AngloGold Ashanti, the world’s No. 3 gold producer, plans to invest $400-million in Colombia in the 2013-2015 period at its La Colosa deposit and other gold exploration projects, a company executive said on Friday. Some $300-million is earmarked for exploration work at La Colosa, Colombia’s largest gold deposit, located in the southern Tolima province. The remaining $100-million would be invested in exploration projects in the regions of Antioquia, Cauca, Bolivar and Caldas, AngloGold’s CEO in Colombia, Rafael Herz, said during a mining conference in the port city of Cartagena.