Ilvaite Bonazzi P, Bindi L American Mineralogist 84 (1999) 1604-1612 Structural adjustments induced by heat treatment in ilvaite Sample: RM at T = 700 deg C _database_code_amcsd 0002327 13.006 8.804 5.836 90 90 90 Pnam atom x y z occ Uiso Ca .81636 .37376 .75 .01285 Fe1 .88856 .05505 -.00357 .93 .01016 Mg1 .88856 .05505 -.00357 .03 .01016 Al1 .88856 .05505 -.00357 .04 .01016 Fe2 .93421 .73921 .25 .95 .01120 Mn2 .93421 .73921 .25 .05 .01120 Si1 .96437 .36704 .25 .00966 Si2 .68385 .23199 .25 .00801 O1 .01573 .02467 .75 .01451 O2 .94065 .27065 .01616 .01267 O3 .78262 .11255 .25 .01139 O4 .67356 .33367 .01641 .01305 O5 .58968 .10488 .25 .01315 O6 .59543 .02378 .75 .01897 O7 .80613 .11229 .75 .01357