data_global _chemical_name_mineral 'Boulangerite' loop_ _publ_author_name 'Skowron A' 'Brown I D' _journal_name_full 'Acta Crystallographica, Section C' _journal_volume 46 _journal_year 1990 _journal_page_first 531 _journal_page_last 534 _publ_section_title ; Refinement of the structure of boulangerite, Pb5Sb4S11 ; _database_code_amcsd 0010118 _chemical_compound_source 'Synthetic' _chemical_formula_sum 'Sb4.35 Pb4.65 S11' _cell_length_a 23.490 _cell_length_b 21.245 _cell_length_c 4.020 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 2006.161 _exptl_crystal_density_diffrn 6.111 _symmetry_space_group_name_H-M 'P n a m' loop_ _space_group_symop_operation_xyz 'x,y,z' 'x,y,1/2-z' '-x,-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,z' '1/2-x,1/2+y,-z' '-x,-y,-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_occupancy _atom_site_U_iso_or_equiv SbM1 0.26750 0.55050 0.75000 0.76000 0.03500 PbM1 0.26750 0.55050 0.75000 0.24000 0.03500 SbM2 0.43250 0.45800 0.75000 0.50000 0.03700 PbM2 0.43250 0.45800 0.75000 0.50000 0.03700 SbM3 0.59750 0.36880 0.75000 0.41000 0.03100 PbM3 0.59750 0.36880 0.75000 0.59000 0.03100 SbM1O 0.46250 0.28890 0.75000 1.00000 0.03100 SbM11 0.29530 0.38200 0.75000 1.00000 0.04300 SbM12 0.12900 0.48550 0.75000 0.68000 0.03200 PbM12 0.12900 0.48550 0.75000 0.32000 0.03200 PbM13 0.00210 0.61790 0.75000 1.00000 0.03200 PbM14 0.16020 0.30620 0.25000 1.00000 0.02100 PbM15 0.32290 0.20800 0.25000 1.00000 0.02200 S1 0.67430 0.34540 0.25000 1.00000 0.02200 S2 0.51660 0.43040 0.25000 1.00000 0.02200 S3 0.36200 0.51470 0.25000 1.00000 0.02100 S4 0.20570 0.59620 0.25000 1.00000 0.03300 S10 0.41370 0.18760 0.75000 1.00000 0.01700 S11 0.24860 0.27800 0.75000 1.00000 0.01500 S12 0.08780 0.37170 0.75000 1.00000 0.01500 S13 0.05930 0.51260 0.25000 1.00000 0.03300 S14 0.21800 0.41870 0.25000 1.00000 0.02400 S15 0.37250 0.33190 0.25000 1.00000 0.03000 S16 0.52930 0.25310 0.25000 1.00000 0.02300