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SAMPLE INFO : 46AC127
Sample ID:46AC127
Station ID:46AC127
Latitude:51.9689
Longitude:-177.132
Datum:NAD83
Date Sampled:1946-01-01
Sample Type 1:Lava
Sample Type 2:Flow
Field Lithology:Basalt
Text Description:
Medium dark-gray (N4) hypersthene-olivine basalt flow. Plagioclase phenocrysts, ranging in size from 0.1 to 4 mm, are conspicuously zoned. The median composition, judging from the index, is about An[?]. The dark-green augite crystals, ranging in size from 0.1 to 3 mm, have nZ 1.718 corresponding to Ca50Mg32Fe18. Hypersthene prisms have nZ 1.703, suggesting a composition of En72Fs28. Olivine, in grains as much as 1 mm across, has nZ 1.70, corresponding to a composition of Fo85Fa15. Small grains of magnetite or ilmenite are the principal accessory. The groundmass consists of plagioclase laths about 0.01 mm long and augite rods and granules up to 0.005 mm wide, in a brown glass, with an index of 1.505.

References:
Magmatic differentiation in Tertiary and Quaternary volcanic rocks from Adak and Kanaga Islands, Aleutian Islands, Alaska

GEOCHEM DATA
StationIDLatitudeLongitudeGeologistDateVisitedVolcanoLocation DescriptionText DescriptionSample 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
46AC127 51.9689 -177.132 Unknown, Unknown 1946-01-01 Ancient Mount KanatonLava flow, part of a series forming Mt. Kanaton. About 5,600 feet south 20 degrees east from the summit (1,145 feet) of Kanaga Island in the soma lake.Medium dark-gray (N4) hypersthene-olivine basalt flow. Plagioclase phenocrysts, ranging in size from 0.1 to 4 mm, are conspicuously zoned. The median composition, judging from the index, is about An[?]. The dark-green augite crystals, ranging in size from 0.1 to 3 mm, have nZ 1.718 corresponding to Ca50Mg32Fe18. Hypersthene prisms have nZ 1.703, suggesting a composition of En72Fs28. Olivine, in grains as much as 1 mm across, has nZ 1.70, corresponding to a composition of Fo85Fa15. Small grains of magnetite or ilmenite are the principal accessory. The groundmass consists of plagioclase laths about 0.01 mm long and augite rods and granules up to 0.005 mm wide, in a brown glass, with an index of 1.505.46AC127 53.546543793667 0.6786887190996 17.64590669659 8.1175242936627 0.17965289623225 5.4993747679982 8.3738211077142 3.3734821625833 1.7067025142064 0.41919009120858 100.591085NN3.964.57H2OP=0.24; H2OM=0.22NN

SAMPLE LOCATION

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