data_global _chemical_name_mineral 'Ancylite-(Ce)' loop_ _publ_author_name 'Belovitskaya Y V' 'Pekov I V' 'Gobechiya E R' 'Yamnova N A' 'Kabalov Y K' 'Chukanov N V' 'Schneider J' _journal_name_full 'Crystallography Reports' _journal_volume 47 _journal_year 2002 _journal_page_first 223 _journal_page_last 228 _publ_section_title ; Crystal structures of two ancylite modifications Sample: Specimen 54 ; _database_code_amcsd 0012379 _chemical_compound_source 'Tulilukht Bay, Khibiny massif, Kola Peninsula, Russia' _chemical_formula_sum '(Sr.4 Ca.025 Ba.005 Ce.31 La.2 Nd.045 Pr.015) C O3.925 F.075 H1.425' _cell_length_a 5.0577 _cell_length_b 8.5665 _cell_length_c 7.3151 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 316.940 _exptl_crystal_density_diffrn 4.070 _symmetry_space_group_name_H-M 'P m c n' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2-x,y,z' '1/2+x,-y,-z' '1/2+x,1/2+y,1/2-z' '1/2-x,1/2-y,1/2+z' 'x,1/2-y,1/2+z' '-x,1/2+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_U_iso_or_equiv SrM 0.25000 0.34090 0.64820 0.40000 0.01216 CaM 0.25000 0.34090 0.64820 0.02500 0.01216 BaM 0.25000 0.34090 0.64820 0.00500 0.01216 CeM 0.25000 0.34090 0.64820 0.31000 0.01216 LaM 0.25000 0.34090 0.64820 0.20000 0.01216 NdM 0.25000 0.34090 0.64820 0.04500 0.01216 PrM 0.25000 0.34090 0.64820 0.01500 0.01216 C 0.75000 0.19610 0.81540 1.00000 0.04686 O1 0.75000 0.32860 0.73360 1.00000 0.03420 O2 0.52660 0.12230 0.85250 1.00000 0.01520 O-H3 0.25000 0.41830 0.97360 0.42500 0.03420 F3 0.25000 0.41830 0.97360 0.07500 0.03420 Wat3 0.25000 0.41830 0.97360 0.50000 0.03420