The Montagne d'Or mine (French for 'Mountain of Gold') is one of the largest gold mine projects in French Guiana, an overseas region of France. The mine is located in the north-west of the country in the Arrondissement of Saint-Laurent-du-Maroni. The mine has estimated reserves of 5,370,000 troy ounces (167,000 kg) of gold.The mine is a continuation of the Paul Isnard mine discovered in 1875. It is considered very controversial, because it is located between the two parts of the Lucifer Dékou-Dékou Biological Reserve, and is sometimes less than 500 metres from the perimeter of the wilderness area. Source: Wikipedia (en)