Apatite, Chalcogen, Rare earth, Hexagonal, Phase transitions

• La-O-Si-Sr
• Ca-La-Mn-O-Si
• Ga-La-O-Si
• Ca-La-O-Si
• Co-La-O-Si
• fusion
• temperature for congruent melting
• structural transitions
• temperature for structural transition
• pressure for structural transition
• rare earth
• apatite
• chalcogen
• disordered