Читать книгу The Rare Earths: Their Occurrence, Chemistry, and Technology - Stanley Isaac Levy - Страница 153

UO₃, 3ThO₂, 3SiO₂, 6H₂O? E₂O₃ = 6·7; ThO₂ = 41·4%.

Tetragonal; angles near Zircon. Usually massive.

G = 4·43-4·54. H = 4-4¹⁄₂. Yellowish brown.

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