data_1011121 _chemical_name_systematic 'Copper arsenate(V) hydroxide' _chemical_name_mineral 'Olivenite' _chemical_compound_source 'from Cornwall, England' _chemical_formula_structural 'Cu2 (As O4) (O H)' _chemical_formula_sum 'H As Cu2 O5' _publ_section_title 'Die Struktur des Olivenites Cu2 O H As O4' _publ_author_name 'Heritsch, H' _journal_name_full ; Zeitschrift fuer Kristallographie, Kristallgeometrie, Kristallphysik, Kristallchemie (-144,1977) ; _journal_coden_ASTM ZEKGAX _journal_volume 99 _journal_year 1938 _journal_page_first 466 _journal_page_last 479 _cell_length_a 8.62 _cell_length_b 8.2 _cell_length_c 5.94 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 419.9 _cell_formula_units_Z 4 _exptl_crystal_density_meas 4.4 _symmetry_space_group_name_H-M 'P n n m' _symmetry_Int_Tables_number 58 _symmetry_cell_setting orthorhombic loop_ _symmetry_equiv_pos_as_xyz 'x,y,z' '-x,-y,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' '1/2-x,1/2+y,1/2+z' '1/2+x,1/2-y,1/2+z' loop_ _atom_type_symbol _atom_type_oxidation_number O2- -2.000 As5+ 5.000 Cu2+ 2.000 H1+ 1.000 loop_ _atom_site_label _atom_site_type_symbol _atom_site_symmetry_multiplicity _atom_site_Wyckoff_symbol _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_occupancy _atom_site_attached_hydrogens _atom_site_calc_flag O1 O2- 4 g 0.097 -0.119 0. 1. 1 d O2 O2- 4 g 0.105 -0.147 0.5 1. 0 d O3 O2- 4 g 0.114 0.375 0. 1. 0 d O4 O2- 8 h 0.236 0.139 0.25 1. 0 d As1 As5+ 4 g 0.244 0.264 0. 1. 0 d Cu1 Cu2+ 4 e 0. 0. 0.25 1. 0 d Cu2 Cu2+ 4 g -0.122 0.361 0. 1. 0 d H1 H1+ 8 h -1. -1. -1. 0.5 0 dum