data_9016406
_publ_section_title
;
 Rietveld studies of the aluminium-iron substitution in synthetic
 goethite
 _cod_database_code 1008768
;
_journal_name_full               'Materials Science Forum'
_journal_page_first              821
_journal_page_last               826
_journal_volume                  79
_journal_year                    1991
_chemical_formula_sum            'Fe O2'
_chemical_name_mineral           Goethite
_space_group_IT_number           62
_symmetry_space_group_name_Hall  '-P 2c 2ab'
_symmetry_space_group_name_H-M   'P b n m'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_length_a                   4.6048
_cell_length_b                   9.9595
_cell_length_c                   3.023
_cell_volume                     138.639
_database_code_amcsd             0016645
_exptl_crystal_density_diffrn    4.209
_cod_database_code               9016406
loop_
_space_group_symop_operation_xyz
x,y,z
x,y,1/2-z
-x,-y,1/2+z
1/2+x,1/2-y,1/2+z
1/2-x,1/2+y,1/2-z
1/2-x,1/2+y,z
1/2+x,1/2-y,-z
-x,-y,-z
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
Fe1 0.04770 0.85390 0.25000
O1 0.70800 0.19960 0.25000
O2 0.20400 0.05310 0.25000
