noun🔗Share伟晶岩 A 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. "地质学学生辨认出样品中大的、相互交错的长石和石英晶体，确认这是一块伟晶岩。geologymaterialmineralscienceChat with AIVocabulary GamePractice Reading
