#------------------------------------------------------------------------------
#$Date: 2016-02-13 21:28:24 +0200 (Sat, 13 Feb 2016) $
#$Revision: 176429 $
#$URL: svn://www.crystallography.net/cod/cif/1/54/12/1541262.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_1541262
loop_
_publ_author_name
'Motoyama, T.'
'Matsumoto, T.'
_publ_section_title
;
 The crystal structures and the cation distributions of Mg and Fe of
 natural olivines
;
_journal_name_full               'Mineralogical Journal (Japan)'
_journal_page_first              338
_journal_page_last               350
_journal_volume                  14
_journal_year                    1989
_chemical_formula_sum            'Fe1.74 Mg0.26 O4 Si'
_chemical_name_systematic        '(Mg.26 Fe1.74) (Si O4)'
_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_formula_units_Z            4
_cell_length_a                   4.8129
_cell_length_b                   10.4471
_cell_length_c                   6.078
_cell_volume                     305.607
_citation_journal_id_ASTM        MJTOAS
_cod_data_source_file            Motoyama_MJTOAS_1989_1429.cif
_cod_data_source_block           Fe1.74Mg0.26O4Si1
_cod_original_sg_symbol_Hall     '-P 2ac 2n (z,x,y)'
_cod_original_formula_sum        'Fe1.74 Mg0.26 O4 Si1'
_cod_database_code               1541262
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
x+1/2,-y+1/2,-z
-x+1/2,y+1/2,-z+1/2
-x,-y,z+1/2
-x,-y,-z
-x-1/2,y-1/2,z
x-1/2,-y-1/2,z-1/2
x,y,-z-1/2
loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_U_iso_or_equiv
Si1 Si+4 0.4302 0.0969 0.25 1 0.0
O2 O-2 0.2111 0.4523 0.25 1 0.0
Fe1 Fe+2 0 0 0 0.878 0.0
O3 O-2 0.2866 0.165 0.0363 1 0.0
Mg1 Mg+2 0 0 0 0.122 0.0
O1 O-2 0.7666 0.092 0.25 1 0.0
Fe2 Fe+2 0.9865 0.2798 0.25 0.86 0.0
Mg2 Mg+2 0.9865 0.2798 0.25 0.14 0.0
