AM_Armalcolite_1 Formula: Mg.5 Ti2 Fe.044 O5 Name: Armalcolite Unit cell: 9.745 10.0625 3.7422 90.0 90.0 90.0 , V=366.96 Space group: BBMM (63)

Wechsler B A , American Mineralogist , 62 (1977) p.913-920, Cation distribution and high-temperature crystal chemistry of armalcolite, sample Arm-E, T = 24 deg C, after annealing