The Sn granites are characterized by biotite and titanite as Sn-bearing minerals, which suffured hydrothermal alteration, leading to tin leaching and subsequent crystallization of cassiterite.
前者
黑云母、榍石为典型含锡矿物，它们在流体富集阶段，
蚀变作用，导致锡的淋
和结晶富集作用；
The Sn granites are characterized by biotite and titanite as Sn-bearing minerals, which suffured hydrothermal alteration, leading to tin leaching and subsequent crystallization of cassiterite.
前者黑云母、榍石为典型含锡矿物，它们在流体富集阶段，蚀变作用，导致锡的淋和结晶富集作用；
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