Abstract: A certain copper ore in Zambia is a kind of oxidized ore with high proportion of combined phases，in which the grade of copper is 2.10%，and grade of other associated valuable elements such as Fe，Au，Ag，and Co are 24.20%，0.20 g/t，7.60 g/t，and 0.05% respectively.In order to determine the proper beneficiation process，study on process mineralogy of this copper ore was made.The results show that ①the mineral composition is complex and the main useful minerals include hematite-limonite，magnetite，chalcosiderite，green chalcosiderite，pseudo-malachite and so on.②the mineral structures mainly include vesicular，crumby，disseminated granular，riband-striped，circle-like，metacolloform，miarolitic，and veinlet structures，the mineral textures mainly include xenomorphic granular，cryptocrystalline，sarciniform，pectination，columnar and metasomatic.③copper in chalcosiderite，green chalcosiderite and pseudo-malachite account for 41.03%，40.27%，and 15.35% of the total copper respectively.Chalcosiderite and green chalcosiderite are all cryptocrystalline aggregation with particle size of 0.01～0.5 mm.The particle size of pseudo-malachite is generally within the range from 0.01 to 0.4 mm，and few reach up to 0.8 mm.The particle size of hematite-limonite is generally within the range from 0.01 to 0.5 mm，and few reach up to 4 mm.The particle size of magnetite is larger，which is generally within the range from 0.1 to 0.2 mm.Therefore，this kind of copper ore belongs to refractory multi-metal oxidized ore.

Key words: Copper ore, Chalcosiderite, Green chalcosiderite, Pseudo-malachite, Hematite-limonite, Magnetite, Process mineralogy