Alkali, Chalcogen, Fusion, Orthorhombic

• Al-Na-O-Si
• Na-O-V
• Al-H-K-O-Si
• Al-H-Na-O-Si
• H-Na-O-P
• temperature for congruent melting
• values of fusion
• alkali
• chalcogen
• non-disordered
• transitional