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SAMPLE INFO : SG01-017
Sample ID:SG01-017
Station ID:SG01-017
Latitude:56.594984708569
Longitude:-169.54658526377
Datum:NAD83
Date Sampled:0000-00-00
Sample Type 1:Lava
Text Description:
St. George Island, Group 2 type rocks (From Chang and others, 2009): "Group 2 rocks are generally porphyritic, with fine-grained, holocrystalline groundmasses of olivine, clinopyroxene, plagioclase, and opaque minerals. Olivine is the most common phenocryst phase, although a few plagioclase phenocrysts are commonly observed, and some rocks also contain clinopyroxene phenocrysts. Olivine phenocrysts in two rocks range from Fo91 to Fo69 and average Fo80. As in the group 1 rocks, the olivine phenocrysts may be skeletal to euhedral. Clinopyroxene compositions in one group 2 rock have XMg=85-79, with an average value of 83, with average core and rim compositions of XMg=84 and 81, respectively. Some clinopyroxene grains exhibit sector-zoning."

References:
Petrogenesis of basaltic volcanic rocks from the Pribilof Islands, Alaska, by melting of metasomatically enriched depleted lithosphere, crystallization differentiation, and magma mixing

GEOCHEM DATA
StationIDLatitudeLongitudeGeologistDateVisitedAge InfoVolcanoEruptionLocation DescriptionText DescriptionSample IDSample Type 1Sample Type 2geologic 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
SG01-017 56.594984708569 -169.54658526377 Unknown, Unknown 0000-00-00 St. George volcanic field Group 2 St. George Island, Group 2 type rocks (From Chang and others, 2009): "Group 2 rocks are generally porphyritic, with fine-grained, holocrystalline groundmasses of olivine, clinopyroxene, plagioclase, and opaque minerals. Olivine is the most common phenocryst phase, although a few plagioclase phenocrysts are commonly observed, and some rocks also contain clinopyroxene phenocrysts. Olivine phenocrysts in two rocks range from Fo91 to Fo69 and average Fo80. As in the group 1 rocks, the olivine phenocrysts may be skeletal to euhedral. Clinopyroxene compositions in one group 2 rock have XMg=85-79, with an average value of 83, with average core and rim compositions of XMg=84 and 81, respectively. Some clinopyroxene grains exhibit sector-zoning." SG01-017 Lava Whole Rock 47.7 2.333 13.9 11.66 0.176 10.38 9.42 3.07 1.01 0.367 99.6424882XRF11.66 9 126 439 11 27 21 144 27.3 0 3 28 222 284 215 107 4882XRF

SAMPLE LOCATION

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