Classification and type association of tin deposits in Southeast Yunnan Tin Belt |
| |
| Authors: | Yang Shiyu |
| |
| Institution: | (1) Department of Geology, Kunming Institute of Technology, Kunming, Yunnan |
| |
| 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. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
