data_global _chemical_name_mineral 'Melanterite' loop_ _publ_author_name 'Peterson R C' _journal_name_full 'The Canadian Mineralogist' _journal_volume 41 _journal_year 2003 _journal_page_first 937 _journal_page_last 949 _publ_section_title ; The relatinship between Cu content and distortion in the atomic structure of melanterite from the Richmond mine, Iron Mountain, California Sample: mati-7 ; _database_code_amcsd 0005875 _chemical_compound_source 'Richmond mine, Iron Mountain, California' _chemical_formula_sum 'Fe.706 Zn.612 Cu.682 S2 O22 H28' _cell_length_a 14.100 _cell_length_b 6.518 _cell_length_c 10.886 _cell_angle_alpha 90 _cell_angle_beta 105.76 _cell_angle_gamma 90 _cell_volume 962.855 _exptl_crystal_density_diffrn 1.956 _symmetry_space_group_name_H-M 'P 1 21/c 1' loop_ _space_group_symop_operation_xyz 'x,y,z' 'x,1/2-y,1/2+z' '-x,1/2+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_occupancy _atom_site_U_iso_or_equiv Fe1 0.00000 0.00000 0.00000 0.70560 ? Zn1 0.00000 0.00000 0.00000 0.29440 ? Cu2 0.50000 0.00000 0.50000 0.68200 ? Zn2 0.50000 0.00000 0.50000 0.31800 ? S 0.77180 -0.03310 0.32510 1.00000 0.02924 O1 0.79790 -0.03320 0.46650 1.00000 0.03814 O2 0.85800 0.03880 0.28450 1.00000 0.04364 O3 0.68750 0.10500 0.27540 1.00000 0.04392 O4 0.74620 -0.24240 0.27493 1.00000 0.04234 Wat5 -0.11190 -0.11320 0.06980 1.00000 0.06470 Wat6 0.10080 -0.04480 0.18250 1.00000 0.04593 Wat7 -0.02830 0.29600 0.06920 1.00000 0.04360 Wat8 0.51860 -0.04890 0.32380 1.00000 0.04094 Wat9 0.43090 0.26830 0.44030 1.00000 0.04399 Wat10 0.34910 -0.15800 0.44070 1.00000 0.04607 Wat11 0.36760 0.00880 0.11480 1.00000 0.04363