data_global
_chemical_name_mineral 'Neighborite'
loop_
_publ_author_name
'Chen J'
'Liu H'
'Martin C D'
'Parise J B'
'Weidner D J'
_journal_name_full 'American Mineralogist'
_journal_volume 90 
_journal_year 2005
_journal_page_first 1534
_journal_page_last 1539
_publ_section_title
;
 Crystal chemistry of NaMgF3 perovskite and high pressure and temperature
 Sample: P = 4 GPa, T = 900 C
;
_database_code_amcsd 0003930
_chemical_formula_sum 'Na Mg F3'
_cell_length_a 5.4480
_cell_length_b 5.4677
_cell_length_c 7.7366
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 230.458
_exptl_crystal_density_diffrn      3.006
_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
_atom_site_U_iso_or_equiv
Na   0.99670   0.01910   0.25000   0.12100
Mg   0.00000   0.50000   0.00000   0.05300
F1   0.03070   0.47880   0.25000   0.58000
F2   0.72400   0.28350   0.02950   0.07700