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Text Description: Hornblende-clinopyroxene-orthopyroxene-biotite porphyritic dacite. Phenocrysts of normal and oscillatory zoned plagioclase (27%), hornblende (3%), clinopyroxene (2%), orthopyroxene (1%), and biotite (2%) in fine-grained groundmass (59%) of felsic material and pale-brown glass. Trace of olivine and metallic oxides. 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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79AM44 | 57.713 | -156.426 | Miller, T. P. | 1979-01-01 | Ugashik caldera | Ugashik caldera, pre-caldera andesite and dacite dome breccias, west caldera/flank rim | Hornblende-clinopyroxene-orthopyroxene-biotite porphyritic dacite. Phenocrysts of normal and oscillatory zoned plagioclase (27%), hornblende (3%), clinopyroxene (2%), orthopyroxene (1%), and biotite (2%) in fine-grained groundmass (59%) of felsic material and pale-brown glass. Trace of olivine and metallic oxides. | 79AM44 | Lava | Whole-rock | 61.5 | 0.54 | 16.7 | 5.3 | 0.14 | 2.7 | 6 | 3.6 | 1.6 | 0.11 | 3583 | XRF | 3 | 2.3 | CO2=0.76; F=0.03; H2OP=0.55; H2OM=0.43 | XRF: CO2, F; RAPIDA: H2OP, H2OM; | 48 | 589 | 407 | 22 | 38 | 18 | 153 | 11 | 31 | 10 | 20 | 58 | 3583 | XRF-EDS |
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