data_global
_chemical_name_mineral 'Sphaerobismoite'
loop_
_publ_author_name
'Blower S K'
'Greaves C'
_journal_name_full 'Acta Crystallographica, Section C'
_journal_volume 44 
_journal_year 1988
_journal_page_first 587
_journal_page_last 589
_publ_section_title
;
 The structure of beta-Bi2O3 from powder neutron diffraction data
;
_database_code_amcsd 0010069
_chemical_compound_source 'Synthetic'
_chemical_formula_sum 'Bi2 O3'
_cell_length_a 7.739
_cell_length_b 7.739
_cell_length_c 5.636
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 337.552
_exptl_crystal_density_diffrn      9.169
_symmetry_space_group_name_H-M 'P -4 21 c'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2-y,1/2-x,1/2+z'
  'y,-x,-z'
  '1/2-x,1/2+y,1/2-z'
  '-x,-y,z'
  '1/2+y,1/2+x,1/2+z'
  '-y,x,-z'
  '1/2+x,1/2-y,1/2-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
Bi   0.01740   0.25450   0.23850   0.01406
O1   0.29050   0.31250   0.02860   0.02166
O2   0.00000   0.50000   0.39390   0.01608