Journal of Jilin University(Earth Science Edition) ›› 2023, Vol. 53 ›› Issue (3): 767-784.doi: 10.13278/j.cnki.jjuese.20210331

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Zircon Trace Element Geochemical Characteristics of Ore-Bearing Igneous Rocks from Duhuangling High-Sulfidation Epithermal Gold Deposit and Its Geological Significance, Yanji Area, Jilin Province

Chai Peng 1, 2, 3, 4, Sun Jinggui 3, 4, Yuan Lingling 1, 2, Men Lanjing 5   

  1. 1. Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China
    2. Laboratory of Deep Earth Sciences and Technology, Ministry of Natural Resources, Beijing 100037, China
    3. College of Earth Sciences, Jilin University, Changchun 130061, China
    4. Key Laboratory of Mineral Resources Evaluation in Northeast Asia, Ministry of Natural Resources, Changchun 130061, China
    5.  School of Prospecting and Surveying Engineering, Changchun Institute of Technology, Changchun 130021, China
  • Received:2021-10-21 Online:2023-05-26 Published:2023-05-26
  • Supported by:
    Supported by the National Natural Science Foundation of China (41973045, 41602084), the National Key R&D Program of China (2018YFE0204202), the  Projects of China Geological Survey (DD20230213, DD20221647, DD20190685), the Basic Science and Technology Research Funding of the Institute of Geology, CAGS (J1905) and the Opening Foundation of Key Laboratory of Mineral Resources Evaluation in Northeast Asia, Ministry of Natural Resources (DBY-KF-18-02)

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Abstract:  Duhuangling gold deposit is one of the high-sulphidation epithermal gold deposits in  Yanji area, northeast China, where a large number of Early Cretaceous igneous rocks are developed. In order to understand the magmatism, magma sources and ore-forming condition of  Duhuangling gold deposit, integrated with the results of previous research, we conducted trace element analyses of zircons from the ore-bearing quartz diorite, granodiorite and granodiorite porphyry in ore district. The majority of zircons possess high Th/U values (>0.1), and their chondrite-normalized REE patterns of all zircons are characterized by HREE enrichment relative to LREE and MREE with distinctive positive Ce and negative Eu anomalies, which are typical of magmatic zircons. All the zircons yield different Ti-in-zircon temperatures, with most zircon crystals between 700 to 900 ℃. Zircon trace elements provide that the ore-bearing rocks were derived from the partial melting of the lower crustal materials and formed in the arc environment related to the plate subduction. In addition, the zircon grains have higher Ce4+/Ce3+ values and lower temperature in the melt of ore-forming granodiorite porphyry than pre-ore rocks, indicating that granodiorite porphyry has high oxygen fugacity, water contents and ore-forming potential. Therefore, the difference in magmatic oxygen fugacity and water contents may be the reasons why the quartz diorite and granodiorite are not mineralized

Key words: Yanji area, Jilin Province, high-sulfidation epithermal gold deposit, Duhuangling gold deposit, zircon, trace element geochemistry

CLC Number: 

  • P59
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