和矿石中的主要化学相态为硅酸盐态; 金的游离自然金、碳酸盐态为金的成矿有利相态，银的氯化银

态、自然银态对成矿具有指示意义; 岩石中金的化学相态特征可指导地球化学找矿，为岩石地球化学

的异常评价提供依据。

that the content of Au and Ag in the surrounding rocks of each vein had little difference． IV vein had the highest content of Au in the ores，ollowed by III vein，II vein and V vein． And Ⅱ vein had the highest content of Ag in the ores，followed by Ⅳ vein，Ⅲ vein and V vein． Silicate state and free natural state were the main chemical

phases of Au in the surrounding rocks and ores，respectively． And silicate state was the main chemical phase of Ag in both surrounding rocks and ores． The free natural state and carbonate state of Au were favorable phases for gold

mineralization． AgCl state and free natural state of Ag had indicative significance for mineralization． The chemical phase distribution characteristics of Au in rocks can guide geochemical prospecting and provide basis for abnormal evaluation of rock geochemistry．