Alkaline, Transitional, Be-Fe

• Al-Be-Fe
• Be-Fe-O-S-Si
• Be-Ca-Er-Fe-O-Si-Y
• Be-Ca-Ce-Fe-O-Si-Y
• thermal and thermodynamic properties
• structural properties
• phase transitions
• phase diagram
• alkaline
• transitional
• disordered
• chalcogen
• hexagonal
• trigonal
• monoclinic
• cubic
• orthorhombic