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文章从解析已知矿体入手 ,认为江永铅锌矿床外接触带主矿体不是脉型矿体 ,而是岩溶型矿体。岩溶成矿构造受石磴子组中厚层灰岩控制。一组岩溶由两个岩厅组成 ,一个发育于 2 0 0～32 0 m标高 ,另一个发育于 4 0 0～ 550 m标高。根据近等距性原则 ,分别于已知岩溶型矿体 ( 、 )的南、北两侧预测了 、 及 号岩溶组。建立了岩溶成矿构造系列、结构及坑下鉴别标志 ,并探讨了岩溶的形成与演化。预测结论与物探激电异常结果吻合。
Starting from the analysis of known ore bodies, the paper holds that the main ore body outside the contact zone of Jiangyong Pb-Zn deposit is not a vein type but a karst type ore body. Karst mineralization is controlled by medium-thick limestone in the Shijiazi Formation. A group of karst formations consists of two rock chambers, one developed at 200 to 320 m elevation and the other at 400 to 550 m elevation. According to the principle of near equidistance, we predict the karstification in the south and north sides of the known karst ore body, respectively. Established a series of karst mineralization structure, structure and pit identification mark, and discussed the formation and evolution of karst. The prediction conclusion is consistent with the geophysical anomalies.