Mining in the Republic of the Congo - Wikipedia
Two iron ore mining permits, one to Core Mining's Avima deposit and the other to Nebaba, held by Sundance. Geology. Precambrian rocks of the Archean to Neoproterozoic Age form the central part of the Republic of the Congo, overlain by continental Cretaceous and Tertiary Sediments. The East is made up of Quaternary alluvial sedimentation.