OverviewUsesFormal oxidation states for pyrite, marcasite, and arsenopyriteCrystallographyCrystal habitVarietiesDistinguishing similar mineralsHazards
The mineral pyrite , or iron pyrite, also known as fool's gold, is an iron sulfide with the chemical formula FeS2 ironII disulfide. Pyrite is considered themon of the sulfide minerals.
Pyrite's metallic luster and pale brass yellow hue give it a superficial resemblance to gold, hence the well known nickname of fool's gold. The color has also led to the nicknames brass, brazzle, and Brazil, primarily used to refer to pyrite found in coal.