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SAMPLE INFO : 94SJP107
Sample ID:94SJP107
Station ID:94SJP107
Latitude:62.20294154
Longitude:-143.1065685
Datum:NAD83
Date Sampled:1994-00-00
Sample Type 1:Lava
Sample Type 2:Dome
Field Lithology:Andesite
Text Description:
Grab sample from platy rubble of a dome at the south end of Jaeger Mesa. Fine grained, holocrystalline, seriate porphyritic with a matrix of cryptocrystalline material, opaque, orthopyroxene and plagioclase. Plagioclase phenocrysts (An31 - An53) are up to 0.8 mm and tend to have strong normal zoning and occasional oscillatory zoning; the grains tend to include microlites. Opaque phenocrysts are up to 0.1 mm. Orthopyroxene phenocrysts are up to 0.25 mm. An opaque aggregate may represent an altered phase.

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
94SJP10762.20294154-143.1065685Preece, S. J.1994-00-00 Skookum CreekNabesna B-5; T5N, R12E, S24Grab sample from platy rubble of a dome at the south end of Jaeger Mesa. Fine grained, holocrystalline, seriate porphyritic with a matrix of cryptocrystalline material, opaque, orthopyroxene and plagioclase. Plagioclase phenocrysts (An31 - An53) are up to 0.8 mm and tend to have strong normal zoning and occasional oscillatory zoning; the grains tend to include microlites. Opaque phenocrysts are up to 0.1 mm. Orthopyroxene phenocrysts are up to 0.25 mm. An opaque aggregate may represent an altered phase.94SJP107LavaWhole-rock 63.27 0.74 17.73 5.16 0.14 1.64 4.54 5.07 1.54 0.36 100.2655DCP5.715.16LOI=-0.19DCP 25.7 589 518 25 231 7.5 4< 0.5 6.9 53bdl 2 9 78 19.7 55XRF: Rb, Zr, Nb, Th, U, Ni, Ga; DCP: Ba, Sc, V; MX: Sr, Y, Cu, Zn;

SAMPLE LOCATION

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