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SAMPLE INFO : 94SJP90
Sample ID:94SJP90
Station ID:94SJP90
Latitude:62.38739453
Longitude:-143.4079678
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, holocrystalline, porphyritic with a matrix of cryptocrystalline material, opaque, feldspar, minor alteration and a high relief mineral. Plagioclase phenocrysts are up to 2.62 mm and some have sieve textured zones, strong normal or oscillatory zoning, and are frequently rounded. Clinopyroxene phenocrysts are up to 1.25 mm. Opaque phenocrysts are up to 0.35 mm. 99.0% matrix, 0.8% plagioclase, 0.1% opaque, 0.1% 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
94SJP9062.38739453-143.4079678Preece, 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, holocrystalline, porphyritic with a matrix of cryptocrystalline material, opaque, feldspar, minor alteration and a high relief mineral. Plagioclase phenocrysts are up to 2.62 mm and some have sieve textured zones, strong normal or oscillatory zoning, and are frequently rounded. Clinopyroxene phenocrysts are up to 1.25 mm. Opaque phenocrysts are up to 0.35 mm. 99.0% matrix, 0.8% plagioclase, 0.1% opaque, 0.1% alteration.94SJP90LavaWhole-rock 72.2 0.37 14 2.66 0.12 0.23 0.61 6.1 3.5 0.11 100.0655DCP2.952.66LOI=0.06DCP 66 988 38 36 80.1 38.7 8.2 2 7.7 8.3 5.2 5.8 0.9 47 600 18.8 8.9 1.4 9.7 7bdl 1 2 90 20.3 55XRF: Rb, Zr, Nb, Th, U, Ni, Ga; DCP: Ba, La, Ce, Nd, Sm, Eu, Gd, Dy, Er, Yb, Lu, Sc, V; MX: Sr, Y, Cu, Zn;

SAMPLE LOCATION

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