Most ores consist of the mineral chromite, the ideal formula of which is FeCr2O4.
Oolitic iron ore (i.e., ores consisting of small round grains cemented together) is found at Sierra Grande in Argentina and Paz del Río in the Cordillera Oriental of Colombia.
It should be noted that many copper ore deposits used in the ancient Iran were weathered copper sulphide ores, consisting of copper sulphide and oxide compounds [4].
Iron ore sintering consists of heating a layer of fines until partial melting occurs and individual ore particles fuse together.
The largest group of ore minerals consists of sulfides.
The southeast wall of the ore body consists of deformed, clay-altered, fine-grained sedimentary rock that may be Cenozoic in age.
The Selebi-Phikwe ore body consists of four co-occurring sulphide minerals pentlandite, chalcopyrite, pyrite and pyrrhotite along with other minerals, while the major gangues are amphibolites, quartz, mica and feldspar, forming typically about 68%% (Table 1).
Gold ore processing consists of a limited number of core activities [e.g., breaking rock, grinding, washing, drying, amalgamation (using mercury), and melting].
The major ore mineral assemblage consists of pyrrhotite and arsenopyrite loellingite.
The run-of-mine ore at Sadiola consists of soft clays with a varying percentage of grit, producing a high viscosity slurry.
