Sulfur and Lead Isotope Compositions and Tracing of Copper Deposits on the Western Border of the Lanping Basin , Yunnan Province
详细信息
- 责任者：Zhang Jinrang (State Key Laboratory of Ore Deposit Geochemistry ; Institute of Geochemistry ; Chinese Academy of Sciences ; Guiyang 550002 ; China) ; Wen Hanjie
- 刊名：Geochimica
- 出版年：2012
- 卷期：41(2)
- 关键词：铜矿 ; copper ores ; 兰坪盆地 ; Lanping Basin
- 页码：p.166-180
- 图表：5 illus., 3 tables, 43 refs.
- 分类号：1001
- issnNo：ISSN0379-1726
- isbnNo：CN44-1398/P
摘要
In order to trace source of ore-forming materials of these deposits, four representative deposits (Jinman, Shuixie, Kedengjian and Liancheng) were selected to analyze sulfur and lead isotopic compositions. Pb isotopic compositions show very narrow variations and mostly fall within the range of the sedimentary rock lead, suggesting that lead in these vein-type Cu-polymetallic deposits is mostly derived from the basement of the basin. Sulfur isotope analysis show that the reduced sulfur of these vein-type Cu-polymetallic deposits mainly come from the strata sulfate. However, like Pb isotopes, the Jinman and Liancheng deposits have more complicated S isotopic compositions, implying additional deep S source.
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