Tags: Chemical Substance, Mineral.
Cobaltite is a sulfide mineral composed of cobalt arsenic and sulfur CoAsS. It contains up to 10 percent iron and variable amounts of nickel. Structurally it resembles pyrite (FeS2) with one of the sulfur atoms replaced by an arsenic atom.Although rare it is mined as a significant source of the strategically important metal cobalt. Secondary weathering incrustations of erythrite hydrated cobalt arsenate are common.
