AM_Ringwoodite_3 Formula: Si (Mg.766 Fe1.234) O4 Name: Ringwoodite Unit cell: 8.1763 8.1763 8.1763 90.0 90.0 90.0 , V=546.60 Space group: FD3M (227)

Hazen R M , Downs R T , Finger L W , American Mineralogist , 78 (1993) p.1320-1323, Crystal chemistry of ferromagnesian silicate spinels: Evidence for Mg-Si, disorder, Sample: SUNY 1013