data_global _chemical_name_mineral 'Marecottite' loop_ _publ_author_name 'Brugger J' 'Burns P C' 'Meisser N' _journal_name_full 'American Mineralogist' _journal_volume 88 _journal_year 2003 _journal_page_first 676 _journal_page_last 685 _publ_section_title ; Contribution to the mineralogy of acid drainage of uranium minerals: Marecottite and the zippeite-group ; _database_code_amcsd 0003077 _chemical_compound_source 'La Creusaz uranium prospect near Les Marecottes, Western Swiss Alps, Switzerland' _chemical_formula_sum 'U8 S4 (Mg2.16 Mn.84) O68 H58' _cell_length_a 10.815 _cell_length_b 11.249 _cell_length_c 13.851 _cell_angle_alpha 66.224 _cell_angle_beta 72.412 _cell_angle_gamma 69.955 _cell_volume 1422.057 _exptl_crystal_density_diffrn 3.827 _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 U1 0.54440 0.89320 0.12850 1.00000 0.01500 U2 -0.02900 0.60040 0.36270 1.00000 0.01400 U3 0.20590 0.87220 0.12260 1.00000 0.01400 U4 0.31100 0.57860 0.36480 1.00000 0.01400 S1 0.12320 0.12510 -0.12630 1.00000 0.01500 S2 0.37060 0.38440 0.63410 1.00000 0.01600 Mg1 0.00000 0.50000 0.00000 0.62000 0.02200 Mn1 0.00000 0.50000 0.00000 0.38000 0.02200 Mg2 0.50000 0.00000 0.50000 0.72000 0.01600 Mn2 0.50000 0.00000 0.50000 0.28000 0.01600 Mg3 0.00000 0.00000 0.50000 0.82000 0.02000 Mn3 0.00000 0.00000 0.50000 0.18000 0.02000 O1 0.28100 0.70200 0.41700 1.00000 0.03400 O2 0.60900 0.04870 -0.02250 1.00000 0.01600 O3 0.44100 0.45930 0.65140 1.00000 0.01200 O4 0.44800 0.00600 0.19330 1.00000 0.01900 O5 0.11500 0.09180 -0.01300 1.00000 0.01800 O6 0.11900 0.52390 0.47500 1.00000 0.01700 O7 0.27100 0.07160 -0.17200 1.00000 0.01000 O8 0.05100 0.46300 0.31820 1.00000 0.02500 O9 0.04100 0.06030 -0.14850 1.00000 0.01700 O10 0.42400 0.24240 0.68600 1.00000 0.01300 O11 0.07700 0.27410 -0.17120 1.00000 0.01000 O12 0.22700 0.43000 0.67180 1.00000 0.01700 O13 0.17300 0.96970 0.20300 1.00000 0.01200 O14 -0.12100 0.74600 0.39800 1.00000 0.02800 O15 0.35900 0.44820 0.30910 1.00000 0.02000 O16 0.39600 0.40320 0.51780 1.00000 0.02000 O17 0.14200 0.70330 0.26430 1.00000 0.01700 O-H18 0.40500 0.72550 0.19270 1.00000 0.02100 O19 0.22800 0.78500 0.03300 1.00000 0.02600 O20 0.64700 0.77200 0.07000 1.00000 0.02900 Wat21 0.40700 0.87900 0.47300 1.00000 0.03200 Wat22 0.18200 0.01400 0.38780 1.00000 0.02900 Wat23 0.91700 0.98900 0.38900 1.00000 0.04100 Wat24 0.93600 0.21100 0.43900 1.00000 0.02900 Wat25 0.10600 0.30100 0.07500 1.00000 0.03500 Wat26 0.60600 0.04300 0.33800 1.00000 0.03900 Wat27 -0.15400 0.49200 0.13880 1.00000 0.02900 Wat28 0.11300 0.57000 0.05600 1.00000 0.04000 Wat29 0.34000 0.17300 0.45000 1.00000 0.03300 Wat30 0.24800 0.27000 0.22300 1.00000 0.06200 Wat31 0.88200 0.18000 0.19000 1.00000 0.06000 Wat32 0.33300 0.71700 0.67200 1.00000 0.07600 Wat33 0.50200 0.29500 0.10700 1.00000 0.09400 Wat34 0.58700 0.52600 0.08900 1.00000 0.07600