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.
前者以黑云母、榍石为典型含锡矿物，它们在
集阶段，经热液蚀变作用，导致锡的淋
和结晶集作用；
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.
前者以黑云母、榍石为典型含锡矿物，它们在集阶段，经热液蚀变作用，导致锡的淋和结晶集作用；
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