Hydroxylapatite
Wilson R M, Elliot J C, Dowker S E P
American Mineralogist 84 (1999) 1406-1414
Rietveld refinement of the crystallographic structure of human dental
enamel apatites
Sample: RC1 - enamel
_database_code_amcsd 0002285
9.4623 9.4623 6.8863 90 90 120 P6_3/m
atom     x     y     z occ
Ca1    2/3   1/3 .0014 .97
Na1    2/3   1/3 .0014 .02
Mg1    2/3   1/3 .0014 .01
Ca2  .2450 .9895   .25 .93
Na2  .2450 .9895   .25 .02
Mg2  .2450 .9895   .25 .01
P    .3987 .3697   .25 .92
O1   .3317 .4864   .25 .91
O2   .5752 .4555   .25 .95
O3   .3427 .2587 .0734 .89
Oh       0     0 .1880 .48
H        0     0 .0608 .58