data_global _chemical_name_mineral 'Ferroglaucophane' loop_ _publ_author_name 'Hawthorne F C' _journal_name_full 'The Canadian Mineralogist' _journal_volume 17 _journal_year 1979 _journal_page_first 1 _journal_page_last 10 _publ_section_title ; The crystal chemistry of the amphiboles. X. Refinement of the crystal structure of ferroglaucophane and an ideal polyhedral model for clinoamphiboles ; _database_code_amcsd 0005158 _chemical_formula_sum 'O24 Si7.92 Al1.902 Fe2.277 Mg1.031 Na1.72 Ca.15' _cell_length_a 9.587 _cell_length_b 17.832 _cell_length_c 5.315 _cell_angle_alpha 90 _cell_angle_beta 103.47 _cell_angle_gamma 90 _cell_volume 883.633 _exptl_crystal_density_diffrn 3.215 _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 O1 0.10890 0.09470 0.20160 1.00000 O2 0.11780 0.17300 0.74780 1.00000 O3 0.11290 0.00000 0.70770 1.00000 O4 0.36950 0.25200 0.80640 1.00000 O5 0.35500 0.13070 0.08840 1.00000 O6 0.33980 0.12240 0.57930 1.00000 O7 0.32880 0.00000 0.30220 1.00000 SiT1 0.28240 0.08732 0.29220 0.99000 AlT1 0.28240 0.08732 0.29220 0.01000 SiT2 0.29260 0.17268 0.80790 0.99000 AlT2 0.29260 0.17268 0.80790 0.01000 FeM1 0.00000 0.09176 0.50000 0.58500 MgM1 0.00000 0.09176 0.50000 0.34800 AlM1 0.00000 0.09176 0.50000 0.06700 FeM2 0.00000 0.18168 0.00000 0.15600 AlM2 0.00000 0.18168 0.00000 0.84400 FeM3 0.00000 0.00000 0.00000 0.79500 MgM3 0.00000 0.00000 0.00000 0.20500 NaM4 0.00000 0.27720 0.50000 0.86000 CaM4 0.00000 0.27720 0.50000 0.07500 MgM4 0.00000 0.27720 0.50000 0.06500 loop_ _atom_site_aniso_label _atom_site_aniso_U_11 _atom_site_aniso_U_22 _atom_site_aniso_U_33 _atom_site_aniso_U_12 _atom_site_aniso_U_13 _atom_site_aniso_U_23 O1 0.00749 0.00967 0.00744 -0.00084 0.00024 0.00047 O2 0.00793 0.00805 0.00582 -0.00084 0.00146 0.00000 O3 0.01233 0.01128 0.00947 0.00000 0.00244 0.00000 O4 0.01101 0.00805 0.00785 -0.00168 0.00317 -0.00047 O5 0.00837 0.01128 0.00785 -0.00168 0.00195 0.00327 O6 0.00969 0.01289 0.00636 0.00084 0.00122 -0.00280 O7 0.01321 0.00644 0.01218 0.00000 0.00146 0.00000 SiT1 0.00749 0.00483 0.00420 0.00000 0.00098 0.00000 AlT1 0.00749 0.00483 0.00420 0.00000 0.00098 0.00000 SiT2 0.00705 0.00483 0.00433 -0.00084 0.00098 0.00000 AlT2 0.00705 0.00483 0.00433 -0.00084 0.00098 0.00000 FeM1 0.01013 0.00644 0.00555 0.00000 0.00220 0.00000 MgM1 0.01013 0.00644 0.00555 0.00000 0.00220 0.00000 AlM1 0.01013 0.00644 0.00555 0.00000 0.00220 0.00000 FeM2 0.00837 0.00644 0.00677 0.00000 0.00146 0.00000 AlM2 0.00837 0.00644 0.00677 0.00000 0.00146 0.00000 FeM3 0.01101 0.00483 0.00650 0.00000 0.00146 0.00000 MgM3 0.01101 0.00483 0.00650 0.00000 0.00146 0.00000 NaM4 0.02158 0.01289 0.01651 0.00000 0.00977 0.00000 CaM4 0.02158 0.01289 0.01651 0.00000 0.00977 0.00000 MgM4 0.02158 0.01289 0.01651 0.00000 0.00977 0.00000