Volume 25 Issue S1
May  2019
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Article Navigation >  Journal of Geomechanics  > 2019  >  25(S1): 119-123
CHEN Jianhang, LIU Xuelong, LI Zhenhuan, et al., 2019. MIGRATION CHARACTERISTICS OF ORE-FORMING ELEMENTS DURING MINERALIZATION AND ALTERATION OF TONGCHANGGOU PORPHYRY COPPER-MOLYBDENUM DEPOSIT, YUNNAN PROVINCE. Journal of Geomechanics, 25 (S1): 119-123. DOI: 10.12090/j.issn.1006-6616.2019.25.S1.020
Citation: CHEN Jianhang, LIU Xuelong, LI Zhenhuan, et al., 2019. MIGRATION CHARACTERISTICS OF ORE-FORMING ELEMENTS DURING MINERALIZATION AND ALTERATION OF TONGCHANGGOU PORPHYRY COPPER-MOLYBDENUM DEPOSIT, YUNNAN PROVINCE. Journal of Geomechanics, 25 (S1): 119-123. DOI: 10.12090/j.issn.1006-6616.2019.25.S1.020
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MIGRATION CHARACTERISTICS OF ORE-FORMING ELEMENTS DURING MINERALIZATION AND ALTERATION OF TONGCHANGGOU PORPHYRY COPPER-MOLYBDENUM DEPOSIT, YUNNAN PROVINCE

doi: 10.12090/j.issn.1006-6616.2019.25.S1.020

  • Kunming University of Science and Technology, Kunming 650093, Yunnan, China

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  • Published: 2019-05-01
    Abstract
  • The porphyry Cu-Mo molybdenum ore deposit is a typical example of Mo polymetallic mineralization of Geza arc in the late Yanshan period. Based on the petrographic study of this deposit, TiO2 was selected as the inert component in the process of alteration and the element migration was quantitatively analyzed by using Gresens equation. The migration characteristics of major elements show that Al2O3, K2O, Na2O, P2O5 and SiO2 continue to immigrate in the potassium silicate alteration stage and the sericitization stage of quartz stage, and that Fe2O3, MgO and CaO immigrate in the prophylitic stage. Trace elements showed significant migration of Mo, Ba, W, Ra, Nb, Ta and LREE in the potassium silicate salinization stage, and the enrichment of Ba, W and Mo was significantly correlated. Pb and Zn were enriched in quartz-sericite alteration stage, while Cu was enriched in prophylitic stage. The study on mineralization alteration and migration characteristics of ore-forming elements in Tongchanggou porphyry copper-molybdenum ore deposit has important reference significance for the establishment of deep geochemical exploration index, metallogenic information and determination of ore-body boundary in this area.

     

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