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Text Description: Blocky outcrop that may be a remnant of a blocky flow. Overlies bomb lahar unit 94SJP113C. Fine grained, vesicular, holocrystalline, porphyritic with a matrix of mesostasis, plagioclase, and opaque. Plagioclase phenocrysts (An36-AN59) are up to 1.0 mm. Olivine phenocrysts are up to 0.75 mm and the grains are altered and have black coronas. Clinopyroxene phenocrysts are up to 0.5 mm and are often rounded. One orthopyroxene phenocryst, 0.1 mm, was observed. 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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94SJP113A | 62.25987964 | -143.4549094 | Preece, S. J. | 1994-00-00 | Skookum Creek | Nabesna B-5, T6N, R11E, S31 | Blocky outcrop that may be a remnant of a blocky flow. Overlies bomb lahar unit 94SJP113C. Fine grained, vesicular, holocrystalline, porphyritic with a matrix of mesostasis, plagioclase, and opaque. Plagioclase phenocrysts (An36-AN59) are up to 1.0 mm. Olivine phenocrysts are up to 0.75 mm and the grains are altered and have black coronas. Clinopyroxene phenocrysts are up to 0.5 mm and are often rounded. One orthopyroxene phenocryst, 0.1 mm, was observed. | 94SJP113A | Lava | Whole-rock | 56.64 | 1.04 | 17.62 | 6.56 | 0.12 | 4.95 | 7.64 | 3.92 | 1.04 | 0.29 | 100.46 | 55 | DCP | 7.27 | 6.56 | LOI=0.2 | DCP | 18.5 | 412 | 554 | 20 | 134 | 4.4 | 3.1 | 2 | 20.9 | 162 | 90 | 67 | 43 | 71 | 17.1 | 55 | XRF: Rb, Zr, Nb, Th, U, Ni, Ga; DCP: Ba, Sc, V; MX: Sr, Y, Cr, Cu, Zn; |
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