data_global _chemical_name_mineral 'Orthowalpurgite' loop_ _publ_author_name 'Krause W' 'Effenberger H' 'Brandstatter F' _journal_name_full 'European Journal of Mineralogy' _journal_volume 7 _journal_year 1995 _journal_page_first 1313 _journal_page_last 1324 _publ_section_title ; Orthowalpurgite, (UO2)Bi4O4(AsO4)2.2H2O, a new mineral from the Black Forest, Germany ; _database_code_amcsd 0006607 _chemical_compound_source 'Black Forest, Germany' _chemical_formula_sum 'U Bi4 As2 O16 H4' _cell_length_a 5.492 _cell_length_b 13.324 _cell_length_c 20.685 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 1513.633 _exptl_crystal_density_diffrn 6.511 _symmetry_space_group_name_H-M 'P b c m' loop_ _space_group_symop_operation_xyz 'x,y,z' 'x,1/2-y,1/2+z' '-x,1/2+y,1/2-z' '-x,1/2+y,z' 'x,1/2-y,-z' 'x,y,1/2-z' '-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_U_iso_or_equiv U 0.68500 -0.01500 0.25000 0.02000 Bi1 0.67540 0.10257 0.03039 0.01200 Bi2 0.21990 0.30468 0.07715 0.01200 As 0.20140 0.00330 0.12920 0.01400 Ou1 0.80400 -0.14700 0.25000 0.04500 Ou2 0.56000 0.12100 0.25000 0.03100 Oo1 0.39900 0.43400 0.03520 0.01500 Oo2 0.48400 0.25000 0.00000 0.01000 Oo3 0.00500 0.25000 0.00000 0.01800 Oa1 0.33500 0.11100 0.10090 0.01200 Oa2 0.39700 -0.06400 0.32500 0.02100 Oa3 0.10300 -0.07100 0.06720 0.01200 Oa4 -0.05300 0.03300 0.17080 0.01800 Wat 0.76200 0.24600 0.14590 0.03700 loop_ _atom_site_aniso_label _atom_site_aniso_U_11 _atom_site_aniso_U_22 _atom_site_aniso_U_33 _atom_site_aniso_U_12 _atom_site_aniso_U_13 _atom_site_aniso_U_23 U 0.01540 0.02660 0.01870 -0.00190 0.00000 0.00000 Bi1 0.00670 0.01200 0.01620 0.00000 -0.00150 -0.00010 Bi2 0.00910 0.01230 0.01410 -0.00110 0.00060 0.00000 As 0.01200 0.01600 0.01400 -0.00300 0.00100 0.00040