data_global _chemical_name_mineral 'Leucophoenicite' loop_ _publ_author_name 'Moore P B' _journal_name_full 'American Mineralogist' _journal_volume 55 _journal_year 1970 _journal_page_first 1146 _journal_page_last 1166 _publ_section_title ; Edge-sharing silicate tetrahedra in the crystal structure of leucophoenicite ; _database_code_amcsd 206 _chemical_compound_source 'Franklin, New Jersey, USA' _chemical_formula_sum 'Mn7 Si3 O14 H2' _cell_length_a 10.842 _cell_length_b 4.826 _cell_length_c 11.324 _cell_angle_alpha 90.0 _cell_angle_beta 103.93 _cell_angle_gamma 90.0 _cell_volume 575.086 _exptl_crystal_density_diffrn 4.013 _symmetry_space_group_name_H-M 'P 1 21/a 1' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+x,1/2-y,z' '1/2-x,1/2+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 Mn1 0.0 0.0 0.0 1.0 0.00925 Mn2 0.3149 0.015 0.1396 1.0 0.01013 Mn3 0.3308 0.4942 0.411 1.0 0.00874 Mn4 0.0781 -0.0105 0.2967 1.0 0.01013 Si1 0.0246 0.4144 0.4381 0.5 0.00595 Si2 0.1287 0.5731 0.1439 1.0 0.00405 O1 0.4907 -0.2135 0.1458 1.0 0.00608 O2 0.3345 0.2137 -0.0265 1.0 0.00925 O3 0.2289 -0.2879 0.2614 1.0 0.00963 O4 0.4207 0.2348 0.3058 0.5 0.01596 O-H4 0.4207 0.2348 0.3058 0.5 0.01596 O5 0.1736 0.2626 0.4391 0.5 0.0114 O-H5 0.1736 0.2626 0.4391 0.5 0.0114 O6 0.129 0.239 0.145 1.0 0.01001 O7 0.5254 0.7708 0.4379 1.0 0.01507