| On the metallogenesis of Dajing Cu-Sn-polymetallic ore deposit, Inner Mongolia, China |
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| 作者姓名： | NIU Shuyin SUN Aiqun WANG Baode LIU Jianming GUO Lijun HU Huabin XU Chuanshi |
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| 作者单位： | NIU Shuyin1*，SUN Aiqun1，WANG Baode1，LIU Jianming2，GUO Lijun3，HU Huabin1，and XU Chuanshi1 1 College of Resources，Shijiazhuang University of Economics，Shijiazhuang 050031，China 2 Institute of Geology and Geophysics，Chinese Academy of Sciences，Beijing 100029，China 3 Bureau of Geological Mineral Resources Development of Inner Mongolia，Hohhot 070020，China |
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| 摘 要： | The Dajing Cu-Sn-polymetallic ore deposit is famous for its large scale, abundant associated elements, narrow and closely-spaced development of ore veins and high grade, but exploration within the mining district and its deeper parts has revealed no Yanshanian rockbody. Therefore, there have been proposed a diversity of hypotheses on the genesis of the deposit. The authors, from the angle of mantle-branch structure, provided evidence showing that the mining district is located in the core of the Da Hinggan Ling mantle-branch structure, the multi-stage evolution of mantle plume paved the way for the ascending of deep-source ore fluids and these fluids extracted part of the ore-forming materials. Then, these ore-forming materials were concentrated in the favorable structural loci (e.g. structural fissures) to form ores. The orientation of ore-forming and ore-controlling fissures is closely related to the regionally structural stress field at the metallogenic stage. The zonation of Sn, Cu, Au, Ag, Pb, and Zn within the mining district appears to be related to metallogenesis and the crystallization temperature of ore-forming materials. Mineralization of Sn, Cu, Au, etc. which require relatively high crystallization temperature and pressure is in most cases recognized in the central part of the mining district, while that of Ag, Pb, Zn, etc. which require relatively low crystallization temperature and pressure is, for the most part, produced in the periphery of the mining district.
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| 关 键 词： | 地幔支路结构 中国 内蒙古 铜 锡 矿石 |
| 收稿时间： | 17 October 2006 |
| 修稿时间： | 2006-10-17 |
On the metallogenesis of Dajing Cu-Sn-polymetallic ore deposit,Inner Mongolia,China |
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| NIU Shuyin SUN Aiqun WANG Baode LIU Jianming GUO Lijun HU Huabin XU Chuanshi.On the metallogenesis of Dajing Cu-Sn-polymetallic ore deposit, Inner Mongolia, China[J].Chinese Journal of Geochemistry,2007,26(4):394-401. |
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| Authors: | Niu Shuyin Sun Aiqun Wang Baode Liu Jianming Guo Lijun Hu Huabin Xu Chuanshi |
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| Institution: | (1) College of Resources, Shijiazhuang University of Economics, Shijiazhuang, 050031, China;(2) Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, 100029, China;(3) Bureau of Geological Mineral Resources Development of Inner Mongolia, Hohhot, 070020, China |
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| Abstract: | The Dajing Cu-Sn-polymetallic ore deposit is famous for its large scale, abundant associated elements, narrow and closely-spaced development of ore veins and high grade, but exploration within the mining district and its deeper parts has revealed no Yanshanian rockbody. Therefore, there have been proposed a diversity of hypotheses on the genesis of the deposit. The authors, from the angle of mantle-branch structure, provided evidence showing that the mining district is located in the core of the Da Hinggan Ling mantle-branch structure, the multi-stage evolution of mantle plume paved the way for the ascending of deep-source ore fluids and these fluids extracted part of the ore-forming materials. Then, these ore-forming materials were concentrated in the favorable structural loci (e.g. structural fissures) to form ores. The orientation of ore-forming and ore-controlling fissures is closely related to the regionally structural stress field at the metallogenic stage. The zonation of Sn, Cu, Au, Ag, Pb, and Zn within the mining district appears to be related to metallogenesis and the crystallization temperature of ore-forming materials. Mineralization of Sn, Cu, Au, etc. which require relatively high crystallization temperature and pressure is in most cases recognized in the central part of the mining district, while that of Ag, Pb, Zn, etc. which require relatively low crystallization temperature and pressure is, for the most part, produced in the periphery of the mining district. |
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| Keywords: | mantle-branch structure metallogenesis metallogenic rule polymetallic ore Da Hinggan Ling |
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