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: PN6-690, Crystal at room temperature, annealed at 690 C for 48 hrs
_database_code_amcsd 0002854
13.015 8.873 5.816 90 90 90 Pnam
atom      x      y       z occ   Uiso
CaA  .81955 .37599     .75 .98  .0132
MnA  .81955 .37599     .75 .02  .0132
FeM1 .88830 .05682 -.00600      .0094
MnM2 .92869 .73676     .25 .72 .01110
FeM2 .92869 .73676     .25 .28 .01110
Si1   .9666  .3638     .25      .0095
Si2   .6869  .2349     .25      .0073
O1    .0162  .0198     .75      .0137
O2    .9439  .2683   .0143      .0125
O3    .7850  .1144     .25      .0120
O4    .6761  .3358   .0159      .0135
O5    .5922  .1091     .25      .0128
O6    .5928  .0181     .75      .0219
O7    .8095  .1151     .75      .0114