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DING Kun, WANG Ruiting, WANG Zhihui, LIU Kai, SHEN Ximao. 2022. Geological Characteristics and Genesis of the Wangjiaping Gold Deposit in Zhashui-Shanyang Ore Concentration area of South Qinling. Northwestern Geology, 55(1): 167-178. doi: 10.19751/j.cnki.61-1149/p.2022.01.013
Citation: DING Kun, WANG Ruiting, WANG Zhihui, LIU Kai, SHEN Ximao. 2022. Geological Characteristics and Genesis of the Wangjiaping Gold Deposit in Zhashui-Shanyang Ore Concentration area of South Qinling. Northwestern Geology, 55(1): 167-178. doi: 10.19751/j.cnki.61-1149/p.2022.01.013
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Geological Characteristics and Genesis of the Wangjiaping Gold Deposit in Zhashui-Shanyang Ore Concentration area of South Qinling

  • 1. Shaanxi Railway Institute, Weinan 714099, Shaanxi, China;

  • 2. Shaanxi Provincial Engineering and Technology Research Center for Comprehensive Utilization of Mineral Resources, Xi'an 710054, Shaanxi, China;

  • 3. Northwest Geological Exploration for Nonferrous Metals, Xi'an 710054, Shaanxi, China;

  • 4. Shcool of Earth Science and Resources, Chang'an University, Xi'an 710054, Shaanxi, China;

  • 5. No. 713 Geological Team, Northwest Bureau of Geological Exploration for Nonferrous Metals, Shangluo 726000, Shaanxi, China;

  • 6. Xi'an Northwest Research Institute of Nonferrous Metals Limited Company, Xi'an 710054, Shaanxi, China

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Received Date:  17 May 2021
Revised Date:  15 July 2021
    Abstract
  • The Wangjiaping gold deposit is located in the east of Zhashui-Shanyang ore concentration area in South Qinling.The gold ore body mainly lies in the sedimentary strata of the upper Devonian Xinghongpu Formation, with pyrite being the main metal mineral. Gold mineralization are closely related to pyrite and orpiment. In this paper, LA-ICPMS and LA-MC-ICPMS were used to study the trace elements and sulfur isotopes of sulfide in different stages of mineralization.The results show that the Co/Ni ratios of pyrite in the middle stage of mineralization range from 0.003 to 1.1, most of which are less than 1, excluding volcanic origin. In addition, The Co/Ni ratios of pyrite in the late stage of mineralization range from 0.02 to 5.87, suggesting that pyrite in this stage is related to magmatism and sedimentation process. The S isotope results show that the δ34S value of early sulfide ranges from -28.5‰ to 20.33‰. The sulfide from intermediate stage ranges from -28.5‰ to -19.95‰,whereas the late sulfide ranges from 11.91‰ to 20.33‰,suggesting an inhomogeneous sulfur isotopic composition and an obvious multi-source characteristics. Hence, it is inferred that the sulfur may be derived from the mixture of sulfur and host rock sulfur. Therefore, the Wangjiaping deposit is a Carlin-type gold deposit.It has great significance for the future prospecting of Carlin-type gold deposit in Zhashui-Shanyang ore concentration area.
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