data_global _chemical_name_mineral 'Protasite' loop_ _publ_author_name 'Pagoaga M K' 'Appleman D E' 'Stewart J M' _journal_name_full 'American Mineralogist' _journal_volume 72 _journal_year 1987 _journal_page_first 1230 _journal_page_last 1238 _publ_section_title ; Crystal structures and crystal chemistry of the uranyl oxide hydrates becquerelite, billietite, and protasite ; _database_code_amcsd 0001134 _chemical_compound_source 'Shinkolobwe mine, Shaba, Zaire' _chemical_formula_sum 'U3 Ba O14' _cell_length_a 12.2949 _cell_length_b 7.2206 _cell_length_c 6.9558 _cell_angle_alpha 90 _cell_angle_beta 90.401 _cell_angle_gamma 90 _cell_volume 617.497 _exptl_crystal_density_diffrn 5.784 _symmetry_space_group_name_H-M 'P 1 n 1' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+x,-y,1/2+z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_U_iso_or_equiv U1 0.00000 -0.02314 0.00000 ? U2 0.81983 -0.01959 0.45837 ? U3 0.11859 -0.01512 0.52145 ? Ba 0.97749 0.51175 0.32850 ? O101u 0.01700 -0.27800 -0.02700 0.01200 O102u 0.98970 0.23100 0.05600 0.01200 O201u 0.80960 -0.26700 0.50400 0.01200 O202u 0.84180 0.22400 0.39900 0.01200 O301u 0.13370 -0.26400 0.55800 0.01200 O302u 0.10340 0.23300 0.46200 0.01200 O1o 0.97940 -0.09200 0.31800 0.00800 O2o 0.95400 0.00500 -0.30800 0.00800 O3h 0.80860 -0.07400 0.07200 0.01100 O4h 0.19380 -0.07200 0.20300 0.01100 O5o 0.15050 0.02500 -0.16300 0.00800 O6w 0.18700 0.54500 0.15600 0.04000 O7w 0.80200 0.53400 0.06200 0.04000 O8w 0.93400 0.44200 0.72200 0.04000 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 U1 0.00560 0.00600 0.00010 -0.00020 0.00060 0.00020 U2 0.00270 0.00590 0.00260 -0.00050 -0.00020 0.00190 U3 0.00320 0.00570 0.00080 -0.00040 -0.00130 -0.00010 Ba 0.01300 0.00620 0.00880 0.00100 -0.00070 0.00090