Mineralium Deposita

, Volume 46, Issue 2, pp 171–185 | Cite as

Re–Os and 40Ar/39Ar ages of the Jiguanshan porphyry Mo deposit, Xilamulun metallogenic belt, NE China, and constraints on mineralization events

  • Huaying Wu
  • Lianchang Zhang
  • Bo Wan
  • Zhiguang Chen
  • Peng Xiang
  • Franco Pirajno
  • Andao Du
  • Wenjun Qu


The large Jiguanshan porphyry Mo deposit, with more than 100 Mt of ore and grades ranging from 0.08% to 0.11%, is located in the newly identified Xilamulun metallogenic belt along the northern margin of the North China Craton. The Mo mineralization is predominantly disseminated in the host granite porphyry, but locally occurs as stockworks in lithic tuff and rhyolitic rocks. 40Ar/39Ar dates of samples from groundmass material in the host granite porphyry, post-ore diabase, and quartz porphyry dikes show plateau ages of 155.1 ± 1.9, 149.4 ± 0.9, and 147.6 ± 0.9 Ma, with inverse isochron ages of 156.0 ± 1.8, 149.3 ± 1.3, and 148.3 ± 1.2 Ma, respectively. Seven samples of disseminated molybdenite yielded a weighted average 187Re-187Os age of 155.3 ± 0.9 Ma, whereas six veinlet-type molybdenite samples yielded a weighted average 187Re-187Os age of 153.0 ± 0.9 Ma, providing direct timing constraints for the Mo mineralization at 153–155 Ma. The regional geological setting together with the emplacement of post-ore diabase and quartz porphyry dikes in the Jiguanshan deposit, are indicative of an extensional regime in Late Jurassic, which was probably linked to lithospheric extension in northeast China.


Re–Os Molybdenite 40Ar/39Ar dates Jiguanshan porphyry Mo deposit Xilamulun metallogenic belt Northeast China 


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Copyright information

© Springer-Verlag 2010

Authors and Affiliations

  • Huaying Wu
    • 1
    • 2
  • Lianchang Zhang
    • 1
  • Bo Wan
    • 1
  • Zhiguang Chen
    • 1
    • 2
  • Peng Xiang
    • 1
    • 2
  • Franco Pirajno
    • 3
  • Andao Du
    • 4
  • Wenjun Qu
    • 4
  1. 1.Key Laboratory of Mineral Resources, Institute of Geology and GeophysicsChinese Academy of SciencesBeijingPeople’s Republic of China
  2. 2.Graduate University of Chinese Academy of SciencesBeijingPeople’s Republic of China
  3. 3.School of Earth and EnvironmentUniversity of Western AustraliaCrawleyAustralia
  4. 4.National Research Center of GeoanalysisBeijingPeople’s Republic of China

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