data_global
_chemical_name_mineral 'Hydroxylapatite'
loop_
_publ_author_name
'Wilson R M'
'Elliot J C'
'Dowker S E P'
_journal_name_full 'American Mineralogist'
_journal_volume 84 
_journal_year 1999
_journal_page_first 1406
_journal_page_last 1414
_publ_section_title
;
 Rietveld refinement of the crystallographic structure of human dental
 enamel apatites
 Sample: H6G, synthetic
;
_database_code_amcsd 0002282
_chemical_formula_sum 'Ca5 P3 O13 H2'
_cell_length_a 9.4394
_cell_length_b 9.4394
_cell_length_c 6.8861
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 120
_cell_volume 531.365
_exptl_crystal_density_diffrn      3.146
_symmetry_space_group_name_H-M 'P 63/m'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '-x+y,-x,1/2-z'
  'x-y,x,1/2+z'
  'y,-x+y,-z'
  '-y,x-y,z'
  'x,y,1/2-z'
  '-x,-y,1/2+z'
  'x-y,x,-z'
  '-x+y,-x,z'
  '-y,x-y,1/2-z'
  'y,-x+y,1/2+z'
  '-x,-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
Ca1   0.66667   0.33333   0.00210   1.00000
Ca2   0.24780   0.99170   0.25000   1.00000
P   0.39950   0.36910   0.25000   1.00000
O1   0.33190   0.48620   0.25000   1.00000
O2   0.58060   0.46140   0.25000   1.00000
O3   0.34370   0.25930   0.06970   1.00000
O-H   0.00000   0.00000   0.19060   0.50000
H   0.00000   0.00000   0.06080   0.50000