data_global _chemical_name_mineral 'Vikingite' loop_ _publ_author_name 'Makovicky E' 'Mumme W G' 'Madsen I C' _journal_name_full 'Neues Jahrbuch fur Mineralogie, Monatshefte' _journal_volume 1992 _journal_year 1992 _journal_page_first 454 _journal_page_last 468 _publ_section_title ; The crystal structure of vikingite ; _database_code_amcsd 0014865 _chemical_compound_source 'La Roche Balue, France' _chemical_formula_sum 'Bi5.78 Ag1.78 Pb5.44 S15' _cell_length_a 13.598 _cell_length_b 4.112 _cell_length_c 25.2490 _cell_angle_alpha 90 _cell_angle_beta 95.59 _cell_angle_gamma 90 _cell_volume 1405.083 _exptl_crystal_density_diffrn 7.110 _symmetry_space_group_name_H-M 'C 1 2/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' '-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 _atom_site_occupancy _atom_site_U_iso_or_equiv BiMe1 0.37030 0.00000 0.03940 0.97000 ? AgMe1 0.37030 0.00000 0.03940 0.03000 ? AgMe2 0.10230 0.00000 0.10730 0.48000 ? BiMe2 0.10230 0.00000 0.10730 0.52000 ? PbMe3 0.34970 0.50000 0.19350 1.00000 ? AgMe4 0.13330 0.00000 0.28290 0.38000 ? PbMe4 0.13330 0.00000 0.28290 0.22000 ? BiMe4 0.13330 0.00000 0.28290 0.40000 ? BiMe5 0.42610 0.00000 0.35140 1.00000 ? PbMe6 0.21520 0.50000 0.42680 1.00000 ? PbMe7 0.00000 0.00000 0.50000 1.00000 ? S1 0.00000 0.00000 0.00000 1.00000 0.04660 S2 0.25660 0.50000 0.07530 1.00000 0.03150 S3 0.47780 0.00000 0.12950 1.00000 0.03180 S4 0.20950 0.00000 0.19480 1.00000 0.03700 S5 0.50090 0.00000 0.26020 1.00000 0.02300 S6 0.29420 0.50000 0.31740 1.00000 0.01810 S7 0.06930 0.00000 0.39140 1.00000 0.01720 S8 0.35600 0.00000 0.46680 1.00000 0.01370 loop_ _atom_site_aniso_label _atom_site_aniso_U_11 _atom_site_aniso_U_22 _atom_site_aniso_U_33 _atom_site_aniso_U_12 _atom_site_aniso_U_13 _atom_site_aniso_U_23 BiMe1 0.05180 0.02630 0.01500 0.00000 0.01420 0.00000 AgMe1 0.05180 0.02630 0.01500 0.00000 0.01420 0.00000 AgMe2 0.05500 0.03800 0.02780 0.00000 0.01110 0.00000 BiMe2 0.05500 0.03800 0.02780 0.00000 0.01110 0.00000 PbMe3 0.05150 0.03400 0.03870 0.00000 0.01190 0.00000 AgMe4 0.07850 0.04320 0.02880 0.00000 0.01260 0.00000 PbMe4 0.07850 0.04320 0.02880 0.00000 0.01260 0.00000 BiMe4 0.07850 0.04320 0.02880 0.00000 0.01260 0.00000 BiMe5 0.05130 0.02860 0.01690 0.00000 0.01340 0.00000 PbMe6 0.05320 0.03450 0.02080 0.00000 0.01500 0.00000 PbMe7 0.05730 0.02940 0.02140 0.00000 0.01510 0.00000