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#$Date: 2013-05-05 17:21:46 +0300 (Sun, 05 May 2013) $
#$Revision: 85285 $
#$URL: file:///home/coder/svn-repositories/cod/cif/9/01/10/9011070.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_9011070
loop_
_publ_author_name
'Krogh-Moe J'
_publ_section_title
;
 A note on the structure of pinnoite
;
_journal_name_full               'Acta Crystallographica'
_journal_page_first              500
_journal_page_last               501
_journal_volume                  23
_journal_year                    1967
_chemical_formula_sum            'B2 H6 Mg O7'
_chemical_name_mineral           Pinnoite
_space_group_IT_number           77
_symmetry_space_group_name_Hall  'P 4c'
_symmetry_space_group_name_H-M   'P 42'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_length_a                   7.62
_cell_length_b                   7.62
_cell_length_c                   8.19
_cell_volume                     475.547
_exptl_crystal_density_diffrn    2.290
_[local]_cod_chemical_formula_sum_orig 'Mg B2 O7 H6'
_cod_database_code               9011070
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
-y,x,1/2+z
-x,-y,z
y,-x,1/2+z
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
Mg 0.24870 0.24870 0.22900 0.00811
B1 0.38830 0.37610 0.87380 0.00266
B2 0.11190 0.10910 0.58300 0.01203
O1 0.00000 0.00000 0.98410 0.01077
O2 0.50000 0.50000 0.45120 0.00823
O-H3 0.33520 0.23880 0.99160 0.01064
O-H4 0.15980 0.26380 0.47090 0.01203
O-H5 0.47950 0.29130 0.73000 0.00405
O-H6 0.01760 0.19790 0.71830 0.01115
O-H7 0.24500 0.48230 0.80280 0.00684
O-H8 0.27040 0.01760 0.63870 0.00545