lithophysal
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lithophysal — lith·o·phy·sal … English syllables
Rhyolite — This page is about a volcanic rock. For the ghost town see Rhyolite, Nevada, and for the satellite system, see Rhyolite/Aquacade. Rhyolite is an igneous, volcanic (extrusive) rock, of felsic (silicon rich) composition (typically >69% SiO2 mdash;… … Wikipedia
