Electronic energy gap, Fe-Si, Metalloid, Monoclinic

• Fe-O-Si
• Al-Fe-H-Mg-O-Si
• Al-Fe-H-K-Mg-O-Si
• Al-Ca-Fe-H-Mg-Mn-O-Si-Zn
• Al-Ca-Fe-H-K-Mg-Na-O-Si-Ti
• values of electronic energy gap
• thermal energy gap
• transitional
• metalloid
• chalcogen
• disordered