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.