These permits are situated in the Kenieba inlier, which are well-known for hosting world-class gold mines. The Kéniéba Inlier, a north-northwest trending granite-greenstone belt occurs along the Mali-Senegal border. The Kéniéba Inlier is comprised of Birimian volcano-sedimentary formations regionally metamorphosed to greenschist facies and intruded by large granitoid-gneiss complexes. In the Kéniéba region most of the gold deposits are contained within secondary structures and splay faults associated with the Senegal-Mali Fault Zone (SMFZ), often where southeast to northwest sutures cross-cut the dominant structural fabric. The gold deposits are hosted by penetrative shears and not by a single structural feature. This implies that the whole region has great potential for the discovery of additional gold deposits (Hyde, 2001).
The Loula (11.5 Moz gold resource), Sadiola (9.2Moz gold resource) and Yatela (3.5Moz gold resource) are all hosted by metasediments and volcanic rocks of the Kenieba Inlier and are within or on splays of the Senegal - Mali fault zone, the single most important structure for controlling gold mineralization in the Kenieba inlier. Also associated with this structure is Randgold’s new mine - Gounkoto - that has a resource of 5.76Moz at a gold grade of 5.28g/t.