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#$Date: 2013-05-05 17:21:46 +0300 (Sun, 05 May 2013) $
#$Revision: 85285 $
#$URL: file:///home/coder/svn-repositories/cod/cif/9/00/97/9009760.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_9009760
loop_
_publ_author_name
'Chakoumakos, B. C.'
'Fernandez-Baca J A'
'Boatner, L. A.'
_publ_section_title
;
 Refinement of the structures of the layer silicates MCuSi4O10 (M=Ca,Sr,Ba)
 by Rietveld analysis of neutron powder diffraction data
 Note: gillespite structure
 Locality: synthetic
;
_journal_name_full               'Journal of Solid State Chemistry'
_journal_page_first              105
_journal_page_last               113
_journal_volume                  103
_journal_year                    1993
_chemical_formula_sum            'Cu O10 Si4 Sr'
_chemical_name_mineral           Wesselsite
_space_group_IT_number           130
_symmetry_space_group_name_Hall  '-P 4a 2ac'
_symmetry_space_group_name_H-M   'P 4/n c c :2'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_length_a                   7.3707
_cell_length_b                   7.3707
_cell_length_c                   15.5904
_cell_volume                     846.983
_exptl_crystal_density_diffrn    3.321
_[local]_cod_cif_authors_sg_H-M  'P 4/n c c'
_[local]_cod_chemical_formula_sum_orig 'Sr Cu Si4 O10'
_cod_database_code               9009760
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
1/2-y,1/2-x,1/2+z
1/2+y,1/2+x,1/2-z
1/2+y,-x,-z
1/2-y,x,z
x,1/2-y,1/2+z
-x,1/2+y,1/2-z
1/2+x,1/2+y,-z
1/2-x,1/2-y,z
y,x,1/2+z
-y,-x,1/2-z
-y,1/2+x,-z
y,1/2-x,z
1/2-x,y,1/2+z
1/2+x,-y,1/2-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
Sr 0.00700 0.00700 0.01100 0.00000 0.00000 0.00000
Cu 0.00450 0.00450 0.01000 0.00000 0.00000 0.00000
Si 0.00300 0.00400 0.01200 0.00000 0.00300 0.00000
O1 0.02700 0.02700 0.00600 -0.00400 0.01100 -0.01100
O2 0.00250 0.01300 0.01700 -0.00290 0.00110 0.00540
O3 0.00780 0.00430 0.02500 0.00230 -0.00800 -0.00300
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
Sr 0.25000 0.75000 0.00000 0.00900
Cu 0.25000 0.25000 0.08830 0.00600
Si 0.50880 0.93080 0.15110 0.00600
O1 0.46640 0.96640 0.25000 0.02000
O2 0.71370 0.00080 0.13110 0.01100
O3 0.36670 0.01690 0.08650 0.01200