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felsite

American  
[fel-sahyt] / ˈfɛl saɪt /

noun

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


felsite British  
/ ˈfɛlsaɪt /

noun

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

"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

felsite Scientific  
/ fĕl′sīt′ /
  1. A fine-grained, light-colored igneous rock, consisting mainly of feldspar and quartz.


Other Word Forms


Etymology

Origin of felsite

First recorded in 1785–95; fels(par) + -ite 1


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

In the south of the island there are sills and dykes of felsite, quartz-porphyry, rhyolite, trachyte and pitchstone.

From Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 6 "Armour Plates" to "Arundel, Earls of" by Various

The building material here is a close-grained felsite, and huge fragments of it have been used in the construction of the parapets.

From Unknown Mexico, Volume 1 (of 2) A Record of Five Years' Exploration Among the Tribes of the Western Sierra Madre; In the Tierra Caliente of Tepic and Jalisco; and Among the Tarascos of Michoacan by Carl Lumholtz

The lode is a large irregular one of pure arsenical pyrites, existing in a felsite dike near the sea coast.

From Scientific American Supplement, No. 841, February 13, 1892 by Various

The blocks were lava and hard felsite, measuring one and a half to three feet.

From Unknown Mexico, Volume 1 (of 2) A Record of Five Years' Exploration Among the Tribes of the Western Sierra Madre; In the Tierra Caliente of Tepic and Jalisco; and Among the Tarascos of Michoacan by Carl Lumholtz

The rough felsite blocks of which they were composed were surprisingly large, considering the diminutive size of the cabins.

From Unknown Mexico, Volume 1 (of 2) A Record of Five Years' Exploration Among the Tribes of the Western Sierra Madre; In the Tierra Caliente of Tepic and Jalisco; and Among the Tarascos of Michoacan by Carl Lumholtz

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