Читать книгу The Rare Earths: Their Occurrence, Chemistry, and Technology - Stanley Isaac Levy - Страница 101

A variety of Zircon (q.v.), poor in SiO₂. ZrO₂ = 69%.

Tetragonal; angles exactly those of Zircon.

G = 3·629. H = 5¹⁄₂. Reddish-brown; adamantine lustre.

Arendal, Norway.