data_global _chemical_name_mineral 'Curite' loop_ _publ_author_name 'Li Y' 'Burns P C' _journal_name_full 'The Canadian Mineralogist' _journal_volume 38 _journal_year 2000 _journal_page_first 727 _journal_page_last 735 _publ_section_title ; Investigations of crystal-chemical variability in lead uranyl oxide hydrates. I. Curite Note: sample CMNMC 81093 ; _database_code_amcsd 0005663 _chemical_compound_source 'Shinkolobwe, Democratic Republic of Congo' _chemical_formula_sum 'U4 Pb.784 O16 H5' _cell_length_a 12.536 _cell_length_b 13.017 _cell_length_c 8.394 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 1369.742 _exptl_crystal_density_diffrn 6.671 _symmetry_space_group_name_H-M 'P n a m' loop_ _space_group_symop_operation_xyz 'x,y,z' 'x,y,1/2-z' '-x,-y,1/2+z' '1/2-x,1/2+y,1/2+z' '1/2+x,1/2-y,1/2-z' '1/2+x,1/2-y,z' '1/2-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 U(1) 0.20980 0.07610 0.25000 1.00000 0.02400 U(2) 0.19650 0.06520 0.75000 1.00000 0.02100 U(3) 0.30200 0.28510 -0.01320 1.00000 0.02200 Pb(1) 0.06560 0.33160 0.25000 0.48500 0.04400 Pb(2) 0.01760 0.37760 0.75000 0.29900 0.05000 O(1) 0.22850 0.12600 0.00690 1.00000 0.03400 O(2) 0.16810 0.34150 -0.03580 1.00000 0.02900 Wat(3) 0.00000 0.50000 0.00000 1.00000 0.04700 O(4) 0.06440 0.72800 -0.01420 1.00000 0.03700 O(5) 0.06730 0.11720 0.25000 1.00000 0.03000 O(6) 0.25740 0.25390 0.25000 1.00000 0.02800 O(7) 0.35430 0.03430 0.25000 1.00000 0.03600 O(8) 0.17530 0.49360 0.25000 1.00000 0.02600 O(9) 0.20440 0.70860 0.25000 1.00000 0.03200 O-H(10) 0.15140 0.90230 0.25000 1.00000 0.03500 O(11) 0.43210 0.63050 0.25000 1.00000 0.02800 O-H(12) 0.37510 0.43590 0.08120 1.00000 0.03200