南秦岭南缘梅子铺金矿地质特征及矿床成因初探

Geological characteristics and genesis of the Mei Zi Pu gold deposit in the southern margin of southern Qinling Mountains

梅子铺金矿为一典型的含金石英脉型矿床。含矿热液沿区域性北西向断裂运移,就位于其旁侧规模较小的北北东向次级断裂中。金矿体产状、形态、规模严格受断裂构造带控制,矿体呈含金石英脉产出。北西向断裂为导矿构造,北北东向次级断裂为容矿构造。含矿石英脉整体向南东陡倾,断裂构造扩容部位矿体厚度增大,品位明显增高,易于形成富大矿体。

the Mei zpai gold deposit is a typical gold bearing quartz vein type deposit.The ore bearing hydrothermal fluids migrate along the regional NW trending faults,and are located in the smaller NNE trending faults on the side.The occurrence,form and scale of gold deposits are strictly controlled by the fault structural belt,and the ore bodies are gold bearing quartz veins.The NW trending fault is a ore bearing structure and the NE trending faults are ore hosting structures.The ore-bearing quartz veins dip steeply southward and eastward as a whole,and the thickness and grade of the orebody in the dilatancy area of the fault structure increase obviously,which makes it easy to form rich and large orebodies.