Former Barrick Gold chief the new owner of Iamgold’s Niobec mine in Quebec

[caption id="attachment_814875" align="aligncenter" width="600"] The Niobec mine is North America's only source of pyrochlore, the primary niobium ore and one of only three major producers of niobium in the world. (Courtesy of IAMGOLD Corp.)[/caption] Former Barrick Gold’s chief executive Aaron...