calclacite

例句：

1. 1. The calclacite deposits are found in the northern part of the country.
   这个国家北部有钙石矿床。
2. 2.The calclacite is used as a building material due to its strength and durability.
   由于其强度和耐用性，钙石被用作建筑材料。
3. 3. The calclacite was formed by the chemical weathering of limestone over millions of years.
   数百万年的时间里，石灰岩经过化学风化形成了钙石。