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SAMPLE INFO : 94SJP50A
Sample ID:94SJP50A
Station ID:94SJP50A
Latitude:62.41629204
Longitude:-143.1010239
Datum:NAD83
Date Sampled:1994-00-00
Sample Type 1:Lava
Sample Type 2:Flow
Field Lithology:Andesite
 Text Description:
Flows with thick rubble zones and thin massive zones. The package is a couple of hundred feet thick and overlies silicic material in Finger Creek. The sample is from the top flow and is cut by a dike (94SJP50B). Fine-grained, holocrystalline, weakly pilotaxitic, intersertal, locally intergranular, seriate porphyritic with a matrix of mesostasis, opaque, feldspar, clinopyroxene, orthopyroxene, yellowish altered patches, and calcite alteration. Plagioclase phenocrysts (An26-An55) are up to 1.1 mm, display complex zoning, and a few grains have sieve textured intermediate zones. Orthopyroxene phenocrysts are up to 0.6 mm and have clinopyroxene rims. Clinopyroxene phenocrysts are up to 0.35 mm.

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
94SJP50A62.41629204-143.1010239Preece, S. J.1994-00-00 Skookum CreekNabesna B-5, T7N, R12E, S1Flows with thick rubble zones and thin massive zones. The package is a couple of hundred feet thick and overlies silicic material in Finger Creek. The sample is from the top flow and is cut by a dike (94SJP50B). Fine-grained, holocrystalline, weakly pilotaxitic, intersertal, locally intergranular, seriate porphyritic with a matrix of mesostasis, opaque, feldspar, clinopyroxene, orthopyroxene, yellowish altered patches, and calcite alteration. Plagioclase phenocrysts (An26-An55) are up to 1.1 mm, display complex zoning, and a few grains have sieve textured intermediate zones. Orthopyroxene phenocrysts are up to 0.6 mm and have clinopyroxene rims. Clinopyroxene phenocrysts are up to 0.35 mm.94SJP50ALavaWhole-rock 56.81 0.8 18.58 5.7 0.18 3.93 7.85 3.7 1.5 0.12 99.0455DCP6.225.7LOI=0.85DCP 24.7 525 717 18 106 3.6 4.8 1.6 21.3 186 28 39 64 61 19.2 55XRF: Rb, Zr, Nb, Th, U, Ni, Ga; DCP: Ba, Sc, V; MX: Sr, Y, Cr, Cu, Zn;

SAMPLE LOCATION

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