| 内蒙古双尖子山银多金属矿床大规模铜矿化的发现及意义 |
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| 关键词:Da Hinggan Mountains copper mineralization discovery Shuangjianzishan deposit |
| 基金项目:内蒙古地勘基金项目(编号: 2020YS-03);中国地质调查局“中国矿产地质志”项目(编号: DD20221695; DD20190379; DD20160346) |
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| Discovery and Significance of Large-scale Copper Mineralization in Shuangjianzishan Silver-polymetallic Deposit, Inner Mongolia |
| Shuangjianzishan super-large silver-polymetallic deposit in Balinzuoqi is located in the southern section of the Da Hinggan Mountains metallogenic belt, which is the largest silver deposit in Asia. Earlier studies believed that the Shuangjianzishan deposit consisted mainly of medium- and low-temperature hydrothermal mineralization and that the main economic metals were silver, lead, and zinc. However, with further research, a small amount of medium- and high-temperature copper-tin mineralization was found. The new construction drilling in 2021 revealed large-scale copper mineralization for the first time. Its thickest point is nearly 2 m thick. The ore is mainly massive, brecciated, veinlet, and densely disseminated, and the mineral assemblage is mainly chalcopyrite, pyrite, galena, sphalerite, arsenopyrite, and silver-bearing minerals. The discovery of large-scale copper mineralization in the Shuangjianzishan deposit confirms that it is a large-scale magmatic hydrothermal polymetallic deposit with a complete evolutionary sequence from medium to high temperature to low temperature and that copper may become a new industrial metal of the deposit. The metallogenic characteristics and distribution law of ore bodies show that the copper ore bodies in this mining area have not been fully explored and that great potential for copper prospecting exists in the deep regions. |
| MA Wen-wen,JIANG Biao,CHEN Yu-chuan,GONG Qing-jie,YIN Zhan-wen,SUN Hong-jun,LI Zhi-yuan,WU Li-wen,ZUO Yu-shan,LIU Zhao.2022.Discovery and Significance of Large-scale Copper Mineralization in Shuangjianzishan Silver-polymetallic Deposit, Inner Mongolia[J].Acta Geoscientica Sinica,43(4):521-526. |
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