data_global _chemical_name_mineral 'Warikahnite' loop_ _publ_author_name 'Riffel H' 'Keller P' 'Hess H' _journal_name_full 'Tschermaks Mineralogische und Petrographische Mitteilungen' _journal_volume 27 _journal_year 1980 _journal_page_first 187 _journal_page_last 199 _publ_section_title ; Die kristallstruktur von warikahnit, Zn3[(H2O)2|(AsO4)2] ; _database_code_amcsd 0015678 _chemical_compound_source 'Tsumeb mine, Namibia' _chemical_formula_sum 'Zn3 As2 O10 H4' _cell_length_a 6.710 _cell_length_b 8.989 _cell_length_c 14.533 _cell_angle_alpha 105.59 _cell_angle_beta 93.44 _cell_angle_gamma 108.68 _cell_volume 789.532 _exptl_crystal_density_diffrn 4.291 _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 Zn1 0.39500 0.56280 0.58940 0.00975 Zn2 0.38260 0.55130 0.08640 0.00937 Zn3 0.01800 0.70920 0.38750 0.00925 Zn4 0.24270 0.86010 0.08310 0.00937 Zn5 0.06330 0.06030 0.73820 0.00963 Zn6 0.00520 0.22470 0.14620 0.01013 As1 0.05290 0.33450 0.39090 0.00659 As2 0.48530 0.27760 0.67550 0.00747 As3 0.09900 0.43590 0.86310 0.00646 As4 0.26040 0.13600 0.96680 0.00684 O1 0.31060 0.44770 0.43700 0.01039 O2 0.31230 0.32370 0.60790 0.00950 O3 0.08260 0.53930 0.61500 0.01191 Wat4 0.47450 0.80650 0.57250 0.01532 Wat5 0.47250 0.67450 0.74270 0.01431 O6 0.31580 0.44960 0.93600 0.01229 O7 0.11910 0.62750 0.08460 0.00874 O8 0.39030 0.55790 0.22490 0.01203 O9 0.33670 0.76950 0.39290 0.01254 O10 0.05340 0.78480 0.54000 0.01127 O11 0.06290 0.29430 0.75480 0.01191 Wat12 0.35370 0.99930 0.22140 0.01710 O13 0.04710 0.08910 0.88020 0.01102 O14 0.22900 0.94370 0.97210 0.01140 O15 0.49320 0.20830 0.93030 0.01001 O16 0.35830 0.10580 0.70660 0.01368 Wat17 0.09890 0.98310 0.39920 0.01178 O18 0.02750 0.19920 0.27780 0.01115 O19 0.24310 0.26380 0.07310 0.01305 O20 0.13810 0.61800 0.84490 0.01279