Definition of pegmatites Pegmatites
We found 3 definitions of pegmatites from 2 different sources.
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What does pegmatites mean?
Wiktionary 
- pegmatites (Noun)
Plural of pegmatite.
Part of speech
🔤- pegmatites, noun, plural of pegmatite.
WordNet
NounPlural: pegmatites |
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| pegmatite - a form of igneous rock consisting of extremely coarse granite resulting from the crystallization of magma rich in rare elements | ||
| igneous rock rock formed by the solidification of molten magma | ||
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Wiktionary
- pegmatite (Noun)
A coarsely crystalline igneous or plutonic rock composed primarily of feldspar and quartz, normally with muscovite and/or biotite mica. Often contains other minerals, which may be of economic importance. Pegmatite is chemically identical to granite, but has a much coarser crystal structure. Common colors are gray, white, and pink. Pegmatite is quarried for decorative stone and as a source of beryllium, columbium and tantalum when these are present. Gemstones of the quartz/silicate family may also be found in pegmatites.
Webster DictionaryWebster's Unabridged Dictionary 📘
- pegmatite (n.)
Graphic granite. See under Granite. - pegmatite (n.)
More generally, a coarse granite occurring as vein material in other rocks.
Chambers DictionaryChamber's 20th Century Dictionary 📕
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pegmatite
peg′ma-tīt, n. coarsely crystallised granite.—adj. Pegmatit′ic
Part of speech
🔤- pegmatite, noun, singular of pegmatites.
