#------------------------------------------------------------------------------
#$Date: 2016-02-11 00:03:02 +0000 (Thu, 11 Feb 2016) $
#$Revision: 176343 $
#$URL: svn://www.crystallography.net/cod/cif/2/30/01/2300189.cif $
#------------------------------------------------------------------------------
#
# This file is available in the Crystallography Open Database (COD),
# http://www.crystallography.net/. The original data for this entry
# were provided by IUCr Journals, http://journals.iucr.org/.
#
# 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_2300189
loop_
_publ_author_name
'Gualtieri, Alessandro F.'
'Ferrari, Simone'
'Leoni, Matteo'
'Grathoff, Georg'
'Hugo, Richard'
'Shatnawi, Mouath'
'Paglia, Gianluca'
'Billinge, Simon'
_publ_section_title
;
 Structural characterization of the clay mineral illite-1M
;
_journal_issue                   2
_journal_name_full               'Journal of Applied Crystallography'
_journal_page_first              402
_journal_page_last               415
_journal_paper_doi               10.1107/S0021889808004202
_journal_volume                  41
_journal_year                    2008
_chemical_formula_sum
'Al2.34 Ca0.02 Fe0.02 H4 K0.78 Mg0.34 Na0.02 O12 On Si3.35'
_space_group_IT_number           12
_symmetry_space_group_name_Hall  '-C 2y'
_symmetry_space_group_name_H-M   'C 1 2/m 1'
_cell_angle_alpha                90
_cell_angle_beta                 101.11
_cell_angle_gamma                90
_cell_length_a                   5.189
_cell_length_b                   8.953
_cell_length_c                   10.129
_cell_volume                     461.796
_cod_data_source_file            db5033.cif
_cod_data_source_block           GSAS
_cod_depositor_comments
;
The original entry contained the following two atoms:

M 0.00000 0.32980 0.50000 1.00000
T 0.07200 0.16300 0.23050 1.00000

Their atom label and occupancy was changed to:
Al1 0.00000 0.32980 0.50000 0.66
Mg1 0.00000 0.32980 0.50000 0.34
Si1 0.07200 0.16300 0.23050 0.83
Al2 0.07200 0.16300 0.23050 0.17

Luca Lutterotti  3/5/2013
;
_cod_original_formula_sum
'K0.78 Ca0.02 Na0.02 Mg0.34 Al2.34 Fe0.02 Si3.35 O10 (OH)2 H2On'
_cod_database_code               2300189
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
1/2+x,1/2+y,z
x,-y,z
1/2+x,1/2-y,z
-x,y,-z
1/2-x,1/2+y,-z
-x,-y,-z
1/2-x,1/2-y,-z
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
Al1 0.00000 0.32980 0.50000 0.66
Mg1 0.00000 0.32980 0.50000 0.34
Si1 0.07200 0.16300 0.23050 0.83
Al2 0.07200 0.16300 0.23050 0.17
K 0.00000 0.50000 0.00000 0.65000
O1 0.00000 0.00000 0.13300 1.00000
O2 0.34500 0.18400 0.18400 1.00000
O3 0.14400 0.18100 0.39300 1.00000
O4 0.04300 0.50000 0.38600 1.00000