data_global
_chemical_name_mineral 'Dwornikite'
loop_
_publ_author_name
'Talla D'
'Balla M'
'Aicher C'
'Lengauer C L'
'Wildner M'
_journal_name_full 'American Mineralogist'
_journal_volume 105 
_journal_year 2020
_journal_page_first 1472
_journal_page_last 1489
_publ_section_title
;
 Structural and spectroscopic study of the kieserite-dwornikite solid-solution
 series, (Mg,Ni)SO4*H2O, at ambient and low temperatures, with cosmochemical
 implications for icy moons and Mars
 Note: T = -80 C
;
_database_code_amcsd 0020997
_chemical_compound_source 'Synthetic'
_chemical_formula_sum 'Ni S O5 H2'
_cell_length_a 6.8115
_cell_length_b 7.6122
_cell_length_c 7.4444
_cell_angle_alpha 90
_cell_angle_beta 117.629
_cell_angle_gamma 90
_cell_volume 341.980
_exptl_crystal_density_diffrn      3.356
_symmetry_space_group_name_H-M 'C 1 2/c 1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2+y,z'
  'x,-y,1/2+z'
  '1/2+x,1/2-y,1/2+z'
  '-x,y,1/2-z'
  '1/2-x,1/2+y,1/2-z'
  '-x,-y,-z'
  '1/2-x,1/2-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
Ni   0.00000   0.50000   0.00000   0.00428
S   0.00000   0.15727   0.25000   0.00404
O1   0.17262   0.04732   0.40413   0.00843
O2   0.10428   0.27059   0.15519   0.00703
O3   0.00000   0.63077   0.25000   0.00631
H   0.10900   0.69500   0.29400   0.02000
loop_
_atom_site_aniso_label
_atom_site_aniso_U_11
_atom_site_aniso_U_22
_atom_site_aniso_U_33
_atom_site_aniso_U_12
_atom_site_aniso_U_13
_atom_site_aniso_U_23
Ni 0.00390 0.00468 0.00412 -0.00014 0.00173 0.00016
S 0.00314 0.00423 0.00453 0.00000 0.00159 0.00000
O1 0.00520 0.01000 0.00940 0.00250 0.00281 0.00463
O2 0.00670 0.00660 0.00940 0.00068 0.00512 0.00264
O3 0.00600 0.00700 0.00610 0.00000 0.00290 0.00000