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SAMPLE INFO : 54-D-33
Sample ID:54-D-33
Station ID:54-D-33
Latitude:53.894
Longitude:-166.692
Datum:NAD83
Date Sampled:1954-01-01
Sample Type 1:Lava
Field Lithology:Basalt
Text Description:
Olivine basalt porphyry from the Makushin volcanics 4 1/4 miles south of Tabletop Mountain and 4 miles east of Sugarloaf Cone. It is medium dark gray to grayish purple and contains plagioclase, pyroxene, and olivine phenocrysts 1-4 millimeters long. Phenocrysts compose 30 percent of the rock : 15 percent labradorite (?) , which forms euhedral laths to anhedral fragments, and stubby crystals, and which contains oscillatory and normal zones, and zones of dusty inclusions; 10 percent augite or diopside, which form faintly zoned euhedral grains and fragments ; 5 percent subhedral to anhedral olivine. The groundmass has a granular to flow texture and consists of abundant plagioclase, much clinopyroxene and a black opaque mineral, and traces of olivine(?) and cristobalite. Alteration is sparse; chlorite (?) replaces olivine.

References:
Geology of Unalaska Island and adjacent insular shelf, 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
54-D-33 53.894 -166.692 Drewes, Harald 1954-01-01 MakushinMakushin volcanics from 2 1/2 mi W of Broad Bay, 4 1/4 miles south of Tabletop Mountain and 4 miles east of Sugarloaf ConeOlivine basalt porphyry from the Makushin volcanics 4 1/4 miles south of Tabletop Mountain and 4 miles east of Sugarloaf Cone. It is medium dark gray to grayish purple and contains plagioclase, pyroxene, and olivine phenocrysts 1-4 millimeters long. Phenocrysts compose 30 percent of the rock : 15 percent labradorite (?) , which forms euhedral laths to anhedral fragments, and stubby crystals, and which contains oscillatory and normal zones, and zones of dusty inclusions; 10 percent augite or diopside, which form faintly zoned euhedral grains and fragments ; 5 percent subhedral to anhedral olivine. The groundmass has a granular to flow texture and consists of abundant plagioclase, much clinopyroxene and a black opaque mineral, and traces of olivine(?) and cristobalite. Alteration is sparse; chlorite (?) replaces olivine.54-D-33 50.96 0.55 16.35 0.14 9.83 10.93 2.11 0.89 0.12 100.3533XRF3.214.91LOI=0.6XRFB V=0, M=NN, R=315;S V=0, M=RAPIDA, R=315;K V=7389, M=CALC, R=533;Yb V=0, M=NN, R=315;Y V=0, M=NN, R=315;Zr V=0.003, M=NN, R=315;Pb V=0, M=NN, R=315;Ti V=3298, M=CALC, R=533;
54-D-33 53.894 -166.692 Drewes, Harald 1954-01-01 MakushinMakushin volcanics from 2 1/2 mi W of Broad Bay, 4 1/4 miles south of Tabletop Mountain and 4 miles east of Sugarloaf ConeOlivine basalt porphyry from the Makushin volcanics 4 1/4 miles south of Tabletop Mountain and 4 miles east of Sugarloaf Cone. It is medium dark gray to grayish purple and contains plagioclase, pyroxene, and olivine phenocrysts 1-4 millimeters long. Phenocrysts compose 30 percent of the rock : 15 percent labradorite (?) , which forms euhedral laths to anhedral fragments, and stubby crystals, and which contains oscillatory and normal zones, and zones of dusty inclusions; 10 percent augite or diopside, which form faintly zoned euhedral grains and fragments ; 5 percent subhedral to anhedral olivine. The groundmass has a granular to flow texture and consists of abundant plagioclase, much clinopyroxene and a black opaque mineral, and traces of olivine(?) and cristobalite. Alteration is sparse; chlorite (?) replaces olivine.54-D-33 50.810487284576 0.55011354343537 16.303365014539 7.7809659913806 0.14002890196537 9.8020231375756 10.902250224446 2.1004335294805 0.89018373392268 0.12002477311317Total not given in table. 100.3315RAPIDA3.24.9H2OM=0.14; H2OP=0.46; CO2=0.05RAPIDABa V=0.05, M=NN, R=315;Sr V=0.1, M=NN, R=315;Co V=0.005, M=NN, R=315;Cr V=0.05, M=NN, R=315;Cu V=0.007, M=NN, R=315;Ga V=0, M=NN, R=315;Mo V=0, M=NN, R=315;Ni V=0.001, M=NN, R=315;Sc V=0.005, M=NN, R=315;V V=0.02, M=NN, R=315;

SAMPLE LOCATION

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