noun🔗Share페그마타이트A 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. "지질학 학생은 표본에서 장석과 석영의 크고 맞물린 결정을 확인하여 그것이 페그마타이트 조각임을 확인했습니다.geologymaterialmineralscienceChat with AIVocabulary GamePractice Reading
