data_global _chemical_name_mineral 'Levyne-Ca' loop_ _publ_author_name 'Gatta G D' 'Comodi P' 'Zanazzi P F' 'Ballaran T B' _journal_name_full 'American Mineralogist' _journal_volume 90 _journal_year 2005 _journal_page_first 645 _journal_page_last 652 _publ_section_title ; Anomalous elastic behavior and high-pressure structural evolution of zeolite levyne P = .0001 GPa uncompressed ; _database_code_amcsd 0003750 _chemical_compound_source 'Beech Creek, Grant County, Oregon' _chemical_formula_sum 'Ca2 K.48 Na.3 (Si12.426 Al5.574) O61.56 H51.12' _cell_length_a 13.335 _cell_length_b 13.335 _cell_length_c 22.823 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 120 _cell_volume 3514.709 _exptl_crystal_density_diffrn 2.327 _symmetry_space_group_name_H-M 'R -3 m' loop_ _space_group_symop_operation_xyz 'x,y,z' '2/3+x,1/3+y,1/3+z' '1/3+x,2/3+y,2/3+z' 'x,x-y,z' '2/3+x,1/3+x-y,1/3+z' '1/3+x,2/3+x-y,2/3+z' 'y,x,-z' '2/3+y,1/3+x,1/3-z' '1/3+y,2/3+x,2/3-z' '-x+y,y,z' '2/3-x+y,1/3+y,1/3+z' '1/3-x+y,2/3+y,2/3+z' '-x,-x+y,-z' '2/3-x,1/3-x+y,1/3-z' '1/3-x,2/3-x+y,2/3-z' '-y,-x,z' '2/3-y,1/3-x,1/3+z' '1/3-y,2/3-x,2/3+z' 'x-y,-y,-z' '2/3+x-y,1/3-y,1/3-z' '1/3+x-y,2/3-y,2/3-z' 'y,-x+y,-z' '2/3+y,1/3-x+y,1/3-z' '1/3+y,2/3-x+y,2/3-z' '-x+y,-x,z' '2/3-x+y,1/3-x,1/3+z' '1/3-x+y,2/3-x,2/3+z' '-x,-y,-z' '2/3-x,1/3-y,1/3-z' '1/3-x,2/3-y,2/3-z' '-y,x-y,z' '2/3-y,1/3+x-y,1/3+z' '1/3-y,2/3+x-y,2/3+z' 'x-y,x,-z' '2/3+x-y,1/3+x,1/3-z' '1/3+x-y,2/3+x,2/3-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 Ca1 0.00000 0.00000 0.14030 0.77000 0.02300 Ca2 0.00000 0.00000 0.28440 0.23000 0.05900 K4 0.00000 0.00000 0.43100 0.24000 0.14000 Na5 0.00000 0.00000 0.50000 0.30000 0.00500 Si1 0.00020 0.23230 0.07008 0.63700 0.01490 Al1 0.00020 0.23230 0.07008 0.36300 0.01490 Si2 0.23910 0.00000 0.50000 0.79700 0.01340 Al2 0.23910 0.00000 0.50000 0.20300 0.01340 O1 0.03490 0.35000 0.10810 1.00000 0.03230 O2 0.09150 -0.09150 0.08350 1.00000 0.02800 O3 0.12880 -0.12880 -0.09190 1.00000 0.03000 O4 0.26300 0.00000 0.00000 1.00000 0.03300 O5 0.22250 -0.22250 0.17960 1.00000 0.03100 Wat1 0.15330 0.07660 0.21070 1.00000 0.05900 Wat2 0.12180 0.24300 0.28540 1.00000 0.15900 Wat3 0.15800 0.07900 0.34960 1.00000 0.17300 Wat4 0.21000 0.42100 0.28700 0.13000 0.04000