沅陵县沃溪金锑钨矿床网状细脉型矿体地质特征

THE GEOLOGIC FEATURE OF THE STOCKWORK VEINLET OREBODY IN WOXI GOLD-ANTIMONY-TUNGSTEN DEPOSIT,YUANLING COUNTY

沃溪金锑钨矿床中网状细脉型矿体是一种容易被忽略的有价值的矿体,探明矿石量120万吨。这种矿体赋存于主脉(层状含矿石英脉)间蚀变板岩中,与主脉有着密切的关系,严格受主脉旁的次级构造控制。矿体呈楔状、透镜状、囊状。有白钨矿-自然金、白钨矿-辉锑矿-自然金、单一自然金三种矿化类型。

The stockwrok veinlet orebody in Woxi gold-antimony-tungsten deposit is a kind of valuable orebody, which is easy to be neglected, its demonstrated ore reserve reaching 1.2 million ton. This kind of orebodies occurred in the altered slate between main veins(stratifom ore-bearing quartz veins), and closely related to the main veins, strictly controlled by the secondary structures inside the main veins. The shape of the orebodies is mainly wedgelike, lenticular and pocketlike. There are three kinds of mineralization, i. e., scheelite-natural gold, schcelite-stibnite-natural gold. and single natural gold mineralization.