#------------------------------------------------------------------------------ #$Date: 2009-05-13 21:45:18 +0300 (Wed, 13 May 2009) $ #$Revision: 720 $ #$URL: file:///home/coder/svn-repositories/cod/cif/1/1011087.cif $ #------------------------------------------------------------------------------ # # This file is available in the Crystallography Open Database (COD), # http://www.crystallography.net/ # # All data on this site have been placed in the public domain by the # contributors. # data_1011087 _chemical_name_systematic 'Iron(III) oxide hydroxide' _chemical_name_mineral 'Goethite' _chemical_compound_source 'from Restormel mine, Lanlivery, Cornwall' _chemical_formula_structural 'Fe O (O H)' _chemical_formula_sum 'H Fe O2' _publ_section_title ; Etude de quelques derives de l'oxyde ferrique (Fe O * O H, Fe O2 Na, Fe O Cl) determination de leurs structures. ; loop_ _publ_author_name 'Goldsztaub, M S' _journal_name_full ; Bulletin de la Societe Francaise de Mineralogie (-71,1948) ; _journal_coden_ASTM BSFMAU _journal_volume 58 _journal_year 1935 _journal_page_first 6 _journal_page_last 76 _cell_length_a 4.64 _cell_length_b 10. _cell_length_c 3.03 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 140.6 _cell_formula_units_Z 4 _exptl_crystal_density_meas 4.17 _symmetry_space_group_name_H-M 'P b n m' _symmetry_Int_Tables_number 62 _symmetry_cell_setting orthorhombic loop_ _symmetry_equiv_pos_as_xyz 'x,y,z' '1/2-x,1/2+y,1/2-z' '-x,-y,1/2+z' '1/2+x,1/2-y,-z' '-x,-y,-z' '1/2+x,1/2-y,1/2+z' 'x,y,1/2-z' '1/2-x,1/2+y,z' loop_ _atom_type_symbol _atom_type_oxidation_number O2- -2.000 Fe3+ 3.000 H1+ 1.000 loop_ _atom_site_label _atom_site_type_symbol _atom_site_symmetry_multiplicity _atom_site_Wyckoff_symbol _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_occupancy _atom_site_attached_hydrogens _atom_site_calc_flag O1 O2- 4 c 0.25 0.2917 0.25 1. 0 d O2 O2- 4 c 0.75 0.4583 0.25 1. 1 d Fe1 Fe3+ 4 c 0.53 0.65 0.25 1. 0 d H1 H1+ 4 c -1. -1. -1. 1. 0 dum