The Yanshanian magmas in late phases, gave rise to sericitization and garnetization, and then Sn, Nb and Ta were enriched due to magmatic-authometasomatism.
燕山构造旋回控制的晚期岩浆，随着构造演化产生云英岩化、石榴子石化等岩浆自交代而锡铌钽矿物结晶富集成矿；
The Yanshanian magmas in late phases, gave rise to sericitization and garnetization, and then Sn, Nb and Ta were enriched due to magmatic-authometasomatism.
燕山构造旋回控制的晚期岩浆，随着构造演化产生云英岩化、石榴子石化等岩浆自交代而锡铌钽矿物结晶富集成矿；
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