Sodium Wyckoff R W G Crystal Structures 1 (1963) 7-83 Second edition. Interscience Publishers, New York, New York Sample at T = 5 K Hexagonal closest packed, hcp, structure _database_code_amcsd 0011184 CELL PARAMETERS: 3.7670 3.7670 6.1540 90.000 90.000 120.000 SPACE GROUP: P6_3/mmc X-RAY WAVELENGTH: 1.541838 Cell Volume: 75.627 Density (g/cm3): 1.009 MAX. ABS. INTENSITY / VOLUME**2: 10.95395146 RIR: 3.533 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 27.34 23.70 3.2623 1 0 0 6 29.02 26.82 3.0770 0 0 2 2 31.03 100.00 2.8824 1 0 1 12 40.29 15.03 2.2384 1 0 2 12 48.32 16.00 1.8835 1 1 0 6 52.71 17.30 1.7366 1 0 3 12 56.41 2.21 1.6312 2 0 0 6 57.36 16.52 1.6064 1 1 2 12 58.54 11.40 1.5767 2 0 1 12 60.14 2.27 1.5385 0 0 4 2 64.68 2.51 1.4412 2 0 2 12 67.29 2.12 1.3915 1 0 4 12 74.29 4.17 1.2767 2 0 3 12 79.23 2.12 1.2090 2 1 1 24 80.63 3.95 1.1915 1 1 4 12 84.05 2.51 1.1516 1 0 5 12 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.