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 = 3.587 GPa
_database_code_amcsd 0005009
9.518 8.804 5.056 90 104.04 90 C2/c
atom     x     y     z  occ  Uiso
FeA      0 .9063   .25 .253 .0096
MgA      0 .9063   .25 .747 .0096
FeB      0 .2775   .25 .755 .0150
MgB      0 .2775   .25 .124 .0150
CaB      0 .2775   .25 .121 .0150
Si   .2957 .0905 .2240      .0075
Al   .2957 .0905 .2240      .0075
O1   .1221 .0895 .1431       .010
O2   .3741 .2400 .3598       .012
O3   .3521 .0485  .948       .015