Terbium Wyckoff R W G Crystal Structures 1 (1963) 7-83 Second edition. Interscience Publishers, New York, New York Hexagonal closest packed, hcp, structure _database_code_amcsd 0011194 CELL PARAMETERS: 3.6010 3.6010 5.6936 90.000 90.000 120.000 SPACE GROUP: P6_3/mmc X-RAY WAVELENGTH: 1.541838 Cell Volume: 63.939 Density (g/cm3): 8.254 MAX. ABS. INTENSITY / VOLUME**2: 542.6768993 RIR: 21.409 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 28.62 24.02 3.1186 1 0 0 6 31.42 24.90 2.8468 0 0 2 2 32.74 100.00 2.7351 1 0 1 12 43.02 14.80 2.1025 1 0 2 12 50.70 17.22 1.8005 1 1 0 6 56.79 17.37 1.6212 1 0 3 12 59.26 2.48 1.5593 2 0 0 6 60.88 18.02 1.5217 1 1 2 12 61.68 12.89 1.5039 2 0 1 12 65.59 2.29 1.4234 0 0 4 2 68.63 2.91 1.3676 2 0 2 12 73.08 2.32 1.2949 1 0 4 12 79.56 5.19 1.2048 2 0 3 12 83.81 2.92 1.1542 2 1 1 24 87.32 5.17 1.1166 1 1 4 12 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.