角闪石

例句：

1. 1.The mineral is found in many rocks,especially in the mountains.
   这种矿物在许多岩石中都有发现，尤其是在山区。
2. 2. Calcium mica is used as a fireproofing material.
   钙质滑石被用作防火材料。
3. 3. The rock contains trace amounts ofiron and manganese.
   这种岩石含有微量的铁和锰。