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Rocks - Mineralogy

Rocks - Names

QuestionAnswer
Intermediate; feldspars, pyroxene, and/or hornblende Andesite
Plagioclase feldspar, olivine and pyroxene Basalt
Plagioclase feldspar, quartz, biotite, hornblende, and augite Dacite
Rhyolitic Obsidian
Andesitic to Rhyolitic Pumice
Quartz, feldspar, biotite, hornblende, with accessory magnetite Rhyolite
Usually similar to Basalt Scoria
Basalt to rhyolite Tuff
Feldspar, hornblende, biotite, and pyroxene Diorite
Feldspar, hornblende, biotite, and magnetite Gabbro
Quarts, feldspar, biotite, hornblende, and magnetite Granite
Quartz, feldspars, altered olivine, rare garnets, orthopyroxene, and chrome diopside Pegmatite
Olivine and pyroxene Peridotite
Typically basalt or rhyolite Porphyry
Amphiboles such as hornblende and actinolite; feldspar Amphibolite
Muscovite mica, chlorite; pyrite a frequent accessory Argillite Gneiss Greenstone Hornfels Marble Phyllite Quartzite Serpentine Shale Slate
Muscovite biotite, kyanite, and glaucophane varieties Schist
Large clasts in cement matrix Breccia Conglomerate
Silica Chert
Very fine Claystone
Carbon Coal
Clastic environment usually Concretions
Chemical deposition Coquina Limestone
Chemical Dolomite Phosphorite
Large quartz or feldspar clasts in cement matrix Sandstone
Fine–very fine Siltstone
Clastic Wacke /
Created by: frishanini
Popular Geography sets

 

 



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