Erbium Wyckoff R W G Crystal Structures 1 (1963) 7-83 Second edition. Interscience Publishers, New York, New York Sample at 293 K Hexagonal closest packed, hcp, structure _database_code_amcsd 0011174 CELL PARAMETERS: 3.5588 3.5588 5.5874 90.000 90.000 120.000 SPACE GROUP: P6_3/mmc X-RAY WAVELENGTH: 1.541838 Cell Volume: 61.284 Density (g/cm3): 9.063 MAX. ABS. INTENSITY / VOLUME**2: 636.8017251 RIR: 22.879 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 28.97 24.10 3.0820 1 0 0 6 32.04 24.52 2.7937 0 0 2 2 33.20 100.00 2.6987 1 0 1 12 43.73 14.72 2.0699 1 0 2 12 51.35 17.36 1.7794 1 1 0 6 57.85 17.17 1.5940 1 0 3 12 60.04 2.50 1.5410 2 0 0 6 61.82 18.03 1.5008 1 1 2 12 62.52 12.97 1.4855 2 0 1 12 66.99 2.24 1.3968 0 0 4 2 69.69 2.92 1.3493 2 0 2 12 74.59 2.29 1.2723 1 0 4 12 80.98 5.19 1.1873 2 0 3 12 85.07 2.96 1.1404 2 1 1 24 89.12 5.18 1.0987 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.