Ca-Mg, Chalcogen, Fusion

• Ca-Mg-O-Si
• Al-Ca-Mg-O-Si
• Al-Ca-Fe-Mg-O-Si
• Ca-Mg-Na-O-P
• Al-Ca-H-K-Mg-Na-O-Si
• temperature for congruent melting
• chalcogen
• alkaline
• disordered
• transitional
• monoclinic
• orthorhombic
• trigonal
• cubic
• triclinic