Ilvaite Bonazzi P, Bindi L American Mineralogist 87 (2002) 845-852 Structural properties and heat-induced oxidation-dehydrogenation of manganoan ilvaite from perda Niedda mine, Sardinia, Italy Sample: PN6-600, Crystal at room temperature, annealed at 600 C for 48 hrs _database_code_amcsd 0002851 12.993 8.864 5.837 90 90 90 Pnam atom x y z occ Uiso CaA .81602 .37350 .75 .98 .0102 MnA .81602 .37350 .75 .02 .0102 FeM1 .88944 .05336 -.00094 .0086 MnM2 .93451 .73764 .25 .72 .0092 FeM2 .93451 .73764 .25 .28 .0092 Si1 .9623 .3655 .25 .0069 Si2 .6829 .2303 .25 .0071 O1 .0132 .0229 .75 .0127 O2 .9393 .2699 .0151 .0105 O3 .7809 .1111 .25 .0085 O4 .6734 .3326 .0184 .0094 O5 .5880 .1054 .25 .0111 O6 .5995 .0195 .75 .0172 O7 .8026 .1140 .75 .0121 H .788 .058 .75 .07