Abstract: A gold ore with gold grade of 5.85 g/t was medium sulfide content and multi-metal gold ore，in which the silver，copper，lead，zinc and sulphur are worthy of comprehensive recovery. In order to provide the basis for the efficient separation of the ores，process mineralogy research were conducted. The results indicated that: ① The content of the medium-fine particles gold，coarse particles gold and microfine gold particles were 75.65%，19.40% and 4.95%，respectively. ② The content of fracture gold，inter⁃ granular gold and wrapped gold were 47.51%，31.22% and 21.27%，respectively，among which the con⁃ tent of gold wrapped in sulfide was 17.77%. ③ Most of gold minerals in the ores were natural gold. The sur⁃ face of large particle gold was clean and un-pollution，and only minute quantity gold was intergrowth with gangue minerals or galena. The gold minerals in the ores are easily to be recovered.

Key words: gold ores, minerals composition, process mineralogy, dissemination relationship, occur? rence state