Science in China Series D: Earth Sciences

, Volume 43, Issue 1, pp 50–62 | Cite as

The Lanmuchang Tl deposit and its environmental geochemistry

  • Zhong Zhang
  • Baogui Zhang
  • Yecai Chen
  • Xingmao Zhang


Tl is a dispersed element and it seldom occurs in the form of independent minerals.The world annual production of Tl is about 13 ton, most of which is by-product separated from non-ferrous metal products. Lanmuchang is the only large-size independent Tl deposit in the world. Bio-enrichment and hydrothermal reworking are the two important metallogenic mechanisms of this Tl deposit. Samples of plant and animal organs and villagers’ urine as well as hair and nail (toenail) samples from the Tl mining district were analyzed. Analytical results showed that the contents of Tl, Hg and As are high, suggesting that the residents and villagers in the mining district have been affected by Tl-Hg pollution, and on the other hand, they can serve as the guidelines for ore prospecting. The contents of Tl, Hg, and As in human beings and other organic bodies depend largely on the background values of these metals in rock, ore, soil and water.


Tl deposit environmental geochemistry of Hg Tl and As metallogenesis by bio-enrichment metallogenesis by hydrothermal reworking indicators Tl Hg and As pollution 


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  1. 1.
    Zhang Zhong, Zhang Baogui, Thallium in low temperature ore deposits, China, Chinese Journal of Geochemistry, 1996, 15(1): 87.CrossRefGoogle Scholar
  2. 2.
    Zhang Zhong, Long Jiangping, Zhang Baogui, The existing forms, metallogenic model and ore-searching indicators of Tl in As-, Hg-, Sb- and Au-deposits, Geological Review (in Chinese), 1995, 41(4): 363.Google Scholar
  3. 3.
    Zhang Zhong, Zhang Xingmao, Zhang Baogui, Element geochemistry and metallogenic model of the Nanhua As-Tl deposit, Geochimica (in Chinese), 1998, 27(3): 269.Google Scholar
  4. 4.
    Zhang Zhong, Zhang Baogui, Long Jiangping et al., Thallium pollution associated with mining of thallium deposits: Sci- ence in China, Series D, 1998, 41(1): 75.Google Scholar
  5. 5.
    Zhang Zhong, Zhang Baogui, Long Jiangping et al., Study on thallium environmental pollution in the process of mining of thallium deposits in China, Science in China, Series D, 1997, 27(4): 331.Google Scholar
  6. 6.
    Zhang Baogui, Zhang Zhong, Long Jiangping et al., The problems of low-temperature ore prospecting: Developments in Geochemistry (in The Proceedings of the 30th International Congress on Geology, Guiyang: Guizhou People’s Publishing House, 1996, 22–26.Google Scholar
  7. 7.
    Li Guizhu, A preliminary study on the chemical composition of ores from the Lanmuchang Hg-Tl deposit and the existing forms of Tl, Xingren, Guizhou Geology (in Chinese), 1996, 13(1): 24.Google Scholar
  8. 8.
    Yang Min, Xu Changjiang (translators), Hg and methyl Hg in danger groups of human beings in the southern coast of the Atlantic (in Chinese), a Spain: Overseas Environmental Science and Technology, 1995, (2), 62.Google Scholar
  9. 9.
    Jiang Xingjin, Purification and Sterilization of Potable Water, Beijing: China Environmental Science Press, 1989, 1–63.Google Scholar
  10. 10.
    Tu Guangchi, Zhang Baogui, The Characteristics of Southwest China’s minerogenetic province of low-temperature hydrothermally reworked ore deposits: developments in geochemistry, Proceedings of the 30th International Congress on Geology, Guiyang: Guizhou People’s Publishing House, 1996, 1–4.Google Scholar
  11. 11.
    Tu Guangchi, On the composition of unusually super-large ore deposits and the unique features of their geological setting and forming mechanism—A preliminary study on unusually super-large ore deposits: Science in China (in Chinese), Series D, 1998, 28 (supp.): 1.Google Scholar
  12. 12.
    Zhang Zhijian, Zhang Wenhuai, Study on the organic ore-forming fluid of the Lannigou Au (Hg, Sb) deposit, Guizhou Province, Mineral Deposits (in Chinese), 1998, 17(4): 343.Google Scholar
  13. 13.
    Regional Geological Brigade of Guizhou Bureau of Geology and Mineral Resources, A report on regional geological investigation of the People’s Republic of China (1: 200000) for the Xingren and Anlong regions, Guiyang: Geological Brigade of Guizhou Province, 1980, 211–212.Google Scholar
  14. 14.
    Zhang Zhong, Long Jiangping, New advance in the study of the Nanhua Tl-rich realgar deposit: Geochemical studies of Ore Deposits, in The 9th International Symposium on the Genesis of Ore Deposits, Beijing, Seismological Press, 1994, 22–26.Google Scholar
  15. 15.
    Xuan Zhiqiang, A brief account of As resources in China, Geology of Chemical Mineral Resources (in Chinese), 1998, 20(3): 205.Google Scholar

Copyright information

© Science in China Press 2000

Authors and Affiliations

  • Zhong Zhang
    • 1
  • Baogui Zhang
    • 1
  • Yecai Chen
    • 1
  • Xingmao Zhang
    • 1
  1. 1.Institute of GeochemistryChinese Academy of SciencesGuiyangChina

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