Читать книгу The Rare Earths: Their Occurrence, Chemistry, and Technology - Stanley Isaac Levy - Страница 47

FeO,Sb₂O₅ + 5FeO,TiO₂? TiO₂ = 35% about.

Orthorhombic; habit prismatic.

G = 4·53. H = 5. Pitch black; opaque; lustre resinous.

Tripuhy, Minas Geraes, Brazil.