Any of a group of chemically and physically related aluminum silicate minerals, common in igneous and metamorphic rocks, characteristically splitting into flexible sheets used in insulation and electrical equipment.

 
  • 云母化学上和物理上有联系的铝硅酸盐矿物群的总称,常见于火成岩和变质岩中,以易裂成柔软的薄片为特征,用于绝缘体及电气设备中
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