data_global _chemical_name_mineral 'Crocoite' loop_ _publ_author_name 'Quareni S' 'De Pieri R' _journal_name_full 'Acta Crystallographica' _journal_volume 19 _journal_year 1965 _journal_page_first 287 _journal_page_last 289 _publ_section_title ; A three-dimensional refinement of the structure of crocoite, PbCrO4 ; _database_code_amcsd 0009297 _chemical_formula_sum 'Pb Cr O4' _cell_length_a 7.120 _cell_length_b 7.430 _cell_length_c 6.790 _cell_angle_alpha 90 _cell_angle_beta 102.42 _cell_angle_gamma 90 _cell_volume 350.796 _exptl_crystal_density_diffrn 6.120 _symmetry_space_group_name_H-M 'P 1 21/n 1' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+x,1/2-y,1/2+z' '1/2-x,1/2+y,1/2-z' '-x,-y,-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z Pb 0.22180 0.14500 0.39740 Cr 0.20100 0.16510 0.88000 O1 0.03540 0.09890 0.69440 O2 0.12470 0.34610 0.98690 O3 0.25340 0.49820 0.45400 O4 0.38870 0.21730 0.78100