More than a decade ago, Canadian miners prospecting for diamonds in western Greenland saw on the horizon a huge white hump. They called it White Mountain and soon discovered it was a deposit of anorthosite, a salt-and-pepper color mineral used…

More than a decade ago, Canadian miners prospecting for diamonds in western Greenland saw on the horizon a huge white hump. They called it White Mountain and soon discovered it was a deposit of anorthosite, a salt-and-pepper color mineral used…