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Text Description: Very light gray (N 8), vesicular dacite porphyry. Major minerals are plagioclase (approximately An 63), biotite, hornblende, and quartz. Weakly flow foliated and contains phenocrysts of plagioclase, biotite, quartz, and rare hornblende in an aphanitic crystalline groundmass. Probably an extrusive dome. References: ![]() |
StationID | Latitude | Longitude | Geologist | DateVisited | Age Info | Volcano | Eruption | Location Description | Text Description | Sample ID | Sample Type 1 | Sample Type 2 | Final Unit | Material | SiO2 | TiO2 | Al2O3 | FeOT | MnO | MgO | CaO | Na2O | K2O | P2O5 | Total-majors | REF majors | METH majors | Fe2O3/Fe203T orig | FeO/FeOT orig | Volatiles csv | METH volatiles | Cs | Rb | Ba | Sr | La | Ce | Pr | Nd | Sm | Eu | Gd | Tb | Dy | Ho | Er | Tm | Yb | Lu | Y | Zr | Nb | Hf | Ta | Pb | Th | U | Sc | V | Cr | Fe | Co | Ni | Cu | Zn | Ga | Mo | As | Na | K | Ref trace1 | METH trace1 | Rb | Ba | Sr | La | Ce | Nd | Sm | Eu | Gd | Dy | Er | Yb | Lu | Y | Zr | Nb | Pb | Th | U | Sc | Ti | V | Cr | Ni | Cu | Zn | Ga | Ref trace2 | METH trace2 | Light csv | Halogen csv | other major csv | other lile csv | other ree csv | other hfse csv | other hpe csv | other tm csv | other misc csv | |
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81ASh 2 | 57.700938488771 | -156.82375612141 | Shew, N. B. | 1981-01-01 | Blue Mtn | Ugashik C-3, Blue Mountain | Very light gray (N 8), vesicular dacite porphyry. Major minerals are plagioclase (approximately An 63), biotite, hornblende, and quartz. Weakly flow foliated and contains phenocrysts of plagioclase, biotite, quartz, and rare hornblende in an aphanitic crystalline groundmass. Probably an extrusive dome. | 81ASh 2 | Lava | Whole-rock | 67.4 | 0.38 | 16.1 | 3.64 | 0.14 | 1.43 | 4.19 | 3.52 | 2.43 | 0.16 | 99.44 | 4092 | XRF | 3.81 | 0.18 | CO2=0.23; H2OP=0.23; H2OM=0.14 | XRF | 1000 | 1000 | 0 | 20 | 200 | 0 | 5 | 0 | 7 | 100 | 10 | 3 | 15 | 5 | < 5 | < 5 | 7 | 0 | 4092 | ES: Ba, Sr, Y, Zr, Sc, V, Cr, Fe, Co, Ni, Mo; AAS: Pb, Cu, Zn; |
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