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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 plagioclase 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 aligned pods.

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

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
53-F-3953.88707-166.93202Fraser, G. D.1953-01-01 MakushinUnalaska 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 plagioclase 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 aligned pods.53-F-39LavaWhole-rock 63.3 0.74 16.7 4.6 0.1 1.2 1.8 7.4 1.9 0.33Total not given in table. 100.4315RAPIDA2.52.4H2OM=0.05; H2OP=1.1; CO2=0.78RAPIDA units are percent 0.03units are percent 0.01 units are percent 0 units are percent 0units are percent 0.02 units are percent 0 units are percent 0.001 0.009units are percent 0 0units are percent 0units are percent 0.0007 units are percent 0.002units are percent 0 315NN

SAMPLE LOCATION

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