data_global _chemical_name_mineral 'Mendeleevite-(Ce)' loop_ _publ_author_name 'Sokolova E' 'Hawthorne F C' 'Pautov L A' 'Agakhanov A A' 'Karpenko V Y' _journal_name_full 'Mineralogical Magazine' _journal_volume 75 _journal_year 2011 _journal_page_first 2583 _journal_page_last 2596 _publ_section_title ; The crystal structure and crystal chemistry of mendeleevite-(Ce), (Cs,_)6(_,Cs)6(_,K)6(REE,Ca,_)30(Si70O175)(H2O,OH,F,_)35, a potential microporous material Tien-Shan mountains, northern Tajikistan ; _database_code_amcsd 0018578 _chemical_compound_source 'moraine of the Darai-Pioz glacier, Alai mountain ridge,' _chemical_formula_sum 'Ce11.4 La5.82 Nd3.18 Pr1.56 Sm.36 Gd.24 Ca4.68 Sr1.02 Cs6 K2.22 Si70 O203.11 F6.76 H46.02' _cell_length_a 21.9148 _cell_length_b 21.9148 _cell_length_c 21.9148 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 10524.769 _exptl_crystal_density_diffrn 3.070 _symmetry_space_group_name_H-M 'P m 3' loop_ _space_group_symop_operation_xyz 'x,y,z' 'z,x,-y' 'z,-x,y' '-z,x,y' '-z,-x,-y' 'y,-z,-x' '-y,-z,x' '-y,z,-x' 'y,z,x' 'x,-y,z' '-x,y,z' 'x,y,-z' '-x,-y,-z' '-z,-x,y' '-z,x,-y' 'z,-x,-y' 'z,x,y' '-y,z,x' 'y,z,-x' 'y,-z,x' '-y,-z,-x' '-x,y,-z' 'x,-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 CeM(1) 0.28869 0.29333 0.16693 0.50000 0.01081 LaM(1) 0.28869 0.29333 0.16693 0.26000 0.01081 NdM(1) 0.28869 0.29333 0.16693 0.14000 0.01081 PrM(1) 0.28869 0.29333 0.16693 0.07000 0.01081 SmM(1) 0.28869 0.29333 0.16693 0.02000 0.01081 GdM(1) 0.28869 0.29333 0.16693 0.01000 0.01081 CeM(2A) 0.40430 0.40992 0.11371 0.39000 0.01820 LaM(2A) 0.40430 0.40992 0.11371 0.20000 0.01820 NdM(2A) 0.40430 0.40992 0.11371 0.11000 0.01820 PrM(2A) 0.40430 0.40992 0.11371 0.05000 0.01820 SmM(2A) 0.40430 0.40992 0.11371 0.01000 0.01820 GdM(2A) 0.40430 0.40992 0.11371 0.01000 0.01820 CaM(2A) 0.40430 0.40992 0.11371 0.02000 0.01820 CeM(2B) 0.38440 0.41230 0.11930 0.05000 0.01820 LaM(2B) 0.38440 0.41230 0.11930 0.02000 0.01820 NdM(2B) 0.38440 0.41230 0.11930 0.01000 0.01820 PrM(2B) 0.38440 0.41230 0.11930 0.01000 0.01820 CaM(3) 0.30685 0.31416 0.00000 0.74000 0.02070 SrM(3) 0.30685 0.31416 0.00000 0.17000 0.02070 CeM(3) 0.30685 0.31416 0.00000 0.02000 0.02070 LaM(3) 0.30685 0.31416 0.00000 0.01000 0.02070 NdM(3) 0.30685 0.31416 0.00000 0.01000 0.02070 CsA(1) 0.23200 0.50000 0.24858 0.78000 0.04480 CsA(2) 0.50000 0.42000 0.39810 0.22000 0.04590 KB(1) 0.08920 0.37280 0.00000 0.35000 0.04400 KB(2) 0.07800 0.40400 0.00000 0.02000 0.04400 Si(1) 0.42893 0.50000 0.24647 1.00000 0.01320 Si(2) 0.23758 0.43094 0.07310 1.00000 0.01120 Si(3) 0.06963 0.26204 0.16567 1.00000 0.01110 Si(4) 0.42934 0.25606 0.07078 1.00000 0.01240 Si(5) 0.14260 0.37357 0.15483 1.00000 0.01160 Si(6) 0.36548 0.38330 0.27932 1.00000 0.02190 Si(7) 0.16716 0.16716 0.16716 1.00000 0.00980 O(1) 0.17040 0.40790 0.09570 1.00000 0.01610 O(2) 0.40350 0.50000 0.17850 1.00000 0.02000 O(3) 0.19400 0.34390 0.19730 1.00000 0.01520 O(4) 0.00000 0.25180 0.14320 1.00000 0.01500 O(5) 0.38610 0.30430 0.10370 1.00000 0.01780 O(6) 0.42570 0.19000 0.10370 1.00000 0.01950 O(7) 0.09610 0.32210 0.12880 1.00000 0.01930 O(8) 0.28910 0.38410 0.09410 1.00000 0.02030 O(9) 0.27060 0.23760 0.07620 1.00000 0.01920 O(10) 0.50000 0.27730 0.07190 1.00000 0.01700 O(11) 0.34900 0.37300 0.20980 1.00000 0.03300 O(12) 0.23420 0.43330 0.00000 1.00000 0.02200 O(13) 0.24770 0.50000 0.09920 1.00000 0.01400 O(14) 0.39920 0.32380 0.30790 1.00000 0.03040 O(15) 0.41110 0.44110 0.28550 1.00000 0.05000 O(16) 0.40770 0.24790 0.00000 1.00000 0.02200 O(17) 0.14130 0.10730 0.20310 1.00000 0.01660 O(18) 0.20950 0.20950 0.20950 1.00000 0.01400 O(19) 0.50000 0.51770 0.24750 0.50000 0.02900 F 0.27780 0.27780 0.27780 1.00000 0.01420 WatO(20) 0.37790 0.50000 0.05120 0.50000 0.02500 O-HO(20) 0.37790 0.50000 0.05120 0.50000 0.02500 WatO(21) 0.50000 0.43040 0.05670 0.50000 0.06000 O-HO(21) 0.50000 0.43040 0.05670 0.50000 0.06000 WatO(22) 0.50000 0.00000 0.00000 0.66667 0.04800 WatO(23) 0.50000 0.38490 0.16780 0.42000 0.05400 O-HO(23) 0.50000 0.38490 0.16780 0.35000 0.05400 FO(23) 0.50000 0.38490 0.16780 0.23000 0.05400 WatO(24) 0.18290 0.30360 0.00000 0.77000 0.04500 WatO(25) 0.00000 0.38700 0.40290 0.42000 0.05700 O-HO(25) 0.00000 0.38700 0.40290 0.35000 0.05700 FO(25) 0.00000 0.38700 0.40290 0.23000 0.05700 WatO(26) 0.50000 0.50000 0.50000 0.50000 0.03000 WatO(27) 0.00000 0.30500 0.00000 0.33333 0.06300