AM_Fe2SiO4 Formula: (Fe2.001 Si.999) O4 Name: Fe2SiO4 Unit cell: 8.234 8.234 8.234 90.0 90.0 90.0 , V=558.26 Space group: FD3M (227)

Yagi T , Marumo F , Akimoto S I , American Mineralogist , 59 (1974) p.486-490, Crystal structures of spinel polymorphs of Fe2SiO4 and Ni2SiO4