germanite

例句：

1. 1.The mineral was discovered in Germany during the 19th century.
   这种矿物是在19世纪在德国被发现的。
2. 2.The Germanic rock is a valuable resource for metallurgy.
   这种岩石是冶金业的重要资源。
3. 3. Germanic rocks are often used as building materials due to their durability and strength.
   由于其耐用性和强度，德国石常被用作建筑材料。