Читать книгу The Rare Earths: Their Occurrence, Chemistry, and Technology - Stanley Isaac Levy - Страница 72

FeTiO₃; composition varies widely. TiO₂ = 3·5-52·3%.

Rhombohedral.

G = 4·5-5. H = 5-6. Black; opaque. Slightly magnetic.

Norway; Dauphiné; Bohemia; Cornwall, etc.