data_global _chemical_name_mineral 'Clinoclase' loop_ _publ_author_name 'Eby R K' 'Hawthorne F C' _journal_name_full 'Acta Crystallographica, Section C' _journal_volume 46 _journal_year 1990 _journal_page_first 2291 _journal_page_last 2294 _publ_section_title ; Clinoclase and the geometry of [5]-coordinate Cu2+ in minerals ; _database_code_amcsd 0010215 _chemical_formula_sum 'Cu3 As O7 H3' _cell_length_a 7.257 _cell_length_b 6.457 _cell_length_c 12.378 _cell_angle_alpha 90 _cell_angle_beta 99.51 _cell_angle_gamma 90 _cell_volume 572.043 _exptl_crystal_density_diffrn 4.419 _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 0.14000 0.32940 0.01770 Cu2 0.81530 0.38130 0.12740 0.01690 Cu3 0.38690 0.35310 0.41260 0.01830 As 0.30870 0.14990 0.17960 0.01420 O1 0.41490 0.07100 0.07380 0.01770 O2 0.83770 -0.15770 0.36520 0.01830 O3 0.17980 -0.05310 0.21300 0.01630 O4 0.47110 0.22050 0.28540 0.01940 O-H1 0.77990 0.20340 0.47800 0.02480 O-H2 0.80880 0.09430 0.17730 0.01740 O-H3 0.18080 0.16700 0.41060 0.02100