10 10 15 <10 15 15 10 10 10 15 150 200 50 500 50 N N 300 N N N N 500 N N N 70 N N N N N N <200 N N N N * N N H N N N N N 200 1,500 1,500 1,000 1,500 2,000 1,000 1,500 300 700 700 700 1,000 200 1,500 1,500 1,000 700 500 1 ,500 N N N N N N N N N N N N V N N N N N N 20 N <20 30 20 <20 N N N N 30 30 N 20 30 20 30 <2C N 1,500 700 1,500 2,000 1,500 3,000 1,000 3,000 2,000 7,000 700 700 15,000 700 700 700 700 700 N <20 N 30 50 50 20 20 <20 30 <20 50 20 N 100 70 50 50 30 20 N N N N N N N N N V N N N N N N N N N TaMe 9. Semiquantitative Spectrographic Analyses of oxalic-acid leachates derived from the bromoform-1ight fraction from the U. S. Virgin Islands, not detected; <, detected but below the limit of determination shown; >, determined to be greater than the value shown.] CD Sample 83ST001 83ST002 83ST003 83ST004S 83ST005S P3ST006S 85ST007S 83STC38S 83ST009S 83ST010S 83ST011S 83ST012S 83ST013S 83SI014S 83ST015S 83ST016S 83ST318S 83SIG21S 83ST022S 83ST023S 83ST024S 83ST025S 83ST026 83ST027S 83ST029S 83ST030S 83ST331S 83ST032 83ST033 83ST034 83ST035 83ST036 83ST037 83ST038 83ST039 83ST040 83ST041 83ST042 83ST043 83ST044S 83ST04bS 83^1046 83STOU7 83ST048 83ST049S Latitude 18 20 46 18 20 48 18 20 23 18 19 15 18 19 36 18 19 2 18 18 41 18 17 5? 18 18 0 1818 6 18 18 10 18 18 54 18 18 33 18 18 26 18 18 24 18 19 47 18 19 19 18 18 27 18 21 15 18 20 47 18 20 21 18 21 17 18 21 22 18 21 5? 18 24 7 18 24 35 18 22 1 18 22 37 18 22 1 18 21 34 18 21 49 18 22 28 18 22 12 18 23 0 18 23 14 18 23 41 18 24 5 18 22 24 18 22 21 18 22 24 18 20 4 18 19 42 18 16 44 18 18 39 18 18 58 Longtude Fe-pct. 64 53 14 64 52 44 64 51 58 64 50 24 64 50 13 64 49 40 64 49 41 64 49 2 64 49 25 64 49 34 64 49 44 64 50 50 64 51 52 64 52 14 64 52 28 64 56 42 64 57 7 6506 64 59 39 64 58 36 64 50 42 64 52 54 64 53 21 64 53 35 64 54 45 64 54 29 64 54 24 64 55 41' 64 55 15r " 64 55 39 64 56 14 64 56 57 64 58 5 64 58 8 64 58 21 64 58 8 64 58 30 64 58 32 64 59 0 64 59 27 64 56 15 64 56 7 64 53 46 64 53 4 64 53 28 s 20.0 20.0 15.0 15.0 20.0 20.0 20.0 30.0 20.0 20.0 20.0 15.0 30.0 20.0 20.0 20.0 20.0 20.0 15.0 20.0 15.0 30.0 20.0 20.0 30.0 30.0 20.0 20.0 20.0 30.0 20.0 20.0 30.0 15.0 20.0 20.0 15.0 15.0 20.0 15.0 20.0 20.0 15.0 15.0 20.0 Mg-pct . E 5.0 7.0 7.0 7.0 5.0 7.0 5.0 2.0 5.0 3.0 5.0 .7 3.0 2.0 5.0 5.0 5.0 5.0 5.0 7.0 3.0 5.0 5.0 7.0 7.0 5.0 7.0 5.0 7.0 7.0 7.0 7.0 5.0 10.0 7.0 7.0 7.0 7.0 7.0 3.0 2.0 7.0 5.0 7.0 5.0 Ca-pct . s 1.5 2.0 1.5 1.5 1.5 1.0 .7 .7 .5 1.5 .3 3.0 .2 1.0 .7 3.0 .7 .5 2.0 1.5 7.0 .3 1.5 1.5 1.0 .7 2.0 .7 1.5 2.0 1.5 1.5 2.0 1.0 1.5 2.0 2.0 2.0 3.0 3.0 fC> 1.5 1.0 .3 1.0 Ti-pct. s .100 .100 .100 .070 .200 .200 .070 .050 .015 .020 .010 .050 .050 .030 .070 .070 .070 .050 .150 .150 .300 .300 .150 .300 .200 . 100 .150 .070 .200 .150 .100 .700 .150 .070 .070 .100 .100 .070 .150 .150 .100 .100 .300 .030 .050 Mn-ppm s 5,000 7,000 7,000 7,000 10,000 10,000 10,000 1,500 10,000 3,000 7,000 10,000 5,000 10,000 10,000 10,000 10,000 5,000 10,000 5,000 3,000 10,000 7,000 10,000 10,000 10,000 10,000 10,000 7,000 7,000 10,000 7,000 10,000 7,000 5,000 10,000 7,000 10,000 10,000 10,000 10,000 10,000 3,000 10,000 10,000 Ag-ppm As-ppm Au-ppm s 500.0 10.0 20.0 50.0 300.0 70.0 200.0 50.0 N 5.0 10.0 N 3.0 N N 7 .0 W N N 200.0 703.0 N <1 .0 7.0 N N 70.0 200.0 2.0 30.0 N N 300.0 N 2.0 N N 7.0 N N 15.0 N 10.0 20.0 20.0 s N N N N N N N N N N W N N N N N K N N " N N Nl N N N N N N N N N N N N N N N N N N N N N N s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N W N N N N N » N N N N N N N N N R-ppffi s 300 100 70 73 500 500 50 1 ,000 100 200 20 700 203 1 ,500 33 500 30 703 150 200 700 150 <20 70 N N 20 70 50 500 70 150 N 3D 33 150 <2D N 70 200 300 50 100 70 200 Pa-ppm Re-ppa> s 300 700 300 200 1,000 200 503 <50 150 70 150 700 1,000 1 ,000 1,000 700 1 ,000 73 300 700 200 700 500 700 700 500 1 ,500 700 300 1 ,000 1,500 200 700 200 300 300 150 500 1 ,000 1,000 2,000 703 5? 5&0 150 s <2 <2 N N N N N <2 <2 <2 <2 <2 2 N N N 2 <2 N N h <2 <2 N <2 <2 <2 <2 <2 N <2 N N N <2 3 N N N N 2 <2 N N 2 Table 9. Semiquantitative Spectrographic Analyses of oxalic-arid leachates derived from the bromoform-light fraction from the U. S. Virgin Islands.--Continued CD CO Sample 83SI001 83STOO? 83SI003 83ST10US 83ST005S 83SI006S 83ST007S 83SIC08S 83FTOOOS R3ST01GS 83ST011S 83<T012S 83SI013S 83rroi«S 83ST015S 83?T016S 83ST018S 83ST021S 83ST022S 83ST023S 83ST02US 83ST325S 83ST026 83ST027S 83ST029S 83SI030S 83SI031S 83SI032 83ST033 83ST03U 83ST035 83SI036 83ST037 83STD38 83ST039 83STOUO 83STOU1 83STOU2 83SrOU3 83STOUUS fl3SrO«5S 83STOU6 83STOU7 83STO«8 839TOU9S Bi-ppm s N N N N N N N N N N N N N N N N N <20 N N 20 N N N N N N N N N N N N N N N N N N N N N N 50 N Cd-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Co-ppm s 150 150 150 150 1,000 500 500 30 100 30 150 150 150 1,500 1,500 300 100 20 150 100 70 150 150 300 300 300 150 200 =100 150 150 150 150 100 100 100 100 70 150 500 500 200 100 200 70 Cr-ppm s 100 150 100 100 150 700 100 70 100 50 150 30 70 700 150 70 70 100 70 70 100 150 150 150 150 150 70 100 100 70 50 100 20 70 100 N 50 20 70 20 20 300 200 SCO 200 Cu-ppm s 500 1,000 500 700 1,000 700 300 200 50 70 100 300 15,000 700 1,000 300 150 1,000 500 700 1,000 1,000 700 1,000 700 700 1,000 700 700 700 1,000 1,000 700 500 500 1,500 1,000 500 1,000 1,000 100 300 1 ,000 2,000 200 La-ppm s N N N N N N N N N N N N <50 N N N 70 N N N N N N 70 <50 N N 50 N N N N N N N N N N N N <50 N N N N Mo-ppm s <10 N N N 10 N N 100 10 15 20 N 100 70 10 N N 10 N N N N N N N N N N N N N N N N N N N N N N <10 N N N N Nb-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Ni-ppm s 50 150 100 100 200 200 70 30 50 20 100 50 150 700 200 100 100 50 70 70 100 100 150 200 150 70 70 70 100 70 50 150 50 100 150 50 70 10 100 70 50 300 150 300 50 Pb-ppm s 200 70 70 300 300 70 100 500 100 150 70 50 200 150 100 100 500 3,000 100 70 500 100 700 100 70 100 100 150 70 150 150 30 100 <20 50 30 50 20 150 70 700 100 70 150 200 Sb-ppm s N N N N N N N N N N h N N N N N N N 300 N N N N N N N N N N N N N N N N N N N N N N N N N N Sc-ppm s 20 <10 <10 10 15 50 20 <10 <10 10 15 <10 15 50 20 20 10 15 20 10 20 70 20 15 15 10 15 20 15 <10 30 30 30 10 15 10 15 20 50 70 30 20 20 20 15 Sn-ppm s N N N N 50 N 70 150 N 30 N N 200 N N N 70 70 N N 100 20 200 N N N N N N N N N N N N N N N N N N N 200 N N Sr-ppm s 300 700 <200 <200 <200 N <200 N N 700 N 300 N <200 N 500 200 <?DO <200 <200 1,000 N 300 300 N N 700 N 300 3,000 500 N N 200 N N N 1,000 500 <200 <200 <200 N N 500 Table 9. Semiquantitative Spect rographic Analyses of oxalic-acid leachates derived from the bromoform-light fraction from the U. S. Virgin Islands .--Continued CD Sanple 83ST001 83SIOO? 83ST003 83STOOHS 83ST005S 83ST006S 83ST007S 83STHD8S 83Sr009S 83ST010S 83ST011S 83SI012S 83?T013S 83STG1I4S 83ST315S 83ST016S 83STC18S 83SI021S 83SP022S 83ST023S 83ST02US 83ST025S 83ST026 83SI027S 83SP029S 83SP030S 83SI031S 63SI032 R3SI033 83ST03U 83SI035 83ST036 83ST037 83SI038 83ST039 83STOUO 83STOH 1 83SIOH2 83SIOU3 83STOHHS 83STOI45S 83SIOI46 83STOH7 83STOU8 83STDU9S V-ppm s 700 700 500 700 1,500 1,500 1,000 200 200 200 500 500 700 1 ,500 1,COO 2,000 700 500 1,000 100 500 1,500 700 1,500 1,500 1,500 1,000 700 700 1,000 1,000 1,000 1,500 700 1,500 700 1,000 500 1,000 1,500 ^00 1,000 700 700 =.00 H-ppm S N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Y-ppm s 50 N <20 20 <20 20 50 N N N 20 N 30 <20 20 70 150 30 <20 N <20 50 20 50 30 20 50 70N ' N r 70 30 50 N 50 N 20 N 50 70 30 70 30 20 50 Zn-ppm s 1 ,000 500 N N N N <500 N N 500 700 N 20,000 N N N 500 1,500 N K 1,000 <500 700 N 500 N 500 N 500 700 <500 N 500 N 500 N K 700 500 N 500 500 N 700 1,000 Zr-ppm s 50 <20 <20 <20 20 30 30 N N N N N N N <2C 50 20 N 30 30 30 20 <20 70 50 30 50 20 20 20 50 30 70 N 50 50 50 <20 70 100 30 30 N N N Th-pp« s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Table 9. Semiquantitative Spectrographic Analyses of oxalic-acid leachates derived from the broinoform-light fraction from the U. S. Virgin Islands.--Continued tooo Sample 83SI050 83ST051 83ST052 83ST05U P.S^TOSS 83sr:>5f: 83SI057 839T058 83ST059S 63STG60S 83F;r061 63SI062 8351063 83SI065 83ST067 83SI068 83ST069 83ST070 83SI071 83ST072 83ST073 83STC7H 83ST075 83ST076 83FT077 83ST078 83ST079 83ST080 83SI081 83ST082 83ST083 83ST085 83SP086 83ST087 83ST088 83ST089 83ST090 83ST091 83ST092 83SI093 83STH914 R3SP095S 83ST096 83ST097 83Rr098 Latitude 18 19 38 18 19 37 18 19 1*8 18 19 55 18 21 0 18 20 5U 18 21 16 18 20 1*0 18 20 23 18 21 U2 18 21 H3 18 22 52 18 21* 20 18 21 U6 18 19 <*1 18 19 59 18 19 36 18 19 UO 18 19 U2 18 19 19 18 19 27 18 20 5 18 19 UU 18 19 31* 18 19 12 18 19 11 18 19 30 18 20 13 18 20 18 18 20 12 18 20 15 18 21 32 18 21 17 18 21 1*3 18 22 11 18 22 9 18 21 52 18 21 39 18 21 32 18 21 I* 18 20 M5 18 21 15 18 21 28 18 20 Ui* 18 20 49 Lonqtude 6H 55 18 6H 56 58 61* 57 31 61* 5R 21 61* 59 10 65 1 5U 65 2 6 65 U 1*7 65 5 6 65 2 U9 6539 65 3 UO 65 3 36 614 59 37 61* 51 11* 6«4 51 1H 61* 51 UO 61* 52 23 61* 52 25 61* 53 29 6U 53 28 61* 53 3 64 53 0 61* 5U 35 6U 5i* 1*2 61* 53 59 61* 51* 16 61* 51* 30 61* 5«4 2M 61* 51* 12' 61* 53 30 61* 5U 30 61* 55 16 61* 56 31 61* 57 8 61* 57 38 61* 58 35 65 0 55 65 1 5 65 1 22 65 1 22 65 0 10 65 1 55 64 56 55 64 57 8 Fe-pct . s 15.0 20.0 15.0 30.0 15.0 15.0 20.0 15.0 20.0 20.0 15.0 20.0 15.0 20.0 20.0 20.0 20.0 15.0 15.0 15.0 20.0 15.0 20.0 20.0 20.0 20.0 20.0 20.0 15.0 15.0 15.0 15.0 20.0 20.0 15.0 15.0 20.0 20.0 20.0 15.0 15.0 15.0 15.0 20.0 15.0 Hg-pct. s 7.0 5.0 5.0 1.5 7.0 3.0 5.0 5.0 2.0 3.0 5.0 5.0 1.5 5.0 5.0 3.0 3.0 3.0 3.0 7.0 5.0 7.0 3.0 7.0 7.0 7.0 5.0 5.0 5.0 5.0 5.0 5.0 2.0 3.0 5.0 5.0 5.0 7.0 5.0 3.0 5.0 5.0 5.0 7.0 7.0 Ca-pct . s 2.0 .7 .5 1.5 2.0 5.0 5.0 1.5 2.0 2.0 1.5 1.5 1.5 3.0 .5 .3 .5 .3 .5 .5 .7 1.5 .5 1.0 1.5 1.5 1.0 1.5 1.5 1.0 1.0 2.0 1.0 3.0 1.5 2.0 1.5 5.0 3.0 5.0 3.0 2.0 3.0 3.0 2.0 Ti-pct. s .070 .050 .070 .070 .150 .100 .200 .150 .030 .150 .070 .200 .I^O .500 .070 .070 .070 .070 .070 .070 .150 .100 .070 .070 .070 .070 .070 .150 .070 .150 .070 .100 .200 .100 .150 .070 .070 .070 .200 .100 . 100 .050 .150 . 100 .070 Hn-ppm s 5,000 10,000 3,000 300 5,000 7,000 10,000 7,000 10,000 10,000 10,000 10,000 2,000 10,000 10,000 10,000 10,000 7,000 5,000 7,000 10,000 5,000 7,000 10,000 10,000 7,000 10,000 3,000 10,000 10,000 3,000 7,000 5,000 10,000 7,000 10,000 10,000 10,000 10,000 1,000 10,000 10,000 10,000 10,000 1,000 Ag-ppm As-ppm Au-ppm s N 10.0 20.0 700.0 20.0 15.0 15.0 N N N 5.0 N N N 5.0 N N N N 7.0 7.0 7.0 N 7.0 N N 7.0 5.0 N <1 .0 2.0 N 3.0 <1 .0 N N N 3.0 N N 7.0 N N 20.0 N S N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 5 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N S N B-ppm s 50 100 50 500 100 50 50 20 N 200 50 150 5D 70 50 2PO 70 200 100 150 300 30 70 70 30 N 20 200 50 100 N N 500 N 150 N 3D 30 150 70 100 20 50 100 N Ba-ppm s 200 300 100 700 200 300 1,OHO 500 1,000 1 ,500 1,500 1,000 200 300 500 500 700 300 500 150 500 500 200 300 300 500 2,000 500 1,500 500 300 1,000 700 1,500 1,000 1,500 2,000 700 700 500 700 500 1,000 700 7^0 Be-ppm s N <2 <2 N N N N N <2 <2 N N N N <2 2 2 <2 <2 N <2 II <2 <2 <2 <2 <2 <200,000 N <2 N <2 2 <2 <2 N <2 N N N N N N <2 N Table 9. Semiquantitative Spectrographic Analyses of oxalic-acid leachates derived from the bronoform-light fraction from the 0. S. Virgin Islands.--Continued to CD Sample 8351050 835T051 83ST052 83SrOb<4 83ST055 83SP056 83ST057 83ST058 83ST059S 83SI060S 83ST061 83ST062 83ST063 83SP065 83ST067 83ST068 83ST069 83ST070 83ST071 83ST072 83STD73 83SI07<4 83ST075 83STC76 83ST077 83ST078 83ST079 83sroeo 83ST081 83ST082 8351063 83ST085 83ST086 83ST087 83ST088 83ST089 83ST090 83ST091 83ST092 83ST093 83ST09(4 83Sr09bS P3ST096 83Sr097 83SP098 Pi-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N K N Cd-ppm s N N N N N N N «J N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Co-ppm Cr-ppm s 100 70 15 10 100 100 150 100 300 150 300 100 20 100 100 100 100 70 70 70 150 100 70 150 150 150 150 100 '150 rTOO 100 200 100 200 150 200 300 200 150 200 200 150 150 200 150 s 150 150 50 50 100 30 50 100 150 50 <20 70 150 50 200 150 150 150 100 200 200 100 100 150 500 300 150 150 70 100 70 100 200 70 100 70 100 50 50 70 70 70 50 100 70 Cu-ppm s 700 100 50 1,000 1,000 500 700 500 300 700 300 50 150 700 300 300 200 300 200 500 700 700 150 700 300 700 700 700 700 700 700 700 300 500 500 700 700 700 700 700 700 500 700 700 700 La-ppm s N N N N N N <50 N N N N K N <5Q N N <50 N N N N N N <50 N N N N N N N N N N N <50 <50 N <50 N N N N <50 N Ho-ppm s N N N 100 N N N H N N N N N N N N K N N N 15 N N N N N N K N N N N N N N N N N N N N N N N N Nb-ppm s N N N N N N N N N N N N N N N N K N N N N N N N N N N N N N N N N N N N N N N N N N N N N Ni-ppm s 100 70 10 50 70 30 50 50 30 50 30 100 10 50 100 100 70 70 50 100 100 100 50 150 150 200 200 100 70 100 70 150 70 50 70 70 70 70 50 50 70 100 5C 100 100 Pb-ppm Sb-ppm s 300 200 100 1,000 70 70 70 70 100 300 70 150 70 70 300 150 150 200 200 150 200 150 150 100 100 200 300 300 100 200 50 100 200 150 200 200 100 100 100 70 70 <20 100 300 70 s N N N N N N N N N N N N N <200 N N N N N N N K N N N N N N N N N N N N N N N N N N N N N N N Sc-ppm s 20 10 10 <10 15 30 30 30 30 20 15 50 10 30 15 15 15 10 15 20 20 15 20 30 20 20 20 20 20 20 10 15 15 50 30 50 30 50 50 50 50 30 50 20 20 Sn-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N K N N N N N N N N N N N N N N Sr-ppm s 500 N N 500 500 N 300 N N 200 N N 300 N N N N N <200 N N 500 N <200 500 N N 200 200 N N 200 N 700 N 300 200 N N N 200 N <20C 300 300 Table 9. Semiguantitative Spectroqraphic Analyses of oxalic-acid leachates derived from the bromoform-light fraction from the 0. S. Virgin Islands. Continued COo to Sample 83ST^50 83ST051 83SI052 83ST05<4 83ST35S 83ST056 83ST057 83STOS8 83SI059S 83ST060S 83SI061 83SI062 83SI063 83ST06b 83ST067 83FI068 83ST069 83STD70 83ST071 83SI072 83ST073 8JSI07U 8JSI075 83ST076 83ST077 83ST078 83ST079 83SI080 83SI081 83ST082 83SI083 83ST085 R3ST086 83ST087 83ST088 83ST089 83FI090 83ST091 83ST092 83ST093 832I09U 83ST095S R3STOP6 83SPC97 83ST098 V-ppm s 700 700 300 200 1,000 1,^00 1,500 1,000 1,500 1,000 300 700 500 1,500 700 700 700 700 500 700 1,000 700 700 700 1,000 1,000 700 700 700 1,000 700 1,000 1,000 1,000 700 1,000 2,000 1,500 1,000 1,500 1,500 700 1,500 1, C 00 1,000 H-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Y-ppm s <20 70 20 N N 20 50 30 50 150 30 70 <20 30 50 50 100 50 50 30 50 N 50 50 50 20 50 50 50' 50: ' N <20 50 100 50 30 50 50 50 30 53 50 70 N N Zn-ppm s 1,000 700 500 N 500 N <500 N N N <500 <500 N <500 700 1,000 700 1,000 1,000 1,000 1,000 700 700 1,500 500 700 700 700 500 1,500 1,000 500 1,000 1 ,000 500 700 700 500 700 <500 500 <500 500 500 500 Zr-ppm s N N N y <20 50 100 50 70 100 30 100 50 50 <20 <20 20 N N N N N <20 <20 N 20 <20 20 20 30 N 20 50 50 50 50 70 70 70 70 70 50 100 50 30 Th-ppi s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Table 9. SeiBiguantitative Spectrographic Analyses of oxalic-acid leachates derived from the bromoform-light fraction from the U. S. Virgin Islands. Continued Sample 83SI099 83ST102S 83ST103S 83ST104S 83srio5s 83ST1P6S 83SI108S 83ST109S 83ST110S 83ST111S 84SJ001 84SJ002 84SJOG3 84SJ004 84SJOC5 84SJ006 84SJC07 64SJ008 843J009 8USJG10 84SJC11 84SJD12 84SJ013 84SJ014 645JP15 84SJ016 64SJ017 84SJ018 84SJQ19 84SJ020 84SJ021 84SJ022 84SJ023 84SJ024 84SJ025 84SJ026 84SJ n 27 84SJ028 84SJ029 t)4SJ030 84SJ031 84SJ032 84SJ033 84SJC34 84SJ035 latitude 18 20 58 18 18 28 18 18 57 18 21 33 18 21 44 18 21 U3 18 21 50 18 21 34 18 20 48 18 19 52 18 20 27 18 20 29 18 20 49 18 20 53 18 21 8 18 21 12 18 21 12 18 21 12 18 21 16 18 21 57 18 21 57 18 21 54 18 21 38 18 21 28 18 21 50 18 21 27 18 21 15 1821 7 18 21 20 18 21 30 18 21 4 18 20 57 18 20 55 18 20 32 18 20 42 18 21 29 18 21 33 18 21 9 18 20 2C 18 20 33 18 20 43 18 20 17 18 20 3 18 19 44 18 19 19 Lonqtude 64 57 U6 64 50 0 64 U9 55 64 50 21 64 49 32 64 49 42 64 52 12 64 51 46 64 51 45 64 50 47 6U U7 22 64 47 6 64 U6 51 6U U6 36 64 46 30 64 46 5 64 45 49 64 45 21 64 45 9 64 44 29 64 44 17 64 43 40 64 44 6 64 44 22 64 43 6 64 43 42 64 43 2 64 42 48 64 42 22 64 42 H ' 64 43 24 64 43 29 64 43 27 64 42 55 64 43 5 64 41 45 64 41 27 64 40 59 64 40 23 64 40 26 64 40 27 64 42 49 64 42 31 64 42 14 64 42 5 Fe-pct. Mg-pct. s 20.0. 20.0 20.0 20.0 20.0 20.0 20.0 1.5 20.0 ?Q.Q 15.0 20.0 15.0 15.0 15.0 20.0 15.0 20.0 20.0 20.0 20.0 20.0 15.0 20.0 20.0 15.0 20.0 15.0 15.0 20.0 15.0 20.0 15.0 15.0 15.0 20.0 20.0 20.0 15.0 20.0 15.0 15.0 15.0 70.0 7.0 5 7.0 5.0 5.0 5.0 5.0 3.0 3.0 3.0 3.0 5.0 3.0 5.0 7.0 7.0 7.0 7.0 7.0 7.0 7.0 5.0 5.0 5.0 7.0 7.0 3.0 3.0 7.0 7.0 5.0 3.0 5.0 7.0 5.0 5.0 5.0 3.0 .3 3.0 5.0 5.0 3.0 5.0 7.0 7.0 1.0 Ca-pct. s 3.0 .7 .7 1.5 1.5 1.0 .7 2.0 2.0 1.0 1.0 1.0 1.5 1.0 1.0 1.5 1.5 1.5 1.5 3.0 2.0 5.0 2.0 2.0 3.0 2.0 1.0 2.0 1.5 1.5 1.5 .7 1.0 1.0 .7 1.5 2.0 3.0 1.5 2.0 2.0 1.5 1.5 .7 3.0 Ti-pct. s .070 .070 .100 .200 .100 .100 .700 .100 .300 .100 .070 .100 .100 .150 .200 .300 .100 .200 .200 .150 .500 .500 .200 .300 . 150 .200 .500 .150 .200 .300 .100 .150 .150 .100 .100 .200 .070 .200 .200 .100 .100 .300 .150 .070 .300 Mn-ppm s 10,000 10,000 10,000 10,000 10,000 10,000 10,000 3,000 10,000 10,000 7,000 7,000 7,000 7,000 7,000 10,000 10,000 10,000 10,000 >10,000 >10,000 10,000 10,000 7,000 >10,000 >10,000 >10,000 7,000 7,000 5,000 >10,000 10,000 10,000 10,000 10,000 10,000 5,000 10,000 1,000 10,000 >10,000 10,000 10,000 >10,000 >10,000 Ag-ppm As-ppm Au-ppn s 15.0 N N N 3.0 200.0 N 30.0 7 .0 N N N N N 7.0 N 50.0 N N 15.0 100.0 1,000.0 7.0 300.0 70.0 200.0 30.0 50.0 100.0 500.0 30.0 20.0 50.0 50 .0 N N <1 .0 <1 .0 <1 .0 1 .0 500.0 1,000.0 500 .0 20.0 300.0 s N N N N N N N N N K N N N N N N N N N N N N N N y N N N N N N N N N N N N N N N N N N N N S N N N N N N N N N N N N K N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N B-ppm s 20 20 150 100 500 70 70 50 200 100 100 50 50 20 50 30 70 N 50 50 150 50 30 50 70 200 300 20 150 100 150 100 100 100 70 100 200 150 200 150 150 150 50 70 300 Ba-ppm Be-ppm s 700 300 700 1,500 500 1,000 700 1,000 1,500 1,500 200 150 150 150 300 500 500 500 700 1,500 1,500 500 1,500 500 1,000 2,000 500 700 700 300 1,000 500 700 700 1,000 500 <50 703 500 500 1,000 700 500 30 D 700 s N <2 <2 <2 N <2 N 2 2 N <2 <2 N N N N N N N N <2 N N N N N <2 N N <2 N N <2 <2 <? <2 N 3 <2 5 N 2 <2 N N Table 9. Semiquantitative Spectrographic Analyses of oxalic-acid leachates derived from the bromofcm-light fraction fro* the U. S. Virgin Islands.--Continued Sample 83ST099 83ST102S 83ST1C3S essTio^s 83SriD5S 83ST106S 83ST108S 83ST109S 83ET110S 83srms 8USJ001 84SJ002 8USJ003 8USJOOU 8USJ005 8U5J006 84SJ007 8USJ008 8HSJ009 8USJ010 8USJ01 1 8USJ012 8U5J013 84SJG1U 8U5J015 84SJ016 8USJ017 8USJ018 8USJQ19 8USJC20 8U3J021 8USJ022 8USJ023 8U5J02U 8U3J025 843J025 84SJ027 845J028 84SJ029 8USJ030 8HSJ-31 b45J032 84SJ033 845J03U 84SJ035 Bi-ppm s N N N N N N N N N 30 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Cd-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Co-ppm 5 200 200 150 200 200 200 200 150 700 200 70 100 150 150 100 150 200 150 150 500 200 100 200 100 200 700 150 100 ' 70 < . ' 70 500 150 100 150 100 70 < 10 100 100 70 500 150 150 200 100 Cr-ppm s 70 300 200 70 70 70 100 50 200 20 100 150 100 100 150 100 100 150 70 100 150 200 150 200 150 200 50 50 150 200 100 150 70 200 150 100 150 50 200 150 200 200 150 200 500 Cu-ppm La-ppm s 700 500 500 1,500 2,000 700 700 700 1,500 2,000 700 700 1,000 700 700 1,000 1,000 1,000 700 1,000 1,000 700 700 3,000 1,000 1,000 700 1,000 300 700 500 500 1,000 700 500 500 150 1,000 1,000 200 500 500 1,000 1,000 700 5 N N N N N N N N 50 <50 N N N N N N N N N N N <50 N N N N N N N N N N N N N N N N N <50 N N N N <50 Mo-ppm s N N N N 30 N N N N N N N N N N N N N N <10 N N N N N 20 N N N N 15 < 1 0 <1 0 N N N N N 15 N 10 10 N N 20 Nb-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Ni-ppm S 150 150 150 200 200 30 100 70 200 70 100 150 150 150 150 150 150 150 100 200 150 150 150 150 150 300 100 70 100 150 150 200 150 200 150 150 300 150 300 150 300 200 200 200 300 Pb-ppm Sb-ppm Sc-ppm Sn-pp» s 100 70 2,000 20 30 200 100 100 200 100 150 150 20 20 70 70 50 50 100 100 100 200 100 200 200 200 300 50 50 300 100 200 200 700 150 70 100 70 150 300 100 300 100 50 150 s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 500 N N N N N N 5 50 15 10 < 10 <10 15 20 < 10 20 70 <10 < 10 N N <10 <10 < 1 0 < 1 0 20 15 <10 15 10 20 10 20 30 < 10 10 15 15 15 15 10 15 <10 N 10 15 <10 10 10 15 20 < 10 s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 30 N N N N N N Sr-ppm s SCO N <200 500 500 300 N 700 500 200 <200 300 500 300 N <200 300 N <200 500 500 500 700 <200 500 1,000 N 300 200 N 300 200 N 300 N 500 N 300 N 300 500 300 <200 <200 N Table 9. Semiguantitative Spectrographic Analyses of oxalic-acid leachates derived from the bromoforin-light fraction from the U. S. Virgin Islands.--Continued to CD CJ1 Satiple 83ST099 83ST102S 83CT103S 83SI10I4S 83T105S 83ST106S 83Sn08S 83ST109S 83ST110S 83ST111S 8U5J001 8'4SJ002 8USJ003 8USJCOU 8I45JOG5 8USJ006 814SJ007 B^SJOOB 8U5J009 8USJC10 8U5J011 bi4SJ012 8USJD13 6USJC1U 8USJ015 8USJD16 8USJ017 8U5J018 8USJ019 8USJ020 8USJ021 8USJC22 8U3J023 8USJ32U 8USJ025 8USJ026 8USJC27 8U=;J028 8USJ029 8USJ030 8USJ031 8USJ032 8USJ033 euSJ03i4 &USJ035 V-ppm s 1,500 1,000 1,000 700 700 2,000 1,500 700 1,000 1,500 1,500 1,500 1,000 1,000 1,000 1,000 1,000 1,000 1,500 2,000 3,000 2,000 2,000 1,500 2,000 700 700 1,000 1,000 1,500 2,000 1,^00 1,000 1 ,000 1,COO 1,000 300 1,000 1 ,000 1,500 1,000 1,000 1,000 1,000 500 W-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Y-ppm s 30 50 50 N N 30 20 N 50 70 20 <20 N N <20 <20 N N 30 <20 N 30 N 30 20 30 50 N ff 50: ' 30 70 50 50 30 N N N 50 70 30 70 50 30 N Zn-pp» s <500 500 700 N 500 500 N N 500 1,000 700 1,000 500 500 1,000 700 500 700 1,000 500 700 1,500 700 1,000 700 5,000 2,000 700 700 1,500 700 1,000 1,000 2,000 700 1,000 10,000 1,500 2,000 1,500 1,000 1,500 1,500 700 20,000 Zr-ppn s 50 30 20 N N <20 N N 50 <20 20 <20 N N N H N N N N N N N N N <20 N N N N N <20 N N N N N N N 30 N 20 <20 N <20 Table 9. Semiquantitative Spectroqraphic Analyses of oxalic-acid leachates derived from the bromoform-light fraction from the U. S. Virgin Islands. Continued to CD Sample 84SJ036 84SJ038 84SJ039 B43J040 84SJ041 84SJ042 84SJ043 84SJ044 84SJ045 84SJ046 P4SJOU8 84SJOU9 e«SJ050 R4SJ051 843J053 84SJ054 84SJ055 84SJ056 P45J057 84SJ358 84SJ059 84SJ070 843J071 84SJ072 84SJC73 843JC74 843J075 P4SJ076 84SJC77 P4SJ078 R4SJ07Q 84SJ081 643J082 843J083 84SJOP4 P4SJOR5 t43J086 643.1087 84SJ088 PUSJ089 P4SJ090 84SJ091 84SJ092 h4SJ093 84SJC94 Latitude 1P 19 10 18 19 15 18 19 46 18 19 50 18 19 49 18 19 39 18 19 32 18 19 24 18 19 24 18 19 26 18 19 39 18 19 44 18 19 35 18 19 29 18 20 27 18 20 29 18 20 19 18 20 21 18 20 7 18 20 4 18 19 22 18 20 39 18 20 32 18 20 43 18 20 20 18 20 9 18 20 5 18 ?0 4 18 20 7 18 19 47 18 20 10 18 20 50 18 20 51 18 20 31 18 20 28 18 20 14 18 19 58 18 19 44 18 21 17 18 21 28 18 21 45 18 21 38 18 21 41 18 21 43 18 22 9 Longtude Fe-pct. 64 42 23 64 43 9 64 43 4 64 43 5 64 43 11 54 43 2D 64 43 18 64 44 4 64 43 50 64 43 44 64 45 57 64 45 48 64 45 30 64 45 27 64 45 32 64 45 34 64 45 36 64 45 41 64 45 42 64 45 51 64 46 48 64 46 18 64 46 7 64 45 40 64 46 22 64 46 13 64 46 16 64 46 37 64 46 36 64 46 40. - 64 47 27 64 44 31 64 44 32 64 44 27 64 44 30 64 44 23 64 44 23 64 44 27 64 47 36 64 47 24 64 48 31 64 49 0 64 49 16 64 49 31 64 48 25 s 10.0 15.0 20.0 20.0 15.0 20.0 15.0 20.0 15.0 15.0 15.0 20.0 15.0 20.0 20.0 20.0 20.0 20.0 20.0 20.0 20.0 20.0 20.0 20.0 7.0 20.0 20.0 20.0 15.0 15.0 20.0 15.0 15.0 20.0 20.0 20.0 20.0 20.0 15.0 20.0 20.0 20.0 15.0 20.0 15.0 Mg-pct. s 5.0 3.0 5.0 7.0 5.0 5.0 5.0 5.0 5.C 5.0 2.0 5.0 5.0 5.0 5.0 5.0 3.0 5.0 3.0 3.0 7.0 7.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 3.0 5.0 5.0 5.0 3.0 2.0 3.0 2.0 3.0 3.0 3.0 Ca-pct. s 1.5 .7 1.5 1.0 1.5 1.0 .7 .7 .7 .7 2.0 1.5 1.0 .7 2.0 2.0 2.0 1.5 1.5 .7 1.5 1.5 1.0 .7 2.0 1.5 1.5 1.0 1.5 1.5 1.0 1.0 1.0 1.0 1.0 .7 .7 .7 1.5 .7 3.0 1.5 1.5 1.5 1.5 Ti-pct. s .150 .070 .150 . 150 .070 .070 .050 .070 .070 .050 .070 .070 .070 .070 . 100 .200 .100 . 150 .100 .100 .100 . 150 .100 .200 .mo .070 .050 .070 .070 .070 .100 .100 .100 .100 .100 .100 .070 . 100 .150 .200 .070 .100 .100 .100 .100 Mn-ppm s >10,000 10,000 10,000 10,000 >10,000 10,000 10,000 7,000 10,000 5,000 >10,000 >10,000 10,000 10,000 10,000 7,000 >10,000 10,000 10,000 10,000 7,000 10,000 10,000 5,000 7,000 10,000 10,000 10,000 7,000 7,000 7,000 10,000 10,000 10,000 10,000 >10,000 >10,000 10,000 10,000 5,000 >10,000 >10,000 >10,000 7,000 5,000 Ag-ppm As-ppm Au-ppm s 50.0 100.0 700.0 20.0 N 100.0 150.0 5.0 7.0 10.0 7.0 5.0 N 1 .5 3.0 15.0 N N 3.0 N <1 .0 300.0 7.0 20.0 N N N N 2.0 7.0 30.0 N N N 10.0 <1 .0 15.0 7.0 N 2.C 30.0 500.0 N N 20.0 s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 5 N N N N N N N N N N N N N N N N N N N N N N N N N N N N S N N N N N N N N N N N N N N N N B-ppa s 300 100 100 50 50 200 200 100 100 100 200 100 100 70 20 30 N N N 20 20 <20 N 50 N 20 N 50 50 50 100 30 N N 20 70 50 70 70 n 50 N 200 150 150 Ba-ppm s 500 300 500 1,500 1,OOD 700 300 150 500 150 500 700 300 500 5HO 500 1,000 700 500 700 300 500 700 3&0 500 700 7CO 1,003 200 300 300 3CO 700 700 500 700 1,000 500 2,000 300 1,000 1,000 2,000 300 1,000 Be-ppm N <2 N 3 3 2 2 <2 N <2 <2 N <2 <2 <2 <2 <2 <2 N 2 N N N <2 N 3 3 <2 N N N <2 2 2 <2 <2 N <2 N N N N <2 N N Table 9. Semiquantitative Spectrographic Analyses of oxalic-acii leachates derived from the brosiof cm-light fraction from the 0. S. Virgin Islands.--Continued Sample Bi-ppm Cd-ppm s s Co-ppm s Cr-ppm Cu-ppm La-ppm s s s Pb-ppm Sb-ppm Sc-ppm S S 5 8USJT36 8USJ038 8U3J039 8USJOUO 8U3JOU1 8U3JOU2 HUSJOU3 8U3 JOUU 8U3J045 8U3JCU6 8USJOU8 8USJ3U9 8U5J050 8U3J051 8USJ053 843J05U 8USJ055 8U3J056 8U5JG57 8 U S J 0 5 8 bUSJ059 8U3J070 8USJC71 8U3J072 8U3J073 8U5J171* 8USJ075 8USJ076 OU3J077 eusjn78 8USJ079 PUSJ081 8USJ082 8^3 J ("83 8USJ08U 8U3J085 {-USJ086 8USJ087 8USJD88 845J089 8U3J090 8USJ091 PUSJ002 K U 3 J 0 0 3 8U-JOQU N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 300 70 100 150 200 150 100 70 70 70 150 200 150 70 100 150 300 150 200 150 150 150 200 150 100 150 150 200 ' 100 ,T50 150 70 100 100 150 150 150 100 200 50 300 700 500 200 50 500 200 150 200 100 200 200 300 150 200 150 200 200 150 150 200 100 150 150 150 150 150 150 200 150 200 200 150 150 150 200 100 70 70 100 70 100 150 150 150 50 70 50 70 20 1,000 500 700 300 700 300 200 300 500 200 300 500 500 2,000 300 500 300 500 500 300 700 700 300 500 500 500 500 500 500 700 700 500 500 700 500 700 1,000 500 700 300 700 1,000 500 1,500 300 N N N N N N N N N N <50 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 20 N N N N N N N N N 15 N N < 10 N N S N N N N N N N N N N N N N N N N N N N <10 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 300 150 150 200 200 200 150 150 150 150 500 200 200 150 100 150 150 150 200 150 200 150 150 150 100 150 150 150 100 150 200 150 150 150 150 150 200 200 200 100 150 150 150 200 50 300 100 100 200 300 300 150 100 150 100 100 100 70 300 70 200 100 70 70 70 100 70 200 200 70 100 100 100 70 70 200 100 150 100 300 150 300 70 200 70 150 300 500 <20 20 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N < 10 <1 0 15 10 <10 < 1 0 < 1 0 < 10 10 <10 10 15 10 10 < 1 0 <10 < 1 0 10 10 10 10 10 < 10 10 <10 10 < 10 < 10 < 10 <10 N 15 20 15 10 10 10 10 10 < 1 0 < 1 0 20 N N N N N N N N N N N N N 70 20 N N N N N N N N N N N N N N N N N N N N N N N N N N 70 N N N N N N N N 200 N 200 200 N N <200 N 200 200 200 200 <200 200 200 N N N 500 200 200 N 700 N N 300 200 N 300 N <200 N <200 N 300 200 500 <200 700 300 2,000 700 500 Table 9. Semiquantitative Spectrographic Analyses of oxalic-acid leachates derived from the bromoform-liaht fraction from the U. S. Virgin Islands. Continued Sample 814SJ03S P143J038 814SJ039 8t45JOt40 814SJOU1 8143JOU2 8145JOU3 814SJOUU 8U3JOU5 814SJOU6 bt45JCi48 814SJ0149 8143J050 814SJ051 814SJ053 8t4SJ05t4 814SJ055 8U3J056 8USJC57 8U3J058 8USJ059 P14SJ070 6I45JG71 8U3J072 P143JC73 8t43JC)7t4 814SJ075 8143J076 8USJC77 8U3J078 8USJ079 8USJ081 6USJ082 8USJC83 8U5JC8I* P145J085 8USJC86 8I4SJ087 8 U ? J ? 8 8 P U 5 J 0 8 9 8<*3J090 8U3J091 8143J092 8143JC93 PU3JC9t4 V- ppm s «^00 700 1,500 700 700 1,000 700 1,000 1,000 1,000 300 1,500 1,000 1,500 1,500 1 ,500 1,500 2,000 1,500 1,000 700 1,000 1,500 1,500 1,000 1 ,500 1,500 1,500 1,000 1,000 1, C 00 700 700 1,000 1,000 1,000 700 700 1,000 1,500 700 1,500 700 500 500 W-ppm s N N N N N N N N N N N N N N N N N N N N N N N h N N N N N N N N N N N N N N N N N N N N N Y-ppm s N 70 30 50 50 100 70 30 50 30 20 50 30 50 N N 20 20 20 50 <20 <20 20 20 N 50 50 50N ' N c, ' <20 20 50 50 50 70 50 70 20 N N 30 N N N Zn-ppm s 10,000 1,000 700 1,500 2,000 1,000 1,500 1,500 700 1,000 7,000 700 700 2,000 700 1,000 1,000 1,000 700 1,000 700 500 700 1,000 700 1,000 1,000 700 500 700 1,000 1,500 1,500 1,500 1,500 1,500 1 ,500 1,000 1,500 1,000 700 500 2,000 700 1,000 Zr-ppm s N 20 N <20 20 30 20 20 20 N N 20 20 20 20 20 30 30 <20 <20 <20 <20 N <20 20 20 20 20 N N 20 N N N <20 N <20 20 N N N 30 N N N Th-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Table 9. Seniquantitative Spectrographic Analyses of oxalic-acid leachates derived from the bronoform-light fraction from the U. S. Virgin Islands. Continued Saiple fl4SJ096 845J097 843J098 843J099 84SJ100 84SJ101 84SJ102 84SJ103 84SJ104 843J1D5 84SJ106 84SJ107 843J108 84SJ109 84SJ110 84SJ200 84SJ201 843J202 84SJ203 84SJ205 843J206 843J2C7 84SJ601 84FJ605 84SJ606 84SJ608 84SJM3 84SJ614 84SJ622 8USJ625 84SJ629 84SJ631 84?J639 84SJ641 84SJ646 84FJ649 8<iSJ653 8'tSJ655 84SJ657 8'tSJ658 8USJ659 84SJ660 84SJ665 84SJ668 84SJ670 Latitude 18 22 18 18 22 13 18 22 21 18 22 3 18 21 44 18 20 58 18 20 49 18 20 18 18 20 44 18 21 48 18 18 59 18 18 40 18 18 22 18 19 8 18 19 43 18 20 46 18 20 47 18 20 40 18 20 35 18 20 22 18 20 14 18 19 38 18 19 43 18 19 47 18 21 14 18 21 27 18 21 57 18 21 35 18 20 19 18 2C 3 18 19 38 18 19 10 18 20 44 18 19 12 18 20 18 18 21 17 18 21 14 18 19 44 18 19 50 18 19 44 18 19 40 18 19 U7 18 21 25 18 20 59 18 20 49 Longtude 64 45 26 64 44 55 64 44 20 64 43 5 64 42 32 64 41 11 64 41 27 64 40 6 64 40 10 64 41 43 64 43 15 64 42 36 64 42 13 64 41 21 64 39 5 64 44 59 64 44 56 64 44 52 64 44 59 64 44 48 64 44 52 64 44 56 64 46 23 64 45 55 64 45 13 64 44 54 64 43 12 64 44 16 64 47 36 64 47 > * 64 47 39 64 47 23 64 45 57 64 45 33 64 40 29 64 41 13 64 42 22 64 46 55 64 47 47 64 46 51 64 46 37 64 46 37 64 43 27 64 44 35 64 44 21 Fe-pct . s 15.0 20.0 20.0 15.0 15.0 20.0 20.0 20.0 20.0 20.0 20.0 20.0 20.0 15.0 20.0 20.0 20.0 20.0 20.0 20.0 20.0 15.0 15.0 15.0 15.0 7.0 10.0 10.0 20.0 20.0 20.0 50.0 15.0 20.0 15.0 15.0 15.0 15.0 15.0 15.0 20.0 15.0 15.0 10.0 15.0 Hg-pct . s 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 5.0 5.0 5.0 3.0 2.0 2.0 2.0 3.0 3.0 3.0 3.0 5.0 2.0 3.0 7.0 1.5 5.0 5.0 5.0 5.0 5.0 .7 5.0 5.0 5.0 3.C 7.0 7.0 7.0 7.0 10.0 5.0 1.5 3.0 5.0 Ca-pct. s 1.5 3.0 2.0 2.0 2.0 1.5 1.0 1.0 1.5 2.0 2.0 1.5 2.0 1.5 .7 1.5 1.5 1.5 2.0 3.0 2.0 1.5 2.0 .5 .7 2.0 .7 2.0 1.0 1.0 1.0 .7 .5 .3 .7 1.0 1.0 1.0 1.0 1.0 .7 1.0 1.5 2.0 .7 Ti-pct. s .070 .150 .100 .150 .100 .100 .070 .100 .100 .150 .070 .070 .100 .100 .100 .100 .070 .050 .150 .070 . 100 .100 .100 . 100 . 100 . 100 .070 .200 .070 .050 .050 .150 .150 .030 . 100 .070 .200 . 100 . 100 .100 .100 .100 .100 .070 .050 Mn-ppni s >10,000 >10,000 10,000 >10,000 >10,000 7,000 10,000 >10,000 >10,000 >10,000 ' >10,000 5,000 >10,000 5,000 7,000 >10,000 10,000 >10,000 10,000 >10,000 10,000 10,000 >10,000 10,000 3,000 3,000 2,000 10,000 10,000 7,000 10,000 2,000 5,000 7,000 7,000 5,000 5,000 5,000 3,000 3,000 2,000 3, COO >10,000 >10,000 2,000 Rg-ppm As-pptn Au-ppn s N 100.0 200.0 N N 200.0 3.0 200.0 <1 .0 <1 .0 50.0 5.0 15.0 N 7.0 N <1 .0 5.0 N 7 .0 N N N N N N 1 .0 3.0 N <1 .0 N <1 .0 3.0 <1 .0 20.0 15.0 3.0 N 20.0 15.0 7.0 3.0 N 1 .5 N s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N s N N N N N N N N N N N N N N N N N N N * N N N N N N N N N N N N N N N N tf N N N N N N N N R-ppn s 150 150 150 200 150 200 200 200 200 200 150 150 100 100 150 N N 30 50 50 70 150 100 150 30 70 300 70 50 50 20 70 70 30 100 70 30 50 50 20 <20 30 100 100 20 Ra-ppm Be-ppm s 1,000 1,000 1,000 1,500 2,000 300 700 1,000 1,500 1,500 1,000 200 700 150 70 1,000 700 1,000 1,000 1,500 1,000 3CO 1,500 300 200 500 1,500 1 ,000 300 300 700 5,000 500 500 7^0 700 700 <50 200 <5D 70 70 3,000 1,000 150 s N N N N N N N 2 2 N N N N N N 2 3 5 <2 5 3 N <2 3 N N <2 <2 <2 7 N <2 N <2 5 5 N N N N <2 N <2 <2 3 Table 9. Semiguantitatlve Spectrographic Analyses of oxalic-acid leachates derived from the bronoforn-liaht fraction from the U. S. Virgin Islands. Continued Sample 8USJ096 84SJ097 8USJ098 6U3J099 8USJ100 8USJ1G1 8USJ102 PUSJ103 84SJ10U 8USJ105 8USJ106 8USJ107 84SJ108 8USJ1C9 8U3J110 843J200 8U5J201 8USJ202 8U3J203 8USJ205 8USJ2:>6 8USJ2G7 Bi-ppm Cd-ppm s s Co-ppm Cr-ppm s s Cu-ppm La-ppm s s 8U5J605 84SJ606 8USJ608 8USJ613 8USJ61U 8USJ622 8USJ625 8USJ629 84SJ631 8USJ639 8USJ6U1 84SJ646 8USJ6U9 84SJ6b3 8USJ655 8U9J658 8USJ659 8USJ660 8USJ665 8USJ668 84SJ670 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 100 N N N N N N N N N N N 500 200 200 700 700 150 150 150 150 500 500 150 700 20 30 500 100 200 300 200 200 150 700 200 150 150 100 300 '200 300 150 200 200 150 150 150 150 200 150 200 150 1,000 300 150 70 70 50 200 150 500 300 200 200 100 100 150 150 50 70 100 70 50 150 150 150 200 500 300 20 100 150 150 150 500 200 700 200 200 150 100 300 200 300 200 300 200 100 150 100 500 300 700 500 500 300 500 500 700 500 500 200 300 70 100 500 200 200 500 500 300 300 500 200 300 300 500 1,000 500 300 300 1 ,000 500 700 150 200 500 100 500 300 500 300 700 700 100 N N N N N N N N N N N N N N N N N N N <50 N N N N N N N N N N N N N N N N N N N N N N N N N Ho-ppm s N N N 10 10 N N 15 10 N N N N N N N N N N N N N N <10 N N N N N N N 300 N 15 " N N N N N N N N N N Nb-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Ni-ppm s 200 150 150 300 200 200 200 200 200 200 200 150 200 150 100 150 150 150 150 200 200 200 200 200 70 70 300 150 200 200 100 200 200 200 150 100 200 70 200 100 200 100 200 200 100 Pb-ppm s 20 70 70 200 200 70 500 70 70 100 20 50 50 50 200 300 200 500 150 300 100 70 200 100 70 N 20 70 150 150 70 1,500 N 70 50 50 <20 30 20 50 <20 70 70 100 <20 10 10 10 10 10 10 15 10 Sb-ppm Sc-ppm s s 10 !10 15 20 15 N 20 10 15 50 15 20 50 50 15 10 10 20 10 15 20 70 Sn-ppm s N N N 50 <20 N N N N N N N N N N N N N N N N N N 150 N N N N N N N N N N N N N N N N N N N N N Sr-ppm s 500 300 500 500 500 300 300 300 300 500 1,500 300 500 200 N 200 N 200 200 300 200 N 500 N N 1,000 2,000 700 N <200 N <200 N N 1,000 500 N N N N N N 300 300 <200 Table 9. Semiquantitative Spectrographic Analyses of oxalic-acid leachates derived from the bromoforn-light fraction from the U. S. Virgin Islands. Continued Satiple 8I4SJ096 8I45J097 8USJ098 8I4SJ099 8I4SJ100 8USJ101 8USJ102 8I4SJ1H3 8I45J10I4 RI4SJ105 8USJ106 8USJ1C7 8U3J1G8 8USJ109 8U3J110 BU5J230 8USJ201 8USJ202 8USJ203 814SJ205 8i4SJ2"6 8USJ207 RI4SJ601 8USJ605 8I4SJ606 84SJ608 8I4SJ613 8USJ6T4 8USJ622 8USJ625 8I4SJ629 8I4SJ631 8USJ639 8U5J6I41 8HSJ6U6 8I4SJ6I49 8UEJ653 8USJ655 8I4SJ657 8USJ658 8I4SJ659 8USJ660 8USJ665 8I4SJ668 8USJ67C V-ppw s 700 700 1,000 1,000 1 ,500 2,000 1,500 1,000 1,000 1,500 1,000 1,500 1 ,500 300 1 ,500 2,000 2,000 1,500 2,000 1,500 1,500 1,500 1,COO 700 1 ,500 700 200 1,000 1,000 1,000 1,000 700 700 700 500 300 700 5HQ 1,000 1,000 700 700 1,000 700 700 W-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Y-ppw s N 30 50 50 50 50 50 50 50 20 N 70 30 20 50 20 50 70 N 150 70 50 30 150 N N N N 20' <20 ,. <20 30 N <20 N N <20 N N N <20 N 50 50 70 Zn-ppm s 500 500 500 700 700 1,000 700 1,000 1,000 1,000 <500 700 700 1,000 1,000 1,000 1 ,500 1,500 1,000 2,000 1,500 700 1,000 1,500 <500 N 700 <500 500 500 700 1,500 <500 5,000 1,000 1,000 <500 N <500 <500 <500 <500 500 1,000 1,000 Zr-ppm s N 20 N N 70 N N N N N N <20 20 N N N N N <20 <20 <20 20 20 50 N N N N N <20 N 70 <20 N N N N <20 <20 N 20 <20 20 N N Th-ppw s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Table 9. Semiquantitative Spectrographic Analyses of oxalic-acid leachates derived from the bromoform-liaht fraction from the 0. S. Virgin Islands. Continued CO ! » to Sample 8USJ673 8USJ676 8USJ684 84SJ690 84SJ696 84SJ699 84SJ716 84SJ723 84SJ725 84?J729 84SJ733 8USJ735 64SJ736 8USJ738 84SJ739 8USJ739 8USJ741 8<4SJ742 84SJ7U3 84S:001 8USC002 euSCOO? 84ST004 84?~006 84SCP07 8U?C008 sus:o09 8USC010 84SC011S 84SC:012 8US:013 8UFC014 84SC015 84SC016 84??017 8USC018 84^2010 8USC:020 84SC021 84SC022 8US3023 84SC024 84SC025 84SC026 84?:C028 Latitude 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 20 29 20 11 20 R 20 7 20 14 19 20 20 33 20 42 20 40 20 3U 20 40 22 14 20 50 21 31 21 38 21 38 21 13 21 21 21 22 46 1 46 17 46 8 45 54 45 11 45 18 45 1 46 2 46 17 46 47 46 39 46 51 46 23 46 27 46 33 46 34 46 39 45 39 45 40 45 38 45 37 45 50 44 48 45 54 44 1 44 59 Longtude Fe-pct. 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 44 43 43 43 42 42 44 45 45 45 45 44 44 44 44 44 44 44 44 49 48 49 49 49 49 49 45 45 45 46 46 47 47 47 48 47 46 46 46 47 47 48 46 48 47 2 39 33 50 43 3 45 15 35 33 25 55 35 0 7 9 15 15 8 21 37 7 44 47 39 19 49 40 43 10,. - 35 30 22 20 7 39 22 55 59 42 57 54 7 55 37 s 15.0 30.0 15.0 15.0 15.0 15.0 10.0 10.0 20.0 20.0 15.0 30.0 10.0 20.0 20.0 20.0 15.0 15.0 15.0 15.0 15.0 15.0 15.0 15.0 15.0 10.0 15.0 15.0 15.0 15.0 15.0 15.0 15.0 15.0 15.0 15.0 15.0 15.0 15.0 15.0 15.0 10.0 20.0 15.0 15.0 Mg-pct . s 7.0 1.5 2.0 5.0 2.0 5.0 5.0 5.0 5.0 7.0 5.0 2.0 5.0 1.5 2.0 2.0 3.0 3.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 7.0 7.0 7.0 5.0 7.0 7.0 7.0 5.0 7.0 7.0 7.0 7.0 7.0 5.0 7.0 5.0 7.0 5.0 5.0 Ca-pct. s .7 2.0 .7 1.5 .7 .7 1.0 .7 .7 1.0 1.0 2.0 .7 1.5 .7 .7 .7 1.5 1.0 1.5 1.5 1.5 1.5 2.0 2.0 1.5 1.5 1.5 3.0 3.0 3.0 1.5 2.0 2.0 1.5 1.5 2.0 2.0 1.5 1.5 1.5 2.0 3.0 3.0 1.5 Ti-pct. s .100 .070 .070 .150 .150 .050 .150 .100 .100 .500 .200 .500 .100 .150 .070 .070 .200 .100 .100 .700 . 100 .150 .070 .150 .300 .150 .500 .200 .300 .200 .200 .500 .150 .150 .200 .200 .200 .200 .150 .500 .500 .300 .200 .500 .150 Mn-ppm s 3,000 700 5,000 7,000 10,000 5,000 5,000 3,000 7,000 5,000 7,000 10,000 10,000 >10,000 3,000 3,000 10,000 >10,000 10,000 2,000 7,000 7,000 7,000 >10,000 7,000 3,000 5,000 10,000 >10,000 10,000 >10,000 5,000 10,000 7,000 10,000 7,000 5,000 7,000 3,000 5,000 5,000 3,000 7,000 3,000 5,000 Ag-ppm As-ppB Au-ppn s N 1 .5 7.0 1 .5 20.0 3 .0 1 .5 3.0 15.0 15.0 1 .0 300.0 10.0 N N N 3.0 N 3.0 1 .5 5.0 10.0 15.0 N N N N N N 3.0 <1 .0 N 1 .5 N 10.0 5.0 N 15.0 20.0 <1 .0 N N 7.0 N N s N N N N N N N N N N »» N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N s N N N N N N N N N N N N N N N »J N N N N N N N N N N N N N N N N N N N N N N N N N N N N N B-ppm s 70 1CO 70 100 100 70 70 30 50 50 70 70 70 70 70 70 70 100 100 50 50 70 50 100 100 100 150 100 150 70 100 100 70 100 50 70 70 70 100 70 70 70 70 200 150 Ba-ppa Be-ppm s 50 2,000 1,500 300 700 <50 150 100 300 300 500 1,000 700 3,000 700 700 1,000 1,000 500 700 200 300 300 700 500 300 300 500 700 500 5^0 200 500 300 300 500 300 300 1,000 200 200 500 300 700 300 s <2 N 3 <2 3 <2 N N <2 N <2 <2 <? <2 <2 <2 2 <2 2 N <2 <2 N <2 <2 N N <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 N <2 <2 N Table 9. Semiquantitative Spectrographic Analyses of oxalic-acid leachates derived from the bromoform-light fraction from the U. S. Virgin Islands.--Continued CO Sample 8USJ673 8USJ676 8USJ684 BUSJ690 8USJ696 8USJ699 8USJ716 8USJ723 84SJ725 8USJ729 8USJ733 8USJ735 8USJ736 84SJ738 8USJ739 8USJ739 8USJ7U1 8USJ7U2 8USJ7U3 8USC001 8USZ002 8HS"003 8USCOOU 8us~oo6 8USC007 8HSC008 8USC009 84SC010 8USC011S 8USC012 8US"013 84SC01H 8USC015 8USC016 8USC017 8USC018 8USC019 8US3020 8USC021 8US"022 8US~023 8US"02U 8 'I S 3 0 ? 5 8USCO?f 8^^:028 Bi -ppm s N 20 K N N N N N N N K N K K N N N N N N K N N K N N N N H N N K N K K N K N N N N S N N N Cd-ppm s N N K N N K N N N N K N K N v N K N N N K N K K K N K N N N N K N N N N N N K K N N N K N Co-ppm s 150 10 150 150 200 150 150 150 300 200 200 300 150 1,000 150 150 200 300 150 150 200 200 150 200 150 150 150 200 300 200 200 150 150 150 200 200 150 200 200 150 150 150 200 200 200 Cr-ppra s 300 300 200 70 300 100 150 100 300 300 200 150 150 300 150 150 200 150 200 150 150 200 70 150 100 200 300 100 200 150 150 150 150 150 300 200 200 200 200 150 200 200 150 300 200 Cu-ppm s 200 1,000 1 ,500 100 2,000 200 300 300 300 300 300 700 200 700 1,000 1,000 300 300 300 1,500 300 500 500 500 1,000 700 500 500 300 300 300 300 300 500 500 500 500 500 700 700 300 700 500 700 300 La-ppm s K N N N K N K K N N N K N N N N N N N N K N N N N K N N N N N N N N N N K K N N N N N K N Mo-ppm s N 150 70 N 20 N N K N K N N K N 100 100 K N N K N N K N N N N N N N N N H N K N N N H N K N N N N Nb-ppm s N N N N N N N N N N H N N K K K K N N N N N N N N H N N <50 N N N N N N N K N N N K N K K N Ni-ppra s 200 300 150 100 150 150 100 100 100 150 100 200 150 200 100 100 100 100 150 150 150 150 70 150 150 200 200 150 300 150 100 150 150 150 200 200 150 150 200 150 200 200 150 300 200 Pb-ppm s 50 300 300 100 300 150 50 50 150 100 100 200 150 100 300 300 150 200 200 30 50 100 50 150 100 30 70 70 100 100 50 50 70 70 70 50 70 70 30 70 70 50 70 100 100 Sb-ppra s N N N N N N N N N K N N N N N JJ N N N N N N N K N N N N N K N N V K N V N N N K K N N N N Sc-ppm s 20 15 20 10 20 15 <10 <10 <10 <10 <10 50 20 20 15 15 20 15 20 10 10 10 10 15 30 10 20 15 20 20 20 15 15 20 15 15 15 15 K 15 15 15 20 15 10 Sn-ppm s N N N K N K N N N K N K N N N N N K N N K N N K N N N N N N K K H K K N N N K N K N N N N Sr-ppm s <200 700 N 200 N N N N N N <200 300 N 300 N N <200 300 5CO 500 N <200 <200 N <200 200 N N N N H N N N N N <200 N 300 <200 N 500 N 300 N Table 9. Semiquantitative Spectrographic Analyses of oxalic-acid leachates derived from the bromoform-light fraction from the U. S. Virgin Islands. Continued to Satiple 8<4SJ673 84SJ676 8<4SJ68<4 8USJ690 84SJ696 84SJ699 84SJ716 84SJ723 84SJ725 80SJ729 8USJ733 814SJ735 8USJ736 8USJ738 8USJ739 84SJ739 84SJ741 8USJ7U2 84.SJ743 SU^OOI 84SC302 84SC003 84SC004 845^006 845^007 R4S3008 sascoog 84SC010 814SC011S 8USC012 84SC313 8<4S~01<4 8USC015 8USC016 8USC017 84SC018 8USC019 8USr020 8USC021 84SC022 8USC023 8USC02U 84SC025 84SC026 8USC028 V-ppm s «^00 1,SOO 700 500 700 150 500 300 1 ,000 1,000 1,000 1,000 500 1,500 C DO 500 700 700 700 700 700 1,000 700 700 700 700 700 700 1,000 1,000 700 700 700 700 700 700 1,000 700 1,000 700 700 500 700 1,000 700 W-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Y-ppiB s 70 N 70 <20 50 50 N N <20 <20 20 50 30 50 50 50 50 50 30 N N N N 20 50 N <20 N 50 30 20 20 30 30 30 N N <20 N <20 20 N <20 30 N Zn-ppm s 1,000 1,500 2,000 1,500 3,000 700 500 500 700 500 500 500 1,000 500 2,000 2,000 700 1,000 1,000 <500 700 700 1,000 700 700 700 700 700 700 / . - 700 1,000 1,000 1,000 700 1,000 700 700 700 700 1,000 1 ,000 1,000 700 1,500 1,000 Zr-ppm s N 30 20 20 <20 N N N <20 <20 N <20 N <20 N N N <20 N N 20 <20 N 20 <20 <20 70 70 100 70 70 50 70 50 70 30 70 50 50 50 50 30 70 20 30 Th-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Table 9. Semiquantitative Spectrographic Analyses of oxalic-acid leachates derived from the bronofore-light fraction fron the U. S. Virgin Islands .--Continued Sample 84SC029 84SC029 84SC030 84SCP31 84S~033 84s~:)34s 84S~035S 84S3036S 84SC037S euscnses 84S3040 84FC041 84s::o42 84SCOU3 84rc*044 84SC045 84SC046 84ST047 84SC048 84S~049 8453050 84SC051 8US3052 8USC053 8USZ354 8453055 845^056 8USC057 84S3058 8453059 84SC060 84SC061 84SC062 84SC063 84SC064 84SC065 8USC066 84SC067 84S3068 8USC069 8453070 84SC071 84SC072 84SC074S 8USC075S Latitude 17 45 16 17 44 17 17 44 23 17 44 50 17 U5 10 17 45 10 17 45 18 17 45 8 17 44 47 17 45 36 17 45 47 17 45 46 17 46 14 17 45 50 17 45 2 17 44 28 17 44 49 17 44 53 17 45 3 17 45 3 17 45 0 17 43 47 17 43 50 17 43 53 17 44 21 17 44 24 17 44 29 17 44 5 17 44 26 17 44 32 17 44 21 17 44 7 17 44 3 17 43 26 17 42 43 17 42 55 17 42 51 17 43 4 17 43 4 17 43 6 17 43 55 17 45 34 17 46 6 17 45 17 17 44 54 Lonqtude Fe-pct. Mg-pct. 64 47 16 64 48 26 64 49 0 64 48 35 64 48 37 64 51 13 64 50 46 64 50 24 64 50 5 64 50 21 64 52 20 64 52 23 64 52 28 64 53 4 64 53 28 64 53 2 64 52 36 64 52 6 fi4 52 8 64 51 42 64 51 43 64 52 38 64 51 59 64 51 51 64 51 41 64 51 38 64 51 40 64 51 24 64 51 12 6U 50 53. - 64 50 19 64 50 2 64 49 38 64 52 0 64 52 0 64 51 38 64 51 4 64 51 12 64 50 40 64 49 58 64 49 21 64 45 50 64 45 2U 64 46 9 64 46 26 s 15.0 15.0 15.0 15.0 15.0 15.0 10.0 15.0 10.0 20.0 20.0 20.0 30.0 15.0 20.0 20.0 10.0 10.0 15.0 20.0 10.0 15.0 15.0 15.0 15.0 15.0 15.0 15.0 15.0 20.0 15.0 15.0 15.0 15.0 15.0 15.0 10.0 15.0 15.0 20.0 15.0 15.0 15.0 10.0 7.0 s 7.0 7.0 5.0 5.0 5.0 7.0 7.0 5.0 5.0 7.0 7.0 7.0 7.C 7.0 7.0 7.0 3.0 3.0 3.0 5.0 5.0 5.0 5.0 7.0 5.0 5.0 7.0 5.0 7.0 7.0 5.0 5.0 5.0 7.0 5.0 7.0 3.0 5.0 5.0 5.0 5.0 3.0 5.0 7.0 3.0 Ca-pct. s 1.5 1.5 2.0 3.0 3.0 1.5 1.5 2.0 2.0 2.0 1.0 1.5 1.0 1.5 2.0 3.0 1.0 1.5 2.0 2.0 1.5 1.5 2.0 1.0 1.5 1.0 1.5 1.5 1.0 1.5 1.5 1.5 1.5 2.0 2.0 2.0 2.0 1.5 1.0 1.5 .7 .7 1.0 .7 .5 Ti-pct. s .150 .150 .150 .150 .200 .150 .070 .070 .070 .070 . 150 .150 .300 .150 .200 .200 .150 .150 .150 .150 .100 .150 .150 .200 .200 . 150 .150 .150 .200 .200 .150 .150 .200 .150 .150 .150 . 100 . 100 .150 .150 .150 .100 .150 .100 .150 Mn-ppm s 5,000 5,000 10,000 10,000 5,000 7,000 10,000 7,000 >10,000 5,000 5,000 7,000 10,000 7,000 10,000 >10,000 10,000 7,000 7,000 7,000 10,000 >10,000 7,000 5,000 10,000 10,000 7,000 >10,000 5,000 7,000 10,000 >10,000 7,000 10,000 >10,000 5,000 7,000 5,000 5,000 5,000 3,000 3,000 3,000 3,000 3,000 Ag-ppm As-ppm Au-ppffl s N N N 3.0 N 5.0 N <1 .0 <1 .0 <1 .0 7.0 N N 30.0 N N N N <1 .0 N N N 7.0 N <1 .0 N N 5.0 5.0 N N N N N 10.0 10.0 N N N N N 7.0 10.0 30.0 15.0 s N N N N N W N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N B-ppm s 70 70 70 100 100 70 7D 100 150 150 70 50 100 70 70 100 70 70 1CO 100 50 100 70 70 70 70 30 50 50 30 50 50 70 30 50 70 70 70 70 70 70 100 150 200 100 Ra-ppm Pe-ppm s 300 300 700 1,000 700 300 3"0 150 2,000 300 300 700 7?D 700 1,000 2,000 700 500 1,500 300 500 1,000 700 300 1 ,000 500 200 1,500 150 200 300 700 500 700 1,500 500 500 300 500 500 300 300 300 700 700 s <2 <2 <2 N <2 N N <2 <2 <2 <"2 N <2 <2 <2 <? <2 <2 ? <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 N N <2 <2 <2 <2 <2 Table 9. Semiquantitative Spectroqraphic Analyses of oxalic-acid leachates derived from the bronoform-light fraction from the 0. S. Virgin Islands. Continued ro Sample 84SC029 84SC029 84SCD30 8453031 84SC033 8US3034S 84SC035S 84530375 84SC338S 8KSCC40 84SCOK1 84^3042 84SC043 814SC044 84S3045 84S"046 843CD47 8 4 S C 0 4 b P4SC049 84SC050 8423051 84SC052 84SC353 84SC054 8433055 84SC056 8453057 8453058 8453059 8453060 8453061 8453062 8453063 8453064 8453065 8453066 8453067 8453068 8453069 8453070 8453071 8453072 84F3074S 84S3075S Bi-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Cd-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N M H N N N N N N N N N N N N N N N Co-ppm s 150 150 200 200 150 150 200 150 300 150 150 200 200 300 300 300 200 150 300 200 150 150 150 150 300 300 150 300 '150 / /ISO 150 300 150 200 300 150 150 150 100 150 150 100 150 150 100 Cr-ppm s 200 200 150 200 300 70 70 300 150 100 200 300 700 1,000 1,000 700 300 200 300 150 150 200 500 150 500 150 150 200 150 200 150 200 150 150 150 200 150 150 200 150 150 200 200 200 200 Cu-ppm La-ppm s 500 500 700 700 1,000 300 200 300 500 200 500 500 700 700 700 1,000 500 500 700 500 300 500 500 300 500 500 500 500 300 500 300 300 300 500 300 300 200 200 500 500 300 300 700 500 300 s N N N N N N N N N N N N <50 N N N N N N N N N N N N N N N N N N N N N N N N N H N N N N N N Mo-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N H N N N N N N N N N N N N Nb-pp» s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Ni-ppm s 150 150 150 200 300 100 70 200 150 70 150 300 500 2,000 700 1,000 200 200 500 150 150 200 300 150 300 200 150 300 150 200 150 150 150 150 200 150 70 70 100 100 100 150 150 150 100 Pb-ppm s 70 70 100 100 70 70 50 50 50 70 100 100 150 70 200 500 150 200 200 100 150 150 70 70 150 200 70 150 150 70 70 70 150 70 150 30 100 30 70 150 50 50 30 30 20 Sb-ppm Sc-ppm 5 N K N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N S 10 10 10 15 15 10 <10 <10 N 30 10 <1C 20 15 15 15 20 20 20 15 10 15 15 15 20 15 15 20 10 15 15 10 15 20 15 15 10 <10 <10 10 <10 N <10 N N Sn-ppm s N N N N N N N N N N N N N N N 30 N N N N N N N N N N N N N N N H N N N N N N N N N 20 N N N Sr-ppm s N N 200 700 300 N N N 700 N N N N N N 300 N N 5CO <200 N N N N N N N N N N N N N N <200 300 N N 700 H N 700 300 700 500 Table 9, Semiquantitative Spectrographic Analyses of oxalic-aci3 leachates derived from the broaoform-light fraction from the U. S. Virgin Islands. Continued ro Sanple 814SCD29 814SC029 8US3030 84SC031 84SC033 8<4S?034S 814S3035S 814SC036S 84SC037S 8US"038S euscouo susrou 1 814SCOU2 8USC0143 8US30U4 8USC0145 8USC0146 8<4S3047 P14S?0148 8^S-0(49 8USC050 8USC051 814SC052 8US3053 8145:054 8USC055 8USC056 8US-057 8USC058 8USC059 84SC060 8USC061 8USC062 8USC063 814SC06U 814SC065 814SC066 8US3067 8USC068 814S3069 84SC070 814SC071 814SC072 814SC074S 8USC075S V- ppm s 700 700 1,000 700 1,000 500 500 500 700 1,000 500 500 700 5?0 500 500 300 500 500 500 500 700 500 500 700 700 700 700 500 700 700 700 700 700 700 700 700 700 500 700 500 300 500 500 500 W-ppm s N U N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N K N N N N N N N N N Y-ppm s N N N <20 20 20 20 N N 20 20 <20 50 30 50 50 50 50 30 30 <20 50 30 30 50 30 <20 50 <20 ' 30 ,. 20 20 20 <20 20 N N N N <20 N N N N N Zn-ppm s 700 700 1,500 1,000 1,000 1,000 1,000 1,000 <500 700 1 ,000 700 1 ,000 1 ,000 1,000 1,500 1 ,500 1,500 2,000 1 ,000 1,500 1,500 1 ,000 1,000 1,500 1 ,000 1,000 1,000 1,000 ;' 1,000 1,000 1,000 1,500 1,000 1,000 700 500 700 700 700 700 1,000 1,000 700 700 Zr-ppm s 20 20 20 20 <20 <20 <20 <20 <20 <20 <20 <20 20 <20 20 20 50 20 20 <20 <20 50 50 <20 50 50 30 50 20 20 <20 <20 20 50 100 70 50 50 20 50 20 20 <20 N N Th-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Table 9. Semiquantitative Spectrographic Analyses of oxalic-acid leachates derived from the hromof orin-light fraction from the U. S. Virgin Islands.--Continued to h-1 CO Sample 84SC176S 84SC077S 8(4S3078S 84SC079S pasroeos 84SC081S 84FC082S SaSSOeSS euscoeus 84SC:08bS 84SZ086 84SZ087 84S:088S 84SC089S 8USC090S 84^:0915 8US3093S 84SC:094S 84S:095S 84?im96S 84S3098 84SC100S 84SC101S 84S3102S 84SC103S 84SC104S R4SC105S 84S3107S 84sno8s 84SC109S 84SC110S 84SC111S 84SC112S 84SC113S 84S-114S 84SZ115S 84SC"116S 8USC117S 84SC118S 84SZ119S 84SC120S 84SC121S 84SC122S 84s:i?3s 84SC124S Latitude 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 44 46 44 37 1414 29 M(4 19 (414 10 UU 3 U3 59 I4U 21 1414 U6 45 1*4 M 52 i4U 17 U3 37 U3 23 142 35 42 54 43 35 143 41 (43 50 14M 5 45 9 U5 13 45 5 14(4 52 1414 15 1414 2U 1414 8 (4<4 14(4 MM 146 143 140 (43 22 143 14 <43 8 (43 30 U2 49 <42 19 <42 9 <42 35 (42 29 <42 59 <42 53 143 6 143 16 <43 MO 143 57 Longtude Fe-pct. 614 146 614 U7 6<4 U7 6<4 <46 614 147 61* 147 6<4 46 6<4 <45 614 146 614 145 6(4 U^ 614 145 614 145 614 45 61* 147 614 147 6(4 147 614 146 614 146 6U U5 6 <4 14(4 614 143 6(4 <4<4 6M (43 6U U3 6«4 143 614 143 6(4 14(4 6<4 <4<4 6(4 <4<4 64 44 6(4 4U 64 145 614 (4<4 64 (42 6(4 142 6(4 43 64 43 64 43 64 43 64 44 64 43 64 42 64 43 64 42 52 18 46 38 2 28 1 54 3 16 14 17 17 54 13 27 16 49 29 34 30 36 4 32 15 39 55 37 18' 33-. ' 27 51 18 1 45 47 10 23 47 50 16 33 54 29 43 s 10.0 15.0 10.0 15.0 7.0 15.0 10.0 5.0 10.0 7.0 5.0 7.0 3.0 7.0 7.0 7.0 7.0 10.0 7.0 10.0 5.0 7.0 7.0 7.0 10.0 5.0 10.0 7.0 7.0 3.0 7.0 3.0 5.0 7.0 15.0 15.0 7.0 10.0 7.0 5.0 3.0 7.0 10.0 7.0 10.0 Kg-pct . s 2.0 1 .5 3.0 5.0 7.0 1.5 5.0 5.0 5.0 5.0 5.0 7.0 5.0 5.0 5.0 5.0 5.0 5.0 3.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 3.0 7.0 5.0 3.0 7.0 7.0 5.0 2.0 7.0 3.0 7.0 7.0 20.0 5.0 5.0 5.0 5.0 Ca -pet . s 2.0 1.5 3.0 1.0 .7 2.0 1.0 .7 .5 1.0 .7 2.0 .5 1.0 1.5 1.5 1.0 1.0 1.0 1.0 .5 1.0 1.0 1.0 1.5 .5 .7 .7 .7 .7 1.0 .3 .7 1.0 1.5 3.0 1.0 1.0 .5 .3 .3 .7 .7 .5 .5 Ti-pct. s .070 .070 .150 .150 .100 .050 . 150 .070 .150 . 100 .070 .100 .050 .150 .150 . 100 .150 . 150 .150 .150 .070 . 100 .100 .150 .200 . 100 .200 .100 .150 .030 .150 .007 .070 .150 .200 .070 .150 .150 .100 .050 .030 .100 .150 . 100 .010 Kn-ppm s >10,000 >10,000 5,000 5,000 7,000 >10,000 2,000 700 3,000 3,000 3,000 3,000 1,500 2,000 7,000 1,500 3,000 3,000 3,000 2,000 1,500 2,000 5,000 3,000 10,000 1,500 3,000 5,000 3,000 3,000 2,000 1,500 1,000 3,000 7,000 >10,000 2,000 3,000 2,000 700 300 3,000 5,000 2,000 2,000 Ag-ppm As-ppm Au-ppm s N 70.0 70 .0 3.0 20 .0 70.0 2,000.0 30.0 70 .0 15.0 50.0 70.0 30.0 20.0 20 .0 7.0 2.0 7.0 10.0 15.0 20.0 30.0 70 .0 500.0 50.0 70 .0 7.0 15.0 15.0 15.0 3.0 300.0 7.0 20.0 15.0 N 20.0 7.0 100.0 1 .5 50.0 50.0 5.0 30.0 20.0 s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 3 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N B-ppm s 50 150 100 300 300 100 500 300 150 300 300 300 200 300 300 300 200 150 300 200 2CO 150 500 500 150 200 200 300 300 300 500 300 500 200 100 150 . 300 200 300 500 300 300 100 150 20 Ra-ppm s 2,000 7,000 700 1,000 1,500 7,000 3CO 300 700 700 300 300 300 300 1,000 500 700 300 700 300 300 700 700 300 1,000 300 300 200 300 500 300 150 300 300 1,500 2,000 700 700 500 200 100 700 700 500 1,500 Be-ppm 2 5 N <2 N <2 <2 N <2 N N <2 N <2 <2 <2 <2 <2 2 <2 N <2 <2 <2 <2 <2 2 N <2 <2 <2 3 <2 <2 <2 3 N 2 <2 <2 N <2 <2 Table 9. Semiquantitative Spectrographic Analyses of oxalic-acid leachates derived from the brornoform-light fraction from the U. S. Virgin Islands.--Continued Sample 8USC076S Bi-ppra Cd-ppm s s to I * CD 84SC078S 8US3079S 8USC080S 84SC081S 84S3083S 84SZ08US 84SC085S 8US3066 8USCOP7 8USC089S 8US3093S 8USC095S 84SCD96S 84SC098 84SC100S 84SC191S 8USC102S 84SC103S 8USC104S 84SC105S 84SC108S 8USC109S 84SC111S 84SC112S 8USC11US 8USC115S 84SC116S 84SC117S 8US3118S 8USC1POS 84SC121S 8US3122S 84SC123S 84SC124S Co-ppm Cr-ppm Cu-ppra La-ppm s 300 700 150 150 150 1,500 100 20 150 100 100 150 50 100 200 50 150 100 100 100 30 100 200 150 300 50 150 200 '100 f. 50 70 50 50 150 150 200 100 100 70 20 20 100 150 100 150 s 200 200 300 500 300 300 500 200 300 200 300 500 200 300 300 200 200 150 300 200 200 200 300 300 300 150 300 300 500 200 300 150 300 300 300 500 300 500 300 100 150 500 200 200 50 s 300 700 500 300 300 700 200 100 700 200 150 150 70 150 200 150 300 500 200 300 70 200 200 150 700 70 300 150 150 70 200 100 100 300 500 500 150 200 200 70 70 200 300 150 150 s N N N N N 200 N N N N N N N N N N N N N N N N N N N N N N N N N <50 N N N <50 N N N N N N N N 70 Ho-ppro s N N N N <10 N N N N <10 10 1 5 N 15 15 10 N N N N N N <10 < 1 0 N N N N N <10 <10 <10 <10 N N N N N N N N N N N N Nb-ppm s N N N N N N V N N N N N V N N N N N N N N N N N N N N N N N N N N N N N V N N N N N N N N Ni-ppm Pb-ppm s 100 300 150 200 200 500 200 70 150 100 100 200 50 150 200 150 150 150 200 200 70 150 150 100 300 70 150 150 150 70 100 30 70 150 200 200 100 150 100 30 70 150 200 100 100 s 150 100 150 30 <20 300 <20 <20 <20 <20 N 20 N <20 <20 <20 <20 20 30 20 N 30 <20 <20 300 100 30 N <20 N <20 <20 N <20 100 200 70 20 N N <20 <20 50 <20 70 Sb-ppra s N N N N N N N N N N N N N N N N N N N N N V N N N M N N N N N N N N N N N N N N N N V N N Sc-ppra s 15 < 10 10 < 10 N 10 N N N N N N N N <10 N N N N N N N N N <10 N N N N N N N N <10 10 <10 N N N N N N <10 N 15 Sn-ppm s N N <20 N 70 N N N N N 70 50 N N N <20 N N 70 200 N 30 30 <20 30 N N <20 <20 N 30 N 70 N N N N N <20 N N 30 N N N ?r-ppm s N 500 700 300 1,000 500 <200 N 700 700 500 500 N 500 500 700 500 <200 500 700 <200 1,000 700 300 500 N N N N N 700 N 700 N 500 1,000 3,000 300 1,000 N N <200 1,000 <200 N Table 9. Semiquantitative Spectrographic Analyses of oxalic-acid leachates derived from the bromoform-light fraction from the U. S. Virgin Islands. Continued to CO Sample eus:o76s 8I4SC077S 8USC078S 8USC079S 8USC080S 8U3C081S 8<4S:082S 8i4S~083S 8USC08I4S 81S3C185S 8I4SC086 8USC087 8I4SC088S eusroeps 8i«SC090S 8I4SC091S 8USC093S 8<4S"094S 8I4SC095S 84SC096S 84SC098 8<4SC100S 8I4SC101S 8USC102S 8USC103S 84SC104S 8USC105S 84SC107S 8I4SC108S 84SC109S 84SC110S 8i4S~111S 84SC112S 8USC113S eusrms 8USC115S 8<4SC116S 8USZ117S 8USC118S 8USC119S 8I4SC120S 84SC121S 84SC122S 84SC123S 8USZ12US V-ppm s 1,000 2,000 1,000 700 300 3,000 500 150 500 300 150 300 100 300 500 300 300 500 50 30 100 300 300 300 700 150 500 500 300 100 300 200 100 500 700 1,000 500 500 200 100 70 300 700 200 300 W-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Y-ppm s 30 K 30 N N 150 N N N N N N N N N K N N N N N N N K N N N NN ' N / N N N N N 50 N N N N N N N N 70 Zn-ppm s 700 1,000 1 ,000 1,000 1,000 500 1,000 500 700 700 700 700 <500 700 700 1,000 700 700 1,000 1,500 500 1,000 700 700 1,500 <500 700 <500 700 ' <500 1,000 N 500 1,000 1,000 500 1,500 500 500 N 500 700 1,500 500 1,000 Zr-ppm s 50 30 30 30 N 50 20 N N N N <20 N N <20 N N <20 N N N N N N 20 <20 20 N <20 <20 20 <20 <20 20 50 70 <20 50 N N N N 30 N N Th-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Table 9. Semiquantitative ^pectrooraphic Analyses of oxalic-acid leachates derived from the bromoform-light fraction from the 0. S. Virgin Islands.--Continued Sample 8USC125S 8USC126S 8I4SC127S 8I4SC12P.S BUST 12QS 84SC130S 84S^131S 8<4S::132S 8USC133S 8<4SC13<4S 8USC135S 814S3136S 84SC137S 8USC138S 814SC139S 84SC1UOS 8l*SC1«*1S 8t*SC1<42S 8US:H43S 8USC1U8 8USC150S 8USC1514 8<4SC156S 814SC200 8USC201 8USC202 814SC203 814SC2014 8USC205 8USC206 8USC207 8USC208 8USC209 8USC210 8USC212 8<4SC213 8<4SC21<4 8<4SC215 8USC216 814SC218 8t*SC219 8t*SC220 814SC221 8USC222 8<4SC223 Latitude 17 142 55 17 <43 9 17 (42 5 17 U3 17 17 U3 UR 17 *42 52 17 *43 2 17 <42 37 17 <43 0 17 *43 25 17 U3 3<4 17 <42 27 17 *41 33 17 141 140 17 **1 55 17 «*1 1*7 17 U1 21 17 <42 16 17 (42 «*t* 17 i*5 38 17 <45 3H 17 *47 26 17 U7 12 17 <45 20 17 *45 31 17 U5 36 17 US 3t* 17 t*5 38 17 U5 18 17 U5 13 17 i*U U8 17 *45 12 17 U5 0 17 1*5 1 17 UU 36 17 14U 17 17 UU 6 17 <4«* 1 17 U5 U1 17 1*5 1 17 t*5 2U 17 U5 5 17 Ut* 56 17 t*U 57 17 «*<* 57 Longtude Fe-pct. Mg-pct. 6t* U6 52 6U U6 27 6<4 *47 17 6U 148 8 6U 148 20 6(4 <48 3 6<4 48 51 6<4 <48 <40 614 U9 18 6«* **9 26 6<4 48 59 6*4 149 15 6<4 148 52 6U 148 23 6(4 U9 7 6*4 U9 31 6*4 149 25 6«* «*9 U3 6*4 «*9 53 6<4 U8 50 6t* U8 13 6U 37 32 6U 37 10 6U 3«* 6 6U 3U 22 6U 3U 31 6<* 3U 39 64 3U <*8 6U 35 1 61* 35 33, ' 6«* 36 25 6U 3U 20 61* 3U 35 6U 3U 53 6t* 36 37 6U 37 7 6U 37 2U 6U 37 38 6«* 39 12 6«* 38 17 6U 37 38 6«* 37 UO 6U 37 33 61* 37 15 6«* 36 «*6 s 10.0 7.0 20.0 10.0 20.0 10.0 15.0 7.0 15.0 10.0 15.0 5.0 5.0 7.0 7.0 10.0 7.0 10.0 10.0 15.0 10.0 7.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 15.0 7.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 15.0 10.0 s 7.0 7.0 2.0 3.0 1.^ 5.0 2.0 5.0 3.0 2.0 3.0 5.0 7.0 7.0 3.0 3.0 5.0 1.5 1.5 5.0 3.0 5.0 7.0 7.0 5.0 5.0 5.0 5.0 3.0 5.0 5.0 5.0 5.0 3.0 5.0 2.0 3.0 3.0 2.0 3.0 1.5 3.0 2.0 2.0 3.0 Ca-pct. s .7 1.0 2.0 .7 2.0 1.5 2.0 .7 .7 .5 .7 1.0 1.0 .7 .5 .7 .7 1.0 1.5 1.0 1.5 2.0 .7 .7 3.0 1.5 2.0 1.5 1.0 1.0 .7 1.0 2.0 1.0 1.5 1.0 1.0 .7 1.5 1.5 1.5 1.5 2.0 .7 1.0 Ti-pct. s . 150 .100 .050 . 100 .070 . 150 .050 .070 .100 .150 .150 .100 . 100 . 150 .150 .100 .100 .070 .070 .300 . 150 .070 .100 .100 .100 .100 .070 .100 .100 .100 .070 .150 .150 .100 .070 .150 .150 .100 .300 .150 .150 .150 .150 .100 . 100 Mn-ppm s 2,000 2,000 >10,000 7,000 >10,000 5,000 >10,000 1,500 10,000 10,000 7,000 3,000 1,500 3,000 10,000 5,000 3,000 >10,000 >10,000 1,500 5,000 >10,000 5,000 7,000 >10,000 10,000 10,000 7,000 10,000 7,000 10,000 10,000 10,000 7,000 10,000 10,000 5,000 5,000 7,000 10,000 >10,000 7,000 10,000 7,000 10,000 Rg-ppm As-ppm Au-ppm P-ppm s 10.0 300.0 <1 .0 7.0 15.0 5 .0 1 .0 100.0 7 .0 7.0 1 .5 70.0 100.0 100.0 70.0 N 2.0 N N 5.0 N 15.0 15.0 N 70.0 N N 70.0 5.0 10.0 30.0 15.0 10.0 20.0 2.0 3.0 <1 .0 N N 20.0 10.0 N 10.0 20.0 15.0 s N N N N N »J N N N N N H N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N S N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N s 300 500 200 200 150 200 230 300 150 100 150 300 300 300 300 300 500 150 150 70 150 200 150 100 150 100 100 150 100 100 70 70 100 70 100 100 70 100 150 100 150 100 150 150 150 Ba-ppm Be-ppm s 200 500 5,000 1,000 3,000 1 ,000 5,000 300 1,OCO 700 700 700 700 700 2,000 1,000 500 2,000 2,000 700 200 1,000 700 700 1,500 700 700 500 1,000 700 700 7no 1,000 500 1,000 1,500 700 700 1,000 1,000 2,000 700 1,000 1,000 1,000 s N <2 <2 <2 2 <2 2 <2 <2 <2 <2 N N <2 N <2 <2 5 2 N <2 <2 2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 3 2 <2 5 <2 3 ? 5 3 <2 Table 9. Semiguantitative Fpectrooraphic Analyses of oxalic-acid leachates derived from the bromoform-lioht fraction from the U. S. Virgin Islands. Continued Sample 8USC125S 8USC126S 84SC127S 84SC12PS 8«4S~129S 8U^C130S 84SC131S 6USC132S P4S2133S 845^13^5 84SZ135S 845C136S 84SC137S 84SC138S 84SC13QS eusciaos 84SC1H1S 8USC1U2S 84SC143S 8USC1U8 84SC150S 84SC15U 84SC156S 845C200 8USC201 8453202 84SC203 84SC204 8USC20 1; 8US:206 8USC207 8USC208 84S3209 8USC210 8USC212 8USC213 8USC21« 84SC215 84SC216 8USC218 8USC21Q 8USC220 8USC221 8USC222 8USC223 Bi-ppm s N H N N N N N N N N N N N N N N N H N N N N N N N N N N H N N N N N N N N N N N N N N N N Cd-ppm s N H N N N N N N N N N N N N N N N N N N N H N N N N N N N N N N N N N N N N N W N N N N N Co-ppm Cr-ppm s 100 100 1,000 150 1 ,000 150 1,500 100 150 300 200 100 50 100 200 150 100 300 300 150 200 300 200 200 500 200 300 150 '150 ',150 200 150 300 200 300 300 150 150 300 500 500 150 300 150 300 s 200 300 200 200 200 300 200 200 200 200 200 200 200 200 200 150 200 100 100 150 200 500 500 500 200 300 500 300 300 300 300 300 500 300 200 300 200 100 500 300 500 300 500 500 500 Cu-ppm La-ppffl s 300 150 1,000 300 700 500 700 150 300 200 500 200 300 300 300 200 150 300 200 1,500 300 500 500 700 500 500 700 300 300 300 300 300 500 300 300 300 500 300 500 700 300 500 500 300 500 s N N N N 70 N N N N N N N N N N N N N N N N N N N N N N N <50 N N N N N N N N N N N 50 N N <50 N Mo-ppm s N <10 N N N N N N N N N <10 10 N N N N N N N N N N N N N N N N N N N <10 N N N N N N N N N N N N Nb-ppm s N N N N N N N N N N N N N N N N N N N N N N N N H N N N N N N N N N N N N N N N N N N N N Ni-ppm Pb-ppm Sb-ppm Sc-ppm s 100 150 500 200 300 2CO 500 100 200 100 200 150 200 200 200 100 100 150 100 200 150 500 300 300 500 500 500 300 300 300 500 300 500 300 300 300 200 100 500 300 500 300 500 500 500 s 20 <20 150 20 300 50 70 20 30 200 100 N 30 3D <20 <20 <20 70 100 20 70 150 50 30 200 70 100 100 150 100 150 100 70 150 150 150 100 100 70 100 200 100 150 150 100 s N N N N V N N M N N N N N N N N N N N N N N N N N N N N M N N N N N N N N N N N N N N N N s N N 10 N 10 H N <10 N 10 <10 N N N N N N N <10 <10 <10 N <10 <10 10 15 <10 15 10 20 <10 15 10 15 10 10 10 10 N 15 <10 15 15 10 10 Sn-ppm s N 100 N <20 30 50 N N N N N N 70 100 50 N N N H N N H N N N N N N N N H H N N N N N N N N N N H N N Sr-ppm s 300 <200 500 500 200 700 700 300 500 N 700 300 2,000 1,500 700 700 1,000 700 1,000 300 <200 1,000 300 500 500 N <200 <200 N N N N 700 N 200 300 N N 1,500 200 200 <200 300 N N Table 9. Semiquantitative Spectrooraphic Analyses of oxalic-acid leachates derived from the bronoforal-light fraction from the U. S. Virgin Islands. Continued Sample 8USC125S 8<4SC126S 8USC127S 8UF5C128S 8I4SC129S 8^»SC130S 8USC131S 8USC132S 8US:133S 8I4SC13I4S 8USC135S 8USC136S 8USC137S 8USC138S 8USC139S suscmos 8USC1U1S 8USC1U2S 8USC1U3S 8USC1U8 8USC150S 8USC15U 8USC156S 8USC200 8USC201 8USC202 8USC203 susc:2oa 8aSC205 8USC206 8USC207 8USC208 8US3209 8USC210 8USC212 81SC213 84S3211 8USC215 81SC216 8USC218 8USC219 8aSC220 8USC221 8USC222 8US3223 V-ppm 53 300 200 5,000 500 3,000 soo 2,000 200 SOO 700 700 200 200 500 1,000 700 300 1,000 1,500 500 700 300 300 500 500 500 200 500 500 500 500 500 500 500 500 500 500 700 700 700 500 700 500 700 500 W-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Y-ppm s N N N N 150 N N N N 30 N N N N N N N N N N N <20 N N 20 <20 <20 30 30 ' 30 / , 30 30 <20 50 30 50 <20 30 N <20 50 30 20 50 30 Zn-ppa s 1,500 500 700 1,000 700 1,000 500 700 700 700 1,500 700 1,000 2,000 1,000 700 700 700 700 1,000 500 500 1,000 700 700 500 1,000 700 1,000 ' 1,000 700 1,000 1,000 700 1,000 700 700 700 1,000 700 700 700 700 700 700 Zr-ppm s V N 70 N 20 <20 50 20 30 50 20 N N N <20 N N 30 30 N 50 20 20 N 30 30 20 20 30 N N <20 50 50 20 30 N 30 20 20 50 50 30 20 20 Th-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Table 9. Semiquantitative Spectrographic Analyses of oxalic-acid leachates derived from the bromoform-light fraction from the U. S. Virgin Islands. Continued to to Sample 8/4SC22U R4SC225 8f4SC226 84FC227 84SC228 845:229 R4SC230S 84SC231 84SC232S 8USC233 84SC234 84SC235 B4SC236 814SC239 84SC240 B4SC240 B4SC24CS 84SC240S 84SC:241 84SC242 84SC243 B4SC244 B4SC245 84SC246 B4SC247 84SC248 84SC249 84SC250 8USC251 84SC251S 84SC252 fl4S:T253 84SC254 84SC255 84SC256 84SC257 B4SC25B 84SC259S 84SC260S B4SC261S B4SC262S 8USC263 814SC26US 84SC264S 84SC267S Latitude 17 45 14 17 44 33 17 44 13 17 44 20 17 44 6 17 44 10 17 43 39 17 44 12 17 44 26 17 44 50 17 44 48 17 45 3 17 45 6 17 43 59 17 44 5 17 44 5 17 44 5 17 44 5 17 43 10 17 43 13 17 43 22 17 43 8 17 43 46 17 44 37 17 44 30 17 44 34 17 45 31 17 44 47 17 44 26 17 44 26 17 44 28 17 4U 43 17 44 27 17 44 17 17 43 54 17 43 25 17 43 30 17 42 38 17 46 58 17 46 24 17 46 34 17 46 9 17 46 16 17 46 13 17 41 19 Longtude Fe-pct . Hg-pct. 64 36 23 64 38 59 64 38 39 64 36 56 64 36 39 64 38 0 64 38 43 64 39 3 64 39 33 64 38 53 64 38 51 64 39 3 64 40 4 64 41 30 64 41 17 64 41 19 64 41 17 64 41 19 64 41 27 64 40 42 64 41 42 64 41 14 64 40 10 64 40 29 64 40 53 6U 40 47 64 40 19 64 41 22 64 41 39 64 41 39 64 41 47 64 42 2 64 42 4 64 42 37 64 42 19 64 42 4 64 42 13 64 42 14 64 45 0 6U 45 1 64 45 4 64 44 59 64 44 25 64 44 22 64 52 49 s 15.0 10.0 10.0 10.0 10.0 7.0 10.0 10.0 10.0 10.0 10.0 10.0 7.0 10.0 10.0 10.0 7.0 7.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 7.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 15.0 15.0 10.0 10.0 10.0 10.0 10.0 10.0 7.0 s 2.0 3.0 3.0 3.0 3.0 2.0 2.0 5.0 3.0 3.0 3.0 3.0 3.0 5.0 5.0 5.0 5.0 5.0 3.0 5.0 3.0 3.0 3.0 3.0 3.0 5.0 2.0 2.0 3.0 5.0 5.0 3.0 5.0 5.0 5.0 5.0 5.0 1.5 3.0 5.0 5.0 3.0 5.0 5.0 5.0 Ca-pct. s .7 1.5 1.0 1.0 1.0 1.* .7 1.0 1.0 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.0 1.0 1.5 1.5 1.5 1.5 1.0 1.5 1.0 1.5 1.5 .7 1.0 .7 1.5 2.0 2.0 1.5 2.0 1.5 1.5 .3 .5 1.0 .7 1.5 1.0 1.0 .5 Ti-pct. s .100 .150 . 100 .100 .150 . 150 .100 .150 .200 .150 .150 . 100 .150 .150 .200 .200 .100 .100 .200 .200 .150 .100 .200 .300 .200 .200 .150 .200 .200 .150 .200 .100 .200 .150 .150 .150 . 150 .100 .005 .100 .150 .150 .100 .100 .070 Mn-ppm s 10,000 10,000 5,000 7,000 7,000 10,000 7,000 5,000 10,000 >10,000 10,000 >10,000 10,000 5,000 >10,000 >10,000 7,000 7,000 3,000 5,000 10,000 7,000 10,000 2,000 5,000 10,000 >10,000 10,000 5,000 >10,000 10,000 10,000 7,000 3,000 10,000 7,000 10,000 7,000 5,000 3,000 7,000 5,000 10,000 10,000 10,000 Ag-ppm As-ppm Au-ppm B-ppm s <1 .0 7.0 10.0 7.0 15.0 50.0 15.0 70.0 N 100 .0 3.0 N 15.0 15.0 N N 30.0 30.0 2.0 N 7.0 10.0 20.0 <1 .0 7.0 20.0 N 15.0 N N 5.0 15.0 <1 .0 3.0 N 7.0 <1 .0 N 10.0 100.0 20.0 5.0 15.0 15.0 70.0 s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N s N N N N N K N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N s 150 100 70 70 70 150 100 100 150 100 150 70 70 100 100 100 150 150 150 70 70 70 70 200 50 70 100 150 70 5D 70 70 70 50 100 100 100 70 50 150 70 150 50 50 150 Ba-ppm Be-ppm s 1,000 1,000 500 700 150 1,000 700 700 1,000 2,000 1 ,000 1,000 1,000 700 1,000 1,000 500 500 700 700 1,500 1,000 1 ,000 1,000 1,000 1,000 2,000 1,000 700 2,000 1,000 1,500 700 500 1,000 1,500 1,500 1,000 300 300 700 700 500 500 700 s <2 <2 <2 2 <2 2 <? <2 <2 <2 2 <2 <2 2 3 3 N N 5 3 3 3 5 3 5 7 5 5 2 2 2 3 3 <2 2 5 5 7 N <2 <2 <2 <2 <2 N Table 9. Semiguantitative Spectrographic Analyses of oxalic-acid leachates derived from the bronaform-liaht fraction from the 0. S. Virgin Islands.--Continued Sample 8USZ22H 8«S"225 8«SC226 8US3227 8USC230S 8USC231 8URC232S 8USC233 8US323U 8«SC235 8USC236 8USC239 8USC2UOS 8USC2U1 8U5C2U2 8U5C243 8USC2UU 8USC2U5 8USC2U6 8USC247 8USC2U8 8USC249 8USC250 8USC251 8USC251S 8USC253 8USC25U 8USC255 8«SC256 8USC257 8USC258 8USC259S 8USC260S 8USC261S 8«5C262S BUSC263 8USC26US 8USC267S Bi-ppm s N N N N N N N N N N N N N N N N 30 30 N N N N N N N N N N N N N N N N N N N N N N N N N N N Cd-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N R N N N N N N N N N N Co-ppm s 500 300 150 200 150 500 200 200 500 300 200 500 500 200 300 300 200 200 150 150 200 150 200 150 150 300 1,500 200 150 £t>0 200 300 200 150 200 150 200 150 100 150 150 150 150 150 200 Cr-ppm Cu-ppm La-ppai s 500 200 150 150 70 200 300 300 1,000 300 300 500 700 100 300 300 100 100 500 300 300 200 500 700 200 700 2,000 100 150 100 200 150 100 150 150 200 200 150 70 300 70 200 150 150 300 s 500 500 700 300 500 500 500 700 500 500 500 700 500 500 500 500 500 500 500 500 500 300 500 700 500 500 200 300 500 500 500 500 500 500 500 500 500 300 300 500 300 500 500 500 100 s N N N N N N N N N N N N <50 N N N N N N <50 N N 50 N 50 50 N 70 N <50 N 50 N N N 70 N N H N N N N N N Ho-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Nb-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Ni-ppm s 50 300 300 300 50 300 300 300 500 500 300 700 700 150 500 500 100 100 300 300 300 200 500 500 300 700 1,000 150 200 150 200 150 100 70 200 200 300 150 30 200 50 200 70 70 200 ppm 200 100 100 150 70 100 100 70 150 50 100 70 300 70 150 150 50 50 70 V100 100 100 100 70 70 150 300 100 30 70 70 200 200 <20 150 150 150 150 <20 <20 70 50 100 100 <20 Sb-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Sc-ppm s 10 10 10 15 15 10 <10 15 10 <10 10 <10 <10 <10 10 10 15 15 15 20 10 15 15 15 15 15 <10 10 10 <10 10 10 10 10 15 20 20 15 <10 N 20 10 15 15 N Sn-ppm Sr-ppm s s N N N 200 N <200 N N N 300 200 200 N <200 N N N N <200 N <200 N N N N <200 300 N N <200 N 500 300 N N N 300 N N 700 N N N N 700 Table 9. Semiguantitative Spectrooraphic Analyses of oxalic-acid leachates derived from the bromoform-light fraction from the 0. S. Virgin Islands. Continued Sample 8«*s:22«* 8USC225 80SC226 8USC227 8USC228 8US:229 8US3230S 8USC231 8US~232S 8HSC233 BI4SC23U 8USC235 8USC23fi 8US~239 8USC2UO 8USC2UO 81S32UOS 8US32UOS 8USC211 84SC212 8USC2U3 8USC21U 8USC215 8US3216 8USC2U7 8US:2t48 8USC219 8USCI250 8USC251 8USC251S 8USC252 8USC253 8USC25U 8USC255 8USC256 8USC257 8USC258 8USC259S 81SC260S 8USC261S 8USC262S 8USC263 8USC26US 8USC26aS 8USC267S V-ppm s 700 700 300 500 500 500 500 700 700 500 500 500 500 500 500 500 500 500 700 500 500 500 700 700 500 500 1,000 700 300 500 500 700 700 500 700 700 700 1,000 300 500 300 300 500 500 200 W-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Y-ppm s 50 <20 <20 30 30 30 30 N 20 N N N 30 N <20 <20 <20 <20 30 70 50 50 70 20 50 50 30 50N' 30 r N 50 20 20 30 70 50 20 N N 50 N 20 20 N Zn-ppm s 700 700 700 700 700 700 500 500 700 700 700 700 700 700 700 700 500 500 700 1,000 500 700 700 1,000 700 700 700 700 700 700 700 1,000 1,000 500 700 500 500 <500 700 700 700 700 500 500 500 Zr-ppm s 30 <20 N <20 50 50 <20 N N 50 20 20 <20 30 30 30 20 20 50 30 70 50 70 30 30 30 <20 50 <20 30 50 50 50 20 70 70 70 70 N N 30 30 50 50 N Th-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Table 9. Semiquantitative Spectrographic Analyses of oxalic-acii leachates derived from the bromoform-light fraction from the U. S. Virgin Islands. Continued to ro Sample 8USC268S 84532695 84S3270S 84SC271S 84SC272S 84SC:274S 84SC275S 8MS3276S 84SC277S 8aSC278S 84SC279S 84S3280S 84SC281S 84SC282S 84SC283S 84SC284S 84SC285S 84SC286S 84SC287S 84SC288S 84SC289S 84SC29DS 84SC291S 84SC293S 84SC294S 8US3295S 8USC297S 84SC298S 84SC299 84SC300 Latitude 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 U1 29 «M 30 41 33 41 38 42 6 i*1 33 42 8 U2 0 41 52 42 13 U2 30 1*2 35 1*1 34 41 53 42 30 «*2 38 1*5 23 (*(« 2(« U3 12 43 26 1*3 38 43 1*1 43 49 44 26 44 39 44 32 44 8 44 10 45 45 45 42 Longtude Fe-pct. 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 52 51 50 51 50 50 51 52 52 51 51 50 49 49 49 50 41 40 41 41 41 41 41 41 41 41 41 41 51 50 14 47 53 22 37 25 5 20 43 46 9 40 27 47 47 13 35 13 40 44 42 36 30 31 46 47 40 52 2 41 ' S 7.0 7.0 15.0 10.0 10.0 10.0 10.0 7.0 7.0 10.0 15.0 10.0 5.0 20.0 10.0 10.0 15.0 7.0 15.0 7.0 7.0 10.0 10.0 15.0 15.0 10.0 10.0 10.0 10.0 15.0 Mg-pct . s 5.0 2.0 1.0 3.0 1.5 1.5 3.0 3.0 5.0 5.0 2.0 5.0 7.0 2.0 2.0 3.0 1.5 3.0 1.5 2.0 3.0 3.0 3.0 2.0 3.0 5.0 5.0 3.0 5.0 5.0 Ca-pct . s .5 2.0 .7 1.0 1.0 2.0 2.0 .3 .7 1.0 3.0 .7 .7 1.5 1.5 1.5 .7 1.5 .7 1.0 1.5 1.5 1.0 1.5 1.0 1.0 1.5 1.5 1.0 1.5 Ti-pct. s .070 .100 .030 .150 .030 .050 .150 .070 .100 .150 .100 .100 .050 .100 .100 .150 .070 .070 .070 .070 .070 .150 .100 .150 .200 .200 .200 .100 .150 .150 Mn-ppm s 3,000 >10,000 >10,000 >10,000 >10,000 >10,000 >10,000 2,000 3,000 3,000 >10,000 5,000 3,000 >10,000 >10,000 10,000 5,000 >10,000 7,000 >10,000 - >10,000 10,000 7,000 >10,000 >10,000 10,000 >10,000 >10,000 7,000 5,000 Ag-ppm As-ppm Au-ppm s 100.0 15.0 <1.0 5.0 N N N 20.0 150.0 10.0 70.0 20.0 15.0 50.0 7.0 N 10.0 15.0 5.0 N <1 .0 <1.0 7 .0 N N N N 15.0 N <1.0 s N N N N N N N N N N N N N N N N N N N N N N * N N N N N N N 5 N N N N N K K N N N N N N N N N N N K N N N N N K N K N K N B-ppm s 500 300 70 150 150 200 150 300 300 300 100 150 300 150 150 70 150 100 150 150 150 70 100 100 100 100 150 200 30 50 Ba 2 3 3 5 7 3 1 7 2 3 5 1 1 1 1 1 2 2 1 1 -ppm Be-ppm s 500 ,000 ,000 ,000 ,000 ,000 ,000 300 700 ,000 ,000 ,000 700 ,000 ,000 ,500 700 ,000 700 ,500 ,500 ,000 700 ,000 ,000 700 ,500 ,500 300 500 s <2 5 5 5 5 5 5 <2 2 3 5 <2 N 3 5 <2 5 2 7 5 2 <2 <2 5 3 3 5 5 N N Table 9. Seaiiguantitative Spectrographic Analyses of oxalic-acid leachates derived from the bronoforsi-1 ight fraction from the 0. S. Virgin Islands.--Continued DO to CO San pie 8USC268S 84SC269S 8USC270S 8USC271S 8USC272S 8USC27US 84?C275S 8USC276S 84SC277S 84SC278S 8«S::279S 8USC280S 8USC281S 84SC282S 8USC283S 8USC28US 8aSC285S 84SC286S 84SC287S 8USC288S 84SC289S 84SC290S 84SC291S 8«4SC293S 8«4SZ29US 8USC295S 8USC297S 84SC298S 84SC299 8USC300 Bi-ppsi s K N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Cd-ppai s N N N N N N N N N N N N K N N N N N N N N N N N N N N N N N Co-ppm s 100 300 500 300 700 1,000 300 50 150 150 700 150 70 500 500 200 300 700 200 500 300 300 200 500 700 200 300 500 '200 r150 Cr-ppm s 300 700 300 300 150 100 200 150 200 200 200 300 200 200 500 200 2,000 300 200 300 150 300 300 100 70 70 300 300 70 100 Cu-ppm La-ppsi s 150 300 300 300 500 700 300 100 150 150 500 300 100 500 300 500 300 500 150 300 300 300 300 300 300 700 300 500 300 500 s N N 70 N N N N N N N N N N N N N N N <50 70 N N N <50 N N N <50 N N Ho-ppm s N N N N K <10 N N K N N N N N N N N N N N N N N N N N N N N N Nb-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Ni-ppsi s 100 300 200 150 200 300 200 70 100 100 300 100 70 150 200 100 500 700 100 300 300 200 300 150 150 100 300 500 100 100 Pb-ppsi Sb-ppsi Sc-ppm s <20 70 200 50 50 150 150 N N <20 150 <20 <20 70 70 100 200 150 300 200 150 100 70 200 200 100 100 100 50 70 s N N M N N N N N N N N N N N N N N N N N N N N N N N N N N N S K <10 15 N N 10 10 N N N <10 N N N N 10 15 <10 10 15 <10 15 <10 10 10 10 10 <10 15 10 Sn-ppsi s N N N N N N N N K N K N K N N N N N N N N N N N N N N N N N Sr-ppm s 500 500 N 700 1,000 500 500 500 700 700 700 300 700 1,000 500 300 N N 200 200 N N N 200 N N <200 <200 N N Table 9. Semiquantitative Spectrographic Analfses of oxalic-acid leachates derived from the bronof ona-light fraction from the U. S. Virgin Islands. Continued ro ro CO Sample 8USC268S 8USC269S 8USC270S 8USC:271S 8USC272S 8USC27US 8USC275S 8USC275S 8USC277S 8USC278S 8USC279S 8USC280S 8USC281S 8USC282S 8USC283S 8USC28US 8USC285S 8USC286S 8*«SC287S 8USC288S 8USC289S 84SC290S 8USC291S 8USC293S 8USC29US 8USC295S 8USC:297S 8I4SC298S 84SC299 84SC300 V-ppm s 200 700 1,500 1,000 1,500 1,500 1,000 200 200 700 2,000 700 150 1,500 1,500 700 700 500 700 500 300 700 500 1,000 700 700 500 3,000 500 700 W-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Y-ppm s N <20 150 N N <20 <20 N N N 20 N N N N N 50 <20 100 70 50 30 N 50 30 30 50 100 30 ' N / Zn-ppm s <500 700 N 1,000 <500 <500 <500 N <500 <500 700 <500 N 500 N 700 700 700 700 700 500 700 <500 700 700 1,000 500 700 700 500 Zr-ppi s 20 100 70 N 20 70 70 N <20 <20 70 N N 50 70 50 20 <20 70 50 30 70 20 70 70 30 70 50 <20 <20