Ilvaite Bonazzi P, Bindi L American Mineralogist 84 (1999) 1604-1612 Structural adjustments induced by heat treatment in ilvaite Sample: RM at T = 550 deg C _database_code_amcsd 0002321 13.013 8.802 5.849 90 90 90 Pnam atom x y z occ Uiso Ca .81328 .37080 .75 .00891 Fe1 .88981 .05150 .00594 .93 .00758 Mg1 .88981 .05150 .00594 .03 .00758 Al1 .88981 .05150 .00594 .04 .00758 Fe2 .93991 .73990 .25 .95 .00791 Mn2 .93991 .73990 .25 .05 .00791 Si1 .96007 .36831 .25 .00600 Si2 .67993 .22798 .25 .00632 H .7438 .0535 .75 .196 O1 .01067 .02862 .75 .01195 O2 .93683 .27212 .01684 .00854 O3 .77793 .10975 .25 .00858 O4 .67116 .33030 .01831 .00839 O5 .58548 .10167 .25 .00779 O6 .60102 .02553 .75 .01138 O7 .79899 .10990 .75 .00954