Orthorhombic.
G = 4·0-4·8. H = 6. Black; vitreous lustre.
Norway.
Priorite.
Dimorphous with [Euxenite] (q.v.).
Orthorhombic; isomorphous with Blomstrandine.
G = 4·6-5·0. H = 6. Black; transparent in flakes.
Swaziland, S. Africa.
Pseudobrookite.
Fe₄(TiO₄)₃, ferric orthotitanate. TiO₂ = 44-53%.