Читать книгу The Rare Earths: Their Occurrence, Chemistry, and Technology - Stanley Isaac Levy - Страница 110
Pseudobrookite.
ОглавлениеFe₄(TiO₄)₃, ferric orthotitanate. TiO₂ = 44-53%.
Orthorhombic.
G = 4·39-4·98. H = 6. Dark brown to black.
Norway; France.