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Pegmatite
//ˈpɛɡmətaɪt// noun
Definitions
Noun
- 1 A coarsely crystalline igneous or plutonic rock composed primarily of feldspar and quartz, normally with muscovite and/or biotite mica. countable, uncountable
- 2 a form of igneous rock consisting of extremely coarse granite resulting from the crystallization of magma rich in rare elements wordnet
Etymology
From Ancient Greek πήγνυμι (pḗgnumi, “to attach, join”) + -ite
See also for "pegmatite"
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