Analysis on the Metallogenic Conditions of Dongchenggongma Gold Mine in Qinghai Province

Dongchenggongma gold mine was discovered during an anomaly verification work carried out by Geochemical Exploration Institute,Qinghai Bureau of Geo-Exploration and Mineral Development,but it has been already closed due to some external causes after geological survey.In this paper,we analyze the metallogenic conditions by summarizing geological,geophysical,geochemical and remote sensing characteristics.The result shows that Dongchenggongma gold deposit is a medium sized gold deposit recently found in a Au-Sb mineralization belt located in the North of Bayan Har orogenic belt in Qinghai Province,and the ore-bearing strata is mainly lower Early Triassic Changma River Group,NW-SE trending faults are the main leading ore structure,porphyaceous adamellite of Yanshan stage is closely related to mineralization.The research shows that there has a good ore-forming geological background and prospecting marks,and 18 gold veins have been found in the area,it shows a good prospect for gold deposit.