| 澳大利亚布朗斯(Browns)Co-Cu-Ni多金属矿床地球化学特征及与中国南方黑色岩系金属矿床对比 |
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| 引用本文： | 王明艳,王安建,邓圣富,刘伟,张德贤.澳大利亚布朗斯(Browns)Co-Cu-Ni多金属矿床地球化学特征及与中国南方黑色岩系金属矿床对比[J].大地构造与成矿学,2011,35(1):105-117. |
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| 作者姓名： | 王明艳 王安建 邓圣富 刘伟 张德贤 |
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| 作者单位： | 王明艳,WANG Mingyan(中国地质科学院,矿产资源研究所,北京,100037;湖南有色金属控股集团,矿产资源部,湖南,长沙410015);王安建,WANG Anjian(中国地质科学院,矿产资源研究所,北京,100037);邓圣富,刘伟,DENG Shengfu,LIU Wei(湖南有色金属控股集团,矿产资源部,湖南,长沙410015);张德贤,ZHANG Dexian(中南大学,地学与环境工程学院,湖南,长沙,410083) |
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| 基金项目： | 国土资源部"2008年度境外矿产资源风险勘探财政补贴"项目，国家科技攻关计划课题 |
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| 摘 要： | 黑色岩系中金属元素地球化学特征一直是矿床地质研究的重点.澳大利亚布朗斯Co-Cu-Ni多金属矿产于古元古代黑色岩系中,属典型的层控矿床;该矿床中主要成矿元素为Co、Cu、Ni和Pb,矿化分带不明显,蚀变微弱.δ34S均值范围为-5.21‰～14.78‰,估计生物成因的硫占一定比例,后期有细菌还原硫酸盐成因的高硫同位素组...
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| 关 键 词： | 布朗斯 地球化学 Co-Cu-Ni多金属矿床 微量元素 同位素 黑色岩系 中国南方 |
Geochemistry of the Brwons Co-Cu-Ni Polymetallic Deposit and Comparison with the Black Shale Hosted Polymetallic Deposits in South China |
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| WANG Mingyan,WANG Anjian,DENG Shengfu,LIU Wei,ZHANG Dexian.Geochemistry of the Brwons Co-Cu-Ni Polymetallic Deposit and Comparison with the Black Shale Hosted Polymetallic Deposits in South China[J].Geotectonica et Metallogenia,2011,35(1):105-117. |
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| Authors: | WANG Mingyan WANG Anjian DENG Shengfu LIU Wei ZHANG Dexian |
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| Affiliation: | WANG Mingyan1,2,WANG Anjian1,DENG Shengfu2,LIU Wei2 and ZHANG Dexian3(1.Institute of Mineral Resources,Chinese Academy of Geological Sciences,Beijing 100037,2.Department of Mineral Resources,HNG,Changsha 410015,Hunan,China,3.School of Geosciences and Environmental Engineering,Central South University,Changsha 410083,China) |
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| Abstract: | The Browns Co-Cu-Ni deposit is hosted by the Whites Shale of Paleo-Preterozoic in Northern Territory of Australia,and it is a typical strata-bound deposit. Based on the analysis of the geological characters in detail,the major elements,trace elements,Pb and S isotope,and the organic matter,the enrichment mechanism of the ore metals is studied in this paper. The main Co-hosting mineral is siegenite,which is carried by pyrite. δ34S values of the sulfides range from-5.21‰ to +14.78‰,indicating involvement of thermochemical reduction and bacterial activity. Homogeneous lead isotope features of galena (206Pb/204Pb=16.20~16.22,207Pb/206Pb= 15.48~15.51,208Pb/207Pb=35.86~35.92) suggest that Pb was derived from the crust. Ore geochemical studies illustrate that the deposit is primarily of sedimentary origin and were somewhat reformed by later tectonic-thermal events. Compared with the deposits hosted in the South China black shales,it can be concluded that the Browns deposit is a normal sedimentation deposit,while the latter are Sedex-type deposits. |
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| Keywords: | Browns geochemistry Co-Cu-Ni polymetallic deposit trace elements isotope black shale South China |
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