青海五龙沟地区岩金沟金矿床地质特征

Geological Characters of Yanjingou Gold Mine in Qinghai Province Wulonggou Area

青海五龙沟金矿床是东昆仑成矿带大型矿集区之一,具有十分重要的经济价值与研究意义。五龙沟金矿区地处青海省都兰县境内,属于青藏高原北部的东昆仑山。岩金沟矿床位于五龙沟金矿区。矿区主要出露地层有太古-下元古界金水口群、中元古界小庙群、上元古界丘吉东沟群。岩金沟矿区断裂构造极为发育,金矿体产出及形态严重受限于断裂构造分布及规模,主要分布在北西向含金破碎蚀变带中,围岩蚀变以硅化、绢云母化、高岭土化和黄铁矿化为主,且黄铁矿为主要载金矿物。

Wulonggou Gold Mine in Qinghai province is one of the large ore concentration area of east Kunlun metallogenic belt, has very importance to the economic value and research significance. Wulonggou Mining area is located in the county of Qinghai province Dulan county, belong to the east Kunlun mountains in the northern part of the Tibetan Plateau. Yanjingou Gold Mine is located in Wulonggou area. Mining area are mainly open layer with Archean group-lower Proterozoic Jinshuikou Group, middle proterozoic group of Xiaomiao Group,upper proterozoic Qiujidonggou Group. The Fracture structure of Yanjingou Mining area is development, Gold ore body output form seriously restricted to fracture distribution and scale, mainly distributed in the North-East gold broken alteration belt. Wall rock alteration to silicification, sericitization, kaolin and pyritization, pyrite is the main gold conten.