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SAMPLE INFO : 54-F-51
Sample ID:54-F-51
Station ID:54-F-51
Latitude:53.818
Longitude:-167.00198
Datum:NAD83
Date Sampled:1954-01-01
Sample Type 1:Lava
Field Lithology:Basalt
Text Description:
Olivine-bearing feldspathic basalt from the Eider Point basalt 1 mile southwest of Pakushin Cone. It is medium dark gray and contains plagioclase phenocrysts shorter than 1 mm. Phenocrysts compose 50 percent of the rock: 35 percent sodic labradorite, which forms subhedral crystals and stubby crystals, and which has normal zones, rare oscillatory zones, and some vermicular zones of intergrown groundmass; 15 percent olivine, which forms euhedral to subhedral crystals and embayed crystals. The groundmass has a granular and glassy texture and consists of much euhedral stubby calcic andesine, much subhedral to anhedral olivine, much euhedral to granular augite(?), and a trace of cristobalite(?).

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-F-5153.818-167.00198Fraser, G. D.1954-01-01 MakushinEider Point basalt from 1 mi SW of Pakushin ConeOlivine-bearing feldspathic basalt from the Eider Point basalt 1 mile southwest of Pakushin Cone. It is medium dark gray and contains plagioclase phenocrysts shorter than 1 mm. Phenocrysts compose 50 percent of the rock: 35 percent sodic labradorite, which forms subhedral crystals and stubby crystals, and which has normal zones, rare oscillatory zones, and some vermicular zones of intergrown groundmass; 15 percent olivine, which forms euhedral to subhedral crystals and embayed crystals. The groundmass has a granular and glassy texture and consists of much euhedral stubby calcic andesine, much subhedral to anhedral olivine, much euhedral to granular augite(?), and a trace of cristobalite(?).54-F-51LavaWhole-rock 51.44 0.89 18.43 0.18 5.98 9.52 2.98 1.02 0.18 99.74533XRF3.326.06LOI=0.36XRF 8467533CALC
54-F-5153.818-167.00198Fraser, G. D.1954-01-01 MakushinEider Point basalt from 1 mi SW of Pakushin ConeOlivine-bearing feldspathic basalt from the Eider Point basalt 1 mile southwest of Pakushin Cone. It is medium dark gray and contains plagioclase phenocrysts shorter than 1 mm. Phenocrysts compose 50 percent of the rock: 35 percent sodic labradorite, which forms subhedral crystals and stubby crystals, and which has normal zones, rare oscillatory zones, and some vermicular zones of intergrown groundmass; 15 percent olivine, which forms euhedral to subhedral crystals and embayed crystals. The groundmass has a granular and glassy texture and consists of much euhedral stubby calcic andesine, much subhedral to anhedral olivine, much euhedral to granular augite(?), and a trace of cristobalite(?).54-F-51LavaWhole-rock 51.36 0.88 18.4 9.06 0.18 5.97 9.5 2.97 1.01 0.18 99.85315NN3.36.02H2OM=0.07; H2OP=0.29; CO2=0.01; Cl=0.04; F=0.03NN 10.4 706 24.6 units are percent 0.84745XRF: Rb, Sr, Ni; NN: K;
54-F-5153.818-167.00198Fraser, G. D.1954-01-01 MakushinEider Point basalt from 1 mi SW of Pakushin ConeOlivine-bearing feldspathic basalt from the Eider Point basalt 1 mile southwest of Pakushin Cone. It is medium dark gray and contains plagioclase phenocrysts shorter than 1 mm. Phenocrysts compose 50 percent of the rock: 35 percent sodic labradorite, which forms subhedral crystals and stubby crystals, and which has normal zones, rare oscillatory zones, and some vermicular zones of intergrown groundmass; 15 percent olivine, which forms euhedral to subhedral crystals and embayed crystals. The groundmass has a granular and glassy texture and consists of much euhedral stubby calcic andesine, much subhedral to anhedral olivine, much euhedral to granular augite(?), and a trace of cristobalite(?).54-F-51LavaWhole-rock H2OM=0.07; H2OP=0.29; CO2=0.01; Cl=0.04; F=0.03NN 315

SAMPLE LOCATION

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