Fluorapatite
Fleet M E, Pan Y
American Mineralogist 80 (1995) 329-335
Site preference of rare earth elements in fluorapatite
Sample: Gd-FAp
_database_code_amcsd 0001725
9.3853 9.3853 6.8876 90 90 120 P6_3/m
atom      x      y      z  occ Biso
Ca1     2/3    1/3 .00033 .886  .80
Na1     2/3    1/3 .00033 .076  .80
Gd1     2/3    1/3 .00033 .038  .80
Ca2  .99174 .24226    .25 .916 .643
Na2  .99174 .24226    .25 .007 .643
Gd2  .99174 .24226    .25 .077 .643
P    .36842 .39729    .25 .953 .465
Si   .36842 .39729    .25 .047 .465
O1    .4836  .3251    .25       .93
O2    .4670  .5873    .25      1.08
O3    .2560  .3406  .0707      1.30
F         0      0    .25      2.46