AM_Spinel_283 Formula: Mg1.255 Al1.688 Cr.057 O4 Name: Spinel Unit cell: 8.0908 8.0908 8.0908 90.0 90.0 90.0 , V=529.63 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: Ch1, annealed at T = 850 C, ordering, t = 0.50 m