Geochronology of the Xingshan molybdenum deposit, Jilin Province, NE China, and its Hf isotope significance

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  • Lingli Zhou, Denmark
  • Q.-D. Zeng, Chinese Academy of Sciences
  • ,
  • J.-M. Liu, Chinese Academy of Sciences
  • ,
  • Henrik Friis
  • Z.-L. Zhang, CHN Railway Resources Exploration Company
  • ,
  • X.-X. Duan, Chinese Academy of Sciences
The Xingshan porphyry Mo deposit is located in the Lesser Xing'an Range-Zhangguangcai Range metallogenic belt, NE China. Mineralization occurred in granodioritic porphyry and monzogranite, which have zircon U-Pb ages of 171.7±2.2Ma and 170.9±4.6Ma, respectively. Molybdenite Re-Os dating indicates that Mo mineralization occurred at 167.3±2.5Ma. These geochronological data suggest that the magmatic and hydrothermal activities of the Xingshan Mo deposit happened during the Middle Jurassic in Mesozoic. Positive ε values (6.2-11.6) and young T (473-826Ma) of the monzogranite (XS-3) and granodioritic porphyry (XS-5) indicate that the source materials of Xingshan ore-bearing rocks are the juvenile crust, which mainly accreted on the Songnen block during the Meso-Neoproterozoic. Xingshan porphyry Mo deposits resulted from the magmatism and tectonism induced by the subduction of Paleo-Pacific Ocean.
Original languageEnglish
JournalJournal of Asian Earth Sciences
Pages (from-to)58-70
Number of pages13
Publication statusPublished - 5 Oct 2013

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