data_global _chemical_name_mineral 'Hexahydroborite' loop_ _publ_author_name 'Sedlacek P' 'Dornberger-Schiff K' _journal_name_full 'Acta Crystallographica, Section B' _journal_volume 27 _journal_year 1971 _journal_page_first 1532 _journal_page_last 1541 _publ_section_title ; An OD-Disordered modification of the calcium monoborate dihydrate Ca[B(OH)4]2*2H2O Sample: MDO (1) ; _database_code_amcsd 0009397 _chemical_compound_source 'Synthetic' _chemical_formula_sum 'Ca B2 (O10 H12)' _cell_length_a 16.07999 _cell_length_b 6.69 _cell_length_c 7.95 _cell_angle_alpha 90 _cell_angle_beta 104.9 _cell_angle_gamma 90 _cell_volume 826.466 _exptl_crystal_density_diffrn 1.879 _symmetry_space_group_name_H-M 'C 1 2/c 1' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+x,1/2+y,z' 'x,-y,1/2+z' '1/2+x,1/2-y,1/2+z' '-x,y,1/2-z' '1/2-x,1/2+y,1/2-z' '-x,-y,-z' '1/2-x,1/2-y,-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z Ca 0.00000 -0.02900 0.25000 B 0.09100 0.27100 0.06500 O-H1 -0.00300 0.22100 0.03300 O-H2 0.13300 0.12800 0.20200 O-H3 0.11300 0.24600 -0.09900 O-H4 0.10900 0.47700 0.12400 Wat5 0.21300 0.21000 0.55300