#------------------------------------------------------------------------------
#$Date: 2017-10-06 19:24:22 +0300 (Fri, 06 Oct 2017) $
#$Revision: 201816 $
#$URL: file:///home/coder/svn-repositories/cod/cif/9/01/52/9015250.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_9015250
loop_
_publ_author_name
'Warren, B.'
_publ_section_title
;
 The structure of tremolite H2 Ca2 Mg5 (Si O3)8
 _cod_database_code 1011222
;
_journal_name_full               'Zeitschrift fur Kristallographie'
_journal_page_first              42
_journal_page_last               57
_journal_volume                  72
_journal_year                    1929
_chemical_formula_sum            'Ca2 Mg5 O24 Si8'
_chemical_name_mineral           Tremolite
_space_group_IT_number           12
_symmetry_space_group_name_Hall  '-I 2y'
_symmetry_space_group_name_H-M   'I 1 2/m 1'
_cell_angle_alpha                90
_cell_angle_beta                 73.97
_cell_angle_gamma                90
_cell_length_a                   9.77
_cell_length_b                   17.79999
_cell_length_c                   5.26
_cell_volume                     879.177
_database_code_amcsd             0018086
_exptl_crystal_density_diffrn    3.061
_cod_duplicate_entry             1011222
_cod_original_formula_sum        'O24 Ca2 Mg5 Si8'
_cod_database_code               9015250
loop_
_space_group_symop_operation_xyz
x,y,z
1/2+x,1/2+y,1/2+z
x,-y,z
1/2+x,1/2-y,1/2+z
-x,y,-z
1/2-x,1/2+y,1/2-z
-x,-y,-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
O1 0.14000 0.08000 0.10000
O2 0.14000 0.00000 -0.40000
O3 0.14000 0.18000 -0.40000
O4 0.14000 0.25000 0.10000
O5 0.14000 0.36000 -0.25000
O6 0.14000 0.39000 0.25000
O7 0.14000 0.50000 -0.40000
Ca1 0.00000 0.28000 0.50000
Mg1 0.00000 0.09000 0.50000
Mg2 0.00000 0.17000 0.00000
Mg3 0.00000 0.00000 0.00000
Si1 0.29000 0.08000 0.01000
Si2 0.29000 0.18000 -0.49000
loop_
_cod_related_entry_id
_cod_related_entry_database
_cod_related_entry_code
1 AMCSD 0018086
