data_global _chemical_name_mineral 'Hogbomite' loop_ _publ_author_name 'Hejny C' 'Armbruster T' _journal_name_full 'American Mineralogist' _journal_volume 87 _journal_year 2002 _journal_page_first 277 _journal_page_last 292 _publ_section_title ; Polysomatism in hogbomite: The crystal structures of 10T, 12H, 14T and 24R polysomes Note: Data represents a model, not experiment. Sample: polytype 14T ; _database_code_amcsd 0002756 _chemical_formula_sum 'Al14 Mg5 Ti O28 H' _cell_length_a 5.7 _cell_length_b 5.7 _cell_length_c 32.2 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 120 _cell_volume 906.017 _exptl_crystal_density_diffrn 3.651 _symmetry_space_group_name_H-M 'P -3 m 1' loop_ _space_group_symop_operation_xyz 'x,y,z' '-y,-x,z' 'y,-x+y,-z' '-x,-x+y,-z' '-x+y,-x,z' '-x+y,y,z' '-x,-y,-z' 'y,x,-z' '-y,x-y,z' 'x,x-y,z' 'x-y,x,-z' 'x-y,-y,-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z Al1 0.00000 0.00000 0.00000 Mg2 0.66667 0.33333 0.01786 Al3 0.66667 0.83333 0.07143 Mg4 0.66667 0.33333 0.12500 Al5 0.33333 0.66667 0.14286 Mg6 0.00000 0.00000 0.16071 Al7 0.50000 0.00000 0.21429 Ti8 0.00000 0.00000 0.28571 Al9 0.33333 0.66667 0.30357 Al10 0.83333 0.66667 0.35714 Mg11 0.33333 0.66667 0.41071 Al12 0.66667 0.33333 0.42857 Mg13 0.00000 0.00000 0.44643 Al14 1.00000 0.50000 0.50000 O1 0.33333 0.16667 0.03571 O2 0.33333 0.66667 0.03571 O3 0.50000 0.00000 0.10714 O4 0.00000 0.00000 0.10714 O5 0.66667 0.83333 0.17857 O6 0.66667 0.33333 0.17857 O7 0.83333 0.66667 0.25000 O8 0.33333 0.66667 0.25000 O9 0.66667 0.83333 0.32143 O10 0.66667 0.33333 0.32143 O11 0.50000 0.00000 0.39286 O12 0.00000 0.00000 0.39286 O13 0.33333 0.16667 0.46429 O14 0.33333 0.66667 0.46429 H 0.66667 0.33333 0.29000