polyarsenite

例句：

1. 1. The mineral is used in the production of fertilizers and pesticides.
   这种矿物用于生产肥料和农药。
2. 2.Polyarsenite is a rare earth element that can be found in small amounts in some rocks.
   多砷化物是一种稀有元素，可以在一些岩石中以少量存在。
3. 3. The polyarsenite crystals are transparent and have a beautiful luster.
   多砷化物的晶体透明且具有美丽的光泽。