2012•Multipurpose Utilization of Mineral ResourcesRequires access
Research on Mineralogical Characteristics of Nangou Gold Ore and Leachability of Gold
WU Han-quan
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Abstract
The research of technological mineralogy of the gold ore in Nangou Songxian and the achievements of leachability were introduced.By chemical analysis and electron microprobe analysis,the chemical composition,mineral composition,and mineral content,occurrence of gold and disseminated particle-size characteristics were found out.It belongs to tuffaceous sandstone,siltstone type gold ore.Most of the gold occurs in limonite and then in arsenopyrite and pyrite.The gold in ore mainly exists in the form of natural and visible gold,mainly disseminating in the form of fracture gold and being carried by oxide minerals,which makes it treated by cyanidation.When the gold grade of the raw ore is 2.39～4.14g/t,the average gold grade of 0.31～0.26g/t in the tailings can be obtained.The good index of 87.03～93.72% is obtained.