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Geology 101

Igneous Rocks

QuestionAnswer
Obsidian Extrusive, Glassy texture, pottassium feldspar and quartz present
Rhyolite Extrusive, Aphanitle texture, potassium feldspar quartz and Biotite present
Pumice Extrusive, Vesicular texture, potassium feldspar and plagioclase feldspar present
Volcanic Tuff Extrusive, Fragmental texture, potassium feldspar plagioclase feldspar and amphibole present
Andesite Porphyry Extrusive and Intrusive, Porphyritic texture, plagioclase feldspar, pyroxen, and amphibole present
Diorite Intrusive, Phaneritic texture, pyroxene quartz and plagioclase feldspar present
Gabbro Extrusive, Aphanitic texture, olivine, pyroxene, amphibole, plagioclase feldspar
Basalt Extrusive, Aphanitic texture, olivine, pyroxene, amphibole, and plagioclase feldspar present
Vesicular Basalt Extrusive, Vesicular texture, pyroxene, amphibole, and plagioclase feldspar present
Scoria Extrusive, Vesicular texture, pyroxene and amphibole present
Granite Intrusive, Phaneritic texture, quartz, potassiumm feldspar, plagioclase feldspar, and muscovite present
Granitic Pegmatitic Intrusive, Pegmatitic texture, amphibole, plagioclase feldspar, and quartz present
Created by: crescenti
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