data_global
_chemical_name_mineral 'Westerveldite'
loop_
_publ_author_name
'Fylking K'
_journal_name_full 'Arkiv for Kemi, Mineralogi och Geologi'
_journal_volume B11 
_journal_year 1934
_journal_page_first 1
_journal_page_last 6
_publ_section_title
;
 Phosphides and arsenides with modified nickel-arsenide structure
 _cod_database_code 1011285
;
_database_code_amcsd 0018135
_chemical_formula_sum 'Fe As'
_cell_length_a 6.016
_cell_length_b 5.428
_cell_length_c 3.366
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 109.916
_exptl_crystal_density_diffrn      7.902
_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
Fe1   0.19000   0.01000   0.25000
As1   0.58000   0.20000   0.25000