A prospecting model for Pb-Zn deposits in Western Hunan Province

Da-naopo lead-zinc deposit is located in the transition zone between the southeastern margin of the Yangtze block and the xuefeng (jiangnan) orogenic belt. Orebodies of Da-naopo lead-zinc deposit are mainly layered and secondly vein-like in shape, and hosted within both the algal limestone of the third sub-member and the sand limestone of the fourth sub-member of the Lower Cambrian Qingxudong Formation. With the increase of exploration depth, how to improve the success rate of prospecting has been an urgent problem to solve. This paper summarizes the metallogenic model of the "HuaYuan type" Pb-Zn deposits. Based on previous research results and the characteristics of resistivity, polarizability and content of Pb and Zn, the prospecting model for Pb-Zn deposits has been established, and the rationality of the prospecting model has been verified by the exploration work in the Da-nao-po deposit. The prospecting model can provide a reference for exploration of Pb-Zn deposits in areas of western Hunan, western Hubei, and eastern Guizhou.