Disordered, O-Si, Phase transitions, Trigonal

• F-Fe-H-O-Si
• F-H-Mg-O-Si
• B-La-O-Si
• Ca-Ga-Nb-O-Si
• Al-N-Nd-O-Si
• temperature for congruent melting
• fusion
• structural transitions
• pressure derivative of transition temperature
• pressure for structural transition
• metalloid
• disordered
• chalcogen
• silicate