The Jiawula and Qagan Bulagen Ag-Pb-Zn deposit is located in Xin Barag Right Banner, Inner Mongolia. The two deposits lie in the same NW-trending structural belt and are only 6 km apart, which were discovered in 1985 and 1986 respectively. Exploration proved that the Jiawula deposit has Ag ore reserves of more than 1,000 tons, Pb-Zn ore reserves of 800,000 tons and Cu ore reserves of 45,000 tons; while the Qagan Bulagen deposit has Ag ore reserves of more then 500 tons, and Pb-Zn ore reserves of 80,000 tons.
The average grade of silver of the Jiawula deposit is higher than 50 g/t. Silver orebodies with grades of 170~200 g/t provide about 50% of the reserves of this deposit.
In China, silver mineralization had been extensively developed during a long geological history from the Proterozoic to Mesozoic, especially in the Yanshanian, though silver deposits of industrial value formed in the Archean and Cenozoic have not been discovered so far. Both the number and scale of the silver deposits formed in the Yanshanian are larger than those of other periods.
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