pegmatite
pegmatite · pegmatites
A coarsely crystalline igneous or plutonic rock composed primarily of feldspar and…A coarsely crystalline igneous or plutonic rock composed primarily of feldspar and quartz, normally with muscovite and/or biotite mica.
/ˈpɛɡmətaɪt/
Meaning
1 senses(countable, uncountable)A coarsely crystalline igneous or plutonic rock composed primarily of feldspar and quartz, normally with muscovite and/or biotite mica.
More definitions
- a form of igneous rock consisting of extremely coarse granite resulting from the crystallization of magma rich in rare elements
Origin
From Ancient Greek πήγνυμι (pḗgnumi, “to attach, join”) + -iteFrom Ancient Greek πήγνυμι (pḗgnumi, “to attach, join”) + -ite
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Forms
plural: pegmatites| Singular | pegmatite |
|---|---|
| Plural | pegmatites |
regular
Word family
7 related wordsLessons for this word
1 lessons- A1Countable and uncountable nouns — Because it can be uncountable