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长坑矿床金、银矿石的铅同位素组成具有一定的差异，前者的２０６Ｐｂ／２０４Ｐｂ比值变化大，后者较富２０７Ｐｂ／２０８Ｐｂ。金矿石中的铅为普通铅与放射成因铅混合而成的异常铅，银矿石中的铅则可能为三阶段铅混合的产物，且二者均为壳源。方解石的８７Ｓｒ／８６Ｓｒ比值显示锶来自地壳。金、银矿石硫化物的δ３４Ｓ值分别以分散（平均值为负）和较为集中（平均值为正）为特征，并与铅同位素组成之间存在相关关系。结合金、银的矿化分带现象，提出了铅同位素特征与氧化势不同的流体相互混合的成矿模式
The lead isotopic compositions of the gold and silver ores in the Changkeng deposit are different from each other. The 206Pb / 204Pb ratio of the former varies greatly, while the latter is more abundant than 207Pb / 208Pb. Lead in gold ores is anomalous lead mixed with lead and lead, while lead in silver ores may be a product of three-stage lead ores, both of which are shell sources. The 87Sr / 86Sr ratios of calcite show strontium from the crust. The δ34S values of gold and silver ores are characterized by dispersion (average negative) and concentration (average positive), respectively, and correlate with lead isotopic composition. Combined with the mineralization zoning phenomenon of gold and silver, a metallogenic model in which fluids with different lead isotopes and oxidation potentials are mixed is proposed