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#$Date: 2012-02-28 17:44:07 +0200 (Tue, 28 Feb 2012) $
#$Revision: 35913 $
#$URL: file:///home/coder/svn-repositories/cod/cif/9/00/16/9001689.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_9001689
loop_
_publ_author_name
'Dai, Y. S.'
'Post, J. E.'
_publ_section_title
;
 Crystal structure of hillebrandite: A natural analogue of calcium silicate
 hydrate (CSH) phases in Portland cement
;
_journal_name_full               'American Mineralogist'
_journal_page_first              841
_journal_page_last               844
_journal_volume                  80
_journal_year                    1995
_chemical_formula_sum            'Ca3 H2 O7.5 Si1.5'
_chemical_name_mineral           Hillebrandite
_space_group_IT_number           36
_symmetry_space_group_name_Hall  'C 2c -2'
_symmetry_space_group_name_H-M   'C m c 21'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_length_a                   3.6389
_cell_length_b                   16.311
_cell_length_c                   11.829
_cell_volume                     702.100
_exptl_crystal_density_diffrn    2.690
_[local]_cod_chemical_formula_sum_orig 'Ca3 Si1.5 O7.5 H2'
_cod_database_code               9001689
_amcsd_database_code             AMCSD#0001744
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
1/2+x,1/2+y,z
x,-y,1/2+z
1/2+x,1/2-y,1/2+z
-x,y,z
1/2-x,1/2+y,z
-x,-y,1/2+z
1/2-x,1/2-y,1/2+z
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_U_iso_or_equiv
Ca1 0.00000 0.21640 0.06400 1.00000 0.01370
Ca2 0.50000 0.39920 -0.04790 1.00000 0.01140
Ca3 0.50000 0.04900 0.18880 1.00000 0.01180
Si1 0.43000 0.08630 -0.10190 0.50000 0.01100
Si2 0.50000 0.37270 0.21340 0.50000 0.00800
O-H1 0.00000 0.30910 -0.08120 1.00000 0.01400
O2 0.50000 0.12590 0.01980 1.00000 0.01300
O3 0.50000 0.46370 0.13800 1.00000 0.02400
O4 0.50000 0.29640 0.12510 1.00000 0.01900
O5 0.00000 0.48900 -0.11230 1.00000 0.01000
O-H6 0.00000 0.13700 0.23610 1.00000 0.01300
O7 0.36400 0.13280 -0.20500 0.50000 0.01400
O8 0.00000 0.11000 -0.12700 0.50000 0.01400