Chalcogen, Transitional, Fusion, Monoclinic, Si

• Al-Fe-H-Mg-O-Si
• Fe-O-Si
• O-Si-Y
• Al-Ca-Fe-H-K-Mg-Na-O-Si-Ti
• Fe-Li-O-Si
• temperature for congruent melting
• transitional
• chalcogen
• metalloid
• disordered