Metallogenic Process of the Baiyinhaer Gold Deposit

The Baiyinhaer gold deposit is a typical gold-bearing quartz veins type and gold-bearing altered rock type composite gold deposit in polymetallic ore belt of the northern margin of North China Craton.On the basis of high-resolution geological mapping,measurement and study of tectonics,analysis of geochemistry of Au,As,Ag,Cu,Pb,Zn,Bi and other elements.We consider that the distribution of the ore-veins of the Baiyinhaer gold deposit is controlled by the fracture zones of the NE,NNE and EW strike.The mineralization of the Baiyinhaer gold deposit is a product of superposition of gold multi-stated mineralization,which is bound up with the intermediate-acid intrusive rocks in the area.The ore-forming materials of quartz veins type of gold-bearing ore mainly come from the Group Rocks of the Middle and Upper Proterozoic Erathem,while the ore-forming materials of altered rock type of gold-bearing ore mainly come from the quartz-diorite and plagiogranite formed in late Variscan Age in the area.