Читать книгу The Rare Earths: Their Occurrence, Chemistry, and Technology - Stanley Isaac Levy - Страница 65
Hainite.
ОглавлениеTantalo-silicate and titanate of Zr, Ca, Na. ZrO₂ = 29-32%.
Anorthic.
G = 3·2. H = 5. Colourless to yellow; transparent.
Bohemia.
