felsite

[ fel-sahyt ]

/ ˈfɛl saɪt /

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noun

a dense, fine-grained, igneous rock consisting typically of feldspar and quartz, both of which may appear as phenocrysts.

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Origin of felsite

First recorded in 1785–95; fels(par) + -ite¹

OTHER WORDS FROM felsite

fel·sit·ic

[fel-sit-ik], /fɛlˈsɪt ɪk/, adjective

Words nearby felsite

felonious, felonry, felony, felony murder, felsic, felsite, felspar, felspathic, felt, felting, felt marker

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use felsite in a sentence

The stones themselves were felsite, which abounds in the locality.
Unknown Mexico, Volume 1 (of 2)|Carl Lumholtz
The rough felsite blocks of which they were composed were surprisingly large, considering the diminutive size of the cabins.
Unknown Mexico, Volume 1 (of 2)|Carl Lumholtz
We found, besides, a few cores of felsite and some shapeless flakes and several fragments of large metates.
Unknown Mexico, Volume 1 (of 2)|Carl Lumholtz
The blocks were lava and hard felsite, measuring one and a half to three feet.
Unknown Mexico, Volume 1 (of 2)|Carl Lumholtz

Still later, dolerite sills and sheets and dikes of granophyre and quartz felsite followed in the same region.
Encyclopaedia Britannica, 11th Edition, Volume 14, Slice 6|Various

British Dictionary definitions for felsite

felsite

felstone (ˈfɛlˌstəʊn)

/ (ˈfɛlsaɪt) /

noun

any fine-grained igneous rock consisting essentially of quartz and feldspar

Derived forms of felsite

felsitic (fɛlˈsɪtɪk), adjective

Word Origin for felsite

C18: fels(par) + -ite 1

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

felsite

[ fĕl′sīt′ ]

A fine-grained, light-colored igneous rock, consisting mainly of feldspar and quartz.