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Sample info : 53-F-39
Sample ID:53-F-39
Station ID:53-F-39
Latitude:53.88707
Longitude:-166.93202
Datum:NAD83
Date Sampled:1953-01-01
Sample Type 1:Lava
Field Lithology:Andesite
Text Description:
Albitized andesite(?) porphyry from the Unalaska formation, 1 1/2 miles south of Hive Bay and about halfway between Staraya Bay and Udagak Strait. It is medium-light gray to medium gray and has chalky plagiociase phenocrysts 1 to 5 millimeters long. Phenocrysts compose 5 percent of the rock: 4 percent albite, which forms euhedral to subhedral laths and stubby crystals having apatite inclusions; and 1 percent euhedral to anhedral magnetite. The groundmass is mottled and indistinct. Alteration is intense: albite and kaolin are pervasive; calcite is common and forms irregular patches near albite clusters; uralite(?) is present; and quartz is rare and forms scattered grains on crudely alined pods.

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

Geochem Data:
StationIDlatitudelongitudeGeologistDateVisitedVolcanoLocationDescriptionTextDescriptionSample IDSiO2TiO2Al2O3FeOTMnOMgOCaONa2OK2OP2O5Total-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
53-F-3953.88707-166.93202Fraser, G. D.1953-01-01MakushinUnalaska formation from 1 1/2 mi S of Hive BayAlbitized andesite(?) porphyry from the Unalaska formation, 1 1/2 miles south of Hive Bay and about halfway between Staraya Bay and Udagak Strait. It is medium-light gray to medium gray and has chalky plagiociase phenocrysts 1 to 5 millimeters long. Phenocrysts compose 5 percent of the rock: 4 percent albite, which forms euhedral to subhedral laths and stubby crystals having apatite inclusions; and 1 percent euhedral to anhedral magnetite. The groundmass is mottled and indistinct. Alteration is intense: albite and kaolin are pervasive; calcite is common and forms irregular patches near albite clusters; uralite(?) is present; and quartz is rare and forms scattered grains on crudely alined pods.53-F-39 63.305358489059 0.73889535144958 16.6750707692 4.6425593737363 0.099850723168863 1.1982086780264 1.7973130170395 7.3889535144958 1.8971637402084 0.32950738645725Total not given in table. 100.4315RAPIDA2.52.4H2OM=0.05; H2OP=1.1; CO2=0.78RAPIDAB V=0.002, M=NN, R=315;S V=0, M=RAPIDA, R=315;Ba V=0.03, M=NN, R=315;Sr V=0.01, M=NN, R=315;Yb V=0, M=NN, R=315;Y V=0, M=NN, R=315;Zr V=0.02, M=NN, R=315;Pb V=0, M=NN, R=315;Co V=0, M=NN, R=315;Cr V=0, M=NN, R=315;Cu V=0.0007, M=NN, R=315;Ga V=0.002, M=NN, R=315;Mo V=0, M=NN, R=315;Ni V=0, M=NN, R=315;Sc V=0.001, M=NN, R=315;V V=0.009, M=NN, R=315;


Sample Location

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