data_9007144 _chemical_name 'Manganogrunerite' loop_ _publ_author_name 'Reece J J' 'Redfern S A T' 'Welch M D' 'Henderson C M B' 'McCammon C A' _journal_name_full "Physics and Chemistry of Minerals" _journal_volume 29 _journal_year 2002 _journal_page_first 562 _journal_page_last 570 _publ_section_title ; Temperature-dependent Fe-Mn order-disorder behaviour in amphiboles Sample: BM40798, T = 500 C Locality: Langban, Sweden ; _chemical_formula_sum 'Mn1.898 Fe3.938 Mg1.252 Ca.1 Si7.812 H2 O24' _cell_length_a 9.68020 _cell_length_b 18.3852 _cell_length_c 5.34547 _cell_angle_alpha 90 _cell_angle_beta 101.9161 _cell_angle_gamma 90 _cell_volume 930.846 _symmetry_space_group_name_H-M 'C 1 2/m 1' loop_ _symmetry_equiv_pos_as_xyz 'x,y,z' '1/2+x,1/2+y,z' 'x,-y,z' '1/2+x,1/2-y,z' '-x,y,-z' '1/2-x,1/2+y,-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_occupancy _atom_site_Uiso_or_equiv MnM1 0.00000 0.08800 0.50000 0.19800 0.01646 FeM1 0.00000 0.08800 0.50000 0.65100 0.01646 MgM1 0.00000 0.08800 0.50000 0.15100 0.01646 MnM2 0.00000 0.17930 0.00000 0.22500 0.00595 FeM2 0.00000 0.17930 0.00000 0.39700 0.00595 MgM2 0.00000 0.17930 0.00000 0.37800 0.00595 MnM3 0.00000 0.00000 0.00000 0.11400 0.03483 FeM3 0.00000 0.00000 0.00000 0.69200 0.03483 MgM3 0.00000 0.00000 0.00000 0.19400 0.03483 MnM4 0.00000 0.25700 0.50000 0.46900 0.05826 CaM4 0.00000 0.25700 0.50000 0.05000 0.05826 FeM4 0.00000 0.25700 0.50000 0.48100 0.05826 SiT1 0.28130 0.08410 0.26690 0.95300 0.01444 FeT1 0.28130 0.08410 0.26690 0.04700 0.01444 SiT2 0.30100 0.16590 0.78490 1.00000 0.01317 H1 0.19880 0.00000 0.70600 1.00000 0.14945 O1 0.11260 0.08830 0.20900 1.00000 0.01887 O2 0.12410 0.17370 0.70990 1.00000 0.01824 O3 0.11480 0.00000 0.71460 1.00000 0.01735 O4 0.37620 0.24040 0.76700 1.00000 0.02280 O5 0.34650 0.12720 0.05430 1.00000 0.02330 O6 0.34710 0.12080 0.55290 1.00000 0.02267 O7 0.33450 0.00000 0.26910 1.00000 0.02166