南京栖霞山铅锌多金属矿成矿特征及找矿方向

Ore-forming properties and prospect of Pb-Zn polymetallic ore deposit in Xixia Mountain of Nanjing

在分析矿床地质特征的基础上,结合前人资料探讨了栖霞山铅锌多金属矿的成矿物质来源、控矿因素和矿床成因。成矿流体主要由来自深部的含矿热液、源自石炭—二叠系碳酸盐岩的有机流体和地表渗流雨水组成。其中,有机流体在矿物沉淀富集过程中起到较为重要的作用。矿体主要受纵向断裂F2、上下构造层之间不整合面和石炭—二叠系碳酸盐岩地层控制,认为在栖霞山深部,沿纵向断裂F2的延伸方向仍有较大找矿空间。

Based on the analysis of the geological properties of the ore deposit, the authors discussed the ore-forming material sources, ore control factors and the genesis of the deposit in combination with the previous study. The ore-forming fluid was composed of ore- bearing hydrothermal fluid from deep source, organic fluid from C-P carbonate rock and meteoric water. The organic fluid played an im- portant role in the precipitation and enrichment of ore forming elements. The ore body was controlled by longitudinal fault （F2 ）, un- conformity surface over and under the structural layers and C-P carbonate rock. It was concluded that in the deep part of the deposit, there was prospecting potential along the extension of longitudinal fault （ F2 ）.