data_global _chemical_name_mineral 'Minium' loop_ _publ_author_name 'Gross S T' _journal_name_full 'Journal of the American Chemical Society' _journal_volume 65 _journal_year 1943 _journal_page_first 1107 _journal_page_last 1110 _publ_section_title ; The crystal structure of Pb3O4 ; _database_code_amcsd 0014078 _chemical_compound_source 'Synthetic' _chemical_formula_sum 'Pb3 O4' _cell_length_a 8.86 _cell_length_b 8.86 _cell_length_c 6.66 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 522.807 _exptl_crystal_density_diffrn 8.710 _symmetry_space_group_name_H-M 'P -4 b 2' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+y,1/2+x,-z' 'y,-x,-z' '1/2+x,1/2-y,z' '-x,-y,z' '1/2-y,1/2-x,-z' '-y,x,-z' '1/2-x,1/2+y,z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z Pb4+ 0.00000 0.50000 0.00000 Pb2+1 0.00000 0.50000 0.50000 Pb2+2 0.14000 0.16500 0.25000 O1 0.17000 0.33000 0.50000 O2 0.17000 0.33000 0.00000 O3 0.40000 0.10000 0.25000