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SAMPLE INFO : 1
Sample ID:1
Station ID:1
Latitude:51.9531
Longitude:178.5356
Datum:NAD83
Sample Type 1:Lava
Field Lithology:Basalt
Text Description:
Basalt from Williwaw Cove formation. Color: light reddish gray (5R 6/l). Texture: holocrystalline, porphyritic, with large, diameter 15 mm phenocrysts of greenish black augite (5 GY 2/1). Plagioclase phenocrysts, 10-15 percent, range from An45 to An65 in individual and separate crystals and average An57. Augite (nZ: 1.705, nX : 1.676) occurs as remarkably inclusion-free megaphenocrysts and as groundmass dust, making 40 to 45 percent of the rock. Subhedral olivine, 2 percent, and magnetite-ilmenite, 1 percent, are accessory minerals. The groundmass is a microcrystalline aggregate of all the above minerals.

References:
Geology of Little Sitkin Island, Alaska

GEOCHEM DATA
StationIDLatitudeLongitudeGeologistDateVisitedVolcanoLocation DescriptionText DescriptionSample IDSiO2TiO2Al2O3FeOTMnOMgOCaONa2OK2OP2O5Total-majorsREF majorsMETH majorsFe2O3/Fe203T origFeO/FeOT origVolatiles csvMETH volatilesCsRbBaSrLaCePrNdSmEuGdTbDyHoErTmYbLuYZrNbHfTaPbThUScVCrFeCoNiCuZnGaMoAsNaKRef trace1METH trace1RbBaSrLaCeNdSmEuGdDyErYbLuYZrNbPbThUScTiVCrNiCuZnGaRef trace2METH trace2Light csvHalogen csvother major csvother lile csvother ree csvother hfse csvother hpe csvother tm csvother misc csv
1 51.9531 178.5356 Snyder, G. L. Little SitkinWilliwaw Cove formation on southeast coast 1 mile southwest of Pratt PointBasalt from Williwaw Cove formation. Color: light reddish gray (5R 6/l). Texture: holocrystalline, porphyritic, with large, diameter 15 mm phenocrysts of greenish black augite (5 GY 2/1). Plagioclase phenocrysts, 10-15 percent, range from An45 to An65 in individual and separate crystals and average An57. Augite (nZ: 1.705, nX : 1.676) occurs as remarkably inclusion-free megaphenocrysts and as groundmass dust, making 40 to 45 percent of the rock. Subhedral olivine, 2 percent, and magnetite-ilmenite, 1 percent, are accessory minerals. The groundmass is a microcrystalline aggregate of all the above minerals.1 52.719112687553 0.56977425543999 11.985251443378 8.4262815072668 0.16993267267509 11.015635605173 12.485053421834 1.7792950433038 0.63974653242385 0.10995643526035 100.23424NN1.96.72H2OM=0.01; H2OP=0.09; CO2=0NN 0.24 8.26 165 339 4.46 10.3 1.53 7.1 1.94 0.65 2.11 0.36 2.15 0.47 1.37 1.27 0.19 13 44.2 1.4 1.21 0.09 2.32 0.96 0.41 52.4 263 460 42 89 2013ICPMS 8.4 182 359.3 3.6 10.1 7.3 13.8 46.3 1.6 2.4 1.3 50.9 265.8 436.6 84.5 34.3 67.3 14.74503XRFB V=8.4, M=PGNAA, R=2013;Be V=0.37, M=DCP, R=2013;Li V=6.64, M=ICPMS, R=2013;K V=0.53, M=NN, R=745;Yb V=0.0003, M=SPEC, R=424;Y V=0.003, M=SPEC, R=424;Zr V=0.008, M=SPEC, R=424;Ni V=0.02, M=SPEC, R=424;Co V=0.005, M=SPEC, R=424;Cr V=0.07, M=SPEC, R=424;Cu V=0.02, M=SPEC, R=424;V V=0.03, M=SPEC, R=424;Ga V=0.0008, M=SPEC, R=424;Sc V=0.006, M=SPEC, R=424;
1 51.9531 178.5356 Snyder, G. L. Little SitkinWilliwaw Cove formation on southeast coast 1 mile southwest of Pratt PointBasalt from Williwaw Cove formation. Color: light reddish gray (5R 6/l). Texture: holocrystalline, porphyritic, with large, diameter 15 mm phenocrysts of greenish black augite (5 GY 2/1). Plagioclase phenocrysts, 10-15 percent, range from An45 to An65 in individual and separate crystals and average An57. Augite (nZ: 1.705, nX : 1.676) occurs as remarkably inclusion-free megaphenocrysts and as groundmass dust, making 40 to 45 percent of the rock. Subhedral olivine, 2 percent, and magnetite-ilmenite, 1 percent, are accessory minerals. The groundmass is a microcrystalline aggregate of all the above minerals.1 H2OM=0.01; H2OP=0.09; CO2=0NN 9.2 315 90.6 745XRFB V=0.001, M=SPEC, R=424;Ba V=0.03, M=SPEC, R=424;Sr V=0.1, M=SPEC, R=424;

SAMPLE LOCATION

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