Читать книгу The Rare Earths: Their Occurrence, Chemistry, and Technology - Stanley Isaac Levy - Страница 155

ZrSiO₄, with Fe, Th, etc., in traces. ZrO₂ = 61·0-70·0%.

Tetragonal; habit prismatic.

G = 4·68-4·70. varying considerably. H = 7¹⁄₂. Colour very variable.

Widely distributed as a rock mineral, in sands, etc.