青海尕龙格玛铜多金属矿床地质特征及成矿模式研究

尕龙格玛铜多金属矿床位于泛华夏大陆晚古生-中生代弧-盆区，西金乌兰-玉树消减杂岩带内，处于我国重要的有色金属成矿带--“三江”成矿带内，研究尕龙格玛铜多金属矿的成矿地质特征及成矿模式，对于“三江”成矿带青海段的找矿具有重要的实践和理论意义。通过研究尕龙格玛铜多金属矿床成矿地质背景及岩石化学特征发现，该矿床具有活动性陆缘岛弧带的成矿特征。从赋矿岩石建造、矿体形态、矿石矿物组合及围岩蚀变特征来看，该矿床属于长英质火山岩容矿的块状硫化物矿床（VHMS型），其成矿模式与日本“黑矿”极为相似，属黑矿型。

Study of the Geological Characteristics and Melallogenetic Model of Galonggema Copper Polymetallic Deposit,Qinghai Province

Galonggema is rich in copper and other metal deposit.The structural is located in the Xijinwulan-Yushu subduction and migmatitic complex zone which lies in area of Late Paleozoic-Mesozoic arc-basin of the Huaxia-pangaea.By analyzing its background of deposit formation and chemical characterize,it shows deposit characterize of lively marginal arc zone.By its rock formation analysis,ore shape,mineral combinations of rock and erosion of around-rock,it blongs to block-shaped sulphur deposit of the feldspar-quartz volcanics(the type of VHMS).This deposit is guite similar to the Japanese black deposit in the melallogenetic models.So it belongs to the type of black deposit.