Читать книгу The Rare Earths: Their Occurrence, Chemistry, and Technology - Stanley Isaac Levy - Страница 130
Thalenite.
ОглавлениеH₂E₄Si₄O₁₅, with traces of Fe´´´ and Al. Yttr = 58·6-63·9%.
Monoclinic.
G = 4·23. H = 61⁄2. Bright red and yellow,
Österby, Sweden.
