Perrierite-(Ce)
Gottardi G
American Mineralogist 45 (1960) 1-14
The crystal structure of perrierite
_database_code_amcsd 0000090
13.61 5.62 11.63 90 113.47 90 C2/m
atom     x   y    z  occ Biso
Si1  .4085   0 .734  .96  .65
Al1  .4085   0 .734  .04  .65
Si2  .1615   0 .546  .96  .65
Al2  .1615   0 .546  .04  .65
Ti       0 .25    0       .65
Ti     .27   0    0  .74  .65
Fe     .27   0    0  .12  .65
Mg     .27   0    0  .12  .65
Fe       0  .5   .5  .63  .65
Ca       0  .5   .5  .34  .65
Ce1   .238   0 .266 .578  .65
La1   .238   0 .266 .125  .65
Y1    .238   0 .266 .040  .65
Th1   .238   0 .266 .048  .65
Ca1   .238   0 .266 .133  .65
Na1   .238   0 .266 .078  .65
Ce2   .047   0 .742 .578  .65
La2   .047   0 .742 .125  .65
Y2    .047   0 .742 .040  .65
Th2   .047   0 .742 .048  .65
Ca2   .047   0 .742 .133  .65
Na2   .047   0 .742 .078  .65
O1    .085 .25 .194       .65
O2    .291 .25 .123       .65
O3   .3745 .25 .400       .65
O4    .103   0 .997       .65
O5    .397   0 .003       .65
O6    .492   0 .660       .65
O7    .286   0 .657       .65
O8   .1385   0 .399       .65