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四川石棉田湾金矿床中含有原生型干酪根和迁移型有机流体，在成矿期间由于含矿热液的改造，原生有机质发生热降解，生成小分子有机化合物，构成容易迁移的有机流体。同时，地表下渗的大气降水携带了细菌类微生物，对原生有机质进行生物降解，并生成硫化氢类还原物质。当含矿热液与有机流体及硫化氢混合时，促使矿液中金络合物被破坏，导致自然金的沉淀富集
The Tianwan gold deposit in Shimian, Sichuan Province contains primary kerogen and migrating organic fluids. During the mineralization, due to the alteration of ore-bearing hydrothermal fluids, the primary organic matter undergoes thermal degradation and generates small organic compounds, forming easily migrated organic fluids. At the same time, surface subsidence of the atmospheric precipitation carries bacterial microbes, biodegrades primary organic matter and generates hydrogen sulfide-like reducing substances. When the ore-bearing hydrothermal fluids are mixed with organic fluids and hydrogen sulphide, gold complexes in the ore fluids are destroyed, resulting in the precipitation of natural gold