data_global
_chemical_name_mineral 'Epsomite'
loop_
_publ_author_name
'Mauro D'
'Biagioni C'
'Pasero M'
'Skogby H'
_journal_name_full 'Atti della Societa Toscana di Scienze Naturali, Memorie, Serie A'
_journal_volume 126 
_journal_year 2019
_journal_page_first 33
_journal_page_last 44
_publ_section_title
;
 Crystal-chemistry of sulfates From the Apuan Alps (Tuscany, Italy).
 III. Mg-rich sulfate assemblages from the Fornovolasco mining complex
;
_database_code_amcsd 0020907
_chemical_compound_source 'Fornovolasco, Apuan Alps, Tuscany, Italy'
_chemical_formula_sum '(Mg.83 Fe.17) S O11 H14'
_cell_length_a 11.8664
_cell_length_b 12.0150
_cell_length_c 6.8598
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 978.035
_exptl_crystal_density_diffrn      1.710
_symmetry_space_group_name_H-M 'P 21 21 21'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '-x,1/2+y,1/2-z'
  '1/2+x,1/2-y,-z'
  '1/2-x,-y,1/2+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
Mg   0.42307   0.10666   0.03998   0.83000   0.01895
Fe   0.42307   0.10666   0.03998   0.17000   0.01895
S   0.72671   0.18390   0.49056   1.00000   0.01919
O1   0.68563   0.07497   0.42743   1.00000   0.04160
O2   0.85051   0.18723   0.48306   1.00000   0.03290
O3   0.68859   0.20572   0.69079   1.00000   0.03630
O4   0.68038   0.27211   0.36226   1.00000   0.03060
Ow1   0.26452   0.17420   0.00317   1.00000   0.03140
Ow2   0.47177   0.24888   0.19781   1.00000   0.02482
Ow3   0.46905   0.17613   0.77872   1.00000   0.03120
Ow4   0.58379   0.04676   0.07662   1.00000   0.03700
Ow5   0.37590   0.96104   0.88973   1.00000   0.02920
Ow6   0.36262   0.03404   0.29158   1.00000   0.03450
Ow7   0.49139   0.43836   0.93840   1.00000   0.03670
H11   0.23800   0.20300   0.88300   1.00000   0.06700
H12   0.23800   0.21800   0.09400   1.00000   0.08000
H21   0.53700   0.24900   0.24600   1.00000   0.04500
H22   0.43100   0.26370   0.29500   1.00000   0.03400
H31   0.53590   0.18300   0.75000   1.00000   0.04100
H32   0.42900   0.21900   0.69500   1.00000   0.05100
H41   0.61200   0.98100   0.03200   1.00000   0.08000
H42   0.62500   0.05900   0.18500   1.00000   0.05200
H51   0.41600   0.94700   0.79000   1.00000   0.04400
H52   0.36400   0.89800   0.94800   1.00000   0.04300
H61   0.39700   0.00700   0.38300   1.00000   0.05100
H62   0.29400   0.02500   0.31900   1.00000   0.04400
H71   0.47600   0.38000   0.98900   1.00000   0.04100
H72   0.42900   0.47500   0.95500   1.00000   0.06600