Читать книгу The Rare Earths: Their Occurrence, Chemistry, and Technology - Stanley Isaac Levy - Страница 27
Blomstrandine.
Оглавление Dimorphous with Polycrase (q.v.), and of same composition.
Orthorhombic; isomorphous with priorite (q.v.).
G = 4·5-5·0; H = 61⁄2. Bright black; translucent.
Hitterö and Arendal, Norway.
