AM_Majorite_1 Formula: Si4.68 Mg3.68 Al.36 Cr.28 O12 Name: Majorite Unit cell: 11.512 11.512 11.515 90.0 90.0 90.0 , V=1526.04 Space group: I141/A1 (1)

Nakatsuka A , Yoshiasa A , Yamanaka T , Ito E , American Mineralogist , 84 (1999) p.199-202, Structure refinement of birefringent Cr-bearing majorite, Mg3(Mg.34Si.34Al.18Cr.14)2Si3O12