Читать книгу The Rare Earths: Their Occurrence, Chemistry, and Technology - Stanley Isaac Levy - Страница 13

Titanium dioxide. TiO₂ = 97-100%.

Tetragonal; habit octahedral.

G = 3·82-3·95. H = 5¹⁄₂-6. Transparent to opaque; brown to black.

Dauphiné; Bavaria; Cornwall; Norway; Brazil, etc.