data_global
_chemical_name_mineral 'Neighborite'
loop_
_publ_author_name
'Martin C D'
'Crichton W A'
'Liu H'
'Prakapenka V'
'Chen J'
'Parise J B'
_journal_name_full 'American Mineralogist'
_journal_volume 91 
_journal_year 2006
_journal_page_first 1703
_journal_page_last 1706
_publ_section_title
;
 Rietveld structure refinement of perovskite and post-perovskite phases of
 NaMgF3 (neighborite) at high pressures
 Sample: (a), P = 27 GPa
;
_database_code_amcsd 0004239
_chemical_compound_source 'Synthetic'
_chemical_formula_sum 'Na Mg F3'
_cell_length_a 4.8904
_cell_length_b 5.2022
_cell_length_c 7.1403
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 181.655
_exptl_crystal_density_diffrn      3.813
_symmetry_space_group_name_H-M 'P b n m'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  'x,y,1/2-z'
  '-x,-y,1/2+z'
  '1/2+x,1/2-y,1/2+z'
  '1/2-x,1/2+y,1/2-z'
  '1/2-x,1/2+y,z'
  '1/2+x,1/2-y,-z'
  '-x,-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
Na   0.97710   0.08020   0.25000
Mg   0.00000   0.50000   0.00000
F1   0.10190   0.46970   0.25000
F2   0.67500   0.31100   0.06190