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 = 530 C
Note: Reported structure does not reproduce reported formula or bondlengths
_database_code_amcsd 0014386
9.3230 9.3230 6.8987 90 90 120 P6_3/m
atom     x     y     z  occ  Biso
Ca1    1/3   2/3 .0016 .318 1.137
Ca2  .2403 .9897   .25 .478  .742
P    .3999 .3716   .25 .413  .708
O1   .3278 .4825   .25 .461  .773
O2   .5852 .4654   .25 .513 1.792
O3   .3435 .2595 .0677      2.071
F        0     0   .25 .163 1.761