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GE Zhanlin, ZHENG Yanrong, HAO Di, ZHANG Xiaoxing, LI Xiaodong, HUA Lipeng, JING Yongkang. 2020. On the Geological Characteristics and Genesis of Yangwuchang Tungsten (Gold) Deposit in the Yangxie-Fengbeihe Metallogenetic Belt, East Qinling. Northwestern Geology, 53(3): 140-152. doi: 10.19751/j.cnki.61-1149/p.2020.03.012
Citation: GE Zhanlin, ZHENG Yanrong, HAO Di, ZHANG Xiaoxing, LI Xiaodong, HUA Lipeng, JING Yongkang. 2020. On the Geological Characteristics and Genesis of Yangwuchang Tungsten (Gold) Deposit in the Yangxie-Fengbeihe Metallogenetic Belt, East Qinling. Northwestern Geology, 53(3): 140-152. doi: 10.19751/j.cnki.61-1149/p.2020.03.012
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On the Geological Characteristics and Genesis of Yangwuchang Tungsten (Gold) Deposit in the Yangxie-Fengbeihe Metallogenetic Belt, East Qinling

  • Xi'an Center of Mineral Resources Survey, China Geological Survey(No.5 Gold Geological Party of PAPF), Xi'an 710100, Shaanxi, China

Received Date:  02 December 2019
Revised Date:  11 May 2020
    Abstract
  • The Yangwuchang tungsten (gold) deposit is located in the eastern part of the Yangxie-Fengbeihe gold-tungsten metallogenetic belt, east Qinling. Through field survey, ore identification and comprehensive studies, this paper clarified the geological characteristics and ore-controlling factors of the deposit, discussed genesis of ore deposit, and preliminarily established the trinity prospecting prediction model, which provides a direction for further W-Au prospecting in Yangxie area. The results show that the ore bodies occur in the NE-NEE faults in the Shangdanfault zone, and are hosted in the Neoproterozoic Yangxie gneiss suite. The metal minerals are medium-high temperature mineral assemblages of pyrite, wolframite, scheelite, chalcopyrite, sphalerite, galena and tetrahedrite. Ore-forming process includes hydrothermal mineralization and supergene periods. The former can be divided into three metallogenic stages: quartz-fine-grained pyrite stage, quartz-wolframite-scheelite-polymetallic sulfide stage and quartz-calcite-sericite stage. Wall-rock alteration is mainly silicification, pyritization and muscovitization. The genesis of this deposit is considered to be a post-magmatic hydrothermal deposit, controlled by the Indosinian granite, faults and wall rock.
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