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Text Description: 60 cm diameter radially fractured block lying on surface at crater rim. Porphyritic andesite. ~40% phenocrysts of plagioclase (up to 1.0 x 0.5 mm), pyroxene (0.5 x 0.4 mm), and opaque Fe-Ti oxides in a matrix of devitrified glass and subordinate microphenocrysts and microlites. Pl:px ~ 3:2. About half of the plagioclase phenocrysts are extensively sieved, the rest are nearly free of disequilibrium textures. 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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91CND17 | 58.85241 | -153.5438 | Nye, C. J. | 1991-07-21 | Douglas | 60 cm diameter radially fractured block lying on surface at crater rim. Porphyritic andesite. ~40% phenocrysts of plagioclase (up to 1.0 x 0.5 mm), pyroxene (0.5 x 0.4 mm), and opaque Fe-Ti oxides in a matrix of devitrified glass and subordinate microphenocrysts and microlites. Pl:px ~ 3:2. About half of the plagioclase phenocrysts are extensively sieved, the rest are nearly free of disequilibrium textures. | 91CND17 | Lava | Whole-rock | 59.52 | 0.623 | 17.83 | 0.109 | 4.57 | 6.86 | 3.36 | 0.882 | 0.089 | 99.72 | 13291 | XRF | 6.16 | 1.37589 | 29 | 303 | 261 | 14 | 13 | 2.13606 | 9.63789 | 2.84305 | 0.86586 | 3.31645 | 0.60078 | 3.86023 | 0.8336 | 2.2778 | 0.34363 | 2.25905 | 0.35267 | 23 | 101 | 1.6 | 2.6322 | 0.11854 | 4 | 4 | 1.2495 | 23 | 207 | 106 | 46 | 58 | 66 | 20 | 13291 | ICPMS: Cs, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Hf, Ta, U; XRF: Rb, Ba, Sr, La, Ce, Y, Zr, Nb, Pb, Th, Sc, V, Cr, Ni, Cu, Zn, Ga; |
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