安徽铜陵荷花山铅锌矿床地质特征与成矿规律

荷花山大型铅锌矿位于长江中下游成矿带铜陵矿集区，是该矿集区内最新类型的典型矿床。矿区出露一套以砂页岩、硅质岩、灰岩为主的沉积岩地层，由F1断层、F2断层、褶皱和朱村断陷盆地以及热液共同作用，使早—中三叠世灰岩中发育构造溶解垮塌角砾岩，矿体赋存于其中。通过沉积成矿、热液成矿和岩浆作用等成矿规律的分析，认为荷花山地区具有良好的成矿地质前景，荷花山铅锌矿床受晚期岩浆热液的影响，铅锌进一步富集。荷花山铅锌矿床与沉积作用和热液作用关系较密切，岩体侵入对荷花山矿床进行了破坏和改造，并形成少量的闪锌矿和方铅矿。荷花山矿床位于铜陵矿集区内，其成矿规律与矿集区其他矿床的成矿规律相比既有共性又有特性，其独特的成矿规律丰富了铜陵矿集区的成矿理论。

Geological characteristics and metallogeny of the Hehuashan lead-zinc deposit in Tongling, Anhui Province

Hehuashan large lead-zinc deposit is located in the Tongling ore-concentrated area of the metallogenic belt of the middle and lower reaches of the Yangtze River. It is a typical deposit of the latest type in this area. There is a set of sedimentary rock strata mainly composed of sand shale, siliceous rock and limestone in the mine area, which are formed by fault F1, fault F2, fold and Zhucun fault basin together with hydrothermal fluid, resulting in the structural dissolution of collapsed breccia in the early to middle Triassic limestone, and ore bodies occurred in the dissolution of them. Through the analysis of the metallogeny such as sedimentary mineralization, hydrothermal mineralization and magmatism, it is concluded that the Hehuashan area has a good metallogenic geological prospect. The Hehuashan lead-zinc deposit is further enriched with lead and zinc under the influence of late magmatic hydrothermal fluids. The deposit is closely related to sedimentation and hydrothermal process. The intrusion of rock mass damaged and transformed the Hehuashan deposit, and formed a small amount of sphalerite and galena. The Hehuashan ore deposit is located in the Tongling ore-concentrated area, and its metallogeny has both similarities and differences compared with those other ore deposits in the Tongling area. Its unique metallogeny enriches the metallogenic theory of the Tongling ore-concentrated area.