data_global _chemical_name_mineral 'Fougerite' loop_ _publ_author_name 'Trolard F' 'Bourrie G' 'Abdelmoula M' 'Refait P' 'Feder F' _journal_name_full 'Clays and Clay Minerals' _journal_volume 55 _journal_year 2007 _journal_page_first 323 _journal_page_last 334 _publ_section_title ; Fougerite, a new mineral of the pyroaurite-iowaite group: Description and crystal structure ; _database_code_amcsd 0012240 _chemical_compound_source 'Synthetic' _chemical_formula_sum 'Fe O2.25 Cl.5 H2.75' _cell_length_a 3.190 _cell_length_b 3.190 _cell_length_c 23.85 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 120 _cell_volume 210.184 _exptl_crystal_density_diffrn 2.663 _symmetry_space_group_name_H-M 'R -3 m' loop_ _space_group_symop_operation_xyz 'x,y,z' '2/3+x,1/3+y,1/3+z' '1/3+x,2/3+y,2/3+z' 'x,x-y,z' '2/3+x,1/3+x-y,1/3+z' '1/3+x,2/3+x-y,2/3+z' 'y,x,-z' '2/3+y,1/3+x,1/3-z' '1/3+y,2/3+x,2/3-z' '-x+y,y,z' '2/3-x+y,1/3+y,1/3+z' '1/3-x+y,2/3+y,2/3+z' '-x,-x+y,-z' '2/3-x,1/3-x+y,1/3-z' '1/3-x,2/3-x+y,2/3-z' '-y,-x,z' '2/3-y,1/3-x,1/3+z' '1/3-y,2/3-x,2/3+z' 'x-y,-y,-z' '2/3+x-y,1/3-y,1/3-z' '1/3+x-y,2/3-y,2/3-z' 'y,-x+y,-z' '2/3+y,1/3-x+y,1/3-z' '1/3+y,2/3-x+y,2/3-z' '-x+y,-x,z' '2/3-x+y,1/3-x,1/3+z' '1/3-x+y,2/3-x,2/3+z' '-x,-y,-z' '2/3-x,1/3-y,1/3-z' '1/3-x,2/3-y,2/3-z' '-y,x-y,z' '2/3-y,1/3+x-y,1/3+z' '1/3-y,2/3+x-y,2/3+z' 'x-y,x,-z' '2/3+x-y,1/3+x,1/3-z' '1/3+x-y,2/3+x,2/3-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_occupancy Fe 0.00000 0.00000 0.00000 1.00000 O-H 0.00000 0.00000 0.37500 0.87500 Wat 0.10000 0.10000 0.50000 0.08333 Cl 0.25000 0.25000 0.50000 0.08333 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 Fe 0.00900 0.00900 0.02500 0.00450 0.00000 0.00000 O-H 0.01400 0.01400 0.06000 0.00700 0.00000 0.00000 Wat 0.15000 0.15000 0.08000 0.10000 -0.02000 0.02000 Cl 0.30000 0.30000 0.08000 0.10000 -0.02000 0.02000