In the Eburnean (West Africa) and Trans Amazonian (South America) orogenies, orogenic gold deposits were formed in greenstone belts that are in Mali, Guinea, Ivory Coast, Ghana, and Burkina Faso in west Africa and Venezuela, Guyana, Suriname, French Guiana, and Brazil in South America. Gold has been mined in West Africa since antiquity and modern, large scale mining started in the late 1800’s in Ghana. It is estimated that there are about 300 million ounces of gold that have been discovered and mined in West Africa. In South America, gold mining at small scales has been going on for about 200 years and the onset of large scale mining is very recent, for example, the first mine in Suriname at Rosebel only started production in 2000. It is estimated that there are about 100 million ounces of gold production plus reserves in the Guiana Shield of South America, even though the total area of greenstone belts is about the same as West Africa. Accordingly, there are probably at least another 100 million ounces of gold to be discovered in the Guiana Shield of South America.