Pegmatite Definition

pĕgmə-tīt
noun
A light-colored, coarsegrained, intrusive igneous rock, usually granitic, containing large crystals of quartz, feldspar, and mica, and sometimes rare minerals: typically found in fissures of other igneous rocks.
Webster's New World
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Other Word Forms of Pegmatite

Noun

Singular:
pegmatite
Plural:
pegmatites

Origin of Pegmatite

  • Greek pēgma pēgmat- something fastened together (from pēgnunai to fasten pag- in Indo-European roots) –ite

    From American Heritage Dictionary of the English Language, 5th Edition

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