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WU Jun-jie, CHEN Zheng-le, FU Lei, PAN Jia-yong, HAN Feng-bin, SHEN Tao. H-O-S-Pb ISOTOPIC COMPONENTS OF THE LIANGSHAN MOLYBDENUM DEPOSIT IN XINYU, JIANGXI PROVINCE AND THEIR IMPLICATIONS FOR THE ORE FORMING PROCESS[J]. Journal of Geomechanics, 2016, 22(2): 325-337.
Citation: WU Jun-jie, CHEN Zheng-le, FU Lei, PAN Jia-yong, HAN Feng-bin, SHEN Tao. H-O-S-Pb ISOTOPIC COMPONENTS OF THE LIANGSHAN MOLYBDENUM DEPOSIT IN XINYU, JIANGXI PROVINCE AND THEIR IMPLICATIONS FOR THE ORE FORMING PROCESS[J]. Journal of Geomechanics, 2016, 22(2): 325-337.
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H-O-S-Pb ISOTOPIC COMPONENTS OF THE LIANGSHAN MOLYBDENUM DEPOSIT IN XINYU, JIANGXI PROVINCE AND THEIR IMPLICATIONS FOR THE ORE FORMING PROCESS

  • 1.

    East China Institute of Technology, Nanchang 330013, China

  • 2.

    Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China

Received Date:  02 November 2015
Publish Date:  25 June 2016
    Abstract

  • On the basis of predecessors' research results, We study the geological characteristics of the Liangshan molybdenum deposit in Jiangxi province and test H-O-S-Pb isotopic components of the molybdenum stone samples in quartz vein systematically, and then discusse the metallogenic fluid properties as well as the source of ore-forming materials of the molybdenum deposit. The δD of the ore-forming fluids are between -61‰~-57.9‰, with the average of -59.1‰; and the δ18OV-SMOW of the ore-forming fluid are between 7.1‰~10.5‰, with the average of 9.2‰; and the δ18OH2O of the ore-foring fluids are between -3.32‰~-0.52‰, with the average of -1.52‰, which indicate that the ore-forming fluid has the characteristics of magmatic water and meteoric water mixed fluid. The δ34SV-CDT of the sulfide mineral are between -1.8‰~2.6‰, with the range of 4.4‰ and the average of 1.12‰, of which the δ34SV-CDT of the pyrite are between -1.8‰~2.6‰ and the δ34SV-CDT of the molybdenite are between 0.8‰~2.3‰. The sulfur isotope values are smaller positive which show the characteristics of typical magmatic sulfur. The values of 206Pb/204Pb of the ore samples are between 17.555~19.474, and the values of 207Pb/204Pb are between 15.486~ 15.768, as well as the values of 208Pb/204Pb are between 37.942~39.943, with the μ values of 9.35~9.7 and the ω values of 37.06~38.31, as well as the Th/U values of 3.8~3.96, which indicate the ore are rich in mixed lead, and the ore-forming material sources are mixed. The Liangshan molybdenum ore should belong to the magmatic hydrothermal type and quartz vein type deposit, which is a product of the metal mineralization outbreak during the intraplate tectonic evolution of south China plate in Mesozoic.

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