Читать книгу The Rare Earths: Their Occurrence, Chemistry, and Technology - Stanley Isaac Levy - Страница 49

Na₂Zr(Si₂O₅)₃, 1¹⁄₂H₂O. ZrO₂ = 20·5%.

Orthorhombic.

G = 2·52-2·56. H = 7-8. Colourless to red; translucent.

Various localities in Greenland.