data_global
_chemical_name_mineral 'Ferroselite'
loop_
_publ_author_name
'Tengner S'
_journal_name_full 'Zeitschrift fur Anorganische und Allgemeine Chemie'
_journal_volume 239 
_journal_year 1938
_journal_page_first 126
_journal_page_last 132
_publ_section_title
;
 Uber diselenide und ditelluride von eisen, kobalt und nickel
;
_database_code_amcsd 0015754
_chemical_formula_sum 'Fe Se2'
_cell_length_a 3.575
_cell_length_b 4.791
_cell_length_c 5.715
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 97.886
_exptl_crystal_density_diffrn      7.253
_symmetry_space_group_name_H-M 'P m n n'
loop_
_space_group_symop_operation_xyz
  'x,y,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,1/2+z'
  '1/2-x,1/2+y,1/2-z'
  '-x,y,z'
  'x,-y,-z'
  '-x,-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
Fe   0.00000   0.00000   0.00000
Se   0.00000   0.21000   0.37000