calc-schist

例句：

1. 1. The doctor prescribed a medication to treat the patient's condition.
   医生开了一种药物来治疗病人的病情。
2. 2.The mineral is commonly found in rocks and soil.
   这种矿物通常在岩石和土壤中被发现。
3. 3.The calcium carbonate crystals are used in various industries for their hardness and durability.
   碳酸钙晶体因其硬度和耐久性而被用于各种行业。