data_global _amcsd_formula_title 'KNaCa2Si8O19*5H2O' loop_ _publ_author_name 'Cadoni M' 'Ferraris G' _journal_name_full 'European Journal of Mineralogy' _journal_volume 21 _journal_year 2009 _journal_page_first 485 _journal_page_last 493 _publ_section_title ; Two new members of the rhodesite mero-plesiotype series close to delhayelite and hydrodelhayelite: synthesis and crystal structure Note: Sample TRO3 ; _database_code_amcsd 0007280 _chemical_formula_sum 'K Na Ca2 Si8 O24 H10' _cell_length_a 6.5850 _cell_length_b 23.776 _cell_length_c 7.0250 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 1099.869 _exptl_crystal_density_diffrn 2.298 _symmetry_space_group_name_H-M 'P n 21 m' loop_ _space_group_symop_operation_xyz 'x,y,z' '-x,1/2+y,1/2+z' 'x,y,-z' '-x,1/2+y,1/2-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 K 0.05750 0.25250 0.00000 1.00000 0.04100 Na 0.49700 0.00180 0.23700 0.50000 0.06500 Ca1 0.02280 -0.00230 0.00000 1.00000 0.01600 Ca2 -0.01790 0.00950 0.50000 1.00000 0.01200 Si1 0.21330 0.11880 0.21580 1.00000 0.01400 Si2 0.21230 0.38880 0.22170 1.00000 0.01300 Si3 0.96070 0.18610 0.50000 1.00000 0.00600 Si4 0.95650 0.31960 0.50000 1.00000 0.01700 Si5 0.57440 0.11190 0.50000 1.00000 0.01600 Si6 0.57080 0.39490 0.50000 1.00000 0.01000 O1 0.09540 0.06120 0.24190 1.00000 0.01900 O2 0.14410 0.45180 0.24070 1.00000 0.03700 O3 0.09730 0.17260 0.31840 1.00000 0.02400 O4 0.05990 0.34240 0.30700 1.00000 0.03100 O5 0.26100 0.13660 0.00000 1.00000 0.02300 O6 0.23020 0.36700 0.00000 1.00000 0.00600 O7 0.42880 0.13180 0.32040 1.00000 0.02500 O8 0.44300 0.39230 0.30690 1.00000 0.03200 O9 0.73600 0.16140 0.50000 1.00000 0.06400 O10 0.73500 0.34280 0.50000 1.00000 0.02300 O11 0.94050 0.25390 0.50000 1.00000 0.03000 O12 0.68000 0.45310 0.50000 1.00000 0.04400 O13 0.65700 0.05140 0.50000 1.00000 0.05500 Wat1 0.70800 0.05280 0.00000 1.00000 0.06000 Wat2 0.66000 0.46910 0.00000 1.00000 0.06800 Wat3 0.45600 0.26030 0.20700 0.50000 0.05600 Wat4 0.69800 0.33150 0.00000 1.00000 0.08700 Wat5 0.75000 0.17300 0.00000 1.00000 0.07600