#------------------------------------------------------------------------------
#$Date: 2009-11-18 16:56:34 +0200 (Wed, 18 Nov 2009) $
#$Revision: 858 $
#$URL: file:///home/coder/svn-repositories/cod/cif/9/9009866.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_9009866
loop_
_publ_author_name
'Moore P B'
_publ_section_title
;
 The crystal structure of welinite (Mn+4,W)<1(Mn+2,W,Mg)<3Si(O,OH)7
;
_journal_name_full               'Arkiv for Mineralogi och Geologi'
_journal_page_first              459
_journal_page_last               466
_journal_volume                  4
_journal_year                    1969
_chemical_formula_sum            'Mg0.3 Mn2.81 O7 Si W0.4'
_[local]_cod_chemical_formula_sum_orig 'Mn2.81 W.4 Mg.3 Si O7'
_chemical_name_mineral           Welinite
_symmetry_space_group_name_H-M   'P 63'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                120
_cell_length_a                   8.155
_cell_length_b                   8.155
_cell_length_c                   4.785
_cell_volume                     275.588
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
x-y,x,1/2+z
-y,x-y,z
-x,-y,1/2+z
-x+y,-x,z
y,-x+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
Mn4+1 0.00000 0.00000 0.01500 0.80000 0.01127
W1 0.00000 0.00000 0.01500 0.10000 0.01127
Mn2+2 0.30430 0.89060 0.00000 0.67000 0.00963
W2 0.30430 0.89060 0.00000 0.10000 0.00963
Mg2 0.30430 0.89060 0.00000 0.10000 0.00963
Si 0.33333 0.66667 0.43700 1.00000 0.00405
O1 0.33333 0.66667 0.76700 1.00000 0.00165
O2 0.13500 0.63000 0.29700 1.00000 0.00570
O3 0.05800 0.84300 -0.23400 1.00000 0.01507