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SAMPLE INFO : 94SJP122B
Sample ID:94SJP122B
Station ID:94SJP122B
Latitude:62.23626605
Longitude:-143.4610192
Datum:NAD83
Date Sampled:1994-00-00
Sample Type 1:Lava
Sample Type 2:Dome
Field Lithology:Rhyolite
 Text Description:
Rubbly outcrop of platy and blocky pieces of a dome at Site 15. Fine grained, vesicular, holocrystalline, porphyritic with a matrix of cryptocrystalline material, opaque, plagioclase and minor alteration. Plagioclase phenocrysts are up to 3.0 mm and occasionally have sieve textured zones, oscillatory zoning, and/or resorption embayments. Orthopyroxene phenocrysts are up to 0.3 mm. Opaque phenocrysts are up to 0.12 mm. One granular opaque mass may represent a dehydrated phase. 97.9% matrix, 0.8% plagioclase, 0.1% altered phase, 1.2% vesicles.

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
94SJP122B62.23626605-143.4610192Preece, S. J.1994-00-00 Skookum CreekNabesna A-5; T5N, R11E, S7Rubbly outcrop of platy and blocky pieces of a dome at Site 15. Fine grained, vesicular, holocrystalline, porphyritic with a matrix of cryptocrystalline material, opaque, plagioclase and minor alteration. Plagioclase phenocrysts are up to 3.0 mm and occasionally have sieve textured zones, oscillatory zoning, and/or resorption embayments. Orthopyroxene phenocrysts are up to 0.3 mm. Opaque phenocrysts are up to 0.12 mm. One granular opaque mass may represent a dehydrated phase. 97.9% matrix, 0.8% plagioclase, 0.1% altered phase, 1.2% vesicles.94SJP122BLavaWhole-rock 72.4 0.17 15.9 1.48 0.07 0.52 2 5.2 2.03 0.04 99.8455DCP1.641.48LOI=0.13DCP 38 755 314 7 121 6.1 4 2.2 0.6 2bdl bdl 2 53 15.1 55XRF: Rb, Zr, Nb, Th, U, Ga; DCP: Ba, Sc, V; MX: Sr, Y, Cu, Zn;

SAMPLE LOCATION

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