AM_Staurolite_31 Formula: O12 Si1.87 Al4.51 Fe.839 Mg.204 Li.025 Zn.02 H.75 Name: Staurolite Unit cell: 7.8669 16.6216 5.6569 90.0 90.03 90.0 , V=739.70 Space group: C12/M1 (12)

Hawthorne F C , Ungaretti L , Oberti R , Caucia F , Callegari A , The Canadian Mineralogist , 31 (1993) p.551-582, The crystal chemistry of staurolite. I. Crystal structure and site populations, Sample Code: PIO/11, Locality: Brazil