AM_Majorite_4 Formula: Mg3.64 Al.72 Si3.64 O12 Name: Majorite Unit cell: 11.4891 11.4891 11.4891 90.0 90.0 90.0 , V=1516.55 Space group: I41/ACD (142)

Nakatsuka A , Yoshiasa A , Yamanaka T , Ohtaka O , Katsura T , Ito E , American Mineralogist , 84 (1999) p.1135-1143, Symmetry change of majorite solid-solution in the system Mg3Al2Si3O12-MgSiO3, Sample: x = .64