pegmatite

== English == === Etymology === From Ancient Greek πήγνυμι (pḗgnumi, “to attach, join”) +‎ -ite === Pronunciation === IPA(key): /ˈpɛɡmətaɪt/ === Noun === pegmatite (countable and uncountable, plural pegmatites) A coarsely crystalline igneous or plutonic rock composed primarily of feldspar and quartz, normally with muscovite and/or biotite mica. ==== Derived terms ==== ==== See also ==== feldspar granite quartz == French == === Noun === pegmatite f (plural pegmatites) pegmatite === Further reading === “pegmatite”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012 == Italian == === Noun === pegmatite f (plural pegmatiti) (geology) pegmatite