| 江西省大吉山钨矿床辉钼矿铼-锇同位素定年 |
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| 引用本文：张思明,陈郑辉,施光海,李丽侠,屈文俊,李超.2011.Re-Os isotopic dating of molybdenite from Dajishan tungsten deposit in Jiangxi Province[J].Mineral Deposits,30(6):1113~1121 |
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| 基金项目:本文得到全国危机矿山接替资源找矿项目（［2008］204号）、深部探测技术与实验研究专项资助项目（SinoProbe-03-03）和“南岭大型矿集区深部评价技术方法研究”项目（1212010813062）的共同资助 |
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| 中文摘要:大吉山钨矿床位于南岭成矿带，是赣南地区著名的大型钨矿床。文章首次运用铼-锇同位素方法对大吉山钨矿床进行精确定年，给出了可靠的辉钼矿铼-锇等时线年龄（161.0±1.3） Ma。该年龄代表了大吉山石英脉型黑钨矿的成矿年龄，属于燕山早期。大吉山石英脉型黑钨矿成矿年龄的精确厘定，为本地区的成矿理论研究提供了重要数据，也进一步显示170～150 Ma是华南地区中生代钨矿大规模成矿作用的重要时期。 |
| 中文关键词:地球化学 大吉山钨矿床 辉钼矿 铼-锇同位素定年 成矿年代 |
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| Re-Os isotopic dating of molybdenite from Dajishan tungsten deposit in Jiangxi Province |
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| Abstract:Located in the Nanling metallogenic belt of Jiangxi Province, the Dajishan tungsten deposit is a famous large-size tungsten deposit. Precise Re-Os isotopic dating of molybdenite from the Dajishan tungsten deposit was carried out, which yielded an isochron age of (161.0±1.3) Ma. This age is interpreted as the formation age of the molybdenite, representing the formation period of the Dajishan quartz-tungsten type deposit, i.e., the ore deposit was formed in Early Yanshanian period. The precise dating provides convincing basic reliable data for further study of the ore deposit, and also suggests that the period of 170～150 Ma was an important period for tungsten formation in South China. |
| keywords:geochemistry, Dajishan tungsten deposit, molybdenite, Re-Os isotopic dating, mineralization age |
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