leptynite

例句：

1. 1. The mine produces a significant amount of leptynite.
   该矿生产大量的轻石。
2. 2. Leptynite is used in the production of various alloys.
   轻石用于生产各种合金。
3. 3.The mining operation has been causing environmental concerns due to the release of heavy metals from the ore.
   由于矿石中的重金属释放，采矿作业引起了环境担忧。