Calcium-beta Wyckoff R W G Crystal Structures 1 (1963) 7-83 Second edition. Interscience Publishers, New York, New York Sample at T = 450 C Hexagonal closest packed, hcp, structure _database_code_amcsd 0011166 CELL PARAMETERS: 3.9800 3.9800 6.5200 90.000 90.000 120.000 SPACE GROUP: P6_3/mmc X-RAY WAVELENGTH: 1.541838 Cell Volume: 89.443 Density (g/cm3): 1.488 MAX. ABS. INTENSITY / VOLUME**2: 27.96210188 RIR: 6.119 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 25.85 23.74 3.4468 1 0 0 6 27.36 27.03 3.2600 0 0 2 2 29.31 100.00 3.0472 1 0 1 12 37.99 15.15 2.3684 1 0 2 12 45.59 16.39 1.9900 1 1 0 6 49.59 18.16 1.8384 1 0 3 12 53.14 2.34 1.7234 2 0 0 6 53.98 17.61 1.6985 1 1 2 12 55.12 12.20 1.6662 2 0 1 12 56.45 2.47 1.6300 0 0 4 2 60.79 2.78 1.5236 2 0 2 12 63.09 2.40 1.4735 1 0 4 12 69.63 4.90 1.3504 2 0 3 12 72.56 1.39 1.3028 2 1 0 12 74.24 7.67 1.2775 2 1 1 24 75.38 4.83 1.2610 1 1 4 12 78.41 3.14 1.2196 1 0 5 12 79.18 2.02 1.2097 2 1 2 24 84.29 1.64 1.1489 3 0 0 6 87.25 4.42 1.1174 2 1 3 24 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.