data_global _chemical_name_mineral 'Slavikite' loop_ _publ_author_name 'Susse P' _journal_name_full 'Neues Jahrbuch fur Mineralogie, Monatshefte' _journal_volume 1975 _journal_year 1975 _journal_page_first 27 _journal_page_last 40 _publ_section_title ; Struktur und kristallchemie des slavikits, NaMg2Fe5(SO4)7(OH)6(H2O)33 ; _database_code_amcsd 0014752 _chemical_compound_source 'La Alcaparrosa, San Juan, Argentina' _chemical_formula_sum 'Na Mg2 Fe5 S7 O67 H72' _cell_length_a 12.20 _cell_length_b 12.20 _cell_length_c 35.13 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 120 _cell_volume 4528.229 _exptl_crystal_density_diffrn 1.892 _symmetry_space_group_name_H-M 'R -3' loop_ _space_group_symop_operation_xyz 'x,y,z' '2/3+x,1/3+y,1/3+z' '1/3+x,2/3+y,2/3+z' 'y,-x+y,-z' '2/3+y,1/3-x+y,1/3-z' '1/3+y,2/3-x+y,2/3-z' '-x+y,-x,z' '2/3-x+y,1/3-x,1/3+z' '1/3-x+y,2/3-x,2/3+z' '-x,-y,-z' '2/3-x,1/3-y,1/3-z' '1/3-x,2/3-y,2/3-z' '-y,x-y,z' '2/3-y,1/3+x-y,1/3+z' '1/3-y,2/3+x-y,2/3+z' 'x-y,x,-z' '2/3+x-y,1/3+x,1/3-z' '1/3+x-y,2/3+x,2/3-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 Na 0.00000 0.00000 0.46300 0.50000 0.27863 Mg 0.00000 0.00000 0.34310 1.00000 0.02026 Fe1 0.00000 0.00000 0.19510 1.00000 0.02280 Fe2 0.50000 0.00000 0.50000 1.00000 0.02508 S1 0.00000 0.00000 0.00000 1.00000 0.03331 S2 0.44760 0.38720 0.10400 1.00000 0.03179 O1 0.36200 0.34000 0.07100 1.00000 0.05193 O2 0.50800 0.52600 0.10810 1.00000 0.04433 O3 0.54700 0.34900 0.10010 1.00000 0.03673 O4 0.37300 0.32800 0.14000 1.00000 0.03040 O5 0.93800 0.90300 0.03100 0.33333 0.07599 O6 0.86500 0.94700 0.01400 0.33333 0.13932 O-H7 0.70600 0.48400 0.16900 1.00000 0.03546 Wat8 0.46200 0.64700 0.04360 1.00000 0.05573 Wat9 0.70000 0.48300 0.02620 1.00000 0.05066 Wat10 0.75600 0.68000 0.11620 1.00000 0.03926 Wat11 0.10600 0.19500 0.09220 1.00000 0.04433 Wat12 0.68200 0.69000 0.00640 1.00000 0.04813 Wat13 0.54900 0.76800 0.14610 0.50000 0.08612