data_global
_chemical_name_mineral 'Boulangerite'
loop_
_publ_author_name
'Born L'
'Hellner E'
_journal_name_full 'American Mineralogist'
_journal_volume 45
_journal_year 1960
_journal_page_first 1266
_journal_page_last 1271
_publ_section_title
;
 A structural proposal for boulangerite
;
_database_code_amcsd 96
_chemical_compound_source 'Pribram, Bohemia'
_chemical_formula_sum 'Pb4.5 Sb4.5 S11'
_cell_length_a 42.28
_cell_length_b 23.46
_cell_length_c 8.07
_cell_angle_alpha 90.0
_cell_angle_beta 90.0
_cell_angle_gamma 90.0
_cell_volume 8004.542
_exptl_crystal_density_diffrn  3.042
_symmetry_space_group_name_H-M 'B b 21 m'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,y,1/2+z'
  '-x,1/2+y,z'
  '1/2-x,1/2+y,1/2+z'
  'x,y,-z'
  '1/2+x,y,1/2-z'
  '-x,1/2+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
_atom_site_occupancy
Pb1   0.307  0.16  0.25  1.0
Pb2   0.117  0.498  0.25  1.0
Pb3   0.206  0.323  0.25  1.0
Pb4   0.458  0.433  0.75  0.5
Sb4   0.458  0.433  0.75  0.5
Pb5   0.132  0.098  0.75  0.5
Sb5   0.132  0.098  0.75  0.5
Pb6   0.486  0.129  0.75  0.5
Sb6   0.486  0.129  0.75  0.5
Sb7   0.287  0.462  0.75  1.0
Sb8   0.046  0.232  0.25  1.0
Sb9a   0.388  0.283  0.75  0.5
Sb9b   0.372  0.307  0.75  0.5
S1   0.069  0.017  0.25  1.0
S2   0.247  0.028  0.25  1.0
S3   0.156  0.175  0.25  1.0
S4   0.42  0.219  0.25  1.0
S5   0.33  0.375  0.25  1.0
S6   0.372  0.088  0.75  1.0
S7   0.014  0.138  0.75  1.0
S8   0.278  0.251  0.75  1.0
S9   0.096  0.295  0.75  1.0
S10   0.186  0.415  0.75  1.0
S11   0.013  0.441  0.75  1.0