kyanite schist

例句：

1. 1.The kyanite schist is atype of metamorphic rock that has beenformed under high pressure and temperature.
   云母片岩是一种在高压和高温下形成的变质岩石。
2. 2. Kyanite schistis often used as a building material dueto its durability and resistance to fire.
   由于其耐用性和防火性能，云母片岩常被用作建筑材料。
3. 3. In the miningindustry, kyanite schistis a valuable resource for producing high-quality gemstones.
   在矿业中，云母片岩是生产高质量宝石的宝贵资源。