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SAMPLE INFO : 54-F-55
Sample ID:54-F-55
Station ID:54-F-55
Latitude:53.874
Longitude:-166.916
Datum:NAD83
Date Sampled:1954-01-01
Sample Type 1:Lava
Field Lithology:Andesite
Text Description:
Olivine-bearing andesite porphyry from the Makushin volcanics one-half mile south of the vent to Makushin Volcano. It is dark gray and vuggy and contains plagioclase and pyroxene phenocrysts 2-3 millimeters long. Phenocrysts compose 25 percent of the rock: 14 percent sodic labradorite, which forms euhedral to anhedral grains, fragments, and stubby crystals, and which has normal and oscillatory zones, zones of dusty inclusions, and apatite inclusions; 5 percent euhedral crystals and fragments of augite(?); 2 percent subhedral to anhedral hypersthene with augite (?) reaction rims; 3 percent anhedral olivine; and 1 percent subhedral to anhedral magnetite. The groundmass has an intergranular to obscured texture and includes abundant laths and stubby crystals of calcic andesine, much glass and granular augite (?), and traces of hypersthene, olivine, and a granular black opaque mineral.

References:
Geology of Unalaska Island and adjacent insular shelf, Aleutian Islands, Alaska

GEOCHEM DATA
StationIDLatitudeLongitudeGeologistDateVisitedVolcanoEruptionLocation DescriptionText DescriptionSample IDMaterialSiO2TiO2Al2O3FeOTMnOMgOCaONa2OK2OP2O5Total-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
54-F-5553.874-166.916Fraser, G. D.1954-01-01MakushinMakushin volcanics from 1 mi S of Makushin VolcanoOlivine-bearing andesite porphyry from the Makushin volcanics one-half mile south of the vent to Makushin Volcano. It is dark gray and vuggy and contains plagioclase and pyroxene phenocrysts 2-3 millimeters long. Phenocrysts compose 25 percent of the rock: 14 percent sodic labradorite, which forms euhedral to anhedral grains, fragments, and stubby crystals, and which has normal and oscillatory zones, zones of dusty inclusions, and apatite inclusions; 5 percent euhedral crystals and fragments of augite(?); 2 percent subhedral to anhedral hypersthene with augite (?) reaction rims; 3 percent anhedral olivine; and 1 percent subhedral to anhedral magnetite. The groundmass has an intergranular to obscured texture and includes abundant laths and stubby crystals of calcic andesine, much glass and granular augite (?), and traces of hypersthene, olivine, and a granular black opaque mineral.54-F-55Whole Rock 56.88 0.98 16.78 0.17 3.72 7.64 3.72 1.41 0.26 100.8533XRF2.815.63LOI=0.57XRFB V=0.005, M=NN, R=315;S V=0.01, M=RAPIDA, R=315;Ba V=0.08, M=NN, R=315;Sr V=0.1, M=NN, R=315;K V=11705, M=CALC, R=533;Yb V=0, M=NN, R=315;Y V=0, M=NN, R=315;Zr V=0.01, M=NN, R=315;Pb V=0, M=NN, R=315;Co V=0.002, M=NN, R=315;Cr V=0.004, M=NN, R=315;Cu V=0.007, M=NN, R=315;Ga V=0, M=NN, R=315;Mo V=0, M=NN, R=315;Ni V=0, M=NN, R=315;Sc V=0.005, M=NN, R=315;V V=0.02, M=NN, R=315;Ti V=5875, M=CALC, R=533;
54-F-5553.874-166.916Fraser, G. D.1954-01-01MakushinMakushin volcanics from 1 mi S of Makushin VolcanoOlivine-bearing andesite porphyry from the Makushin volcanics one-half mile south of the vent to Makushin Volcano. It is dark gray and vuggy and contains plagioclase and pyroxene phenocrysts 2-3 millimeters long. Phenocrysts compose 25 percent of the rock: 14 percent sodic labradorite, which forms euhedral to anhedral grains, fragments, and stubby crystals, and which has normal and oscillatory zones, zones of dusty inclusions, and apatite inclusions; 5 percent euhedral crystals and fragments of augite(?); 2 percent subhedral to anhedral hypersthene with augite (?) reaction rims; 3 percent anhedral olivine; and 1 percent subhedral to anhedral magnetite. The groundmass has an intergranular to obscured texture and includes abundant laths and stubby crystals of calcic andesine, much glass and granular augite (?), and traces of hypersthene, olivine, and a granular black opaque mineral.54-F-55Whole Rock 56.7 0.98 16.7 8.1 0.17 3.7 7.6 3.7 1.4 0.26Total not given in table. 100.14315RAPIDA2.85.6H2OM=0.04; H2OP=0.53; CO2=0.05RAPIDAB V=0.005, M=NN, R=315;S V=0.01, M=RAPIDA, R=315;Ba V=0.08, M=NN, R=315;Sr V=0.1, M=NN, R=315;K V=11705, M=CALC, R=533;Yb V=0, M=NN, R=315;Y V=0, M=NN, R=315;Zr V=0.01, M=NN, R=315;Pb V=0, M=NN, R=315;Co V=0.002, M=NN, R=315;Cr V=0.004, M=NN, R=315;Cu V=0.007, M=NN, R=315;Ga V=0, M=NN, R=315;Mo V=0, M=NN, R=315;Ni V=0, M=NN, R=315;Sc V=0.005, M=NN, R=315;V V=0.02, M=NN, R=315;Ti V=5875, M=CALC, R=533;

SAMPLE LOCATION

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