Alkali, Chalcogen, Temperature for congruent melting

• Al-H-Na-O-Si
• H-Na-O-P
• Al-Na-O-Si
• H-K-O-P
• B-H-Na-O
• chalcogen
• alkali
• transitional
• non-disordered
• monoclinic
• orthorhombic
• cubic
• trigonal
• tetragonal