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SAMPLE INFO : 46AC36
Sample ID:46AC36
Station ID:46AC36
Latitude:51.9898
Longitude:-176.58705
Datum:NAD83
Date Sampled:1946-01-01
Sample Type 1:Lava
Sample Type 2:Flow
Field Lithology:Basalt
 Text Description:
A dense porphyritic, olive basalt, light brownish-gray (5YR 6/1). About 85 per cent phenocrysts, chiefly plagioclase, salite, and olivine. Plagioclase clear, ranging in size from 2 to 0.2 mm, in composition from An98 to An54, with a median of about An67. Extreme outer zones reach An10. Salite crystals are greenish-black (5G 3/1) in hand specimen, reaching a size of 4mm. NX is 1.701 and nZ 1.728, corresponding to salite with atomic proportions of Fe25Ca50Mg25. Olivine, which is sparse, reaches a size of about 1mm, in honey-yellow (10YR 6/4) crystals, with nY about 1.714, corresponding to Fa30.

References:
A petrologic re-investigation of the Adak volcanic center, central Aleutian arc, Alaska
Magmatic differentiation in Tertiary and Quaternary volcanic rocks from Adak and Kanaga Islands, 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
46AC3651.9898-176.58705Unknown, Unknown1946-01-01 AdagdakFrom interbedded basaltic lava flows and tuffaceous sandstones, at a point 4,550 feet south and 5 degrees west of triangulation station "Clam", and about 4,000 feet northeast from the northeast corner of Clam Lagoon.A dense porphyritic, olive basalt, light brownish-gray (5YR 6/1). About 85 per cent phenocrysts, chiefly plagioclase, salite, and olivine. Plagioclase clear, ranging in size from 2 to 0.2 mm, in composition from An98 to An54, with a median of about An67. Extreme outer zones reach An10. Salite crystals are greenish-black (5G 3/1) in hand specimen, reaching a size of 4mm. NX is 1.701 and nZ 1.728, corresponding to salite with atomic proportions of Fe25Ca50Mg25. Olivine, which is sparse, reaches a size of about 1mm, in honey-yellow (10YR 6/4) crystals, with nY about 1.714, corresponding to Fa30.46AC36LavaWhole-rock 48.16 0.92 17.9 10.36 0.17 6.15 11.86 2.99 1 0.3 100.181085NN4.486.3H2OP=0.04; H2OM=0.1NN 24 252 458 8.85 20.1 13 3.46 1.1 3.54 3.59 2.32 1.98 21.3 72 6 35 341 34 23 83 155DCP
46AC3651.9898-176.58705Unknown, Unknown1946-01-01 AdagdakFrom interbedded basaltic lava flows and tuffaceous sandstones, at a point 4,550 feet south and 5 degrees west of triangulation station "Clam", and about 4,000 feet northeast from the northeast corner of Clam Lagoon.A dense porphyritic, olive basalt, light brownish-gray (5YR 6/1). About 85 per cent phenocrysts, chiefly plagioclase, salite, and olivine. Plagioclase clear, ranging in size from 2 to 0.2 mm, in composition from An98 to An54, with a median of about An67. Extreme outer zones reach An10. Salite crystals are greenish-black (5G 3/1) in hand specimen, reaching a size of 4mm. NX is 1.701 and nZ 1.728, corresponding to salite with atomic proportions of Fe25Ca50Mg25. Olivine, which is sparse, reaches a size of about 1mm, in honey-yellow (10YR 6/4) crystals, with nY about 1.714, corresponding to Fa30.46AC36LavaWhole-rock H2OP=0.04; H2OM=0.1NN units are percent 0.03units are percent 0.08units are percent 0 units are percent 0.004 units are percent 0 0.02units are percent 0.002 0.002units are percent 0.0018units are percent 0.003 units are percent 0.0009units are percent 0units are percent 0 1085SPEC

SAMPLE LOCATION

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