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: 91rs209c ; _database_code_amcsd 0005876 _chemical_compound_source 'Richmond mine, Iron Mountain, California' _chemical_formula_sum 'Fe.688 Zn1.232 Cu.079 S2 O22 H28' _cell_length_a 14.066 _cell_length_b 6.506 _cell_length_c 10.938 _cell_angle_alpha 90 _cell_angle_beta 105.58 _cell_angle_gamma 90 _cell_volume 964.194 _exptl_crystal_density_diffrn 1.958 _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 0.68840 ? Zn1 0.00000 0.00000 0.00000 0.31160 ? Cu2 0.50000 0.00000 0.50000 0.07940 ? Zn2 0.50000 0.00000 0.50000 0.92060 ? S 0.77270 -0.02840 0.32360 1.00000 0.02792 O1 0.79560 -0.02800 0.46500 1.00000 0.03756 O2 0.86050 0.04180 0.28550 1.00000 0.04304 O3 0.69000 0.11210 0.27200 1.00000 0.04204 O4 0.74640 -0.23860 0.27480 1.00000 0.04068 Wat5 -0.11120 -0.11860 0.07010 1.00000 0.06404 Wat6 0.09960 -0.04230 0.18030 1.00000 0.04430 Wat7 -0.02970 0.29330 0.06760 1.00000 0.04060 Wat8 0.51990 -0.04650 0.32100 1.00000 0.04003 Wat9 0.43190 0.28190 0.44160 1.00000 0.04287 Wat10 0.35460 -0.14250 0.44130 1.00000 0.04141 Wat11 0.36410 0.00520 0.11630 1.00000 0.04235