#------------------------------------------------------------------------------
#$Date: 2015-07-13 21:54:14 +0300 (Mon, 13 Jul 2015) $
#$Revision: 150777 $
#$URL: svn://www.crystallography.net/cod/cif/1/52/84/1528484.cif $
#------------------------------------------------------------------------------
#
# This file is available in the Crystallography Open Database (COD),
# http://www.crystallography.net/
#
# All data on this site have been placed in the public domain by the
# contributors.
#
data_1528484
loop_
_publ_author_name
'Fleet, M.'
'Liu, X'
_publ_section_title
;
 High-pressure rare earth silicates: lanthanum silicate with barium
 phosphate structure, holmium silicate apatite, and lutetium disilicate
 type X
;
_journal_name_full               'Journal of Solid State Chemistry'
_journal_page_first              3275
_journal_page_last               3283
_journal_volume                  178
_journal_year                    2005
_chemical_formula_sum            'H2 Ho8.67 O26 Si6'
_chemical_name_systematic        'Ho8.67 (Si O4)6 (O H)2'
_space_group_IT_number           176
_symmetry_space_group_name_Hall  '-P 6c'
_symmetry_space_group_name_H-M   'P 63/m'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                120
_cell_formula_units_Z            1
_cell_length_a                   9.3221
_cell_length_b                   9.3221
_cell_length_c                   6.7347
_cell_volume                     506.846
_citation_journal_id_ASTM        JSSCBI
_cod_data_source_file            Fleet_JSSCBI_2005_734.cif
_cod_data_source_block           H2Ho8.67O26Si6
_cod_original_cell_volume        506.8464
_cod_database_code               1528484
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
x-y,x,z+1/2
-y,x-y,z
-x,-y,z+1/2
-x+y,-x,z
y,-x+y,z+1/2
-x,-y,-z
-x+y,-x,-z-1/2
y,-x+y,-z
x,y,-z-1/2
x-y,x,-z
-y,x-y,-z-1/2
loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_U_iso_or_equiv
Si1 Si+4 0.3732 0.3998 0.25 1 0.0
O3 O-2 0.2493 0.3377 0.0628 1 0.0
O1 O-2 0.4882 0.3177 0.25 1 0.0
H1 H+1 0 0 0.05 0.5 0.0
O2 O-2 0.4738 0.5974 0.25 1 0.0
O4 O-2 0 0 0.221 0.5 0.0
Ho2 Ho+3 0.99514 0.23486 0.25 0.967 0.0
Ho1 Ho+3 0.6667 0.3333 0.00034 0.715 0.0
