felspar

American  

[fel-spahr] / ˈfɛlˌspɑr /

noun

1. feldspar.

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felspar British  

/ fɛlˈspæθɪk, ˈfɛlˌspɑː /

noun

1. a variant (esp Brit) of feldspar

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Other Word Forms

• felspathic adjective

Etymology

Origin of felspar

< German Fels rock + spar ³, by false etymological analysis

Example Sentences

Their felspar ranges from oligoclase to andesite and labradorite, and is often very zonal; sanidine occurs also in some dacites, and when abundant gives rise to rocks which form transitions to the rhyolites.

From Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 8 "Cube" to "Daguerre, Louis" by Various

The Chinese and Japanese, with which may be assimilated the German and French, all of them made of kaolin and felspar, sometimes with an addition of quartz.

From British Manufacturing Industries Pottery, Glass and Silicates, Furniture and Woodwork. by Arnoux, L.

Blackish grey, fine grained, gneissose granite, composed of quartz, white felspar, and large quantities of fine grains and flakes of hornblende, passing into black mica.

From In the Arctic Seas A Narrative of the Discovery of the Fate of Sir John Franklin and his Companions by McClintock, Francis Leopold

When the felspar assumed the appearance of a slaty claystone, which it did towards the base of the mountains on the banks of the river, we observed no copper in it.

From A Journey from Prince of Wales's Fort in Hudson's Bay to the Northern Ocean in the Years 1769, 1770, 1771, 1772 New Edition with Introduction, Notes, and Illustrations by Tyrrell, J. B.

The felspar is pearly, white or pink, with smooth cleaved surfaces; the quartz is usually transparent, glassy with rough irregular fractures; the micas appear as shining black or white flakes.

From Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 3 "Gordon, Lord George" to "Grasses" by Various