The Research To Characteristics And Metallogenic Regularity Of Wangmantian Lead-zinc Deposit In Shexian,Anhui Province

This thesis is based on the detailed survey project of Wangmantian lead-zinc deposit in Shexian, Anhui province, mainly to Wangmantian lead-zinc deposit as the research object, the integrated use of the general geology, mineralogy, petrology, structural geology, mineral exploration and mineralography and other disciplines, it uses the metallogenic study and find new theory and method of mine geology, in this paper, the ultimate purpose of research is to explore the characteristics and metallogenic regularities of lead-zinc deposit.The study area of Wangmantian lead-zinc deposit is located in the southeast part of the Yangtze plate, which belongs to the north of the Yangtze River, the zone formation is given priority to with shallow metamorphic rock. The author collected previous geological data and access to the relevant literature of southern Anhui province, into the wild field exploration to work, understanding of stratum, structure, magmatic rocks, wall rock alteration and physicochemical exploration anomaly and all kinds of metal mineralization.This thesis is mainly to study the lead-zinc deposit, after a field geological mapping work, through drilling and trenching work to determine the memory of the study area in two typical lead-zinc mineralized bodies, namely stockwork quartz vein type lead-zinc mineralization body and silicified broken type lead-zinc mineralization body, the ore-bearing strata of the Middle Proterozoic Niuwu group(Pt2n), ore-bearing rock series mainly as a set of shallow metamorphic rock.Through sampling, drilling and grinding surface, observation of hand specimen characteristics and the microscopic features of microscopic characteristics, find out the composition and structure of lead-zinc ore structure, and according to the characteristics of typical mineral, divided the lead-zinc metallogenic period of time, that is sedimentary diagenetic stage, hydrothermal mineralization stage and supergene oxidation period.In order to analysis the ore controlling factors of lead-zinc ore bodies, respectively from three factors, the strata, structure and magmatic rock to elaborate, obviously lead-zinc ore body is controlled by the structure of the study area, mainly to Wangmantian ductile fracture deformation zone and Xucun-Jingde fracture fracture, lead-zinc ore bodies occur in the split tectonic fracture zone, ductile shear belt, interlayer structure and fractures, so the fault is not only the ore-controlling structure but also the ore-bearing structure.Through the analysis of the ore controlling factors and the ore genesis of lead-zinc deposit, thus summed up the deposit metallogenic time and space regularity of the deposit.