Читать книгу The Rare Earths: Their Occurrence, Chemistry, and Technology - Stanley Isaac Levy - Страница 88

An altered Zircon (q.v.), with E, Ca, Fe, H₂O, etc. ZrO₂ = 47-67%.

Tetragonal; pseudomorphous.

G = 3·9-4·1. H = 6. Brown, often dull white internally.

Hitterö, Norway; Haute Loire, France; and in U.S.A.