data_global _chemical_name_mineral 'Wonesite' loop_ _publ_author_name 'Spear F S' 'Hazen R M' 'Rumble D' _journal_name_full 'American Mineralogist' _journal_volume 66 _journal_year 1981 _journal_page_first 100 _journal_page_last 105 _publ_section_title ; Wonesite: A new rock-forming silicate from the Post Pond Volcanics, Vermont ; _database_code_amcsd 0000804 _chemical_formula_sum 'Na.55 (Mg2.58 Fe.42) (Si3.2 Al.8) O12' _cell_length_a 5.312 _cell_length_b 9.163 _cell_length_c 9.825 _cell_angle_alpha 90 _cell_angle_beta 103.18 _cell_angle_gamma 90 _cell_volume 465.624 _exptl_crystal_density_diffrn 2.869 _symmetry_space_group_name_H-M 'C 1 2/m 1' loop_ _space_group_symop_operation_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_U_iso_or_equiv Na 0.00000 0.00000 0.00000 0.55000 0.03800 Mg1 0.00000 0.50000 0.50000 0.86000 0.01013 Fe1 0.00000 0.50000 0.50000 0.14000 0.01013 Mg2 0.00000 0.83000 0.50000 0.86000 0.01013 Fe2 0.00000 0.83000 0.50000 0.14000 0.01013 Si 0.58000 0.17000 0.22500 0.80000 0.01013 Al 0.58000 0.17000 0.22500 0.20000 0.01013 O1 0.82000 0.23000 0.15800 1.00000 0.02153 O2 0.52000 0.00000 0.15800 1.00000 0.02153 O3 0.63000 0.17000 0.39300 1.00000 0.01520 O4 0.13000 0.00000 0.39300 1.00000 0.01520