data_global _chemical_name_mineral 'Hodgkinsonite' loop_ _publ_author_name 'Rentzeperis P J' _journal_name_full 'Zeitschrift fur Kristallographie' _journal_volume 119 _journal_year 1963 _journal_page_first 117 _journal_page_last 138 _publ_section_title ; The crystal structure of hodgkinsonite Zn2Mn[(OH)2|SiO4] Note: y(H2) corrected ; _database_code_amcsd 0010606 _chemical_compound_source 'Franklin, New Jersey' _chemical_formula_sum 'Zn2 Mn Si O6 H2' _cell_length_a 8.170 _cell_length_b 5.316 _cell_length_c 11.761 _cell_angle_alpha 90 _cell_angle_beta 95.25 _cell_angle_gamma 90 _cell_volume 508.658 _exptl_crystal_density_diffrn 4.072 _symmetry_space_group_name_H-M 'P 1 21/a 1' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+x,1/2-y,z' '1/2-x,1/2+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 Zn1 0.27320 0.06570 0.07880 0.01094 Zn2 0.60840 0.06230 0.24910 0.01122 Mn1 0.10630 0.24200 0.54820 0.00685 Si 0.06730 0.06660 0.82920 0.00174 O1 0.10670 0.08100 0.19110 0.00659 O2 0.16570 0.04050 0.71510 0.00507 O3 0.81930 0.07020 0.06600 0.00570 O4 0.53840 0.14410 0.86210 0.00329 O5 0.49020 0.08920 0.38360 0.00621 O6 0.84910 0.08820 0.55600 0.00709 H1 0.46600 0.26000 0.33300 0.03166 H2 0.84200 -0.08300 0.60000 0.03166