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SAMPLE INFO : 9
Sample ID:9
Station ID:9
Latitude:57.18
Longitude:-170.3
Datum:NAD83
Date Sampled:1948-01-01
Sample Type 1:Lava
Sample Type 2:Flow
Text Description:
Sample of a holocrystalline flow of aphyric basanite. The rock is very fine grained; rare microphenocrysts of plagioclase and pyroxene are seen. The groundmass shows sharp, small euhedral crystals of olivine, and very small crystals of pyroxene. The plagioclase laths average 0.02 x 0.0015 mm and show a vague preferred orientation. Feldspars range from An55 to An35, with an average composition of An40.

References:
Geology and petrology of the Pribilof Islands, Alaska

GEOCHEM DATA
StationIDLatitudeLongitudeGeologistDateVisitedAge InfoVolcanoEruptionLocation 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
957.18-170.3Barth, T. F. W.1948-01-01 St. Paul IslandNortheast shore of Otter Island.Sample of a holocrystalline flow of aphyric basanite. The rock is very fine grained; rare microphenocrysts of plagioclase and pyroxene are seen. The groundmass shows sharp, small euhedral crystals of olivine, and very small crystals of pyroxene. The plagioclase laths average 0.02 x 0.0015 mm and show a vague preferred orientation. Feldspars range from An55 to An35, with an average composition of An40.9Whole Rock 47 2.8 17.4 11 0.2 5.1 9.9 4 1.6 0.51 99.5301RAPIDA4.37

SAMPLE LOCATION

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