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