哈尔科地区金矿地质特征及找矿方向

Geological Features and Range of Reconnaissance of the Haerke Au Deposit in Qinghai

哈尔科金矿点位于青海省德令哈市,产于奥陶纪浊积岩中,含矿岩石主要为板岩及砂岩,矿石矿物以黄铁矿为主,矿体产状与地层产状基本一致,金矿石类型主要为石英脉型、砂板岩型、破碎带型,矿石品位变化较大。矿床地质特征及矿化蚀变信息表明:金成矿与热液活动紧密相关,应属浅成低温热液型金矿。化探工作则显示哈尔科东部是重要的找矿靶区。

The Haerke Au deposit in Delingha, Qinghai occurs in the Ordovician turbidite, most of ore-bearing rocks are sandstone and slate. Main ore mineral is pyrite. Occurrence of orebody coincides basically with that of wallrock. Au mineralization belongs to quartz vein type, fracture zone type and structural altered rock type. Ore grade is variegated. The Au deposit is an epithermal one. Geochemical data indicate that the east has good prospecting perspective.