data_global
_chemical_name_mineral 'Bismutoferrite'
loop_
_publ_author_name
'Zhukhlistov A P'
'Zvyagin B B'
_journal_name_full 'Soviet Physics Crystallography'
_journal_volume 22 
_journal_year 1977
_journal_page_first 419
_journal_page_last 423
_publ_section_title
;
 Determination of the crystal structures of chapmanite and bismuthoferrite by
 high-voltage electron diffraction
;
_database_code_amcsd 0015576
_chemical_compound_source 'Schneeberg, Saxony, Germany'
_chemical_formula_sum 'Bi Fe2 Si2 O9 H'
_cell_length_a 5.21
_cell_length_b 9.02
_cell_length_c 7.74
_cell_angle_alpha 90
_cell_angle_beta 100.667
_cell_angle_gamma 90
_cell_volume 357.450
_exptl_crystal_density_diffrn      4.849
_symmetry_space_group_name_H-M 'C 1 m 1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2+y,z'
  'x,-y,z'
  '1/2+x,1/2-y,z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
Bi   0.41300   0.50000   0.71600
Fe   0.50000   0.16500   0.00000
Si   0.31600   0.16600   0.36900
O1   0.29500   0.32800  -0.14400
O2   0.31700   0.00000  -0.12800
O3   0.21900   0.17000   0.14300
O-H   0.68400   0.00000   0.14500
O4   0.08100   0.24800   0.44800
O5   0.32600   0.00000   0.42900