西藏浦桑果铜多金属矿床地质特征与成矿机理

The Geological Characteristics of Polymetallic Deposit in Pusangguo Tibet Pu Cu Pb Zn Metallogenic Mechanism

西藏浦桑果矿床位于冈底斯成矿带,是大型、高品位、铜铅锌多金属矿床,是冈底斯成矿带上典型矿床,矿区出露的岩层有古近系地层为典宗组(E1d),白垩系地层为塔克那组(K1t),为平行不整合接触,矿区内发现两条断裂F1和F2,花岗岩侵入典宗组和塔克那组中的碳酸盐地层中,形成矽卡岩型矿床。根据矿床地质特征,矿床经历多次成矿作用,得出矿床为矽卡岩铜铅锌多金属热液型矿床。

Tibet Pusangguo deposit is located in Gangdese metallogenic belt, It is a large, high grade, copper lead and zinc polymetallic deposit, it＇s a typical deposit in Gangdese metallogenic belt. The rock strata in the mine area are of the ancient Near system strata as the typical cases. The Cretaceous strata are the Tucker group, which is a parallel unconformity contact, and found that the two F2 and F1in the mining area, the granite intrusion and the carbonate strata in the Tucker group, and the formation of the silicon card type deposit, in the role of tectonic movement and magmatic activity, has experienced many mineralization, and finally the formation of a silicon card type copper lead zinc polymetallic deposit.