Pigeonite
Alvaro M, Nestola F, Ballaran T B, Camara F, Domeneghetti M C, Tazzoli V
American Mineralogist 95 (2010) 300-311
High-pressure phase transition of a natural pigeonite
Locality: Parana, Brazil
Note: P = 3.649 GPa
_database_code_amcsd 0005010
9.494 8.818 5.060 90 104.11 90 C2/c
atom     x     y     z  occ  Uiso
FeA      0 .9064   .25 .253 .0098
MgA      0 .9064   .25 .747 .0098
FeB      0 .2779   .25 .755 .0157
MgB      0 .2779   .25 .124 .0157
CaB      0 .2779   .25 .121 .0157
Si   .2956 .0905 .2237  .99 .0081
Al   .2956 .0905 .2237  .01 .0081
O1   .1216 .0893  .143       .001
O2   .3732 .2395  .360       .012
O3   .3517 .0496  .945       .015