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SAMPLE INFO : 94SJP42A
Sample ID:94SJP42A
Station ID:94SJP42A
Latitude:62.43407107
Longitude:-143.1810236
Datum:NAD83
Date Sampled:1994-00-00
Sample Type 1:Lava
Sample Type 2:Flow
Field Lithology:Andesite
 Text Description:
Approximately 15’ thick flow overlying 94SJP42B at Site 6. Fine-grained, hypocrystalline, intersertal, porphyritic with a matrix of brown glass, mesostasis, opaque and plagioclase. There is a dark patch that may represent a resorbed inclusion. Plagioclase phenocrysts (An44 - An55) occur in two size populations: 0.7-0.65 mm is less common and displays sieve textured zones and zoning; 0.3-0.05 mm is the dominant population and is rarely zoned or sieve textured. Clinopyroxene phenocryst are 0.35-0.1 mm. Olivine phenocrysts are 1.25-0.1 mm and a few have skeletal habits; opaque inclusions are common. 90.4% matrix, 3.5% plagioclase, 4.4% olivine, 1.1% clinopyroxene, 0.6% 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
94SJP42A62.43407107-143.1810236Preece, S. J.1994-00-00 Skookum CreekNabesna B-5; T8N, R12E, S34Approximately 15’ thick flow overlying 94SJP42B at Site 6. Fine-grained, hypocrystalline, intersertal, porphyritic with a matrix of brown glass, mesostasis, opaque and plagioclase. There is a dark patch that may represent a resorbed inclusion. Plagioclase phenocrysts (An44 - An55) occur in two size populations: 0.7-0.65 mm is less common and displays sieve textured zones and zoning; 0.3-0.05 mm is the dominant population and is rarely zoned or sieve textured. Clinopyroxene phenocryst are 0.35-0.1 mm. Olivine phenocrysts are 1.25-0.1 mm and a few have skeletal habits; opaque inclusions are common. 90.4% matrix, 3.5% plagioclase, 4.4% olivine, 1.1% clinopyroxene, 0.6% vesicles.94SJP42ALavaWhole-rock 57.05 0.83 16.67 6.29 0.12 6.36 7.3 3.55 1.21 0.28 100.3455DCP6.976.29LOI=0.31DCP 19.8 489 665 16 115 4.1 4.9 1.7 21.2 180 210 147 78 71 17.1 55XRF: Rb, Zr, Nb, Th, U, Ni, Ga; DCP: Ba, Sc, V; MX: Sr, Y, Cr, Cu, Zn;

SAMPLE LOCATION

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