Ilvaite Bonazzi P, Bindi L American Mineralogist 84 (1999) 1604-1612 Structural adjustments induced by heat treatment in ilvaite Sample: RM at T = 615 deg C _database_code_amcsd 0002323 13.012 8.801 5.850 90 90 90 Pnam atom x y z occ Uiso Ca .81437 .37215 .75 .00880 Fe1 .88933 .05276 .00182 .93 .00750 Mg1 .88933 .05276 .00182 .03 .00750 Al1 .88933 .05276 .00182 .04 .00750 Fe2 .93779 .73957 .25 .95 .00779 Mn2 .93779 .73957 .25 .05 .00779 Si1 .96151 .36769 .25 .00573 Si2 .68148 .22939 .25 .00576 H .7629 .0549 .75 .115 O1 .01277 .02720 .75 .01215 O2 .93804 .27138 .01656 .00855 O3 .77963 .11118 .25 .00752 O4 .67208 .33193 .01836 .00826 O5 .58682 .10303 .25 .00818 O6 .59924 .02467 .75 .01283 O7 .80151 .11156 .75 .01056