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SAMPLE INFO : 54-D-65
Sample ID:54-D-65
Station ID:54-D-65
Latitude:53.958
Longitude:-166.63098
Datum:NAD83
Date Sampled:1954-01-01
Sample Type 1:Lava
Sample Type 2:Flow
Field Lithology:Basalt
 Text Description:
Olivine basalt porphyry from an Eider Point basalt flow three fourths mile southwest of Wide Bay Cone. It is medium gray and vuggy, and contains pyroxene and olivine phenocrysts 1-4 millimeters long. Phenocrysts compose 20 percent of the rock: 10 percent sodic bytownite, which forms euhedral laths, stubby crystals, and fragments, and which has normal zones, rare oscillatory zones, zones of dusty inclusions, and apatite inclusions; 5 percent augite(?), which forms euhedral to anhedral grains and embayed crystals, and which is faintly zoned; and 5 percent olivine, which forms subhedral to anhedral crystals and embayed crystals. The groundmass has an intergranular texture and consists of abundant stubby subhedral calcic andesine, much granular clinopyroxene and a black opaque mineral, and traces of olivine and tridymite.

References:
Geology of Unalaska Island and adjacent insular shelf, 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
54-D-6553.958-166.63098Drewes, Harald1954-01-01 Wide Bay coneEider Point basalt from 1/2 mi SW of Wide Bay ConeOlivine basalt porphyry from an Eider Point basalt flow three fourths mile southwest of Wide Bay Cone. It is medium gray and vuggy, and contains pyroxene and olivine phenocrysts 1-4 millimeters long. Phenocrysts compose 20 percent of the rock: 10 percent sodic bytownite, which forms euhedral laths, stubby crystals, and fragments, and which has normal zones, rare oscillatory zones, zones of dusty inclusions, and apatite inclusions; 5 percent augite(?), which forms euhedral to anhedral grains and embayed crystals, and which is faintly zoned; and 5 percent olivine, which forms subhedral to anhedral crystals and embayed crystals. The groundmass has an intergranular texture and consists of abundant stubby subhedral calcic andesine, much granular clinopyroxene and a black opaque mineral, and traces of olivine and tridymite.54-D-65LavaWhole-rock 49.8 0.88 16.6 9.1 0.18 7.8 11.7 2.5 0.72 0.18 99.85533XRF3.26.2LOI=0.49XRF 5977533CALC
54-D-6553.958-166.63098Drewes, Harald1954-01-01 Wide Bay coneEider Point basalt from 1/2 mi SW of Wide Bay ConeOlivine basalt porphyry from an Eider Point basalt flow three fourths mile southwest of Wide Bay Cone. It is medium gray and vuggy, and contains pyroxene and olivine phenocrysts 1-4 millimeters long. Phenocrysts compose 20 percent of the rock: 10 percent sodic bytownite, which forms euhedral laths, stubby crystals, and fragments, and which has normal zones, rare oscillatory zones, zones of dusty inclusions, and apatite inclusions; 5 percent augite(?), which forms euhedral to anhedral grains and embayed crystals, and which is faintly zoned; and 5 percent olivine, which forms subhedral to anhedral crystals and embayed crystals. The groundmass has an intergranular texture and consists of abundant stubby subhedral calcic andesine, much granular clinopyroxene and a black opaque mineral, and traces of olivine and tridymite.54-D-65LavaWhole-rock 49.8 0.88 16.6 9.1 0.18 7.8 11.6 2.5 0.72 0.18Total not given in table. 99.94315RAPIDA3.26.2H2OM=0.08; H2OP=0.49; CO2=0.05RAPIDA units are percent 0.05units are percent 0.1 units are percent 0 units are percent 0units are percent 0.003 units are percent 0 units are percent 0.007 0.03units are percent 0.02 0.004units are percent 0.004units are percent 0.01 units are percent 0units are percent 0 315NN

SAMPLE LOCATION

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