Journal of Jilin University(Earth Science Edition) ›› 2018, Vol. 48 ›› Issue (3): 754-768.doi: 10.13278/j.cnki.jjuese.20160327

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Mineral Characteristics and Geological Significance of the Baoshan Cu-Pb-Zn Polymetallic Deposit in Hunan Province

Qi Fanyu1,2, Zhang Zhi1, Zhu Xinyou3, Li Yongsheng1,4, Zhen Shimin1,4, Gong Fanying1,4, Gong Xiaodong5   

  1. 1. Development and Research Center, China Geological Survey, Beijing 100037, China;
    2. National Geological Archives of China, Beijing 100037, China;
    3. Beijing Institute of Geology and Mineral Resources, Beijing 100012, China;
    4. Mineral Exploration Technical Guidance Center of Ministry of Land and Resources, Beijing 100083, China;
    5. Chengdu Center of China Geological Survey, Chengdu 610081, China
  • Received:2017-09-25 Online:2018-05-26 Published:2018-05-26
  • Supported by:
    Supported by Program of Superseding Resources Prospecting in Crisis Mines in China (20089927)

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Abstract: The Baoshan Cu-Pb-Zn polymetallic deposit is located in the central Nanling mineralization zone, and is an important type of deposit in the Nanling polymetallic deposit belt. The Baoshan Cu-Pb-Zn polymetallic deposit shows the horizontal mineralized zoning clearly. Its zonation is comprised of Cu -Mo belt and Pb-Zn-Ag belt at the mining area from the middle to the periphery. In this research, the mineralogical study and electronic detection tests on the garnets, diopsides, pyrites, and sphalerites in the Baoshan Cu-Pb-Zn polymetallic deposits were conducted, and the mineralization was summarized as the skarn, retrograde and oxide, and sulphide stages. The garnet endmembers are mainly andradite(23.48%-90.39%)and followed by grossular(5.81%-71.27%);Pyroxenes are mainly diopsides(Di61-95). The mineral characteristics of garnet and diopside in the skarn are similar to those in typical Cu skarn all over the world. The composition of the pyrite and sphalerite in the sulfides of the Baoshan Cu-Pb-Zn polymetallic deposit indicates that the sulfides in the Baoshan Cu-Pb-Zn polymetallic deposits were from a magmatic hydrothermal source, and is characterized by a higher temperature in the northeast than in the southwest.

Key words: mineralogy, electron microprobe analysis, Baoshan Cu-Pb-Zn polymetallic deposit, Nanling metallogenic belt

CLC Number: 

  • P618.4
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