data_global
_chemical_name_mineral 'Fluorapatite'
loop_
_publ_author_name
'Hughes J M'
'Cameron M'
'Crowley K D'
_journal_name_full 'American Mineralogist'
_journal_volume 76 
_journal_year 1991
_journal_page_first 1857
_journal_page_last 1862
_publ_section_title
;
 Ordering of divalent cations in the apatite structure: Crystal structure
 refinements of natural Mn- and Sr-bearing apatite
 sample Mn1.21
;
_database_code_amcsd 0001423
_chemical_formula_sum '(Ca4.395 Mn.605) P3 O12 F.74'
_cell_length_a 9.3430
_cell_length_b 9.3430
_cell_length_c 6.8227
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 120
_cell_volume 515.774
_exptl_crystal_density_diffrn      3.273
_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
_atom_site_U_iso_or_equiv
Ca1   0.66667   0.33333   0.00210   0.79500   0.01199
Mn1   0.66667   0.33333   0.00210   0.20500   0.01199
Ca2  -0.00708   0.24157   0.25000   0.93500   0.00951
Mn2  -0.00708   0.24157   0.25000   0.06500   0.00951
P   0.36997   0.39878   0.25000   1.00000   0.00899
O1   0.48830   0.32980   0.25000   1.00000   0.01507
O2   0.46560   0.58820   0.25000   1.00000   0.02546
O3   0.25810   0.34060   0.07020   1.00000   0.02368
F   0.00000   0.00000   0.25000   0.74000   0.02926