Electronic energy gap, Sulfate, Trigonal

• Fe-H-O-S
• Al-Ca-Fe-H-Mg-O-S
• Al-H-N-O-S
• Al-K-O-S
• Cd-O-S
• values of electronic energy gap
• energy gap for direct transition
• energy gap for indirect transition
• sulfate
• chalcogen
• non-disordered
• transitional