Abstract:Many mineralized spots of gold and copper have been found in alkaline rock mass and its surrounding, which shows that ore-forming geological condition is superior. The research shows that the formation and distribution of gold and copper deposits are closely related to the Hongshan rock mass. The gold mineralization is mainly distributed in the volcanic tuff on the north side of the rock mass, while copper mineralization is widely distributed, but mainly distributed in the central area of the rock mass. Due to the degree of erosion of rock mass is less studied, The weather denudation degree of main part of copper-gold mineralization which located at the top or above of the rock mass is not clear. Deep prospecting potential of copper-gold mineralization also not clear and needs to analyze. According to the ‘cover layer’ thickness restoration method of the rock mass, relative uplift denudation degree identification method, planation surface method and apatite fission track method, the conclusions of different discrimination methods is basically consistent. the study results showed that the denudation degree of central region of Hongshan rock mass is the largest, about 2km. The degree of denudation decreases gradually along both sides of the rock mass. Based on the above analysis, the prospecting direction of the copper and gold deposits is given. The favorable prospecting area of gold mineralization distribute in the volcanic tufu which lie in the south side of the rock mass, and the copper mineralization in the central part of the rock mass is not optimistic.