data_global _chemical_name_mineral 'Greenalite' loop_ _publ_author_name 'Shirozu H' 'Bailey S W' _journal_name_full 'American Mineralogist' _journal_volume 50 _journal_year 1965 _journal_page_first 868 _journal_page_last 885 _publ_section_title ; Chlorite polytypism: III. Crystal structure of an orthohexagonal iron chlorite ; _database_code_amcsd 0000136 _chemical_formula_sum 'Fe1.71 Mg.645 Al1.305 Si1.34 O9 H4' _cell_length_a 5.390 _cell_length_b 9.336 _cell_length_c 14.166 _cell_angle_alpha 90 _cell_angle_beta 90.0 _cell_angle_gamma 90 _cell_volume 712.848 _exptl_crystal_density_diffrn 3.094 _symmetry_space_group_name_H-M 'C 1 2/m 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' '-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 _atom_site_U_iso_or_equiv Fe1 0.00000 0.00000 0.00000 0.67000 ? Mg1 0.00000 0.00000 0.00000 0.16500 ? Al1 0.00000 0.00000 0.00000 0.16500 ? Fe2 0.00000 0.33333 0.00000 0.67000 ? Mg2 0.00000 0.33333 0.00000 0.16500 ? Al2 0.00000 0.33333 0.00000 0.16500 ? Fe3 0.00000 0.00000 0.50000 0.47000 ? Mg3 0.00000 0.00000 0.50000 0.26500 ? Al3 0.00000 0.00000 0.50000 0.26500 ? Fe4 0.00000 0.33333 0.50000 0.47000 ? Mg4 0.00000 0.33333 0.50000 0.26500 ? Al4 0.00000 0.33333 0.50000 0.26500 ? Si 0.33280 0.33333 0.19490 0.67000 0.01798 Al 0.33280 0.33333 0.19490 0.33000 0.01798 O1 0.33490 0.33333 0.07700 1.00000 0.02394 O-H1 0.33490 0.00000 0.07700 1.00000 0.02394 O2 0.09400 0.23600 0.23600 1.00000 0.02698 O3 0.31000 0.50000 0.23600 1.00000 0.01912 O-H2 0.16560 0.16667 0.43030 1.00000 0.03268 O-H3 0.16560 0.50000 0.43030 1.00000 0.03268 loop_ _atom_site_aniso_label _atom_site_aniso_U_11 _atom_site_aniso_U_22 _atom_site_aniso_U_33 _atom_site_aniso_U_12 _atom_site_aniso_U_13 _atom_site_aniso_U_23 Fe1 0.01089 0.01545 0.02948 -0.00510 -0.00309 0.00134 Mg1 0.01089 0.01545 0.02948 -0.00510 -0.00309 0.00134 Al1 0.01089 0.01545 0.02948 -0.00510 -0.00309 0.00134 Fe2 0.01089 0.01545 0.02948 -0.00510 -0.00309 0.00134 Mg2 0.01089 0.01545 0.02948 -0.00510 -0.00309 0.00134 Al2 0.01089 0.01545 0.02948 -0.00510 -0.00309 0.00134 Fe3 0.01207 0.01192 0.02948 -0.00459 -0.00387 -0.00067 Mg3 0.01207 0.01192 0.02948 -0.00459 -0.00387 -0.00067 Al3 0.01207 0.01192 0.02948 -0.00459 -0.00387 -0.00067 Fe4 0.01207 0.01192 0.02948 -0.00459 -0.00387 -0.00067 Mg4 0.01207 0.01192 0.02948 -0.00459 -0.00387 -0.00067 Al4 0.01207 0.01192 0.02948 -0.00459 -0.00387 -0.00067