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 0000213 _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 _cell_angle_beta 97.0 _cell_angle_gamma 90 _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 0.00000 0.00000 0.00000 0.79000 Fe1 0.00000 0.00000 0.00000 0.16000 Al1 0.00000 0.00000 0.00000 0.05000 Mg2 0.00000 0.33300 0.00000 0.79000 Fe2 0.00000 0.33300 0.00000 0.16000 Al2 0.00000 0.33300 0.00000 0.05000 Mg3 0.00000 0.66700 0.00000 0.79000 Fe3 0.00000 0.66700 0.00000 0.16000 Al3 0.00000 0.66700 0.00000 0.05000 Si1 0.39300 0.00000 0.16000 0.68000 Al1 0.39300 0.00000 0.16000 0.32000 Si2 0.39300 0.33300 0.16000 0.68000 Al2 0.39300 0.33300 0.16000 0.32000 O1 0.35200 0.00000 0.06100 1.00000 O2 0.35200 0.33300 0.06100 1.00000 O3 0.35200 0.66700 0.06100 1.00000 O4 0.13600 0.46400 0.18900 1.00000 O5 0.13600 0.92900 0.18900 1.00000 O6 0.41200 0.16700 0.21800 1.00000 O-H 0.71500 0.33200 0.33000 1.00000 O 0.46500 0.29800 0.43200 1.00000 C0 0.60000 0.36600 0.39200 1.00000 C1 0.48000 0.50500 0.42200 1.00000 C2 0.59500 0.63300 0.38300 1.00000 C3 0.47500 0.76300 0.41300 1.00000 C4 0.59000 0.90000 0.37500 1.00000 C5 0.47000 0.03800 0.40500 1.00000 N 0.58500 0.16700 0.36700 1.00000