data_global _chemical_name_mineral 'Mimetite' loop_ _publ_author_name 'Baikie T' 'Ferraris C' 'Klooster W T' 'Madhavi S' 'Pramana S S' 'Pring A' 'Schmidt G' 'White T J' _journal_name_full 'Acta Crystallographica, Section B' _journal_volume 64 _journal_year 2008 _journal_page_first 34 _journal_page_last 41 _publ_section_title ; Crystal chemistry of mimetite, Pb10(AsO4)6Cl1.48O0.26, and finnemanite, Pb10(AsO3)6Cl2 Note: T = 298 K ; _database_code_amcsd 0020315 _chemical_compound_source 'Synthetic' _chemical_formula_sum 'Pb5 As3 O12.13 Cl.74' _cell_length_a 10.2055 _cell_length_b 10.2055 _cell_length_c 7.4483 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 120 _cell_volume 671.825 _exptl_crystal_density_diffrn 7.321 _symmetry_space_group_name_H-M 'P 63/m' loop_ _space_group_symop_operation_xyz 'x,y,z' '-x+y,-x,1/2-z' 'x-y,x,1/2+z' 'y,-x+y,-z' '-y,x-y,z' 'x,y,1/2-z' '-x,-y,1/2+z' 'x-y,x,-z' '-x+y,-x,z' '-y,x-y,1/2-z' 'y,-x+y,1/2+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 0.33333 0.66667 0.00730 1.00000 0.01646 Pb2 0.24910 0.00270 0.25000 1.00000 0.01773 As1 0.40600 0.38220 0.25000 1.00000 0.01520 O1 0.32680 0.49320 0.25000 1.00000 0.02153 O2 0.59650 0.48510 0.21930 0.50000 0.02406 O3a 0.33060 0.24440 0.09170 0.50000 0.01520 O3b 0.38470 0.29530 0.05010 0.50000 0.02026 O4 0.00000 0.00000 0.25000 0.13000 0.03166 Cl1 0.00000 0.00000 0.00000 0.74000 0.01900