Hydroxylapatite Sudarsanan K, Young R A Acta Crystallographica B25 (1969) 1534-1543 Significant precision in crystal structural details: Holly Springs hydroxyapatite Locality: Holly Springs, Cherokee County, Georgia, USA Sample: X-23-10 _database_code_amcsd 0009355 9.424 9.424 6.879 90 90 120 P6_3/m atom x y z occ B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3) CaI 1/3 2/3 .0014 .0032 .0032 .0022 .0016 0 0 CaII .2468 .9934 .25 .0021 .0024 .0030 .0010 0 0 P .3987 .3685 .25 .0020 .0017 .0027 .0011 0 0 OI .3282 .4847 .25 .0040 .0029 .0054 .0026 0 0 OII .5872 .4652 .25 .0019 .0028 .0102 .0011 0 0 OIII .3438 .2581 .0704 .0087 .0045 .0053 .0044 -.0042 -.0024 Oh 0 0 .1955 .5 .0026 .0026 .0098 .0013 0 0 H 0 0 .0608 .5 .0129 .0129 .0104 .00645 0 0