data_global _chemical_name_mineral 'Clinoclase' loop_ _publ_author_name 'Ghose S' 'Fehlmann M' 'Sundaralingam M' _journal_name_full 'Acta Crystallographica' _journal_volume 18 _journal_year 1965 _journal_page_first 777 _journal_page_last 787 _publ_section_title ; The crystal structure of clinoclase, Cu3AsO4(OH)3 ; _database_code_amcsd 0009293 _chemical_compound_source 'Majuba Hill, Nevada, USA' _chemical_formula_sum 'Cu3 As O7 H3' _cell_length_a 7.24 _cell_length_b 6.46 _cell_length_c 12.38 _cell_angle_alpha 90 _cell_angle_beta 99.5 _cell_angle_gamma 90 _cell_volume 571.077 _exptl_crystal_density_diffrn 4.426 _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_U_iso_or_equiv Cu1 0.78770 0.13890 0.32910 0.01241 Cu2 0.81500 0.38240 0.12750 0.01077 Cu3 0.38720 0.35320 0.41270 0.01127 As 0.30880 0.15100 0.17960 0.00304 O1 0.41210 0.06670 0.07240 0.00253 O2 0.16230 0.34530 0.13460 0.00912 O3 0.17580 -0.05680 0.21410 0.00519 O4 0.47280 0.21730 0.28610 0.00253 O-H1 0.77970 0.20260 0.47910 0.00329 O-H2 0.19110 0.59790 0.32090 0.00608 O-H3 0.17800 0.17360 0.40800 0.00595