Chalcogen, Transitional, Electronic energy gap, Fe-Si

• Fe-O-Si
• Al-Fe-H-Mg-O-Si
• Fe-Mg-O-Si
• Fe-Li-O-Si
• Fe-H-Mg-O-Si
• values of electronic energy gap
• thermal energy gap
• transitional
• chalcogen
• metalloid
• disordered
• monoclinic
• orthorhombic
• trigonal
• cubic
• triclinic