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 136 _chemical_formula_sum 'Fe1.71 Mg.645 Al1.305 Si1.34 O9 H4' _cell_length_a 5.39 _cell_length_b 9.336 _cell_length_c 14.166 _cell_angle_alpha 90.0 _cell_angle_beta 90.0 _cell_angle_gamma 90.0 _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 0.0 0.0 0.0 0.67 2.0 Mg1 0.0 0.0 0.0 0.165 2.0 Al1 0.0 0.0 0.0 0.165 2.0 Fe2 0.0 0.333333 0.0 0.67 2.0 Mg2 0.0 0.333333 0.0 0.165 2.0 Al2 0.0 0.333333 0.0 0.165 2.0 Fe3 0.0 0.0 0.5 0.47 2.0 Mg3 0.0 0.0 0.5 0.265 2.0 Al3 0.0 0.0 0.5 0.265 2.0 Fe4 0.0 0.333333 0.5 0.47 2.0 Mg4 0.0 0.333333 0.5 0.265 2.0 Al4 0.0 0.333333 0.5 0.265 2.0 Si 0.3328 0.333333 0.1949 0.67 0.01798 Al 0.3328 0.333333 0.1949 0.33 0.01798 O1 0.3349 0.333333 0.077 1.0 0.02394 O-H1 0.3349 0.0 0.077 1.0 0.02394 O2 0.094 0.236 0.236 1.0 0.02698 O3 0.31 0.5 0.236 1.0 0.01912 O-H2 0.1656 0.16667 0.4303 1.0 0.03268 O-H3 0.1656 0.5 0.4303 1.0 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 -0.0051 -0.00309 0.00134 Mg1 0.01089 0.01545 0.02948 -0.0051 -0.00309 0.00134 Al1 0.01089 0.01545 0.02948 -0.0051 -0.00309 0.00134 Fe2 0.01089 0.01545 0.02948 -0.0051 -0.00309 0.00134 Mg2 0.01089 0.01545 0.02948 -0.0051 -0.00309 0.00134 Al2 0.01089 0.01545 0.02948 -0.0051 -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