AM_Spinel_408 Formula: Al1.839 Fe.216 Mg.776 Si.002 Zn.007 Cr.078 Ni.014 O4 Name: Spinel Unit cell: 8.111 8.111 8.111 90.0 90.0 90.0 , V=533.61 Space group: FD3M (227)

Menegazzo G , Carbonin S , Physics and Chemistry of Minerals , 25 (1998) p.541-547, Oxidation mechanisms in Al-Mg-Fe spinels., A second stage: alpha-Fe2O3 exsolution, Sample: TS11B7, temperature lowered from T = 1150 C to 280 C in 117 hours