Читать книгу The Rare Earths: Their Occurrence, Chemistry, and Technology - Stanley Isaac Levy - Страница 129
Tengerite.
ОглавлениеHydrated carbonate of E, Be, Ca, etc.; a weathered Gadolinite (q.v.). E₂O₃ = 39·2-47·8%.
Amorphous.
White; opaque; very soft.
Llano Co., Texas.