Abstract:
In this paper,the graphite furnace atomic absorption section spectroscope was used to determine the chemical phases content of Au and Ag of the four typical veins in the Jinchangyu gold deposit. And the distribution characteristics and correlation of the chemical phase states of Au and Ag were analyzed. The results showed
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. |