Ilvaite Bonazzi P, Bindi L American Mineralogist 84 (1999) 1604-1612 Structural adjustments induced by heat treatment in ilvaite Sample: RM at T = 625 deg C _database_code_amcsd 0002324 13.007 8.805 5.844 90 90 90 Pnam atom x y z occ Uiso Ca .81461 .37226 .75 .00996 Fe1 .88925 .05298 .00143 .93 .00840 Mg1 .88925 .05298 .00143 .03 .00840 Al1 .88925 .05298 .00143 .04 .00840 Fe2 .93739 .73945 .25 .95 .00859 Mn2 .93739 .73945 .25 .05 .00859 Si1 .96180 .36767 .25 .00661 Si2 .68167 .22961 .25 .00658 O1 .01293 .02673 .75 .01315 O2 .93843 .27132 .01651 .00963 O3 .77989 .11128 .25 .00862 O4 .67217 .33186 .01774 .00924 O5 .58696 .10293 .25 .00962 O6 .59906 .02465 .75 .01432 O7 .80173 .11110 .75 .01189