data_global _chemical_name_mineral 'Zeunerite' loop_ _publ_author_name 'Hennig C' 'Reck G' 'Reich T' 'Robberg A' 'Kraus W' 'Sieler J' _journal_name_full 'Zeitschrift fur Kristallographie' _journal_volume 218 _journal_year 2003 _journal_page_first 37 _journal_page_last 45 _publ_section_title ; EXAFS and XRD investigations of zeunerite and meta-zeunerite ; _database_code_amcsd 0011096 _chemical_compound_source 'Synthetic' _chemical_formula_sum 'Cu U2 As2 O24 H24' _cell_length_a 7.1751 _cell_length_b 7.1751 _cell_length_c 20.8728 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 1074.575 _exptl_crystal_density_diffrn 3.392 _symmetry_space_group_name_H-M 'I 4/m m m' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+x,1/2+y,1/2+z' '-y,-x,z' '1/2-y,1/2-x,1/2+z' 'y,x,-z' '1/2+y,1/2+x,1/2-z' 'y,-x,-z' '1/2+y,1/2-x,1/2-z' '-y,x,z' '1/2-y,1/2+x,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' 'x,y,-z' '1/2+x,1/2+y,1/2-z' '-x,-y,z' '1/2-x,1/2-y,1/2+z' 'y,x,z' '1/2+y,1/2+x,1/2+z' '-y,-x,-z' '1/2-y,1/2-x,1/2-z' '-y,x,-z' '1/2-y,1/2+x,1/2-z' 'y,-x,z' '1/2+y,1/2-x,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' '-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 _atom_site_U_iso_or_equiv Cu1 0.00000 0.00000 0.50000 0.85000 0.01500 Cu2 0.00000 0.00000 0.12100 0.07500 0.01500 U 0.00000 0.00000 0.29480 1.00000 0.01300 As 0.00000 0.50000 0.25000 1.00000 0.01700 O1 0.00000 0.00000 0.38250 1.00000 0.02900 O2 0.00000 0.00000 0.20990 1.00000 0.02600 O3 0.04070 0.31850 0.29830 0.50000 0.02500 Wat1 0.98400 0.73090 0.50000 0.50000 0.03500 Wat2 0.23540 0.58370 0.58680 0.50000 0.03200