The primary ore of tin, most sources of Cassiterite today are not primary deposits but alluvial deposits containing weathered grains.

• 锡原生矿以及今天我们所见到的锡石的大多数出产地其实都不是她的原生矿藏，真正的锡石原生矿是那些含有风蚀晶粒的冲积层矿床。