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浑江金矿是近年来在我国东北地区发现的重要微细浸染型金矿床。矿化严格受控于大横路断裂下盘富含有机质的碳酸盐岩地层。包裹体研究和热力学计算表明，成矿温度为１８２～２３０℃，压力为５．６６×１０７～６．１６×１０７Ｐａ，形成深度小于２．５ｋｍ。成矿流体具有中—弱碱性、强还原性等地下热卤水特征。元素地球化学研究证实含矿碳酸盐建造为金矿床的形成提供了物质基础。矿源层中的金以［Ａｕ（ＨＳ）２］－形式活化进入溶液，促使金沉淀富集的机制是溶液中还原硫活度降低、氧逸度下降和有机质的还原吸附作用等
Hunjiang gold mine is an important fine disseminated gold deposit discovered in northeast China in recent years. The mineralization is strictly controlled by the organic matter-bearing carbonate rock formations under the Great Heng Road fault. Inclusion studies and thermodynamic calculations show that the metallogenic temperature is between 182 and 230 ℃ and the pressure is between 5.66 × 107 and 6.16 × 107 Pa. The depth of formation is less than 2.5 km. The ore-forming fluids are characterized by medium-weak alkalinity, strong reducibility and other underground brine. Elemental geochemical studies confirm that ore-bearing carbonate formation provides the material basis for the formation of gold deposits. The gold in the source layer is activated into the solution by [Au (HS) 2] -, and the mechanism of enrichment of the gold precipitate is the reduction of the reduced sulfur activity, the reduction of oxygen fugacity and the reduction and adsorption of organic matter in the solution