Apatite-(CaF)
Hughes J M, Cameron M, Crowley K D
American Mineralogist 76 (1991) 1857-1862
Ordering of divalent cations in the apatite structure: Crystal structure
refinements of natural Mn- and Sr-bearing apatite
sample Mn1.21
_database_code_amcsd 0001427
9.3430 9.3430 6.8227 90 90 120 P6_3/m
atom       x      y     z  occ Biso
Ca1      2/3    1/3 .0021 .795 .947
Mn1      2/3    1/3 .0021 .205 .947
Ca2  -.00708 .24157   .25 .935 .751
Mn2  -.00708 .24157   .25 .065 .751
P     .36997 .39878   .25       .71
O1     .4883  .3298   .25      1.19
O2     .4656  .5882   .25      2.01
O3     .2581  .3406 .0702      1.87
F          0      0   .25 .740 2.31