data_global
_chemical_name_mineral 'Chudobaite'
loop_
_publ_author_name
'Dorner R'
'Weber K'
_journal_name_full 'Naturwissenschaften'
_journal_volume 63 
_journal_year 1976
_journal_page_first 243
_journal_page_last 243
_publ_section_title
;
 Die Kristallstruktur von Chudobait, (Mg,Zn)5H2[AsO4]4*10H2O
 Note: many positional parameters were edited according to ICSD
 because they were missing negative signs
;
_database_code_amcsd 0019226
_chemical_compound_source 'Tsumeb mine, Tsumeb, Namibia'
_chemical_formula_sum '(Mg3.5 Zn1.5) As4 O26 H22'
_cell_length_a 7.797
_cell_length_b 11.440
_cell_length_c 6.616
_cell_angle_alpha 115.31
_cell_angle_beta 95.77
_cell_angle_gamma 93.87
_cell_volume 526.762
_exptl_crystal_density_diffrn      2.903
_symmetry_space_group_name_H-M 'P -1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '-x,-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
Mg1   0.00000   0.00000   0.00000   0.70000   0.00887
Zn1   0.00000   0.00000   0.00000   0.30000   0.00887
Mg2   0.08270   0.40626  -0.19531   0.70000   0.00291
Zn2   0.08270   0.40626  -0.19531   0.30000   0.00291
Mg3   0.36190   0.56202  -0.33033   0.70000   0.00887
Zn3   0.36190   0.56202  -0.33033   0.30000   0.00887
As1   0.03719   0.33476   0.25668   1.00000   0.00443
As2  -0.36510   0.36929  -0.22421   1.00000   0.00570
O1   0.04700   0.42920   0.12060   1.00000   0.00798
O2  -0.17320   0.30350   0.28380   1.00000   0.00849
O3  -0.43450   0.44730  -0.37520   1.00000   0.00975
O4   0.15750   0.22260   0.70610   1.00000   0.01267
O5  -0.31410   0.46740   0.05180   1.00000   0.00836
O6   0.11430   0.19410   0.10640   1.00000   0.01039
O7  -0.17900   0.30720  -0.33110   1.00000   0.00937
O8   0.15220  -0.58880   0.51730   1.00000   0.00937
O9   0.52730  -0.25570  -0.14170   1.00000   0.01570
O10  -0.50010   0.23850  -0.26800   1.00000   0.01254
O11   0.07810  -0.04330   0.68760   1.00000   0.01900
O12  -0.22850   0.05720  -0.09440   1.00000   0.02508
O13   0.44400  -0.06500   0.68930   1.00000   0.03141
H1  -0.23500   0.14900   0.01400   1.00000 ?
H2   0.13200   0.19100   0.81600   1.00000 ?
H3   0.51500  -0.23100   0.01900   1.00000 ?
H4   0.42400  -0.11000  -0.19900   1.00000 ?
H5   0.43100  -0.07300   0.56800   1.00000 ?
H6  -0.31400   0.01600  -0.14100   1.00000 ?
H7  -0.18400   0.30600   0.50700   1.00000 ?
H8   0.25800   0.21700   0.69600   1.00000 ?
H9  -0.36400  -0.22100  -0.13500   1.00000 ?
H10   0.20000  -0.05000   0.68900   1.00000 ?
H11   0.00000  -0.10300   0.55400   1.00000 ?