data_9007142 _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 = 400 C Locality: Langban, Sweden ; _chemical_formula_sum 'Mn1.9 Fe3.94 Mg1.248 Ca.1 Si7.812 H2 O24' _cell_length_a 9.67027 _cell_length_b 18.3656 _cell_length_c 5.34465 _cell_angle_alpha 90 _cell_angle_beta 101.9899 _cell_angle_gamma 90 _cell_volume 928.504 _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 0.08860 0.50000 0.15500 0.01267 FeM1 0.00000 0.08860 0.50000 0.68200 0.01267 MgM1 0.00000 0.08860 0.50000 0.16300 0.01267 MnM2 0.00000 0.17980 0.00000 0.21400 0.00469 FeM2 0.00000 0.17980 0.00000 0.41200 0.00469 MgM2 0.00000 0.17980 0.00000 0.37400 0.00469 MnM3 0.00000 0.00000 0.00000 0.07600 0.03268 FeM3 0.00000 0.00000 0.00000 0.75000 0.03268 MgM3 0.00000 0.00000 0.00000 0.17400 0.03268 MnM4 0.00000 0.25390 0.50000 0.54300 0.05193 CaM4 0.00000 0.25390 0.50000 0.05000 0.05193 FeM4 0.00000 0.25390 0.50000 0.40700 0.05193 SiT1 0.28170 0.08410 0.26670 0.95300 0.01241 FeT1 0.28170 0.08410 0.26670 0.04700 0.01241 SiT2 0.30100 0.16590 0.78570 1.00000 0.01229 H1 0.20470 0.00000 0.70700 1.00000 0.14565 O1 0.11400 0.08870 0.20800 1.00000 0.01659 O2 0.12390 0.17370 0.71190 1.00000 0.01570 O3 0.11220 0.00000 0.71350 1.00000 0.01229 O4 0.37450 0.24080 0.76850 1.00000 0.01874 O5 0.34710 0.12770 0.05530 1.00000 0.02102 O6 0.34660 0.12120 0.55310 1.00000 0.02052 O7 0.33430 0.00000 0.27060 1.00000 0.01900