data_global
_chemical_name_mineral 'Nefedovite'
loop_
_publ_author_name
'Sebals M'
'Dorokhova G I'
'Pobedimskaya E A'
'Khomyakov A P'
_journal_name_full 'Doklady Akademii Nauk SSSR'
_journal_volume 278 
_journal_year 1984
_journal_page_first 353
_journal_page_last 357
_publ_section_title
;
 The crystal structure of nefedovite and its typomorphism
;
_database_code_amcsd 0012476
_chemical_formula_sum 'Na5 Ca4 P4 O16 F'
_cell_length_a 11.644
_cell_length_b 11.644
_cell_length_c 5.396
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 731.604
_exptl_crystal_density_diffrn      3.060
_symmetry_space_group_name_H-M 'I -4'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2+y,1/2+z'
  'y,-x,-z'
  '1/2+y,1/2-x,1/2-z'
  '-x,-y,z'
  '1/2-x,1/2-y,1/2+z'
  '-y,x,-z'
  '1/2-y,1/2+x,1/2-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
Na1   0.09430   0.38860  -0.00800   0.01558
Na2   0.00000   0.00000   0.50000   0.01393
Ca   0.17860   0.11140   0.01810   0.00481
P   0.10450   0.24990   0.48980   0.00532
O1   0.03850   0.21680   0.25600   0.01013
O2   0.10360   0.38050   0.52300   0.01368
O3   0.22770   0.20790   0.45400   0.00899
O4   0.04980   0.19430   0.72100   0.01089
F   0.00000   0.00000   0.00000   0.01140