data_9000781 _chemical_name 'Klebelsbergite' loop_ _publ_author_name 'Manchetti S' 'Sabelli C' _journal_name_full "American Mineralogist" _journal_volume 65 _journal_year 1980 _journal_page_first 931 _journal_page_last 935 _publ_section_title ; The crystal structure of klebelsbergite Sb4O4(OH)2SO4 ; _chemical_formula_sum 'Sb4 S O10 H2' _cell_length_a 5.766 _cell_length_b 11.274 _cell_length_c 14.887 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 967.743 _symmetry_space_group_name_H-M 'P c a 21' loop_ _symmetry_equiv_pos_as_xyz 'x,y,z' '1/2+x,-y,z' '1/2-x,y,1/2+z' '-x,-y,1/2+z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_Uiso_or_equiv Sb1 0.47890 0.35960 0.25000 ? Sb2 0.39170 0.08740 0.09140 ? Sb3 0.15260 0.40780 0.43220 ? Sb4 0.04830 0.14120 0.26730 ? S 0.67800 0.25950 0.50830 ? O1 0.85250 0.25050 0.43120 ? O2 0.64000 0.38770 0.52850 ? O3 0.46270 0.20260 0.48490 ? O4 0.77420 0.20150 0.58990 ? O5 0.28560 0.46270 0.18230 ? O6 0.30770 0.20260 0.18210 ? O7 0.42380 0.49190 0.36570 ? O8 0.11780 0.00690 0.16420 ? O9 0.27230 0.05150 0.34130 ? O10 0.19940 0.30880 0.32130 ? H1 0.30100 0.51300 0.12900 0.05066 H2 0.33700 0.10100 0.38900 0.05066