H-O, H-x polyhedra, Hydrate, Phase transitions

• H-O-Se-U
• Al-Ca-H-O-Si
• Al-Ca-H-Na-O-Si
• H-Na-O-S
• fusion
• temperature for congruent melting
• structural transitions
• pressure for structural transition
• decomposition temperature
• hydrate
• chalcogen
• non-disordered
• disordered
• monoclinic
• orthorhombic
• triclinic
• cubic
• trigonal