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都匀地区铅锌矿主要沿蔓洞逆断裂两侧分布,断裂走向NE—SW。区内含矿岩系为寒武系清虚洞组白云岩,围岩蚀变主要为白云石化,围岩蚀变与铅锌矿成矿有一定的关联,但最主要与地质构造有关,尤其是区域性大断裂旁侧的次级断层不但为都匀地区铅锌矿床形成的热液通道,同时也是铅锌矿液的运移通道和矿体形成场所。都匀地区铅锌矿矿石结构构造主要呈细脉鲕粒状结构、致密块状构造,并且具有多期次构造含矿热液叠加改造效应,主要表现在矿石金属元素品位含量上,叠加期次越多,金属元素品位越高,铅锌矿体大都赋存于次级断层构造发育地段,表明区内铅锌矿的形成受多期次构造运动的影响,使得后期构造热液中的金属元素在前期成矿的基础上形成了叠加改造效应。结合区内地质工作成果,分别从构造、形态、围岩蚀变等方面对区内铅锌矿床地质特征进行了详细讨论,对于区内进一步开展铅锌矿找矿勘探工作有一定的参考价值。
The lead-zinc deposits in Duyun area are mainly distributed along both sides of the reverse fault of Manzhikou, and the fault goes to NE-SW. The ore-bearing rocks in the area are dolomite of the Qingxudong Formation in the Cambrian. The alteration of the wall rocks is mainly dolomitization. The alteration of the wall rocks is related to the mineralization of lead-zinc deposits, but the most important is related to the geological structure, especially It is not only the hydrothermal channel formed by lead-zinc deposits in the Duyun area, but also the migration channel and ore body formation of lead-zinc deposits. The ore-forming structure of lead-zinc ore in Duyun area is mainly composed of fine vein oolitic structure and dense block structure, and has the effect of superposition and remodeling of multi-stage ore-bearing hydrothermal fluids, mainly on the grade of ore metal elements, The higher the grade of metal elements, the most Pb-Zn orebodies occur in the secondary fault tectonic development, indicating that the formation of lead-zinc deposits in the area is affected by the multistage tectonic movement so that the metal elements in the late tectonic hydrothermal fluid On the basis of the previous mineralization formed a superimposed transformation effect. The geological characteristics of lead-zinc deposits in the area are discussed in detail from the aspects of tectonics, morphology and wall rock alteration based on the results of geological work in the area, which is of certain reference value for the further prospecting of lead-zinc deposits in the area.