Ilvaite Bonazzi P, Bindi L American Mineralogist 84 (1999) 1604-1612 Structural adjustments induced by heat treatment in ilvaite Sample: RM at T = 675 deg C _database_code_amcsd 0002326 13.013 8.804 5.841 90 90 90 Pnam atom x y z occ Uiso Ca .81593 .37354 .75 .01083 Fe1 .88868 .05457 -.00250 .93 .00878 Mg1 .88868 .05457 -.00250 .03 .00878 Al1 .88868 .05457 -.00250 .04 .00878 Fe2 .93508 .73909 .25 .95 .00950 Mn2 .93508 .73909 .25 .05 .00950 Si1 .96364 .36719 .25 .00757 Si2 .68322 .23152 .25 .00695 O1 .01507 .02534 .75 .01265 O2 .93994 .27073 .01641 .01065 O3 .78199 .11239 .25 .00939 O4 .67321 .33364 .01744 .01038 O5 .58908 .10482 .25 .01108 O6 .59638 .02413 .75 .01602 O7 .80464 .11229 .75 .01247