Illustrated Volcano Glossary

A B C D E F H L M O P R S T V Entire glossary
rhyolite

rhyolite

Volcanology
A type of highly viscous magma with high silica content; it is found as pumice (in airfall deposits or ignimbrites), lava or obsidian. Rhyolite is also the name given to the volcanic rock formed from rhyolitic magma.
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