data_9001640
_publ_section_title
;
 The crystal structure of pinchite, Hg5Cl2O4
;
_journal_name_full               'American Mineralogist'
_journal_page_first              1199
_journal_page_last               1203
_journal_volume                  79
_journal_year                    1994
_chemical_formula_sum            'Cl2 Hg5 O4'
_chemical_name_mineral           Pinchite
_space_group_IT_number           72
_symmetry_space_group_name_Hall  '-I 2 2c'
_symmetry_space_group_name_H-M   'I b a m'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_length_a                   11.619
_cell_length_b                   6.105
_cell_length_c                   11.710
_cell_volume                     830.637
_exptl_crystal_density_diffrn    9.099
_[local]_cod_chemical_formula_sum_orig 'Hg5 Cl2 O4'
_cod_database_code               9001640
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
1/2+x,1/2+y,1/2+z
x,-y,1/2+z
1/2+x,1/2-y,+z
-x,y,1/2-z
1/2-x,1/2+y,-z
-x,y,1/2+z
1/2-x,1/2+y,+z
x,-y,1/2-z
1/2+x,1/2-y,-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
Hg1 0.14050 0.21450 0.00000
Hg2 0.16180 0.50000 0.25000
Hg3 0.00000 0.00000 0.25000
Cl 0.10820 0.27500 0.50000
O 0.14400 0.19900 0.17540
