Detail
Another specimen
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| RHYOLITE
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Detail Another specimen Return to Classification; pdf version
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Typical Minerals Minerals too small to identify (except phenocrysts). Composition will be from bottom of Bowen's Reaction series (i.e. felsic). |
Description
A fine grained (aphanitic) igneous rock, white, light gray, pink, to dark in color. Phenocrysts (large visible crystals) are often present Since color is such a poor indicator of rock identification in most cases, darker rhyolites can be confused with lighter andesites. Felsite is the general term for an unidentifiable, fine grained, generally middle colored rock. |
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Tectonic Association
Rhyolite, as with all felsic rocks, is found on continents, ejected from volcanoes. Tectonic Cross Section - pdf version
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| Last Update: 9/29/00 | e-mail: (Fichtels@jmu.edu) |