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#$Date: 2010-06-10 19:56:54 +0300 (Thu, 10 Jun 2010) $
#$Revision: 1214 $
#$URL: file:///home/coder/svn-repositories/cod/cif/9/9013997.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_9013997
loop_
_publ_author_name
'Zubkova, N. V.'
'Pekov, I. V.'
'Pushcharovskii, D. Y.'
'Kazantsev, S. S.'
_publ_section_title
;
 Crystal structure of yegorovite Na4[Si4O8(OH)4]*7H2O
 Locality: Lovozero alkaline complex, Kola Peninsula, Russia
;
_journal_name_full               'Doklady Earth Sciences'
_journal_page_first              814
_journal_page_last               818
_journal_volume                  427
_journal_year                    2009
_chemical_formula_sum            'H18 Na4 O19 Si4'
_chemical_name_mineral           Yegorovite
_space_group_IT_number           14
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_cell_angle_alpha                90
_cell_angle_beta                 104.675
_cell_angle_gamma                90
_cell_length_a                   9.8744
_cell_length_b                   12.3981
_cell_length_c                   14.8973
_cell_volume                     1764.289
_exptl_crystal_density_diffrn    1.982
_[local]_cod_chemical_formula_sum_orig 'Na4 Si4 O19 H18'
_cod_database_code               9013997
_amcsd_database_code             AMCSD#0013826
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
x,1/2-y,1/2+z
-x,1/2+y,1/2-z
-x,-y,-z
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
Na1 0.05320 0.61840 0.06992 0.02750
Na2 0.76350 0.86080 0.05829 0.02860
Na3 0.30450 0.89230 0.07159 0.03110
Na4 0.49020 0.62510 0.05502 0.02980
Si1 0.59375 0.82135 0.22737 0.01380
Si2 0.85409 0.68222 0.23240 0.01250
Si3 0.34122 0.67253 0.23305 0.01380
Si4 0.10049 0.83149 0.23761 0.01520
O1 0.06650 0.42650 0.08590 0.02790
H1a 0.03300 0.41200 0.12500 0.00500
H1b 0.13400 0.46300 0.10600 0.04000
O2 0.67510 0.69000 0.00020 0.02820
H2a 0.67300 0.67500 -0.05600 0.03000
H2b 0.69000 0.64000 0.04600 0.15000
O3 0.97830 0.79370 0.00890 0.03880
H3a 0.02700 0.85100 0.04500 0.05000
H3b 0.95800 0.80900 -0.05900 0.03400
O4 0.33370 0.75440 -0.02830 0.03650
H4a 0.25200 0.72400 -0.06200 0.08000
H4b 0.38900 0.78300 -0.06400 0.10000
O5 0.39590 0.61840 0.33210 0.01950
O6 0.90240 0.62740 0.33120 0.01650
O7 0.15490 0.88390 0.33760 0.02230
O8 0.65070 0.87880 0.32480 0.02490
O9 0.86970 0.60080 0.14810 0.01700
H9 0.86700 0.54000 0.15700 0.00300
O10 0.93850 0.79130 0.21610 0.01990
O11 0.43690 0.77110 0.21090 0.02180
O12 0.57960 0.90350 0.13850 0.02340
H12 0.62900 0.94700 0.17000 0.10000
O13 0.68760 0.71880 0.20820 0.01810
O14 0.18330 0.72190 0.21850 0.01850
O15 0.82700 0.04190 0.09220 0.02900
H15a 0.90800 0.07300 0.12000 0.00500
H15b 0.74600 0.05800 0.10700 0.08000
O16 0.32410 0.58910 0.14580 0.02010
H16 0.34600 0.53120 0.14800 0.01800
O17 0.11860 0.91360 0.15620 0.02100
H17 0.12300 0.97100 0.17200 0.09000
O18 0.57690 0.45850 0.10600 0.03030
H18a 0.65800 0.45200 0.11000 0.04000
H18b 0.53500 0.42800 0.13700 0.01800
O19 0.32820 0.07560 0.09440 0.02540
H19a 0.40500 0.09500 0.12300 0.03000
H19b 0.26100 0.11700 0.11700 0.10000