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SAMPLE INFO : 91CND07
Sample ID:91CND07
Station ID:91CND07
Latitude:58.898331
Longitude:-153.459718
Datum:NAD83
Date Sampled:1991-01-01
Sample Type 1:Lava
Text Description:
Very dark gray lava in older volcanics. Geodes and ruby red plagioclase indicate alteration and silica mobilization. Not much fresh rock in immediate area. Porphyritic two-pyroxene dacite. ~25% phenocrysts of plagioclase (up to 1.0 x 0.4 mm), pyroxene (0.8 x 0.3 mm), and opaque Fe-Ti oxides in a matrix of devitrified glass and subordinate microphenocrysts and microlites. Pl:px ~ 3:2

References:
Geochemistry of some Quaternary lavas from the Aleutian Arc and Mt. Wrangell

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
91CND0758.898331-153.459718Nye, C. J.1991-07-19 DouglasVery dark gray lava in older volcanics. Geodes and ruby red plagioclase indicate alteration and silica mobilization. Not much fresh rock in immediate area. Porphyritic two-pyroxene dacite. ~25% phenocrysts of plagioclase (up to 1.0 x 0.4 mm), pyroxene (0.8 x 0.3 mm), and opaque Fe-Ti oxides in a matrix of devitrified glass and subordinate microphenocrysts and microlites. Pl:px ~ 3:291CND07LavaWhole-rock 63.51 0.705 16.59 0.143 2.8 6.23 3.86 0.811 0.125 99.8413291XRF5.23 10.89807 54 496 305 4 23 2.75401 12.13685 3.34928 0.92273 3.72018 0.6481 4.21373 0.89116 2.458 0.37026 2.38489 0.38429 24 130 2 3.34938 0.1419 4 3 1.59831 21 157 18 13 51 60 18 13291ICPMS: Cs, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Hf, Ta, U; XRF: Rb, Ba, Sr, La, Ce, Y, Zr, Nb, Pb, Th, Sc, V, Cr, Ni, Cu, Zn, Ga;

SAMPLE LOCATION

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