#------------------------------------------------------------------------------
#$Date: 2023-05-18 15:51:33 +0300 (Thu, 18 May 2023) $
#$Revision: 283866 $
#$URL: svn://www.crystallography.net/cod/cif/9/00/97/9009704.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_9009704
loop_
_publ_author_name
'Catti M'
'Ferraris G'
'Ivaldi G'
_publ_section_title
;
 Hydrogen bonding in the crystalline state. Structure of talmessite,
 Ca2(Mg,Co)(AsO4)2*2H2O, and crystal chemistry of related minerals
 Locality: Bou-Azzer, Morocco
;
_journal_name_full               'Bulletin de Mineralogie'
_journal_page_first              230
_journal_page_last               236
_journal_volume                  100
_journal_year                    1977
_chemical_formula_sum            'As2 Ca2 Co0.35 H1.02 Mg0.65 O10'
_chemical_name_mineral           Talmessite
_space_group_IT_number           2
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_cell_angle_alpha                97.3
_cell_angle_beta                 108.7
_cell_angle_gamma                108.1
_cell_formula_units_Z            1
_cell_length_a                   5.874
_cell_length_b                   6.943
_cell_length_c                   5.537
_cell_volume                     196.762
_cod_original_formula_sum        'Ca2 (Mg.65 Co.35) As2 O10 H1.02'
_cod_database_code               9009704
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
-x,-y,-z
loop_
_atom_site_type_symbol
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_attached_hydrogens
Ca Ca 0.29490 0.76220 0.65290 1.00000 0
Mg Mg 0.00000 0.00000 0.00000 0.65000 0
Co Co 0.00000 0.00000 0.00000 0.35000 0
As As 0.33410 0.24600 0.67030 1.00000 0
O O1 0.34200 0.12720 0.92170 1.00000 0
O O2 0.23850 0.05040 0.39860 1.00000 0
O O3 0.15500 0.39160 0.64120 1.00000 0
O O4 0.63950 0.38640 0.71490 1.00000 0
O Wat 0.95330 0.27780 0.07450 1.00000 2
