data_global _chemical_name_mineral 'Olivenite' loop_ _publ_author_name 'Burns P C' 'Hawthorne F C' _journal_name_full 'The Canadian Mineralogist' _journal_volume 33 _journal_year 1995 _journal_page_first 885 _journal_page_last 888 _publ_section_title ; Rietveld refinement of the crystal structure of olivenite: A twinned monoclinic structure ; _database_code_amcsd 0005461 _chemical_formula_sum 'As Cu2 O5' _cell_length_a 8.5894 _cell_length_b 8.2076 _cell_length_c 5.9286 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 417.957 _exptl_crystal_density_diffrn 4.482 _symmetry_space_group_name_H-M 'P n n m' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+x,1/2-y,1/2+z' '1/2-x,1/2+y,1/2-z' '1/2-x,1/2+y,1/2+z' '1/2+x,1/2-y,1/2-z' 'x,y,-z' '-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 As 0.25070 0.26240 0.00000 0.00646 Cu1 0.88050 0.36240 0.00000 0.01646 Cu2 0.00000 0.00000 0.25100 0.01178 O1 0.10600 0.40120 0.00000 0.01393 O2 0.41630 0.36540 0.00000 0.01393 O3 0.89920 0.11980 0.00000 0.01393 O4 0.23470 0.15110 0.77330 0.01393