刚果( 金) 堪苏祁铜钴矿床地质特征及成因分析
投稿时间:2009-09-05  修订日期:2009-11-11  点此下载全文
引用本文:李向前.刚果( 金) 堪苏祁铜钴矿床地质特征及成因分析[J].地质与勘探,2010,46(1):175-182
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作者单位
李向前 中国地质大学地球科学与资源学院 
基金项目:财政部2007 年国外矿产资源风险勘查专项(编号:财建(2007)482 号)资金资助
中文摘要:[摘摇要]文章在系统总结矿床成矿地质背景、矿床地质特征、矿床地球化学的基础上,分析了控矿因素和矿床成因。堪苏祁铜钴矿床严格受韧(脆)性剪切带控制,罗安群为初始矿源层,形成于距今880Ma ~750 Ma 年间,成矿温度在153.2 324.2 益之间。同生成岩成矿期后构造变质作用对矿床进行了热液改造,造成钴矿化叠加与局部富集。韧(脆)性剪切带良好的透水性、充沛的降水量、适宜的温度以及巨大的时间跨度,使矿床次生氧化作用极为充分,矿床铜氧化物含量为87-74%,钴氧化物含量为93-56%。矿床成因类型属与韧(脆)性剪切带关系密切的同生沉积-热液改造型。
中文关键词:堪苏祁 地质特征 矿床成因 铜钴摇刚果(金)
 
Geology and Genesis of Kansuki Copper-cobalt Deposit in Katanga Province, D. R. Congo
Abstract:Abstract:Geological setting, ore geology and geochemistry, mineralizing age and genesis of Kansuki copper-cobalt deposit are described briefly in this paper. It is concluded that the deposit is strictly controlled by sheared zone. Roan group is the initial source of metal, formed 880Ma-750Ma ago, and mineralizing temperature varies from 153.2to 324.2. The deposit was transformed by post-metallogenic tectogenesis and hydrothermal fluids, which led to mineralization superimposed and local enrichment of cobalt. Shear zone 's favorable water permeability, abundant rainfall, suitable tempera ture as well as huge time span, make the deposit's secondary oxidation extremely developed. The content of copper oxides is 87-74%, the content of co balt oxides is 93-56%. Kansuki copper-cobalt deposit should be shear zone-related epimetamorphic sedimentary-hydrothermal metasomatic deposit.
keywords:Kansuki, geology, genesis, copper-cobalt, D. R. Congo
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