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SAMPLE INFO : 81-ARh-19
Sample ID:81-ARh-19
Station ID:81-ARh-19
Latitude:62.2984
Longitude:-143.75298
Datum:NAD83
Date Sampled:1981-00-00
Sample Type 1:Lava
Sample Type 2:Dome
Field Lithology:Dacite
Text Description:
Wrangell Lava. Dacite flow-dome and plug. Pale-red to light-gray massive flow dome exhibiting a columnar-jointed base and a crackled and brecciated, medium-gray glassy plug (?) (shown by crosses). Rock is porphyritic containing phenocrysts of plagioclase (12-15%, as large as 3 mm), oxyhornblende (2-3%, 2 mm), hypersthene (trace to 1%, 2 mm) and traces of opaque minerals in a cryptocrystalline matrix.

References:
Geologic map of the Nabesna B-6 Quadrangle, south-central 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
81-ARh-1962.2984-143.75298Richter, D. H.1981-00-00 Wrangell Lava; Nabesna B-6 quadrangle. Latitude and longitude derived from paper map.Wrangell Lava. Dacite flow-dome and plug. Pale-red to light-gray massive flow dome exhibiting a columnar-jointed base and a crackled and brecciated, medium-gray glassy plug (?) (shown by crosses). Rock is porphyritic containing phenocrysts of plagioclase (12-15%, as large as 3 mm), oxyhornblende (2-3%, 2 mm), hypersthene (trace to 1%, 2 mm) and traces of opaque minerals in a cryptocrystalline matrix.81-ARh-19LavaWhole-rock 65.1 0.54 16.9 3.96 0.08 2.49 5.02 4.02 1.71 0.15 99.362321NN3.021.2H2OP=0.05; H2OM=0.02; CO2=0.01RAPIDA

SAMPLE LOCATION

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