AM_Filipstadite Formula: (Mn1.25 Mg.75) (Fe.5 Sb.5) O4 Name: Filipstadite Unit cell: 8.64 8.64 8.64 90.0 90.0 90.0 , V=644.97 Space group: FD3M (227)

Dunn P J , Peacor D R , Criddle A J , Stanley C J , American Mineralogist , 73 (1988) p.413-419, Filipstadite, a new Mn-Fe3+-Sb derivative of spinel, from Lanban, Sweden, Locality: Langban, Varmland, Sweden, Note: cubic subcell, O arbitrarily placed in ideal eutactic position