AM_Spinel_409 Formula: Al1.808 Fe.225 Mg.825 Si.001 Zn.002 Cr.127 Ni.008 Ti.004 O4 Name: Spinel Unit cell: 8.1259 8.1259 8.1259 90.0 90.0 90.0 , V=536.56 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: LE20A1, unheated