data_global
_chemical_name_mineral 'Arsenbrackebuschite'
loop_
_publ_author_name
'Hofmeister W'
'Tillmanns E'
_journal_name_full 'Tschermaks Mineralogische und Petrographische Mitteilungen'
_journal_volume 25 
_journal_year 1978
_journal_page_first 153
_journal_page_last 163
_publ_section_title
;
 Strukturelle untersuchungen an arsenbrackebuschit
;
_database_code_amcsd 0015672
_chemical_compound_source 'Tsumeb, Namibia'
_chemical_formula_sum 'Pb2 (Fe.65 Zn.35) As2 O9 H1.35'
_cell_length_a 7.763
_cell_length_b 6.046
_cell_length_c 9.022
_cell_angle_alpha 90
_cell_angle_beta 112.5
_cell_angle_gamma 90
_cell_volume 391.215
_exptl_crystal_density_diffrn      6.526
_symmetry_space_group_name_H-M 'P 1 21/m 1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  'x,1/2-y,z'
  '-x,1/2+y,-z'
  '-x,-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
Pb1   0.27390   0.75000   0.73560   1.00000
Pb2   0.69600   0.75000   0.60230   1.00000
Fe3+   0.00000   0.00000   0.00000   0.65000
Zn2+   0.00000   0.00000   0.00000   0.35000
As1   0.43570   0.75000   0.17360   1.00000
As2   0.03220   0.75000   0.33670   1.00000
O1   0.99600   0.98300   0.22500   1.00000
O2   0.26200   0.75000   0.47100   1.00000
O3   0.89800   0.75000   0.44400   1.00000
O4   0.49200   0.97700   0.29100   1.00000
O5   0.54100   0.75000   0.04100   1.00000
O6   0.19900   0.75000   0.06200   1.00000
O-H7   0.82100   0.75000   0.91600   0.65000
Wat7   0.82100   0.75000   0.91600   0.35000