四川省宁南县银厂沟-骑骡沟铅锌矿床地质特征

通过野外路线地质调查、重点坑道考察、沿层追索、矿床地质调查以及室内综合分析,对银厂沟-骑骡沟铅锌矿床的地质特征进行了初步研究,指出:矿床主要赋存于上震旦统灯影组顶部(Zbd3)的硅质条带白云岩中,矿床明显受地层、岩性、构造条件的控制;矿石矿物以铅锌硫化物为主,矿床属中、低温热液矿床;提出4个找矿标志,地层是找矿的基础条件,岩性和热液蚀变是找矿的重要标志,控矿构造是找矿的重点。

Study on the geological characteristics in Yinchanggou-Qiluogou Pb-Zn deposit, Ninnan County, Sichuan Province, Southwest China

This paper studied the geological characteristics of Yinchanggou-Qiluogou Pb-Zn deposit, by geological investigation, important adit inspection, layer recourse, deposit geological survey and synthetic analysis. Finally, the conclusion has been drawn as follows：The dolomite with siliceous strip of Upper Dengying Formation of Upper Sinian （Zbd3） was the only host strata for orebody. The deposit was obviously controlled by formation, lithology, and structural conditions. The ore minerals were mainly composed of Lead-zinc sulphide. This deposit should be hydrothermal filling replacement deposit.Four prospecting marks were conclued： Formation is the basic condition fbr prospecting, lithology and hydrothermal alteration is important symbols of prospecting, ore-controlling structure is the key of prospecting.