Читать книгу The Rare Earths: Their Occurrence, Chemistry, and Technology - Stanley Isaac Levy - Страница 30

A basic phosphosilicate of cerium metals, with Fe, Ca, Mg, Na, F. Cer = 60·5-60·9%.

Hexagonal; habit prismatic.

G = 4·446. H = 5¹⁄₂. Brown; transparent.

Naujakasik, Greenland.