data_global _chemical_name_mineral 'Tsepinite-Ca' loop_ _publ_author_name 'Pekov I V' 'Chukanov N V' 'Ferraris G' 'Gula A' 'Pushcharovsky D Y' 'Zadov A E' _journal_name_full 'Neues Jahrbuch fur Mineralogie, Monatshefte' _journal_volume 2003 _journal_year 2003 _journal_page_first 461 _journal_page_last 480 _publ_section_title ; Tsepinite-Ca,(Ca,K,Na,[])2(Ti,Nb)2(Si4O12)(OH,O)2*4H2O, a new mineral of the labuntsovite group from the Khibiny alkaline massif, Kola peninsula - novel disordered sites in the vuoriyarvite-type structure Kola Peninsula, Russia ; _database_code_amcsd 0014929 _chemical_compound_source 'Lovchorrite mine, Hackman Valley, Yukspor Mountian, Khibiny massif,' _chemical_formula_sum 'Na.7 K.555 O35.064 Ba.27 Ca1.105 Sr.34 Mn.025 Fe.005 Zn.015 (Ti3.2 Nb.8) Si8 H16.569' _cell_length_a 14.484 _cell_length_b 14.191 _cell_length_c 7.907 _cell_angle_alpha 90 _cell_angle_beta 117.26 _cell_angle_gamma 90 _cell_volume 1444.722 _exptl_crystal_density_diffrn 2.716 _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 0.41340 0.74010 0.00000 0.17500 0.04900 KA 0.41340 0.74010 0.00000 0.13880 0.04900 WatA 0.41340 0.74010 0.00000 0.04370 0.04900 BaA* 0.50000 0.65700 0.00000 0.08750 0.23000 WatA* 0.50000 0.65700 0.00000 0.91250 0.23000 CaB 0.43200 0.00000 0.70000 0.13000 0.15000 SrB 0.43200 0.00000 0.70000 0.10000 0.15000 WatB 0.43200 0.00000 0.70000 0.65000 0.15000 BaB*1 0.50000 0.82900 0.00000 0.01580 0.12000 WatB*1 0.50000 0.82900 0.00000 0.31750 0.12000 BaB*2 0.46200 0.90700 0.85100 0.00790 0.02000 WatB*2 0.46200 0.90700 0.85100 0.15870 0.02000 BaB*3 0.46200 0.84900 0.84700 0.00790 0.10000 WatB*3 0.46200 0.84900 0.84700 0.15870 0.10000 SrC 0.08600 0.00000 0.33000 0.07000 0.10000 WatC 0.08600 0.00000 0.33000 0.93000 0.10000 CaC* 0.25100 0.00000 0.50100 0.21000 0.01500 CaD 0.00000 0.00000 0.50000 0.42500 0.02400 MnD 0.00000 0.00000 0.50000 0.02500 0.02400 FeD 0.00000 0.00000 0.50000 0.00500 0.02400 ZnD 0.00000 0.00000 0.50000 0.01500 0.02400 TiM1 0.00000 0.75830 0.50000 0.80000 0.02700 NbM1 0.00000 0.75830 0.50000 0.20000 0.02700 TiM2 0.75000 0.75000 0.50000 0.80000 0.03300 NbM2 0.75000 0.75000 0.50000 0.20000 0.03300 Si1 0.20040 0.11140 0.79110 1.00000 0.01740 Si2 0.68870 0.88940 0.76480 1.00000 0.01710 O1 0.90010 0.76050 0.60200 0.39000 0.02300 O-H1 0.90010 0.76050 0.60200 0.61000 0.02300 O2 0.91940 0.86260 0.32600 1.00000 0.04000 O3 0.24820 0.86050 0.34200 1.00000 0.03700 O4 0.26940 0.83340 0.70900 1.00000 0.03700 O5 0.41900 0.83310 0.30800 1.00000 0.04400 O6 0.34000 0.00000 0.25400 1.00000 0.04900 O7 0.24180 0.86890 0.01400 1.00000 0.03700 O8 0.21500 0.00000 0.76200 1.00000 0.04500