J4 ›› 2012, Vol. 42 ›› Issue (1): 77-81.

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Multiple Mineralization of Shibaqinghao Gold Deposit in Inner Mongolia: Evidences from the Compositions of Pyrite

LIANG Yi-hong1| ZHANG Hong-ying2|QIN Ya1|LIU Xue-song3   

  1. 1.College of Earth Sciences, Jilin University, Changchun130061,China；
    2.College of Mechanical Science and Engineering, Jilin University, Changchun130022, China；
    3.Museum of Geology, Jilin University| Changchun130061, China
  • Received:2010-04-15 Online:2012-01-26 Published:2012-01-26

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Abstract:

Through determination of values of ΔFe/ΔS and Co/Ni of pyrite, two types of ore bodies  were distinguished in Shibaqinghao gold deposit, Inner Mongolia, which are myloniteand quartz vein ore bodies, respectively. The pyrites in mylonite ore body are poor in Fe and S with Co/Ni ratios less than 1; whereas the pyrites in quartz vein ore body are poor in Fe but rich in S with Co/Ni ratios greater than 1. These features are consistent with S and Pb isotope compositions of the two types of ore bodies; the former type may represent metamorphic thermal solution related metallogeny in association with ductile shear deformation, and the later maybe products of magmatism related metallogeny. Our results prove that Shibaqinghao gold deposit formed from a multiple stages of mineralization, and thus support a previously proposed point that “the deposit was controlled by structures of different stages and levels”.

Key words: gold mines, ductile shear zone, multiple mineralization

CLC Number: 

  • P618.51
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