Chalcogen, H-Mg-O-Si, Hexagonal, Mg-x polyhedra

• Al-Fe-H-Mg-O-Si
• Al-H-Mg-O-Si-Ti
• Al-Ca-H-K-Mg-O-Si
• H-K-Mg-O-Si
• thermal and thermodynamic properties
• structural properties
• electronic and electrical properties
• thermal expansion
• mechanical properties
• chalcogen
• metalloid
• alkaline
• disordered