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: RGB - enamel
_database_code_amcsd 0002293
9.4506 9.4506 6.8780 90 90 120 P6_3/m
atom     x     y     z occ
Ca1    2/3   1/3 .0021 .97
Na1    2/3   1/3 .0021 .02
Mg1    2/3   1/3 .0021 .01
Ca2  .2464 .9907   .25 .94
Na2  .2464 .9907   .25 .02
Mg2  .2464 .9907   .25 .01
P    .3992 .3692   .25 .95
O1   .3322 .4864   .25 .94
O2   .5802 .4608   .25 .97
O3   .3399 .2565 .0697 .92
Oh       0     0 .1851 .51
H        0     0 .0608