#------------------------------------------------------------------------------ #$Date: 2008-01-26 15:05:32 +0200 (Sat, 26 Jan 2008) $ #$Revision: 19 $ #$URL: file:///home/coder/svn-repositories/cod/cif/9/9009492.cif $ #------------------------------------------------------------------------------ # # This file is available in the Crystallography Open Database (COD), # http://www.crystallography.net/ # # All data on this site have been placed in the public domain by the # contributors. # data_9009492 _chemical_name 'Roedderite' loop_ _publ_author_name 'Alietti E' 'Brigatti M F' 'Capedri S' 'Poppi L' _journal_name_full "Mineralogical Magazine" _journal_volume 58 _journal_year 1994 _journal_page_first 655 _journal_page_last 662 _publ_section_title ; The roedderite-chayesite series from Spanish lamproites: crystal chemical characterization Locality: Cancarix, Albacete province, Spain ; _chemical_formula_sum '(K.89 Na.55) (Mg4.35 Fe.65) Si12 O30' _cell_length_a 10.124 _cell_length_b 10.124 _cell_length_c 14.305 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 120 _cell_volume 1269.763 _symmetry_space_group_name_H-M 'P 6/m c c' loop_ _symmetry_equiv_pos_as_xyz 'x,y,z' '-x,-x+y,1/2+z' 'x,x-y,1/2-z' '-x+y,-x,-z' 'x-y,x,z' '-y,-x,1/2+z' 'y,x,1/2-z' 'y,-x+y,-z' '-y,x-y,z' 'x-y,-y,1/2+z' '-x+y,y,1/2-z' 'x,y,-z' '-x,-y,z' 'x,x-y,1/2+z' '-x,-x+y,1/2-z' 'x-y,x,-z' '-x+y,-x,z' 'y,x,1/2+z' '-y,-x,1/2-z' '-y,x-y,-z' 'y,-x+y,z' '-x+y,y,1/2+z' 'x-y,-y,1/2-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_Uiso_or_equiv KC 0.00000 0.00000 0.25000 0.89000 0.02660 NaC 0.00000 0.00000 0.25000 0.11000 0.02660 NaB 0.33333 0.66667 -0.02020 0.11000 0.02153 MgA 0.33333 0.66667 0.25000 0.87000 0.01305 Fe3+A 0.33333 0.66667 0.25000 0.13000 0.01305 MgT2 0.50000 0.50000 0.25000 0.87000 0.01393 Fe3+T2 0.50000 0.50000 0.25000 0.13000 0.01393 SiT1 0.23814 0.35274 0.39066 1.00000 0.01254 O1 0.12990 0.39450 0.00000 1.00000 0.02419 O2 0.21930 0.27760 0.13327 1.00000 0.02191 O3 0.15500 0.49660 0.17245 1.00000 0.01697