Читать книгу The Rare Earths: Their Occurrence, Chemistry, and Technology - Stanley Isaac Levy - Страница 43

A variety of Aenigmatite (q.v.) of very complex composition, TiO₂ = 6-8%.

Anorthic.

G = 3·74. H = 5. Black; opaque.

Island of Pantellaria (formerly Cossyra).