Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A fine-grained, light-colored igneous rock, composed chiefly of feldspar and quartz.
from The Century Dictionary.
- noun A compact, very hard rock, almost flinty in texture. made up of quartz and orthoclase feldspar intimately mixed.
from the GNU version of the Collaborative International Dictionary of English.
- noun (Min.) A finegrained rock, flintlike in fracture, consisting essentially of orthoclase feldspar with occasional grains of quartz.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun mineralogy A fine grained
volcanic extrusive rock, generally light in color, composed offelsic minerals . - noun geology Any light-colored
volcanic rock whose truemineralogy is not yet determined.
Etymologies
from The American Heritage® Dictionary of the English Language, 4th Edition
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Examples
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The reason I wanted to see this beach is because the book said that if, conditions were right, the sound of the waves hitting this unique shoreline of flat, shingle-like “pink rhyolite and felsite bedrock” makes a tinkling, bell-like sound.
Day in the Life of an Idiot lyda222 2010
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It exists in a felsite dyke immediately on the coast.
Getting Gold: a practical treatise for prospectors, miners and students
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The lode is a large irregular one of pure arsenical pyrites, existing in a felsite dike near the sea coast.
Scientific American Supplement, No. 841, February 13, 1892 Various
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Trachyte — A variety of felsite superficially closely resembling rhyolite.
Tseh So, a Small House Ruin, Chaco Canyon, New Mexico : 1937
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The radium-bearing minerals are torbernite and autunite (hydrous copper-uranium and calcium-uranium phosphates), and are found in dark felsite dikes near their intersections with east-west gold-silver-quartz veins.
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We found, besides, a few cores of felsite and some shapeless flakes and several fragments of large metates.
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The rough felsite blocks of which they were composed were surprisingly large, considering the diminutive size of the cabins.
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The designs were rudely pecked on the moderately smooth felsite cliffs on a nearly perpendicular wall in the foot-hills, about forty feet above the bed of the arroyo, or gulch.
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The blocks were lava and hard felsite, measuring one and a half to three feet.
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The stones themselves were felsite, which abounds in the locality.
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