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SAMPLE INFO : 94SJP122C
Sample ID:94SJP122C
Station ID:94SJP122C
Latitude:62.2371
Longitude:-143.4635194
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 from a dome at Site 15. Fine grained, holocrystalline, porphyritic with a matrix of cryptocrystalline material, opaque, plagioclase and orthopyroxene. Plagioclase phenocrysts are up to 0.95 mm and occasionally have oscillatory zoning or resorbed edges. Orthopyroxene phenocrysts are up to 0.9 mm. Opaque phenocrysts are up to 0.2 mm. A dehydrated phase, consisting of fine opaque with a birefringent core, is present. 97.9% matrix, 1.7% plagioclase, 0.2% orthopyroxene, 0.2% opaque.

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
94SJP122C62.2371-143.4635194Preece, S. J.1994-00-00 Skookum CreekNabesna A-5; T5N, R10E, S1Rubbly outcrop of platy and blocky pieces from a dome at Site 15. Fine grained, holocrystalline, porphyritic with a matrix of cryptocrystalline material, opaque, plagioclase and orthopyroxene. Plagioclase phenocrysts are up to 0.95 mm and occasionally have oscillatory zoning or resorbed edges. Orthopyroxene phenocrysts are up to 0.9 mm. Opaque phenocrysts are up to 0.2 mm. A dehydrated phase, consisting of fine opaque with a birefringent core, is present. 97.9% matrix, 1.7% plagioclase, 0.2% orthopyroxene, 0.2% opaque.94SJP122CLavaWhole-rock 72.16 0.18 15.77 1.58 0.06 0.51 2.02 5.2 1.98 0.21 99.555DCP1.741.58LOI=0.32DCP 37 777 316 8 129 6.4 4.2 1.6 1 5bdl bdl 6 46 14.4 55XRF: Rb, Zr, Nb, Th, U, Ga; DCP: Ba, Sc, V; MX: Sr, Y, Cu, Zn;

SAMPLE LOCATION

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