PEGMATITE

pegmatite

(noun) a form of igneous rock consisting of extremely coarse granite resulting from the crystallization of magma rich in rare elements

Source: WordNet® 3.1


Noun

pegmatite (plural pegmatites)

A coarsely crystalline igneous or plutonic rock composed primarily of feldspar and quartz, normally with muscovite and/or biotite mica.

Source: Wiktionary


Peg"ma*tite, n. Etym: [From Gr. pegmatite. See Pegm.] (Min.) (a) Graphic granite. See under Granite. (b) More generally, a coarse granite occurring as vein material in other rocks.

Source: Webster’s Unabridged Dictionary 1913 Edition



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Word of the Day

22 April 2025

BRIGHT

(adjective) made smooth and bright by or as if by rubbing; reflecting a sheen or glow; “bright silver candlesticks”; “a burnished brass knocker”; “she brushed her hair until it fell in lustrous auburn waves”; “rows of shining glasses”; “shiny black patents”


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