Chalcogen, Disordered, Silicate, Fusion, Hexagonal, Si

• Al-H-Na-O-Si
• Al-Na-O-Si
• Al-C-H-Na-O-Si
• Al-Ca-H-O-Si
• Al-Ba-O-Si
• temperature for congruent melting
• silicate
• metalloid
• chalcogen
• disordered