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川滇黔铅锌矿集区位于扬子地块西南缘，发育有400多个矿床（点），铅锌矿石储量超2亿t，Pb平均品位(质量分数)达5%，Zn平均品位达10%。矿体主要呈似层状、脉状赋存于震旦系—二叠系碳酸盐岩地层中，为碳酸盐岩容矿后生铅锌矿床。文中通过综合分析川滇黔矿集区21个典型矿床的SPb多元同位素数据，示踪成矿元素主要来源，并为进一步找矿提供指导。研究区大部分铅锌矿床硫化物的δ34S值介于9.0‰～28.6‰之间，与震旦系—二叠系地层中海水硫酸盐δ34S值（+8.0‰到+38.7‰）相似，暗示研究区铅锌矿床硫化物中的S主要来源于赋矿地层中海水硫酸盐，TSR作用是还原硫的主要生成机制。部分矿床中，含硫有机质热解可能是还原硫的另外一种生成机制。该区硫化物Pb同位素组成显示4种不同的成矿物质来源模式：（1）唐家等矿床Pb主要来源于基底岩石；（2）金沙厂、乐马厂、乐红等矿床Pb主要来源于基底富放射性成因Pb的岩层及盖层沉积岩中富有机质地层；（3）会泽、天宝山、茂租、银厂沟、大梁子、云炉河、毛坪、富乐、杉树林、天桥等矿床Pb主要来源于基底岩石和沉积盖层中多源流体的混合，峨眉山玄武岩可能提供少量成矿物质；（4）青山、赤普、银厂坡、筲箕湾、板板桥等矿床Pb主要来源于沉积盖层，基底岩石提供了部分成矿物质。典型矿床的SPb同位素组成特征表明成矿物质具有混合来源的特征。
The lead-zinc concentrate area in Sichuan, Yunnan and Guizhou is located in the southwestern margin of the Yangtze block and has developed over 400 deposits (points). The lead-zinc ore reserves exceeded 200 million tons, the average Pb grade (mass fraction) reached 5% and the average Zn grade reached 10 %. The ore body is predominantly lamellar and vein-shaped in the Sinian-Permian carbonate stratum, which is a carbonate-hosted post-epoch lead-zinc deposit. Through comprehensive analysis of SPb multivariate isotope data of 21 typical deposits in the Sichuan, Yunnan and Guizhou provinces, the main source of ore-forming elements is traced and the guidance for further prospecting is provided. The δ34S value of sulfide in most lead-zinc deposits in the study area ranged from 9.0 ‰ to 28.6 ‰, which is similar to δ34S value of seawater sulphate (+ 8.0 ‰ to + 38.7 ‰) in the Sinian-Permian strata, suggesting that S in the lead-zinc deposits in the district mainly comes from the seawater sulfate in the ore-hosting strata, and the TSR effect is the main formation mechanism of the reduced sulfur. In some deposits, pyrolysis of sulfur-bearing organic matter may be another mechanism for the reduction of sulfur. The Pb isotopic composition of sulphides shows four different metallogenic source modes: (1) Pb in the Tangjia and other deposits is mainly derived from basement rocks; (2) Pb in the Jinsha, Lema and Lehong deposits is mainly derived from (3) Huize, Tianbaoshan, Maozhu, Yinchanggou, Da Liangzi, Yunhe, Maoping, Fuller, Cedar Forest, Bridge and other deposits Pb mainly comes from the mixing of multi-source fluids in basement rocks and sedimentary caprocks, and Emeishan basalts may provide a small amount of ore-forming materials. (4) Pb in Qingshan, Chi Pu, Yincunpo, Shau Kei Wan and Ban Banqiao mainly come from Sedimentary caprock, basement rock provides partial mineralization. The SPb isotopic composition of typical deposits indicates that ore-forming materials have mixed source characteristics.