摘要
此金矿地处博格达Cu-Zn-B-油页岩-磷成矿带,出露地层为上石炭统柳树沟组中基性火山岩、火山沉积岩,受北西西向F12断裂及其次级断裂构造控制,呈北西西向展布。矿区发育黄钾铁矾化、黄铁矿化、褐铁矿化、黄铁绢英岩化、硅化、绿帘石化、绿泥石化等低温蚀变组合,地球化学异常为As-Sn-Ag-Mo-Sb-Zn综合异常,圈定3条金矿体,东西延伸约数十米,厚度2m~4m,Au品位1~3.7g/t。区内石炭系上统柳树沟组中基性火山岩,叠加北西西向断裂构造,发育褐铁矿化、硅化、黄铁矿化、绿帘石化等低温蚀变组合,以及As、Ag、Sb等低温元素地球化学异常是寻找金矿的重要标志。初步分析,认为该矿床与索尔巴斯陶金矿相似,属浅成低温热液型矿床。
The gold deposit is located in the Bogda Cu-Zn-B-oil shale-phosphorus metallogenic belt.The strata are the intermediate-basic volcanic rocks and volcanic sedimentary rocks of the Upper Carboniferous Liushugou Formation.The deposit are controlled by the NWW-trending F12 fault and its secondary fault.The surrounding rock alteration of this gold deposit are jarosite,pyritization,limonitization,beresitization,silicification,epidotization and chloritization,the geochemical anomaly is As-Sn-Ag-Mo-Sb-Zn.Three gold orebodies are delineated,extending about tens of meters from east to west,with a thickness of 2~4meters and Au grade of 1~3.7g/t.The prospecting signs are intermediate-basic volcanic rocks of the Upper Carboniferous Liushugou Formation,NWW-trending fault structures,low-temperature alteration assemblages such as limonite,silicification,pyritization,geochemical anomalies of low temperature elements such as As,Ag and Sb.Preliminary analysis shows that the deposit is similar to Suoerbasitao gold deposit and belongs to epithermal deposit.
作者
崔玉宝
CUI Yu-bao(Shaanxi Provincial Key Project Reserve and Promotion center,Xi’an 710016,China)
出处
《世界有色金属》
2023年第1期91-93,共3页
World Nonferrous Metals
关键词
矿床特征
金矿
找矿标志
成因类型
Deposit Characteristics
Gold Deposit
Prospecting Sign
Genetic Type
