Ringwoodite Hazen R M, Downs R T, Finger L W American Mineralogist 78 (1993) 1320-1323 Crystal chemistry of ferromagnesian silicate spinels: Evidence for Mg-Si disorder Sample: SUNY 1013 _database_code_amcsd 0001625 8.1763 8.1763 8.1763 90 90 90 *Fd3m .125 .125 .125 atom x y z occ B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3) Si .125 .125 .125 .00144 .00144 .00144 0 0 0 Mg .5 .5 .5 .383 .00192 .00192 .00192 .00004 .00004 .00004 Fe .5 .5 .5 .617 .00192 .00192 .00192 .00004 .00004 .00004 O .2420 .2420 .2420 .00212 .00212 .00212 .00001 .00001 .00001