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Text Description: Block from brecciated material at Site 12. This unit is cut by a dike (94SJP11A). Fine grained, vesicular, hypocrystalline, intersertal, seriate to glomeroporphyritic with a matrix of brown glass, opaque, plagioclase, orthopyroxene, clinopyroxene and minor calcite. Plagioclase phenocrysts (An30-An64) are up to 7.5 mm and frequently have sieve textured cores, normal zoning, and overgrowth rims; oscillatory zoning is less common. Olivine phenocrysts are up to 0.5 mm and some have a rim of small orthopyroxene crystals. Orthopyroxene is up to 0.6 mm and some have clinopyroxene rims. 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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94SJP11B | 62.28850246 | -143.267 | Preece, S. J. | 1994-00-00 | Skookum Creek | Nabesna B-5, T6N, R12E, S19 | Block from brecciated material at Site 12. This unit is cut by a dike (94SJP11A). Fine grained, vesicular, hypocrystalline, intersertal, seriate to glomeroporphyritic with a matrix of brown glass, opaque, plagioclase, orthopyroxene, clinopyroxene and minor calcite. Plagioclase phenocrysts (An30-An64) are up to 7.5 mm and frequently have sieve textured cores, normal zoning, and overgrowth rims; oscillatory zoning is less common. Olivine phenocrysts are up to 0.5 mm and some have a rim of small orthopyroxene crystals. Orthopyroxene is up to 0.6 mm and some have clinopyroxene rims. | 94SJP11B | Lava | Whole-rock | 56 | 0.76 | 18.95 | 6.19 | 0.1 | 4.63 | 8.06 | 3.6 | 0.96 | 0.24 | 99.78 | 55 | DCP | 6.81 | 6.19 | LOI=0.47 | DCP | 16.9 | 347 | 656 | 13 | 69 | 2.5 | 2.2 | < 0.5 | 18.4 | 165 | 71 | 62 | 64 | 62 | 18.7 | 55 | XRF: Rb, Zr, Nb, Th, U, Ni, Ga; DCP: Ba, Sc, V; MX: Sr, Y, Cr, Cu, Zn; |
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