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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:

Other hard rocks such as chert, quartzite, felsite, granite, sandstone and volcanic rocks very frequently are largely represented in gravels, while coal, limestone and shale are far less common.

From Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 4 "Grasshopper" to "Greek Language" 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

These rocks approach towards true granites in one direction, and through quartz-porphyry and felsite to rhyolite in another—probably depending upon the conditions of cooling and consolidation.

From Volcanoes: Past and Present by Edward Hull

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

Rock of many kinds, including serpentine, schist, felsite, jadeite, diorite, and nephrite, were used; and saws of flint or chalcedony, some toothed on one side only, others on both, are of frequent occurrence.

From Manners and Monuments of Prehistoric Peoples by N. D'Anvers

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