Geology of Benin

In northwestern Benin, gold is mineralized in conglomerates of quartzite of the Togo Group. In addition to artisanal gold mining, geological materials for industry and construction are mined. In Goumpere, nickel, copper, chromium, and cobalt have been detected by the observance of geochemical anomalies. Additionally, 123 million tons of limestone have been observed in the Oueme district which could be used for cement and lime. There is also 33 million tons of sandstone available that could be used for ballast. Uranium and iron ore have been discovered in the region as well.^[1]: 42

Benin has been extracting crude oil since the 1990s, the majority of which comes from the Seme Field. More onshore exploration continues. There is an estimated 1.09 Mt of crude petroleum and 1.1 billion m³ of natural gas.^{[1]: 42  [3]}