data_global
_chemical_name_mineral 'Barberiite'
loop_
_publ_author_name
'Hoard J'
'Blair V'
_journal_name_full 'Journal of the American Chemical Society'
_journal_volume 57 
_journal_year 1935
_journal_page_first 1985
_journal_page_last 1988
_publ_section_title
;
 The crystal structures of rubidium and ammonium fluoborates
 _cod_database_code 1011135
;
_database_code_amcsd 0018024
_chemical_formula_sum 'N B F4'
_cell_length_a 9.06
_cell_length_b 5.64
_cell_length_c 7.23
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 369.441
_exptl_crystal_density_diffrn      1.812
_symmetry_space_group_name_H-M 'P n m a'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  'x,1/2-y,z'
  '-x,1/2+y,-z'
  '1/2-x,1/2+y,1/2+z'
  '1/2+x,1/2-y,1/2-z'
  '1/2+x,y,1/2-z'
  '1/2-x,-y,1/2+z'
  '-x,-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
NH4   0.30800   0.25000   0.32800
B1   0.94700   0.25000   0.69700
F1   0.08600   0.25000   0.60300
F2   0.83000   0.25000   0.56300
F3   0.93600   0.04300   0.81100