Iron pyrite

A sample of iron pyrite with large crystals.

Iron pyrite is an iron sulfide with the chemical formula FeS₂. Iron pyrite is the most common sulfide material worldwide and therefore is quite notable for its role in providing a source of sulfur in non-volcanic regions.

Uses

Iron pyrite is most notable for its sulfur content, which makes it a vital mineral for anyone seeking to rebuild chemical industry in a region without access to volcanic sulfur.

Iron pyrite can be used to form sparks and create fire.

Iron pyrite is a base material for the production of sulfur dioxide for use in paper production and manufacture of sulfuric acid.