Oxy-dravite

• Al-B-Fe-H-K-Mg-Na-O-Si-Ti
• Al-B-F-Fe-H-Mg-Na-O-Si-Ti
• thermal and thermodynamic properties
• structural properties
• electronic and electrical properties
• thermoelectric power
• linear thermal expansion coefficient
• alkaline
• chalcogen
• disordered
• alkali
• trigonal