iron oxides known as
IRON(II) OXIDE Iron(II) oxide, also known as ferrous oxide, is one of the iron oxides. It is a black-colored powder with the chemical formula FeO. It consists of the chemical element iron in the oxidation state of 2 bonded to oxygen. Its mineral form is known as wuestite. wÃ¼stitet is of one of the three main oxides of iron, the other two being iron(II) oxide (FeO), which is rare, and iron(II,III) oxide (Fe 3 O 4), which also occurs naturally as the mineral magnetite. As the mineral known as hematite, Fe 2 O 3 is the main source of the iron for the steel industry.