castanite

例句：

1. 1.The cassiterite crystals are rare and valuable.
   卡斯泰恩石晶体稀有且珍贵。
2. 2.This mineral is often found in the mountains, where it can be used for jewelry.
   这种矿物常在山区发现，可用于制作珠宝。
3. 3. Castaneous trees are known for their durability and resistance to disease.
   卡斯泰诺斯树因其耐久性和抗病能力而闻名。