rhyolite
[rahy-uh-lahyt]
- a fine-grained igneous rock rich in silica: the volcanic equivalent of granite.
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Origin of rhyolite
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Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for rhyolite
Historical Examples
Rhyolite and other forms of lava were last spread over the region.
Your National ParksEnos A. Mills
"Better in the little cemetery at Rhyolite," answered the other.
The Boy With the U. S. SurveyFrancis Rolt-Wheeler
Surface eruption of quartz-porphyry, rhyolite, and andesite.
It is not improbable that this was a quarry site; an outcrop of rhyolite is close at hand.
The Topanga Culture Final Report on Excavations, 1948A. E. Treganza
It then cools quickly and forms finely crystalline rocks of the rhyolite and basalt types.
The Economic Aspect of GeologyC. K. Leith
rhyolite
- a fine-grained igneous rock consisting of quartz, feldspars, and mica or amphibole. It is the volcanic equivalent of granite
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Word Origin
C19: rhyo- from Greek rhuax a stream of lava + lite
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
rhyolite
[rī′ə-līt′]
- A usually light-colored, fine-grained extrusive igneous rock that is compositionally similar to granite. It often includes flow lines formed during the extrusion.
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The American Heritage® Science Dictionary
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