data_global _chemical_name_mineral 'Litochlebite' loop_ _publ_author_name 'Sejkora J' 'Makovicky E' 'Topa D' 'Putz H' 'Zagler G' 'Pasil J' _journal_name_full 'The Canadian Mineralogist' _journal_volume 49 _journal_year 2011 _journal_page_first 639 _journal_page_last 650 _publ_section_title ; Litochlebite, Ag2PbBi4Se8, a new selenide mineral species from Zalesi, Czech Republic: description and crystal structure ; _database_code_amcsd 0018384 _chemical_compound_source 'Zalesi uranium deposit, northern Moravia, Czech Republic' _chemical_formula_sum 'Pb Bi4 Se8 Ag2' _cell_length_a 13.203 _cell_length_b 4.186 _cell_length_c 15.280 _cell_angle_alpha 90 _cell_angle_beta 109.164 _cell_angle_gamma 90 _cell_volume 797.692 _exptl_crystal_density_diffrn 7.871 _symmetry_space_group_name_H-M 'P 1 21/m 1' loop_ _space_group_symop_operation_xyz 'x,y,z' 'x,1/2-y,z' '-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 Pb1 0.23180 0.25000 0.32700 1.00000 0.03690 Bi1 0.04210 0.25000 0.88510 1.00000 0.02050 Bi2 0.56710 0.25000 0.29740 1.00000 0.02010 Bi3 0.70820 0.25000 0.90390 1.00000 0.02120 Bi4 0.92530 0.25000 0.37860 1.00000 0.02390 Se1 0.12190 0.25000 0.51060 1.00000 0.01530 Se2 0.13330 0.25000 0.11430 1.00000 0.01740 Se3 0.30340 0.25000 0.73000 1.00000 0.01770 Se4 0.43290 0.25000 0.07650 1.00000 0.01840 Se5 0.61860 0.25000 0.71020 1.00000 0.01940 Se6 0.65690 0.25000 0.48360 1.00000 0.03200 Se7 0.81630 0.25000 0.11960 1.00000 0.02040 Se8 0.95230 0.25000 0.69530 1.00000 0.01550 Ag1a 0.38000 0.25000 0.90260 0.86000 0.06100 Ag1b 0.37400 -0.07000 0.90200 0.07000 0.08000 Ag2a 0.47080 0.25000 0.52560 0.76000 0.09300 Ag2b 0.50000 0.00000 0.50000 0.24000 0.08000 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 Pb1 0.03080 0.02380 0.05700 0.00000 0.01610 0.00000 Bi1 0.02040 0.02150 0.01830 0.00000 0.00450 0.00000 Bi2 0.02360 0.02040 0.01760 0.00000 0.00850 0.00000 Bi3 0.02170 0.02090 0.01900 0.00000 0.00400 0.00000 Bi4 0.02200 0.02180 0.02500 0.00000 0.00310 0.00000 Se1 0.01000 0.01800 0.01700 0.00000 0.00300 0.00000 Se2 0.01700 0.01400 0.02100 0.00000 0.00600 0.00000 Se3 0.01900 0.01800 0.01700 0.00000 0.00700 0.00000 Se4 0.01800 0.01800 0.01900 0.00000 0.00500 0.00000 Se5 0.02200 0.01800 0.01900 0.00000 0.00700 0.00000 Se6 0.02700 0.05700 0.01500 0.00000 0.00900 0.00000 Se7 0.01900 0.01800 0.02300 0.00000 0.00400 0.00000 Se8 0.01700 0.01500 0.01400 0.00000 0.00500 0.00000 Ag1a 0.05900 0.11000 0.01400 0.00000 0.00800 0.00000 Ag1b 0.01000 0.16000 0.06000 0.00000 0.00400 0.00000 Ag2a 0.06600 0.12500 0.07800 0.00000 0.01200 0.00000