Ilmenite: Mineral information, data and localities.
Cr-rich Picroilmenite: A cromium- and magnesium-rich variety of ilmenite, containing up to 8.6% Cr2O3 and up to 17.0% MgO. Ferrian Ilmenite: Ilmenite containing up to 33% Fe2O3 in solid-solution in the rhombohedral series Fe2O3-FeTiO3.