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SAMPLE INFO : AK-81-50
Sample ID:AK-81-50
Station ID:AK-81-50
Latitude:54.13308
Longitude:-165.98555
Datum:NAD83
Date Sampled:1981-01-01
Sample Type 1:Lava
Sample Type 2:Dike
Field Lithology:Andesite
Text Description:
Slightly altered porphyritic andesite dike. Plagioclase and clinopyroxene phenocrysts in a holocrystalline groundmass. The clinopyroxene exhibits two periods of growth: an early stage as independent phenocrysts and a late stage where it ophitically encloses groundmass plagioclase laths. The two stages are optically continuous.

References:
The igneous petrology and geochemistry of northern Akutan Island, 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
AK-81-5054.13308-165.98555Unknown, Unknown1981-01-01AkutanHot Springs Bay Valley, Eastern Akutan IslandSlightly altered porphyritic andesite dike. Plagioclase and clinopyroxene phenocrysts in a holocrystalline groundmass. The clinopyroxene exhibits two periods of growth: an early stage as independent phenocrysts and a late stage where it ophitically encloses groundmass plagioclase laths. The two stages are optically continuous.AK-81-50Whole Rock 47.33 1.07 17.42 10.96 0.2 8.2 11.66 2.2 0.79 0.22 97.281876XRF46.66

SAMPLE LOCATION

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