data_global _chemical_name_mineral 'Carpholite' loop_ _publ_author_name 'Naumova I S' 'Pobedimskaya E A' 'Belov N V' _journal_name_full 'Kristallografiya' _journal_volume 19 _journal_year 1974 _journal_page_first 1155 _journal_page_last 1160 _publ_section_title ; Crystal structure of carpholite MnAl2(Si2O6)(OH)4 ; _database_code_amcsd 0017756 _chemical_formula_sum 'Mn Al2 Si2 (O10 H4)' _cell_length_a 13.831 _cell_length_b 20.296 _cell_length_c 5.121 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 1437.536 _exptl_crystal_density_diffrn 3.041 _symmetry_space_group_name_H-M 'C c c a' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+x,1/2+y,z' 'x,-y,1/2+z' '1/2+x,1/2-y,1/2+z' '-x,y,1/2-z' '1/2-x,1/2+y,1/2-z' '-x,1/2+y,1/2+z' '1/2-x,+y,1/2+z' 'x,1/2-y,1/2-z' '1/2+x,-y,1/2-z' 'x,1/2+y,-z' '1/2+x,+y,-z' '-x,1/2-y,z' '1/2-x,-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_U_iso_or_equiv Mn 0.00000 0.87270 0.75000 0.00545 Al1 0.19330 0.75000 0.75000 0.00380 Al2 0.00000 0.96140 0.25000 0.00557 Si 0.19410 0.87940 0.41300 0.00317 O-H1 0.10350 0.80720 0.88720 0.01216 O2 0.20630 0.80000 0.43320 0.00887 O3 0.24480 0.91140 0.67090 0.00545 O4 0.08250 0.89930 0.39830 0.00836 O-H5 0.06870 0.96700 0.93120 0.00823