Читать книгу The Rare Earths: Their Occurrence, Chemistry, and Technology - Stanley Isaac Levy - Страница 136
Titanium Olivine.
Оглавление(H₂,Fe´´,Mg)₂(Si,Ti)O₄; Mn and F in traces. TiO₂ = 3-12%.
Orthorhombic.
G = 3·25-3·27. H = 61⁄2-7. Deep red to yellow; pleochroic.
Pfunders, Tyrol; Zermatt, Switzerland.
