data_9001232
_chemical_name 'Fluorapatite'
loop_
_publ_author_name
'Hughes J M'
'Cameron M'
'Crowley K D'
_journal_name_full "American Mineralogist"
_journal_volume 74
_journal_year 1989
_journal_page_first 870
_journal_page_last 876
_publ_section_title
;
 Structural variations in natural F, OH, and Cl apatites
 Locality: Durango Mexico
;
_chemical_formula_sum 'Ca5 P3 O12 F'
_cell_length_a 9.3973
_cell_length_b 9.3973
_cell_length_c 6.8782
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 120
_cell_volume 526.031
_symmetry_space_group_name_H-M 'P 63/m'
loop_
_symmetry_equiv_pos_as_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
Ca1   0.66667   0.33333   0.00100
Ca2  -0.00712   0.24227   0.25000
P   0.36895   0.39850   0.25000
O1   0.48490   0.32730   0.25000
O2   0.46670   0.58750   0.25000
O3   0.25750   0.34210   0.07050
F   0.00000   0.00000   0.25000