Deposits that host the world’s base metals

The earth has many unique ways of stripping base metals from its crust and concentrating them into deposits. Over the course of civilization, humans have uncovered seven main types: sediment-hosted copper-cobalt; magmatic nickel-copper-platinum group metal; volcanogenic massive sulphide; porphyry; mississippi valley type; sediment exhalative; and laterites. Continue reading at The Northern Miner.