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内蒙古查干敖包钼矿Re-Os同位素年龄及成矿作用研究

文章导航 > 中国地质 > 2015 > 42(1): 224-234

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梁帅1刘敬党1,2肖荣阁3张艳飞2翟富荣4. 内蒙古查干敖包钼矿Re-Os同位素年龄及成矿作用研究[J]. 中国地质, 2015, 42(1): 224-234.
引用本文: 梁帅1刘敬党1,2肖荣阁3张艳飞2翟富荣4. 内蒙古查干敖包钼矿Re-Os同位素年龄及成矿作用研究[J]. 中国地质, 2015, 42(1): 224-234.
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LIANG Shuai1, LIU Jing-dang1, 2, XIAO Rong-ge3, ZHANG Yan-fei2, ZHAI Fu-rong4. Re-Os isotopic ages and mineralization of the Qagan Obo molybdenite deposit, Inner Mongolia[J]. Geology in China, 2015, 42(1): 224-234.
Citation: LIANG Shuai1, LIU Jing-dang1, 2, XIAO Rong-ge3, ZHANG Yan-fei2, ZHAI Fu-rong4. Re-Os isotopic ages and mineralization of the Qagan Obo molybdenite deposit, Inner Mongolia[J]. Geology in China, 2015, 42(1): 224-234.
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内蒙古查干敖包钼矿Re-Os同位素年龄及成矿作用研究

  • 1.辽宁工程技术大学 矿业学院, 辽宁 阜新 123000; 2.辽宁省化工地质勘查院 地勘院, 辽宁 锦州 121000; 3.中国地质大学地球科学与资源学院, 北京100083; 4.辽宁省地质勘查院 地勘院, 辽宁 大连 116000

Re-Os isotopic ages and mineralization of the Qagan Obo molybdenite deposit, Inner Mongolia

  • 1. Liaoning Technical University, Fuxin 123000, Liaoning, China; 2. Liaoning Chemical Geological Exploration College, Jinzhou 121000, Liaoning, China; 3. China University of Geosciences, Beijing 100083, China; 4. Geological Exploration Institute of Liaoning Academy of Geological Exploration, Dalian 116000, Liaoning, China

    摘要
  • 提要：内蒙古查干敖包钼矿是宝音图钼矿区矿床之一，为狼山北段发现的斑岩白云母石英脉型钼矿, 成矿岩体主要为钾长花岗岩、细晶花岗岩和花岗斑岩, 岩体锆石U-Pb平均年龄为(253.5±3.3) Ma。本次研究测得查干敖包辉钼矿的187Re-187Os等时线年龄为(239.2±5.8) Ma, 与成矿岩体时代相差约13 Ma, 反映钼矿床的形成经历了较长的成岩成矿演化历史。查干敖包钼矿床具有斑岩矿床特点, 矿床产于成矿岩体内接触带, 但是矿化形成于白云母石英脉中, 主要与白云母热液矿物有关, 因此是一种特殊的斑岩型钼矿床。
    Abstract: The Qagan Obao molybdenum deposit was discovered in the northern part of the Langshan Mountain. It is a porphyry muscovite quartz vein type deposit, and the ore-forming rock bodies are mainly K-feldspar granite, fine-grained granite and granite porphyry, with the zircon U-Pb mean age of （53.5 ± 3.3） Ma. Molybdenite 187Re-187Os isochron age of the Qagan Obao molybdenum deposit is （239.2 ± 5.8） Ma, with the rock-forming and ore-forming time difference being about 13 Ma, suggesting that the formation of the Qagan Obo molybdenum deposit experienced a long rock-forming and ore-forming evolution history. The Qagan Obo molybdenum deposit has the characteristics of the porphyry deposit, the ore deposit occurs in the inner contact zone with the country rock, but the mineralization took plade in muscovite quartz veins, mainly related to hydrothermal mineral muscovite. The deposit is therefore a special kind of porphyry molybdenum deposit.
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刊出日期:  2015-02-24

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