data_global
_chemical_name_mineral 'Sillenite'
loop_
_publ_author_name
'Sillen L'
_journal_name_full 'Arkiv for Kemi, Mineralogi och Geologi'
_journal_volume A12 
_journal_year 1938
_journal_page_first 1
_journal_page_last 15
_publ_section_title
;
 X-Ray studies on bismuth trioxide
 _cod_database_code 1010314
;
_database_code_amcsd 0017240
_chemical_compound_source 'Synthetic'
_chemical_formula_sum 'Bi12 O20 Si'
_cell_length_a 10.08
_cell_length_b 10.08
_cell_length_c 10.08
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 1024.193
_exptl_crystal_density_diffrn      9.260
_symmetry_space_group_name_H-M 'I 2 3'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2+y,1/2+z'
  '-z,-x,y'
  '1/2-z,1/2-x,1/2+y'
  '-z,x,-y'
  '1/2-z,1/2+x,1/2-y'
  'z,-x,-y'
  '1/2+z,1/2-x,1/2-y'
  'z,x,y'
  '1/2+z,1/2+x,1/2+y'
  'y,-z,-x'
  '1/2+y,1/2-z,1/2-x'
  '-y,-z,x'
  '1/2-y,1/2-z,1/2+x'
  '-y,z,-x'
  '1/2-y,1/2+z,1/2-x'
  'y,z,x'
  '1/2+y,1/2+z,1/2+x'
  '-x,y,-z'
  '1/2-x,1/2+y,1/2-z'
  'x,-y,-z'
  '1/2+x,1/2-y,1/2-z'
  '-x,-y,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
Bi1   0.32000   0.18000   0.02000
O1   0.37000  -0.02000   0.16000
O2   0.23000   0.23000   0.23000
O3  -0.11000  -0.11000  -0.11000
Si1   0.00000   0.00000   0.00000