云南金顶铅锌矿床成因研究

A STUDY ON GENESIS OF JINDING Pb-Zn DEPOSIT IN YUNNAN PROVINCE

Jinding Pb-Zn deposit is geotectonically located in the contact zone of China Plate and India Plate.In the mine area took place Mesozoic-Cenozoic fault basin, arch, nappe and fault.Such concentration of tectonics is favourable for mineralization in the area.The depost is doublely controled by tectonics and proper lithologies on both sides of the nappe structure.It is characterized by endogenic and epigenic mineralization.Sulfur of sulfide is mainly derived from reduction of sulfate in marine basin by bateria.Maybe, some comes from the hypogene.Pb isotope of galena can be divided into crust lead and mantle lead.Geological and geochemical characteristics show that Jinding deposit is a multiple genesis, super-sized Pb-Zn deposit formed by synsedimentation and later reformation.