noun🔗SharePegmatitaA coarsely crystalline igneous or plutonic rock composed primarily of feldspar and quartz, normally with muscovite and/or biotite mica."The geology student identified the large, interlocking crystals of feldspar and quartz in the sample, confirming it was a piece of pegmatite. "El estudiante de geología identificó los grandes cristales entrelazados de feldespato y cuarzo en la muestra, confirmando que era un trozo de pegmatita.geologymaterialmineralscienceChat with AIVocabulary GamePractice Reading
