赣西五宝山钴矿床地质特征及成因探讨

GEOLOGICAL FEATURES AND GENESIS OF THE COBALT DEPOSIT OF WUBAOSHAN IN WESTERN JIANGXI

五宝山钴矿床是近年普查中发现的一个中型钴矿床，属层控热液叠加型钴矿床。钴矿化产于上三叠统安源组砂砾岩层中，受ＮＥ向逆断层控制，矿体呈似层状或透镜状产出，随褶曲变化而起伏，钴矿体品位在０．０２４％～１．１５％范围变化，平均含钴０．４０２８％。矿石自然类型为砂砾岩型铅锌矿石、铅锌钴矿石和钴矿石，矿石可选性良好。钴矿物主要有辉钴矿和钴毒砂。

The cobalt deposit of Wubaoshan is a newlydiscovered cobalt deposit of mediumsize belonging to strataboundhydrothermal superimposition type.The deposit occurs in the sandstoneconglomerates of Anyuan Group in the upper Triassic,controled by NEstrike faults.The Orebodies are layer like or lenticular,changing with the folding of the strata.The grade of Cobalt ranges from 0.024%-1.15%,averaging at 0.4028%.The natural types of ores are leadzinc ores,leadzinccobalt ores and cobalt ores of sandstoneconglomerate type.The cobalt minerals are mainly cobaltite and danaite;The ores are easy to be processed.