calmagite

例句：

1. 1. The mineral calmagite is used in the production of glass.
   这种矿物用于生产玻璃。
2. 2. Calmagite is a common mineral found in many river sediments.
   钙镁石是一种常见的矿物，存在于许多河流沉积物中。
3. 3. The calmagite deposits are rich in calcium and magnesium.
   这些钙镁石矿床富含钙和镁。