Chinese Journal of Geochemistry

, Volume 10, Issue 1, pp 21–35

Classification and type association of tin deposits in Southeast Yunnan Tin Belt

  • Yang Shiyu
Article

DOI: 10.1007/BF02843295

Cite this article as:
Shiyu, Y. Chin. J. of Geochem. (1991) 10: 21. doi:10.1007/BF02843295

Abstract

Pneumato-hypothermal to meso-epithermal tin-polymetallic (W, Be, Bi, Mo, Cu, Pb, Zn and Ag) deposits, dominated by cassiterite-sulfide type and cassiterite-quartz type, are extensively developed around granite intrusives in the Southeast Yunnan Tin Belt genetically related to Yenshanian tecto-magmatism. The deposits are grouped into two classes, four associations and fourteen types according to the classification scheme proposed by the author to reflect their geological and genetic characteristics as well as economic implications. The deposits are arranged in an apparent zonal pattern from the granite body outwards in terms of “association” (cassiterite-feldspar → cassiterite-quartz → cassiterite sulfide), typical ore-forming metals (Sn-W-Be-Mo-Nb-Ta-Tr → SnW-Cu-In → Sn-Pb-Zn-As-Cd), and formation conditions (pneumato-hypothermal → hypothermalmesothermal → mesothermal-epithermal), although such distribution pattern may be more or less complicated by local specialities of granite petrochemistry, host rock lithology and structure.

Copyright information

© Institute of Geochemistry, Chinese Academy of Sciences 1991

Authors and Affiliations

  • Yang Shiyu
    • 1
  1. 1.Department of GeologyKunming Institute of TechnologyYunnan

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