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Science in China Series D: Earth Sciences

, Volume 44, Supplement 1, pp 146–154 | Cite as

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

  • Wang Jianghai 
  • Qi Liang 
  • Yin An 
  • Xie Guanghong 
Article

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.

Keywords

thermochronology PGE geochemistry lamprophyre Laowangzhai gold deposit Yunnan 

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Copyright information

© Science in China Press 2001

Authors and Affiliations

  • Wang Jianghai 
    • 1
  • Qi Liang 
    • 2
  • Yin An 
    • 3
  • Xie Guanghong 
    • 1
  1. 1.Guangzhou Institute of GeochemistryChinese Academy of SciencesGuangzhouChina
  2. 2.Institute of GeochemistryChinese Academy of SciencesGuiyangChina
  3. 3.Department of Earth & Space SciencesUniversity of CaliforniaLos AngelesUSA

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