文章摘要
刘继顺.与溢流性玄武岩有关的铜镍硫化物矿床 地质地球学特征与成矿潜力分析 —以广西罗城县清明山铜镍硫化物矿床为例[J].地质与勘探,2010,46(4):
与溢流性玄武岩有关的铜镍硫化物矿床 地质地球学特征与成矿潜力分析 —以广西罗城县清明山铜镍硫化物矿床为例
Analysis of Geologic and Gechemical Characteristic and Potential of Cu-NiSulfide Deposits Associated with Overflow Basalt:A Case Study of theQingmingshan Cu-Ni Sulfide Deposit, Guangxi Province
投稿时间：2010-02-24  修订日期：2010-06-16
DOI：
中文关键词: 铜镍硫化物矿床 镁铁质-超镁铁岩 玄武岩 清明山
英文关键词: Copper-nickel sulfide deposit,mafic-ultramafic,basalt,Qingmingshan
基金项目:国家自然科学基金项目(40072032)资助
作者单位
刘继顺 中南大学地学与环境工程学院,长沙摇 
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中文摘要:
      [摘摇要]广西罗城县清明山铜镍硫化物矿床,镁铁质-超镁铁侵入岩与玄武岩广泛分布,时空关系 密切,两者岩石化学成分丰度相同,均具有富MgO、贫SiO2 、TiO2 、K2 O 的特征,微量元素、稀土特征相同, 具有成因上的联系和有先后演化的特征。含矿镁铁质岩体岩石化学成分SiO2 含量为42. 68 ~50. 63%, K2 O 含量0. 052 ~2. 54%,TiO2 含量0. 326 ~ 0. 63%;微量元素Rb,Ba 富集,Ta、Nb 亏损的特征,稀土元 素含量中等撞REE=27. 56 ~ 52. 36(10-6 ),撞LREE/ 撞HREE=7. 17 ~ 12. 31,(La/ Yb)N =2. 48 ~ 8. 17,啄Eu =0. 93 ~1. 43,轻稀土富集,配分曲线右倾,无啄Eu 负异常;硫同位素啄34 S 值4. 52 ~17. 04译。镁铁质-超 镁铁岩和铜镍硫化矿主要物质来源于幔源,有壳源混染;地质特征、地球化学特征等与美国Duluth 铜镍 硫化物矿床特征相同,为国内一种新的与溢流玄岩有关的岩浆铜镍硫化物矿床,资源潜力巨大。
英文摘要:
      Abstract:In the Qingmingshan Cu-Ni sulfide deposit of Luocheng county,Guangxi Provinc,mafic-ultramafic volcanic and intrusive rocks are widely distributed,closely related to each other in space and time,both of which are rich in MgO,and poor in SiO2 ,TiO2 ,K2 O. They have same characteristics of abundance of the chemical composition and trace elements rare earth, with the relation in causes and the characteristics of sequenctial evolution. The ore -bearing mafic-ultramafic rock contains SiO2 :42. 68% ~ 50. 63%,Al2 O3 6. 62% ~ 17. 54%, MgO:6. 88% ~ 25. 12%,K2 O:0. 052% ~ 2. 54%, TiO2 :0. 326 ~0. 63%,respectively,with trace elements enrich in Rb and Ba, and lossing in Ta and Nb. Rare earth elements have medium- grade abun鄄 dance of 撞REE, 撞REE varying from 27. 56(10-6 ) to 52. 36(10-6 ),撞LREE / 撞HREE from 7. 17 to 12. 31,(La / Yb)N from 2. 48 to 8. 17,啄Eu from 0. 93 to 1. 43,enrichment in abundances of LREE,right-leaning on distribution patterns,no 啄Eu negative anomalies,啄34 S value from 4. 52译to 17. 04 译. Mafic-ultramafic rocks and nickel-copper sulfide ore mostly originate from the mantle material and mixed by crust,have some geological and geochem鄄 ical characteristics comparable with Duluth copper-nickel sulfide deposits in the United States. Thus it should be one new domestic Cu-Ni sulfide deposit related closely with overflow basalt in cause,representing a giant potential of resources.
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