Journal of Jilin University(Earth Science Edition) ›› 2015, Vol. 45 ›› Issue (4): 1098-1111.doi: 10.13278/j.cnki.jjuese.201504113

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Petrogeochemical Feature and Geochronology of the Ore-Forming Porphyry in Wheerclt Molybdenum Deposit in Abag Banner, Inner Mongolia

Yu Reng'an1,2, Tang Yongxiang3, Zhang Feng2, Xie Yu2, Zhang Chao2, Guo Hu2   

  1. 1. School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China;
    2. Tianjin Centre of China Geological Survey, Tianjin 300170, China;
    3. Tianjin Geothermal Exploration and Development-Designing Institute, Tianjin 300250, China
  • Received:2014-11-12 Published:2015-07-26

Abstract:

The newly discovered Wheerclt molybdenum deposit is located in the Erlian-Dongwuqi molybdenum metallogenic belt. Its geochemical characteristics and U-Pb age have been researched in this paper. The results show that ore-forming porphyry belongs to a peraluminous and high potassium calcium alkaline serie. The geological features, such as enrichment of large-ion lithophile elements (LILE) and the depletion of high field strength elements (HFSE), show a similar rock combination as Nanling type. U-Pb dating of the zircon from the porphyry by LA-ICP-MS indicates that the metallogenesis related granitic porphyries are formed in Middle Jurassic ((160±1) Ma) in Wheerclt molybdenum deposit. It is deduced that Wheerclt porphyry deposit was formed in Early Yanshan Period. According to a comprehensive research,the formation of Wheerclt porphyry molybdenum deposit was formed in a post-collisional setting.

Key words: Wheerclt, porphyry molybdenum, geochemistry, zircon U-Pb age

CLC Number: 

  • P595

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