Carbonate-fluorapatite
Perdikatsis B
Materials Science Forum 79 (1991) 809-814
X-ray powder diffraction study of francolite by the Rietveld method
Locality: Epirus, Greece
Sample: T = 1200 C
Note: Reported structure does not reproduce reported formula or bondlengths
_database_code_amcsd 0014388
9.3708 9.3708 6.8880 90 90 120 P6_3/m
atom     x     y     z  occ  Biso
Ca1    1/3   2/3 .0005 .338 1.194
Ca2  .2410 .9915   .25 .500  .447
P    .3983 .3686   .25 .496  .296
O1   .3223 .4828   .25 .492  .420
O2   .5898 .4638   .25 .499 1.405
O3   .3412 .2558 .0695      1.074
F        0     0   .25 .169 4.091