What is hematite made of?

1 Answer
Dec 18, 2015

Iron oxide (#Fe_2O_3#)


Hematite (or haematite) is an iron oxide mineral. It is made up of a repeating lattice of iron and oxygen ions. This mineral has the chemical formula #Fe_2O_3#, which is the same as that of ordinary rust. Therefore fresh samples of hematite have a rusty red appearance.