data_9015618
_publ_section_title
;
 The Structure of Hemimorphite (H2 Zn2 Si O5)
 _cod_database_code 1011257
;
_journal_name_full               'Zeitschrift fur Kristallographie'
_journal_page_first              1
_journal_page_last               8
_journal_volume                  83
_journal_year                    1932
_chemical_formula_sum            'O5 Si Zn2'
_chemical_name_mineral           Hemimorphite
_space_group_IT_number           44
_symmetry_space_group_name_Hall  'I 2 -2'
_symmetry_space_group_name_H-M   'I m m 2'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_length_a                   8.38
_cell_length_b                   10.7
_cell_length_c                   5.11
_cell_volume                     458.193
_database_code_amcsd             0018118
_exptl_crystal_density_diffrn    3.463
_[local]_cod_chemical_formula_sum_orig 'Si Zn2 O5'
_cod_database_code               9015618
loop_
_space_group_symop_operation_xyz
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
-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
Si1 0.00000 0.16000 0.00000
Zn1 0.30000 0.34200 0.01000
O1 0.00000 0.00000 0.00000
O2 0.16100 0.18700 0.85000
O3 0.00000 0.18700 0.30500
O4 0.25000 0.50000 0.85000
O5 0.00000 0.50000 0.35000
