felsite
a dense, fine-grained, igneous rock consisting typically of feldspar and quartz, both of which may appear as phenocrysts.
Origin of felsite
1Other words from felsite
- fel·sit·ic [fel-sit-ik], /fɛlˈsɪt ɪk/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024
How to use felsite in a sentence
As its name implies, it contains many caves in the felsitic conglomerate overlying the region.
Unknown Mexico, Volume 1 (of 2) | Carl LumholtzTrachyte from Hungary; felsitic paste with crystals of hornblende and sanidine, and a little magnetite.
Volcanoes: Past and Present | Edward HullFelsitic rocks are sometimes silicified and have their matrix replaced by granular aggregates of cloudy quartz.
The granitic mass of Priestlaw and other felsitic rocks have been intruded into these strata.
Felsitic lavas and tuffs occur in the Middle Devonian of Australia.
British Dictionary definitions for felsite
felstone (ˈfɛlˌstəʊn)
/ (ˈfɛlsaɪt) /
any fine-grained igneous rock consisting essentially of quartz and feldspar
Origin of felsite
1Derived forms of felsite
- felsitic (fɛlˈsɪtɪk), adjective
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
Scientific definitions for felsite
[ fĕl′sīt′ ]
A fine-grained, light-colored igneous rock, consisting mainly of feldspar and quartz.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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