AM_Spinel_304 Formula: Mg1.142 Al1.614 Cr.244 O4 Name: Spinel Unit cell: 8.1177 8.1177 8.1177 90.0 90.0 90.0 , V=534.93 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: Sc, annealed at T = 650 C, ordering, t = 480 m