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大海铅锌矿床位于云南省会泽县南西,处于川滇黔铅锌成矿域滇东北铅锌成矿区南部,为近年来新发现的产于下寒武系渔户村组中的层控矿床。矿区北起泥者箐,南至下观音岩村银厂沟,长10 km,呈南北向展布,由北而南划分为火石梁子、老林-石板沟和八角地-观音岩3个矿段。赋矿围岩为下寒武统渔户村组浅灰、灰白色中层至厚层状粉晶白云岩、硅质碎裂白云岩夹硅质岩,近南北向层间断裂控制了上、下2个含矿层的分布,北西向断裂控制了富厚矿体的产出。火石梁子、老林-石板沟矿段以上含矿层矿化为主,八角地-观音岩矿段以下含矿层矿化为主。本文通过综合研究矿床地质特征,提出矿化强度与含矿层、含矿层与顶板岩性差异、层间构造、叠加构造密切相关,通过对勘查程度较高的八角地-观音岩矿段的勘查经验分析了矿床的进一步找矿前景,并指出了下步勘查方向和合理的勘查手段。
The sea lead-zinc deposit is located in Nanxi, Huize County, Yunnan Province, and is located in the south of the lead-zinc mineralization area in the northeastern Yunnan and Yunnan-Yunnan lead-zinc mineralized areas. It is a newly discovered stratabound ore deposit in the Lower Cambrian Fudau Village Formation in recent years. The mining area starts from Nishazitang in the north and goes down to Guanyinyancun Yinchanggou in the south, with a length of 10 km. It is distributed in a north-south direction and is divided into three sections: Flint Liangzi, Laolin-Shibagou and Bajigaodi-Guanyinyan from north to south. The ore-hosting rocks are light gray and grayish middle to thickly layered pink crystalline dolomite and siliceous fractured dolomite with siliceous rocks in the Lower Cambrian Fishermen’s Village, with nearly north-south interlaminar faults controlling the upper and lower 2 A distribution of ore-bearing strata, NW-trending faults control the output of rich ore bodies. Flint beam, the old forest - Shibagou ore above the main mineralization, the octagonal - Guanyin rock below the main ore-bearing mineralization. In this paper, through comprehensive study of the geological characteristics of the deposit, it is proposed that the mineralization intensity is closely related to the difference between the ore-bearing layer, the ore-bearing layer and the roof rock, the interlayer structure and the superimposed structure. Based on the exploration experience of the octagonal- The prospects of further prospecting for the deposit are analyzed, and the exploration direction and reasonable means of exploration are pointed out.