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#$Date: 2010-06-10 18:11:07 +0300 (Thu, 10 Jun 2010) $
#$Revision: 1210 $
#$URL: file:///home/coder/svn-repositories/cod/cif/9/9001666.cif $
#------------------------------------------------------------------------------
#
# This file is available in the Crystallography Open Database (COD),
# http://www.crystallography.net/. The original data for this entry
# were provided the American Mineralogist Crystal Structure Database,
# http://rruff.geo.arizona.edu/AMS/amcsd.php
#
# The file may be used within the scientific community so long as
# proper attribution is given to the journal article from which the
# data were obtained.
#
data_9001666
loop_
_publ_author_name
'Artioli, G.'
'Rinaldi, R.'
'Wilson, C. C.'
'Zanazzi, P. F.'
_publ_section_title
;
 High-temperature Fe-Mg cation partitioning in olivine: In-situ single-crystal
 neutron diffraction study
 T = room temperature
 Atomic parameters obtained from the ICSD
;
_journal_name_full               'American Mineralogist'
_journal_page_first              197
_journal_page_last               200
_journal_volume                  80
_journal_year                    1995
_chemical_formula_sum            'Fe0.24 Mg1.76 O4 Si'
_chemical_name_mineral           Forsterite
_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                   4.740
_cell_length_b                   10.230
_cell_length_c                   5.960
_cell_volume                     289.002
_exptl_crystal_density_diffrn    3.408
_[local]_cod_chemical_formula_sum_orig '(Mg1.76 Fe.24) Si O4'
_cod_database_code               9001666
_amcsd_database_code             AMCSD#0001717
loop_
_symmetry_equiv_pos_as_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_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
Mg1 0.00530 0.00490 0.00580 -0.00120 -0.00040 -0.00050
Fe1 0.00530 0.00490 0.00580 -0.00120 -0.00040 -0.00050
Mg2 0.00730 0.00490 0.00600 0.00060 0.00000 0.00000
Fe2 0.00730 0.00490 0.00600 0.00060 0.00000 0.00000
Si 0.00390 0.00170 0.00390 0.00110 0.00000 0.00000
O1 0.00500 0.00720 0.00600 0.00070 0.00000 0.00000
O2 0.00690 0.00180 0.00710 0.00020 0.00000 0.00000
O3 0.00680 0.00580 0.00620 0.00020 0.00020 0.00100
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
Mg1 0.00000 0.00000 0.00000 0.87900
Fe1 0.00000 0.00000 0.00000 0.12100
Mg2 0.98970 0.27880 0.25000 0.88100
Fe2 0.98970 0.27880 0.25000 0.11900
Si 0.42750 0.09370 0.25000 1.00000
O1 0.76660 0.09090 0.25000 1.00000
O2 0.22070 0.44870 0.25000 1.00000
O3 0.27880 0.16370 0.03370 1.00000