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Emplacement age and PGE geochemistry of lamprophyres in the Laowangzhai gold deposit, Yunnan, SW China

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Abstract

Widely-distributed lamprophyres in the Laowangzhai gold deposit were associated closely with gold ores. Phlogopite40Ar/39Ar dating suggests that the emplacement age of lamprophyric magma ranges from (30.8±0.4) to (34.3±0.2) Ma, and gold mineralization took place at (26.4±0.2) Ma. PGE geochemical tracing indicates that gold in the gold deposit did not come from the primitive lamprophyric magma. The tempo-spatial paragenesis between lamprophyres and mesothermal gold deposits along the Jinsha-Red River belt may be attributed to the fact that they formed in the same tectonic setting.

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Authors and Affiliations

  1. Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, 510640, Guangzhou, China

    Wang Jianghai & Xie Guanghong

  2. Institute of Geochemistry, Chinese Academy of Sciences, 550002, Guiyang, China

    Qi Liang

  3. Department of Earth & Space Sciences, University of California, 90095, Los Angeles, CA, USA

    Yin An

Authors
  1. Wang Jianghai
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  2. Qi Liang
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  3. Yin An
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  4. Xie Guanghong
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Correspondence to Wang Jianghai.

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Wang, J., Qi, L., Yin, A. et al. Emplacement age and PGE geochemistry of lamprophyres in the Laowangzhai gold deposit, Yunnan, SW China. Sci. China Ser. D-Earth Sci. 44 (Suppl 1), 146–154 (2001). https://doi.org/10.1007/BF02911982

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  • DOI: https://doi.org/10.1007/BF02911982

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