| 广西铜坑锡多金属矿黄铁矿的Re-Os同位素组成及成矿物质来源示踪 |
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| 引用本文： | 梁婷,;王登红,;屈文俊,;蔡明海,;韦可利. 广西铜坑锡多金属矿黄铁矿的Re-Os同位素组成及成矿物质来源示踪[J]. 西安地质学院学报, 2009, 0(3): 230-235 |
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| 作者姓名： | 梁婷, 王登红, 屈文俊, 蔡明海, 韦可利 |
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| 作者单位： | [1]长安大学西部矿产资源与地质工程教育部重点实验室,陕西西安710054; [2]中国地质科学院矿产资源研究所,北京100037; [3]中国地质科学院国家地质实验测试中心,北京100037; [4]广西大学资源与环境学院,广西南宁530004; [5]广西华锡集团股份有限公司,广西柳州545006 |
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| 基金项目： | 中国地质调查局项目（200420i90004;1212010633903;200545022;20089946） |
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| 摘 要： | 利用Re-Os同位素技术,对大厂铜坑锡多金属矿床中的黄铁矿进行了Re、Os同位素组成的测定,获得黄铁矿等时线年龄为（122±44）Ma。黄铁矿的N（187Os）/N（188Os）初始比值为0.56±0.12;γOs值为197.46～394.16,平均值为293.49,介于地幔与地壳之间,结合矿物中普通Os的w（Os）u对w（Re）/w（Os）比值,提出了其成矿物质来源可能为壳幔混合来源的新认识。
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| 关 键 词： | 黄铁矿 Re-Os同位素组成 成矿物质来源 铜坑 |
Re-Os Isotope Composition and Source of Ore-forming Material of Pyrite in Tongkeng Tin-pollmetallic Deposit,Guangxi |
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| Affiliation: | LIANG Ting, WANG Deng-hong , QU Wen-jun, CAI Ming-hai, WEI Ke-li(1. Key Laboratory of Western Mineral Resources and Geological Engineering of Ministry of Education, Chang＇an University X i＇an 710054, Shaanxi , China; 2. Institute o f Mineral Resources , Chinese Academy of Geological Sciences, Beijing 100037, China; 3. National Research Center for Geoanalysis, Chinese Academy of Geological Sciences, Beijing 100037, China; 4. School of Resources and Environment, Guangxi University, Nanning 530004, Guangxi, China; 5. Guangxi China Tin Group Company Limited, Liuzhou 545006, Guangxi, China) |
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| Abstract: | With the Re-Os isotopic technology, the Re-Os isotope composition of pyrites is identified, and the isoehron age of （122±44） Ma is obtained. The initial ratio N（187Os）/N（188Os） of pyrite is 0. 56±0.12, and the Yos value is between 197.46 and 394.16, with an average of 293.49. These data suggest a changing between the crust-derived and mantle derived sources. Considering the ratio of w（Os）u versus w（Re）/w（Os）, it is thought that the source of ore-forming materials may have the feature of crust-mantle derived mixture. |
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| Keywords: | pyrite Re-Os isotope compositions ore-forming material sources Tongkeng |
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