Sm-Nd Dating for Antimony Mineralization in the Xikuangshan Deposit, Hunan, China

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  • HU Xiongwei
    Yichang Institute of Geology and Mineral Resources, Chinese Academy of Geological Sciences
  • PEI Rongfu
    Geological Survey of Japan
  • ZHOU Su
    Institue of Mineral Resources, Chinese Academy of Geological Sciences

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Other Title
  • 中国湖南省錫鉱山鉱床のアンチモニー鉱化作用のSm-Nd年代
  • Sm Nd Dating for Antimony Mineralizatio

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Abstract

The Xikuangshan mine is situated in central Hunan, China, and is the largest antimony deposit in the world. The mineralization is hosted in Middle-Upper Devonian carbonate rocks. Sm-Nd isotope analysis of six calcite samples and one stibnite sample gives an isochron age of 156.3±12 Ma. with an initial143Nd/144Nd ratio of 0.51164 and an εNd value of -15.6. This age demonstrates that the antimony mineralization probably took place during the Jurassic period, simultaneously with the folding events in the Xikuangshan district, which is consistent with the geological inferences of the mineralization age in central Hunan.

Journal

  • Shigen-Chishitsu

    Shigen-Chishitsu 46 (258), 227-231, 1996

    The Society of Resource Geology

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