data_global _chemical_name_mineral 'Vermiculite' loop_ _publ_author_name 'Kanamaru F' 'Vand V' _journal_name_full 'American Mineralogist' _journal_volume 55 _journal_year 1970 _journal_page_first 1550 _journal_page_last 1561 _publ_section_title ; The crystal structure of a clay-organic complex of 6-amino hexanoic acid and vermiculite ; _database_code_amcsd 213 _chemical_formula_sum 'Mg2.37 Fe.48 Al1.43 Si2.72 O16 C12 N2 H2' _cell_length_a 5.33 _cell_length_b 9.18 _cell_length_c 17.45 _cell_angle_alpha 90.0 _cell_angle_beta 97.0 _cell_angle_gamma 90.0 _cell_volume 847.454 _exptl_crystal_density_diffrn 2.467 _symmetry_space_group_name_H-M 'C 1 2 1' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+x,1/2+y,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 _atom_site_occupancy Mg1 0.0 0.0 0.0 0.79 Fe1 0.0 0.0 0.0 0.16 Al1 0.0 0.0 0.0 0.05 Mg2 0.0 0.333 0.0 0.79 Fe2 0.0 0.333 0.0 0.16 Al2 0.0 0.333 0.0 0.05 Mg3 0.0 0.667 0.0 0.79 Fe3 0.0 0.667 0.0 0.16 Al3 0.0 0.667 0.0 0.05 Si1 0.393 0.0 0.16 0.68 Al1 0.393 0.0 0.16 0.32 Si2 0.393 0.333 0.16 0.68 Al2 0.393 0.333 0.16 0.32 O1 0.352 0.0 0.061 1.0 O2 0.352 0.333 0.061 1.0 O3 0.352 0.667 0.061 1.0 O4 0.136 0.464 0.189 1.0 O5 0.136 0.929 0.189 1.0 O6 0.412 0.167 0.218 1.0 O-H 0.715 0.332 0.33 1.0 O 0.465 0.298 0.432 1.0 C0 0.6 0.366 0.392 1.0 C1 0.48 0.505 0.422 1.0 C2 0.595 0.633 0.383 1.0 C3 0.475 0.763 0.413 1.0 C4 0.59 0.9 0.375 1.0 C5 0.47 0.038 0.405 1.0 N 0.585 0.167 0.367 1.0