Greenfield Exploration

The Diakha-Siribaya project is wholly owned by IAMGOLD and consists of 8 contiguous exploration permits which cover a total area of 596.5 square kilometres, located in the Kédougou-Kéniéba inlier of the West African Craton region of western Mali along the borders with Senegal and Guinea. Effective December 31, 2018, total mineral resources, on a 100% basis, comprised indicated resources of 18.0 million tonnes grading 1.3 g/t Au for 744,000 ounces, and inferred resources of 23.2 million tonnes grading 1.6 g/t Au for 1.2 million ounces (see news release dated January 30, 2019)

Gold mineralization is hosted within highly prospective, Birimian-aged metasedimentary, volcanic and intrusive rocks proximal to the Senegal-Mali Shear Zone. At Diakha, the largest deposit discovered to date on the property, gold mineralization occurs within an albitized and locally brecciated sandstone unit similar to that hosting mineralization at IAMGOLD's Boto gold Project located in Senegal approximately 10 kilometres to the north along strike. A recently completed feasibility study on the Boto Gold Project has demonstrated an attractive future development project (see news release dated October 22, 2018).