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SAMPLE INFO : 94SJP89A
Sample ID:94SJP89A
Station ID:94SJP89A
Latitude:62.38600563
Longitude:-143.406301
Datum:NAD83
Date Sampled:1994-00-00
Sample Type 1:Lava
Sample Type 2:Dike
Field Lithology:Rhyolite
 Text Description:
A silicic dike, trending N135°E forming a wall-like, platy outcrop on the south-west end of Tanada Lake. Fine grained, holocrystalline, porphyritic with a matrix of feldspar, opaque, amphibole? or biotite?, and a small high relief mineral. Plagioclase phenocrysts are up to 3.62 mm, and are frequently rounded; some have oscillatory zoning. Clinopyroxene phenocrysts are up to 1.2 mm and tend to have brown/opaque rims. Opaque phenocrysts are up to 0.25 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
94SJP89A62.38600563-143.406301Preece, S. J.1994-00-00 Skookum CreekNabesna B-5; T7N, R11E, S17A silicic dike, trending N135°E forming a wall-like, platy outcrop on the south-west end of Tanada Lake. Fine grained, holocrystalline, porphyritic with a matrix of feldspar, opaque, amphibole? or biotite?, and a small high relief mineral. Plagioclase phenocrysts are up to 3.62 mm, and are frequently rounded; some have oscillatory zoning. Clinopyroxene phenocrysts are up to 1.2 mm and tend to have brown/opaque rims. Opaque phenocrysts are up to 0.25 mm.94SJP89ALavaWhole-rock 72.21 0.37 13.9 2.66 0.11 0.24 0.69 6.1 3.46 0.11 100.0355DCP2.942.66LOI=0.1DCP 66 967 39 59 588 18.6 7.9 2.7 9.6 7bdl 2 2 93 20.3 55XRF: Rb, Zr, Nb, Th, U, Ni, Ga; DCP: Ba, Sc, V; MX: Sr, Y, Cu, Zn;

SAMPLE LOCATION

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