硅酸钙岩矿

例句：

1. 1. The mineral deposit is located inthe northern part of the country.
   这个矿藏位于该国北部。
2. 2. The geologist discovereda new type of mineral during his research.
   地质学家在研究过程中发现了一种新的矿物。
3. 3.The mineral was used as a building materialfor centuries.
   这种矿物被用作建筑材料几个世纪了。