Geology of Rwanda

The geology of Rwanda comprises Mesoproterozoic metasediments largely quartzites and sandstones and shales of the Burundian Supergroup which are locally intruded by granite. In eastern Rwanda are the “older granites” along with granitic-gneisses and migmatites of Palaeoproterozoic age. In the northwest and southwest are Neogene volcanics. Alluvium and lake sediments of Quaternary age occur in parts of the Western Rift and along rivers and lakes.

Economic geology

Rwanda is the foremost producer of tungsten in Africa and a key producer of tin and coltan, an ore providing both niobium and tantalum. ^[1]

References