data_global _chemical_name_mineral 'Altisite' loop_ _publ_author_name 'Ferraris G' 'Ivaldi G' 'Khomyakov A P' _journal_name_full 'European Journal of Mineralogy' _journal_volume 7 _journal_year 1995 _journal_page_first 537 _journal_page_last 546 _publ_section_title ; Altisite Na3K6Ti2[Al2Si8O26]Cl3 a new hyperalkaline aluminosilicate from Kola Peninsula (Russia) related to lemoynite: crystal structure and thermal evolution Sample: RT, T = 20 C, before heating ; _database_code_amcsd 0006594 _chemical_compound_source 'Kola Peninsula, Russia' _chemical_formula_sum 'K5.5 Na3.5 Ti2 Si8 Al2 O26 Cl3' _cell_length_a 10.363 _cell_length_b 16.310 _cell_length_c 9.132 _cell_angle_alpha 90 _cell_angle_beta 105.34 _cell_angle_gamma 90 _cell_volume 1488.505 _exptl_crystal_density_diffrn 2.660 _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 K1 0.20736 0.14143 0.10725 0.95000 0.01760 Na1 0.20736 0.14143 0.10725 0.05000 0.01760 K2 0.09920 0.00810 0.36360 0.42500 0.03600 Na2 0.09920 0.00810 0.36360 0.07500 0.03600 Na1 0.00000 0.38349 0.50000 1.00000 0.01430 Na2 0.00000 0.50000 0.00000 1.00000 0.03290 Ti 0.25000 0.25000 0.50000 1.00000 0.00460 Si1 0.72539 0.09782 0.26426 1.00000 0.00590 Si2 0.94853 0.21292 0.27675 1.00000 0.00630 Al 0.00000 0.31610 0.00000 1.00000 0.00690 O1 0.87550 0.12217 0.25270 1.00000 0.01150 O2 0.69060 0.14466 0.40310 1.00000 0.01070 O3 0.62190 0.11684 0.10220 1.00000 0.01220 O4 0.73080 0.00000 0.29700 1.00000 0.01200 O5 0.86840 0.26948 0.36910 1.00000 0.00870 O6 0.92850 0.25297 0.10960 1.00000 0.01250 O7 0.10450 0.19446 0.35430 1.00000 0.01170 Cl1 0.00000 0.00000 0.00000 1.00000 0.02090 Cl2 0.11781 0.50000 0.72409 1.00000 0.02060