pegmatite

From Ancient Greek πήγνυμι (pḗgnumi, “to attach, join”) +‎ -ite

• IPA^(key): /ˈpɛɡmətaɪt/

pegmatite (countable and uncountable, plural pegmatites)

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

• feldspar
• granite
• quartz

pegmatite f (plural pegmatites)

1. pegmatite

• “pegmatite”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012.

pegmatite f (plural pegmatiti)

1. (geology) pegmatite