#------------------------------------------------------------------------------
#$Date: 2009-11-18 16:56:34 +0200 (Wed, 18 Nov 2009) $
#$Revision: 858 $
#$URL: file:///home/coder/svn-repositories/cod/cif/9/9005272.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_9005272
loop_
_publ_author_name
'Wildner M'
'Giester G'
'Lengauer C L'
'McCammon C A'
_publ_section_title
;
 Structure and crystal chemistry of vivianite-type compounds: Crystal
 structures of erythrite and annabergite with a Mossbauer study of erythrite
;
_journal_name_full               'European Journal of Mineralogy'
_journal_page_first              187
_journal_page_last               192
_journal_volume                  8
_journal_year                    1996
_chemical_formula_sum            'As2 H16 Mg0.36 Ni2.64 O16'
_[local]_cod_chemical_formula_sum_orig '(Ni2.64 Mg.36) As2 O16 H16'
_chemical_name_mineral           Annabergite
_symmetry_space_group_name_H-M   'C 1 2/m 1'
_cell_angle_alpha                90
_cell_angle_beta                 105.00
_cell_angle_gamma                90
_cell_length_a                   10.179
_cell_length_b                   13.309
_cell_length_c                   4.725
_cell_volume                     618.296
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
1/2+x,1/2+y,z
x,-y,z
1/2+x,1/2-y,z
-x,y,-z
1/2-x,1/2+y,-z
-x,-y,-z
1/2-x,1/2-y,-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
NiMe1 0.00000 0.00000 0.00000 0.99000 ?
MgMe1 0.00000 0.00000 0.00000 0.01000 ?
NiMe2 0.00000 0.38583 0.00000 0.82500 ?
MgMe2 0.00000 0.38583 0.00000 0.17500 ?
As 0.31620 0.00000 0.37558 1.00000 ?
O1 0.14910 0.00000 0.38070 1.00000 ?
O2 0.40720 0.00000 0.72870 1.00000 ?
O3 0.34290 0.10760 0.21040 1.00000 ?
OW1 0.09610 0.11350 0.81260 1.00000 ?
OW2 0.40010 0.22530 0.71830 1.00000 ?
H11 0.11800 0.08500 0.67400 1.00000 0.02290
H12 0.16400 0.12800 0.92400 1.00000 0.04140
H21 0.37200 0.20500 0.54500 1.00000 0.04660
H22 0.44600 0.27500 0.71100 1.00000 0.04570
loop_
_atom_site_aniso_label
_atom_site_aniso_U_11
_atom_site_aniso_U_22
_atom_site_aniso_U_33
_atom_site_aniso_U_12
_atom_site_aniso_U_13
_atom_site_aniso_U_23
NiMe1 0.01120 0.01700 0.00800 0.00000 -0.00050 0.00000
MgMe1 0.01120 0.01700 0.00800 0.00000 -0.00050 0.00000
NiMe2 0.01280 0.01240 0.01140 0.00000 0.00310 0.00000
MgMe2 0.01280 0.01240 0.01140 0.00000 0.00310 0.00000
As 0.01020 0.01220 0.00950 0.00000 0.00230 0.00000
O1 0.01020 0.01220 0.00950 0.00000 0.00230 0.00000
O2 0.01550 0.01450 0.01020 0.00000 -0.00030 0.00000
O3 0.01530 0.01350 0.01470 0.00150 0.00520 -0.00020
OW1 0.01550 0.01960 0.01530 -0.00020 0.00390 -0.00070
OW2 0.02450 0.01800 0.01730 0.00180 0.00480 0.00240