Apatite-(CaF)
Hughes J M, Cameron M, Mariano A N
American Mineralogist 76 (1991) 1165-1173
Rare-earth-element ordering and structural variations in natural
rare-earth-bearing apatites
sample from Kipawa, Quebec
_database_code_amcsd 0001378
9.3908 9.3908 6.8988 90 90 120 P6_3/m
atom      x      y     z  occ  Biso
Ca1     2/3    1/3 .0007 .936 1.023
Na1     2/3    1/3 .0007 .025 1.023
Ce1     2/3    1/3 .0007 .039 1.023
Ca2  .99123 .24026   .25 .923 1.018
Ce2  .99123 .24026   .25 .077 1.018
P    .36928 .39832   .25 .927   .72
Si   .36928 .39832   .25 .073   .72
O1    .4843  .3261   .25       1.09
O2    .4667  .5875   .25       1.23
O3    .2572  .3417 .0704       1.47
F         0      0   .25        2.7