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SAMPLE INFO : 47AC110
Sample ID:47AC110
Station ID:47AC110
Latitude:51.93569
Longitude:179.5848
Datum:NAD83
Date Sampled:1947-01-01
Sample Type 1:Lava
Sample Type 2:Flow
Final Unit:Cerberus
Text Description:
Specimen 47AC110 (131,000' E., 282,250' N.) is from a relatively short flow, which was sampled on the southeast side of the southeast peak of Mount Cerberus. It is a dark-gray (N 3) dense vitrophyre, with a seriate texture. About 25 percent of the rock is plagioclase (1 mm in size), averaging about An45; the other phenocrysts are augite, sparse hypersthene (En65,) in slender needles, apatite as pseudodichroic prisms, and magnetite. The groundmass consists of plagioclase microlites, augite, and magnetite in pale-brown glass.

References:
Geologic reconnaissance of Semisopochnoi Island, western Aleutian Islands, Alaska
Postglacial eruptive history and geochemistry of Semisopochnoi volcano, western 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
47AC11051.93569179.5848Unknown, Unknown1947-01-01 CerberusSemisopochnoi Island, short flow on the southeast side of the southeast peak of Mount Cerberus (131,000' E, 282,250' N)Specimen 47AC110 (131,000' E., 282,250' N.) is from a relatively short flow, which was sampled on the southeast side of the southeast peak of Mount Cerberus. It is a dark-gray (N 3) dense vitrophyre, with a seriate texture. About 25 percent of the rock is plagioclase (1 mm in size), averaging about An45; the other phenocrysts are augite, sparse hypersthene (En65,) in slender needles, apatite as pseudodichroic prisms, and magnetite. The groundmass consists of plagioclase microlites, augite, and magnetite in pale-brown glass.47AC110LavaCerberusWhole-rock 62.64 0.81 16.32 5.99 0.18 1.65 4.17 4.68 2.79 0.43 99.96368NN1.264.85H2OP=0.08; H2OM=0.01; CO2=0.01; Cl=0.12; F=0.05NN 67.8 312 6.7 units are percent 2.32745XRF: Rb, Sr, Ni; NN: K;
47AC11051.93569179.5848Unknown, Unknown1947-01-01 CerberusSemisopochnoi Island, short flow on the southeast side of the southeast peak of Mount Cerberus (131,000' E, 282,250' N)Specimen 47AC110 (131,000' E., 282,250' N.) is from a relatively short flow, which was sampled on the southeast side of the southeast peak of Mount Cerberus. It is a dark-gray (N 3) dense vitrophyre, with a seriate texture. About 25 percent of the rock is plagioclase (1 mm in size), averaging about An45; the other phenocrysts are augite, sparse hypersthene (En65,) in slender needles, apatite as pseudodichroic prisms, and magnetite. The groundmass consists of plagioclase microlites, augite, and magnetite in pale-brown glass.47AC110LavaCerberusWhole-rock H2OP=0.08; H2OM=0.01; CO2=0.01; Cl=0.12; F=0.05NN 40.3 214 63 7.2 10.9 15 80.3 201XRF
47AC11051.93569179.5848Unknown, Unknown1947-01-01 CerberusSemisopochnoi Island, short flow on the southeast side of the southeast peak of Mount Cerberus (131,000' E, 282,250' N)Specimen 47AC110 (131,000' E., 282,250' N.) is from a relatively short flow, which was sampled on the southeast side of the southeast peak of Mount Cerberus. It is a dark-gray (N 3) dense vitrophyre, with a seriate texture. About 25 percent of the rock is plagioclase (1 mm in size), averaging about An45; the other phenocrysts are augite, sparse hypersthene (En65,) in slender needles, apatite as pseudodichroic prisms, and magnetite. The groundmass consists of plagioclase microlites, augite, and magnetite in pale-brown glass.47AC110LavaCerberusWhole-rock H2OP=0.08; H2OM=0.01; CO2=0.01; Cl=0.12; F=0.05NN units are percent 0.2units are percent 0.04 units are percent 0.01units are percent 0.02 units are percent 0.002 0.02 0.001 units are percent 0.002 units are percent 0.002 368SPEC

SAMPLE LOCATION

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