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Dating of sediment-hosted disseminated-type gold deposit by using40Ar/39Ar laser probe: A case study of Changkeng large-scale gold deposit, China

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Chinese Science Bulletin

Abstract

Hydrothermal clay minerals that formed in the main metallogenic stage of the Changkeng disseminated-type gold deposit in central Guangdong were analyzed by the40Ar/39Ar laser probe. The results give Ar-Ar isochron ages of 109.9 ±1.4 to 110.1 ±1.3 Ma, which are 30 to 50 Ma older than the age of silver ore bodies in the deposit. Both gold and silver mineralizations were not related to hidden granite batholith in the mining district, but probably related to evolution of sedimentary basins. This study shows that the40Ar/39Ar laser probe is a sound dating tool applicable to sediment-hosted disseminated-type gold deposit.

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Authors and Affiliations

  1. Department of Earth Sciences, Sun Yat-sen University, 510275, Guangzhou, China

    Xiaoming Sun, Min Wang, Ting Xue, Kai Sun & Binghui Chen

  2. State Key Laboratory of Mineral Deposit Research, 210093, Nanjing, China

    Xiaoming Sun

  3. Institute of Geology and Geophysics, Chinese Academy of Sciences, 100101, Beijing, China

    Wen Chen

  4. Institute of Geology, Chinese Academy of Geological Sciences, 100037, Beijing, China

    Wen Chen

Authors
  1. Xiaoming Sun
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  2. Wen Chen
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  3. Min Wang
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  4. Ting Xue
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  5. Kai Sun
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  6. Binghui Chen
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Correspondence to Xiaoming Sun.

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Sun, X., Chen, W., Wang, M. et al. Dating of sediment-hosted disseminated-type gold deposit by using40Ar/39Ar laser probe: A case study of Changkeng large-scale gold deposit, China. Chin.Sci.Bull. 48, 1887–1891 (2003). https://doi.org/10.1007/BF03184073

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  • DOI: https://doi.org/10.1007/BF03184073

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