data_global _chemical_name_mineral 'Winchite' loop_ _publ_author_name 'Ghose S' 'Kersten M' 'Langer K' 'Rossi G' 'Ungaretti L' _journal_name_full 'Physics and Chemistry of Minerals' _journal_volume 13 _journal_year 1986 _journal_page_first 291 _journal_page_last 305 _publ_section_title ; Crystal field spectra and Jahn Teller effect of Mn3+ in clinopyroxene and clinoamphiboles from India ; _database_code_amcsd 0007426 _chemical_formula_sum 'Na2.24 K.169 Mg3.37 Al.23 Fe1.31 Mn.06 Li.13 Ca.27 Si7.9 O24 H2' _cell_length_a 9.7573 _cell_length_b 17.9026 _cell_length_c 5.2886 _cell_angle_alpha 90 _cell_angle_beta 103.814 _cell_angle_gamma 90 _cell_volume 897.098 _exptl_crystal_density_diffrn 3.118 _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 NaA 0.00000 0.50000 0.00000 0.17000 0.05003 KA 0.00000 0.50000 0.00000 0.05700 0.05003 NaAM 0.04650 0.50000 0.10320 0.08500 0.03154 KAM 0.04650 0.50000 0.10320 0.02800 0.03154 NaA2 0.00000 0.46180 0.00000 0.08500 0.02761 KA2 0.00000 0.46180 0.00000 0.02800 0.02761 MgM1 0.00000 0.08844 0.50000 0.93500 0.00621 AlM1 0.00000 0.08844 0.50000 0.06500 0.00621 MgM2 0.00000 0.18107 0.00000 0.31500 0.00532 FeM2 0.00000 0.18107 0.00000 0.65500 0.00532 MnM2 0.00000 0.18107 0.00000 0.03000 0.00532 MgM3 0.00000 0.00000 0.00000 0.87000 0.00557 LiM3 0.00000 0.00000 0.00000 0.13000 0.00557 CaM4 0.00000 0.27686 0.50000 0.13500 0.01279 NaM4 0.00000 0.27686 0.50000 0.86500 0.01279 SiT1 0.28098 0.08571 0.29319 0.98750 0.00456 AlT1 0.28098 0.08571 0.29319 0.01250 0.00456 SiT2 0.28881 0.17130 0.80189 0.98750 0.00456 AlT2 0.28881 0.17130 0.80189 0.01250 0.00456 O1 0.11121 0.08809 0.21343 1.00000 0.00633 O2 0.11810 0.16971 0.73248 1.00000 0.00671 O3 0.10901 0.00000 0.70951 1.00000 0.00621 O4 0.36341 0.25030 0.79915 1.00000 0.00937 O5 0.34935 0.13018 0.08530 1.00000 0.00887 O6 0.34224 0.11969 0.58283 1.00000 0.00836 O7 0.33651 0.00000 0.29600 1.00000 0.00975 H 0.18440 0.00000 0.74570 1.00000 0.02622