广西高龙金矿热水沉积成矿作用研究  

MINERALIZING BY HOT WATER DEPOSITION IN GANLONG GOLD DEPOSIT,GUANGXI

作　　者：陈大经 黄有德[1] 谢世业[1] 

机构地区：[1]桂林矿产地质研究院,广西桂林541004

出　　处：《矿产与地质》2003年第5期583-588,共6页Mineral Resources and Geology

基　　金：广西科学基金资助项目(桂科基0236066)部分研究成果

摘　　要：高龙金矿赋存于滇黔桂裂谷右江裂谷带,区域上为一高的地热场环境,矿床形成于相对封闭的、具还原性地球化学障的局部洼陷,矿区具灰岩同生角砾岩、硅化构造角砾岩及生长断裂等同沉积断裂构造系统,矿体为多层的似层状、层状、并与脉状矿体共存,矿石具角砾状、层纹状构造及草莓状结构,矿床具"底蚀"特征,同时论述了硅质岩的岩石学、地球化学特征。据此提出矿床为热水沉积型金矿。Gaolong gold deposit occurs in Youjiang rift zone of Dian(Yunnan)-Qian(Guizhou)-Gui(guangxi) rift. It is a high temperature geothermal field. The deposit formed in a relatively closed local depression with a reductive geochemical barrier. There are carboniferous simultaneous breccia, silicified structure breccia and syndepositional fracture system of growing fracture. The orebodies are stratiform-like or stratiform with several layers and coexisted with vein type orebodies. There are breccia and bedded structure and strawberry texture in the ore and the deposit is characterized by 'bottom erosion'. It is proposed that the seposit is a hot water depositional type gold deposit on the basis of a discussion of the petrology and geochemistry of silicalite.

关 键 词：金矿床 硅质岩 热水沉积 成矿作用 广西高龙 

分 类 号：P618.51[天文地球—矿床学] P611.22[天文地球—地质学]