data_global _chemical_name_mineral 'Belendorffite' loop_ _publ_author_name 'Lindahl T' 'Westman S' _journal_name_full 'Acta Chemica Scandinavica' _journal_volume 23 _journal_year 1969 _journal_page_first 1181 _journal_page_last 1190 _publ_section_title ; The structure of the rhombohedral gamma brass like phase in the copper-mercury system ; _database_code_amcsd 0011912 _chemical_compound_source 'Synthetic' _chemical_formula_sum 'Cu7 Hg6' _cell_length_a 9.4024 _cell_length_b 9.4024 _cell_length_c 9.4024 _cell_angle_alpha 90.425 _cell_angle_beta 90.425 _cell_angle_gamma 90.425 _cell_volume 831.151 _exptl_crystal_density_diffrn 6.586 _symmetry_space_group_name_H-M 'R 3 m' loop_ _space_group_symop_operation_xyz 'x,y,z' 'x,z,y' 'z,x,y' 'y,x,z' 'y,z,x' 'z,y,x' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_U_iso_or_equiv CuIT1 0.09700 0.09700 0.09700 0.02533 CuIT3 -0.09700 -0.09700 0.09700 ? CuOT1 -0.16300 -0.16300 -0.16300 ? CuOT3 0.16300 0.16300 -0.16300 -0.02533 CuOH3 0.00500 0.00500 0.34500 -0.05066 CuCO3 0.29500 0.29500 0.06800 0.02533 HgOH3* -0.00300 -0.00300 -0.35200 0.01267 HgCO3* -0.30700 -0.30700 0.04000 0.01267 HgCO6 -0.06000 0.33700 -0.28400 0.01267