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SAMPLE INFO : 94SJP91
Sample ID:94SJP91
Station ID:94SJP91
Latitude:62.38406109
Longitude:-143.404912
Datum:NAD83
Date Sampled:1994-00-00
Sample Type 1:Lava
Sample Type 2:Flow
Field Lithology:Rhyolite
Text Description:
Sample is from a rubbly flow outcrop on the south-west end of Tanada Lake. Fine grained, vesicular, holocrystalline, glomeroporphyritic with a matrix of cryptocrystalline material, plagioclase, opaque and a high relief mineral. Plagioclase phenocrysts are up to 3.37 mm and frequently have rounded edges, oscillatory zoning, and/or normal zoning. Opaque pseudomorphs after clinopyroxene? are up to 1.75 mm. Clinopyroxene phenocrysts are up to 0.1 mm. Opaque phenocrysts (not pseudomorphs) are up to 0.25 mm. 96.5% matrix, 3.3% plagioclase, 0.2% alteration.

References:
Geochemical variation in the less than 5 Ma Wrangell Volcanic Field, Alaska, with an emphasis on the Skookum Creek volcanic complex

GEOCHEM DATA
StationIDLatitudeLongitudeGeologistDateVisitedAge InfoVolcanoEruptionLocation DescriptionText DescriptionSample IDSample Type 1Sample Type 2Final UnitMaterialSiO2TiO2Al2O3FeOTMnOMgOCaONa2OK2OP2O5Total-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
94SJP9162.38406109-143.404912Preece, S. J.1994-00-00 Skookum CreekNabesna B-5; T7N, R11E, S17Sample is from a rubbly flow outcrop on the south-west end of Tanada Lake. Fine grained, vesicular, holocrystalline, glomeroporphyritic with a matrix of cryptocrystalline material, plagioclase, opaque and a high relief mineral. Plagioclase phenocrysts are up to 3.37 mm and frequently have rounded edges, oscillatory zoning, and/or normal zoning. Opaque pseudomorphs after clinopyroxene? are up to 1.75 mm. Clinopyroxene phenocrysts are up to 0.1 mm. Opaque phenocrysts (not pseudomorphs) are up to 0.25 mm. 96.5% matrix, 3.3% plagioclase, 0.2% alteration.94SJP91LavaWhole-rock 71.92 0.37 14.05 2.65 0.12 0.23 0.66 6.16 3.5 0.17 100.7855DCP2.962.65LOI=0.16DCP 65 1032 39 65 587 19.1 9.4 3 11.2 7 1 1 2 84 20.4 55XRF: Rb, Zr, Nb, Th, U, Ni, Ga; DCP: Ba, Sc, V; MX: Sr, Y, Cr, Cu, Zn;

SAMPLE LOCATION

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