leptonematite

例句：

1. 1.The mineralogist studied the crystal structure of leptonematite.
   矿物学家研究了地层中的石英石的晶体结构。
2. 2. The mine was discovered in a remote area where leptonematite is abundant.
   这个矿井在一个石英石丰富的偏远地区被发现。
3. 3. The leptonematite has been used as a building material for centuries.
   这种石英石被用作建筑材料几个世纪了。