data_global _chemical_name_mineral 'Moschellandsbergite' loop_ _publ_author_name 'Fairhurst C W' 'Cohen J B' _journal_name_full 'Acta Crystallographica, Section B' _journal_volume 28 _journal_year 1972 _journal_page_first 371 _journal_page_last 378 _publ_section_title ; The crystal structure of two compounds found in dental amalgam: Ag2Hg3 and Ag3Sn ; _database_code_amcsd 0009425 _chemical_compound_source 'Synthetic' _chemical_formula_sum 'Ag5 Hg7.55' _cell_length_a 10.0506 _cell_length_b 10.0506 _cell_length_c 10.0506 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 1015.257 _exptl_crystal_density_diffrn 13.437 _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 _atom_site_occupancy Ag1 0.32850 0.32850 0.32850 1.00000 Ag2 0.35500 0.00000 0.00000 1.00000 Hg1 0.11510 0.11510 0.11510 1.00000 Hg2 0.29570 0.33590 0.02910 0.92500 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 Ag1 0.00461 0.00461 0.00461 0.00154 0.00154 0.00154 Ag2 0.01177 0.01638 0.00870 0.00000 0.00000 0.00154 Hg1 0.01945 0.01945 0.01945 0.00307 0.00307 0.00307 Hg2 0.00819 0.02559 0.01177 -0.00205 -0.00256 -0.00563