原生有机质及沥青的有机地球化学研究结果表明矿区存在微弱的热异常，地层中原生有机质含量极低，沥青是成矿过程中由含矿热液从他地带来的迁移型流体烃。流体烃在迁移时发生轻烃组分的分馏。在成矿部位，含有硫酸盐、铅锌和流体烃的深源热液（温度６０一］００℃）与携带硫酸盐还原细菌的大气降水汇合，流体烃发生生物降解和水洗溶解并引起硫酸盐的生物还原，生成硫化氢，导致铅锌硫化物沉淀，形成矿床。 Organic geochemical studies of native organic matter and bitumen show weak thermal anomalies in the mining area. The content of primary organic matter in the formation is very low. Asphalt is a migrating fluid hydrocarbon from the ore-bearing hydrothermal fluid in the ore-forming process. Fractionation of light hydrocarbon components occurs as the fluid hydrocarbons migrate. At the metallogenic site, a deep-source hydrothermal fluid (temperature 60 ° C) containing sulphate, lead-zinc and fluid hydrocarbons, combined with atmospheric precipitation carrying sulphate-reducing bacteria, biodegrades and washes dissolve the fluid hydrocarbons and causes sulphate Biological reduction, generating hydrogen sulfide, lead to lead and zinc sulfide precipitation, the formation of deposits.