The same gold-rich Birimian Greenstone Belts that are responsible for the gold-producing regions in Mali, Ivory Coast, Burkina Faso and Ghana, cut across much of the Republic of Guinea’s northeastern terrain. As a result, over the last decade, the Siguiri Basin has led to the discovery of two +5M oz and three +1M oz gold deposits. However, even though the country is ripe with new gold mining opportunities and has the ability to match the potential of the rest of the continent, due to an under-investment problem, Guinea's gold mining industry is far less developed than that of its West African neighbors.
Source: Gold Output, Wikipedia, 2012
Gold mining in Guinea dates back to the Asante Kotoko Kingdom (mid 15th century), which was well-known for producing most of the high-quality gold exchanged along the Trans-Saharan trade route. Geologists believe that the Bure Goldfields from this prehistoric empire currently stretches across northeast Guinea and southwest Mali. Consequently today, alluvial deposits can be found alongside many of the rivers and streams that drain rocks from the Birimian sedimentary series. These rock are known to flank two parallel belts (~50 km apart) across a northeastern path from Guinea into Mali.