data_global _chemical_name_mineral 'Retgersite' loop_ _publ_author_name 'Beevers C A' 'Lipson H' _journal_name_full 'Zeitschrift fur Kristallographie' _journal_volume 83 _journal_year 1932 _journal_page_first 123 _journal_page_last 135 _publ_section_title ; The crystal structure of nickel sulphate hexahydrate NiSO4 * 6H2O ; _database_code_amcsd 0010508 _chemical_compound_source 'Synthetic' _chemical_formula_sum 'Ni S O10 H12' _cell_length_a 6.80 _cell_length_b 6.80 _cell_length_c 18.3 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 846.192 _exptl_crystal_density_diffrn 2.063 _symmetry_space_group_name_H-M 'P 41 21 2' loop_ _space_group_symop_operation_xyz 'x,y,z' 'y,x,-z' '1/2-y,1/2+x,1/4+z' '1/2-x,1/2+y,1/4-z' '-x,-y,1/2+z' '-y,-x,1/2-z' '1/2+y,1/2-x,3/4+z' '1/2+x,1/2-y,3/4-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z Ni 0.71000 0.71000 0.00000 S 0.21000 0.21000 0.00000 O1 0.12000 0.12000 0.06800 O2 0.43000 0.17000 0.00000 Wat1 0.67000 0.45000 0.05400 Wat2 0.97000 0.75000 0.05400 Wat3 0.56000 0.86000 0.07700