Hexagonal, Metalloid, O-Si, Phase transitions

• Al-H-Na-O-Si
• La-O-Si
• Al-C-H-Na-O-Si
• Al-Li-O-Si
• fusion
• temperature for congruent melting
• structural transitions
• temperature for structural transition
• pressure for structural transition
• chalcogen
• metalloid
• disordered
• orthosilicate