data_global _chemical_name_mineral 'Geigerite' loop_ _publ_author_name 'Graeser S' 'Schwander H' 'Bianchi R' 'Pilati T' 'Gramaccioli C M' _journal_name_full 'American Mineralogist' _journal_volume 74 _journal_year 1989 _journal_page_first 676 _journal_page_last 684 _publ_section_title ; Geigerite, the Mn analogue of chudobaite: Its description and crystal structure ; _database_code_amcsd 0001248 _chemical_formula_sum 'As4 Mn5 O26 H22' _cell_length_a 7.944 _cell_length_b 10.691 _cell_length_c 6.770 _cell_angle_alpha 80.97 _cell_angle_beta 84.20 _cell_angle_gamma 81.85 _cell_volume 560.281 _exptl_crystal_density_diffrn 3.001 _symmetry_space_group_name_H-M 'P -1' loop_ _space_group_symop_operation_xyz 'x,y,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 As1 0.36967 0.36543 0.40344 ? As2 -0.03902 0.33350 -0.07716 ? Mn1 0.00000 0.00000 0.00000 ? Mn2 0.08271 0.59557 0.59920 ? Mn3 0.36170 0.43412 -0.10853 ? O1 0.18600 0.30510 0.35710 ? O2 0.50370 0.23720 0.48640 ? O3 0.43830 0.44250 0.18210 ? O4 0.31520 0.46180 0.57760 ? O5 -0.11730 0.19690 -0.09000 ? O6 -0.04800 0.42680 -0.30160 ? O7 0.16770 0.31020 -0.01900 ? O8 -0.15250 0.40940 0.10350 ? O9 0.15790 0.78510 0.51520 ? O10 0.53240 0.24780 -0.11980 ? O11 0.08630 0.04360 0.27510 ? O12 0.23210 0.06200 -0.16160 ? O13 0.55420 -0.06470 -0.24280 ? H1 0.17900 0.31000 0.21100 0.09000 H91 0.27000 0.77800 0.54300 0.07000 H92 0.12500 0.80500 0.37500 0.10000 H101 0.52700 0.22700 -0.23400 0.10000 H102 0.63600 0.23000 -0.11100 0.05000 H111 0.03200 0.07400 0.37100 0.05000 H112 0.18600 0.05600 0.27400 0.05000 H121 0.33300 0.03300 -0.19100 0.11000 H122 0.24100 0.13700 -0.14600 0.05000 H131 0.52800 -0.10400 -0.32000 0.07000 H132 0.55400 -0.13800 -0.12700 0.33000 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 As1 0.00850 0.00980 0.00760 -0.00150 -0.00040 -0.00110 As2 0.00720 0.00610 0.00730 -0.00080 -0.00070 -0.00080 Mn1 0.01500 0.00930 0.01760 -0.00060 -0.00210 -0.00110 Mn2 0.01060 0.01020 0.00940 -0.00110 -0.00070 -0.00180 Mn3 0.00950 0.01170 0.00900 -0.00180 -0.00100 -0.00140 O1 0.00900 0.01700 0.01600 -0.00300 -0.00300 -0.00200 O2 0.01300 0.01200 0.01900 0.00300 -0.00600 0.00100 O3 0.01300 0.01600 0.00800 -0.00600 0.00000 0.00200 O4 0.01200 0.01300 0.00900 -0.00100 -0.00200 -0.00300 O5 0.01200 0.00700 0.02100 -0.00400 -0.00300 -0.00100 O6 0.01500 0.01000 0.00700 -0.00400 -0.00400 0.00100 O7 0.00800 0.01200 0.01300 -0.00200 -0.00400 0.00100 O8 0.01100 0.01200 0.01100 0.00200 0.00100 -0.00300 O9 0.01500 0.02000 0.02000 -0.00400 -0.00200 0.00100 O10 0.01400 0.01900 0.02100 0.00100 -0.00200 -0.00500 O11 0.03200 0.02600 0.02600 -0.00800 -0.00400 -0.00900 O12 0.02400 0.02000 0.06100 -0.00600 0.01700 -0.00800 O13 0.03200 0.04100 0.06700 0.00400 -0.01200 -0.03300