Fe-Mg-O, Isothermal bulk modulus, Mg-x polyhedra

• Al-Fe-H-Mg-O-Si
• Fe-H-Mg-O-Si
• Al-Ca-Cr-Fe-Mg-Mn-Na-O-Si-Ti
• Al-Ca-Fe-H-K-Mg-Na-O-Si-Ti
• transitional
• chalcogen
• alkaline
• disordered
• monoclinic
• orthorhombic
• cubic
• trigonal
• triclinic