AM_Spinel_269 Formula: Mg1.159 Al1.811 Cr.03 O4 Name: Spinel Unit cell: 8.0887 8.0887 8.0887 90.0 90.0 90.0 , V=529.22 Space group: FD3M (227)

Princivalle F , Martignago F , Dal Negro A , American Mineralogist , 91 (2006) p.313-318, Kinetics of cation ordering in natural Mg(Al,Cr3+)2O4 spinels, Locality: Olkhon metamorphic complex, Lake Baikal, Russia, Sample: Ch, annealed at T = 650 C, disordering, t = 15840 m