Carbon Ownby P D, Yang X, Liu J Journal of the American Ceramic Society 75 (1992) 1876-1883 Calculated X-ray diffraction data for diamond polytypes Note: hexagonal, 8H structure Note: theoretically calculated structure values _database_code_amcsd 0014069 CELL PARAMETERS: 2.5221 2.5221 16.4743 90.000 90.000 120.000 SPACE GROUP: P6_3/mmc X-RAY WAVELENGTH: 1.541838 Cell Volume: 90.753 Density (g/cm3): 3.516 MAX. ABS. INTENSITY / VOLUME**2: 4.161034001 RIR: 0.385 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 41.34 9.25 2.1842 1 0 0 6 41.71 8.42 2.1653 1 0 1 12 42.83 100.00 2.1112 1 0 2 12 43.97 77.23 2.0593 0 0 8 2 44.65 95.78 2.0296 1 0 3 12 47.10 14.46 1.9296 1 0 4 12 50.11 1.43 1.8205 1 0 5 12 53.62 2.22 1.7093 1 0 6 12 61.93 1.80 1.4984 1 0 8 12 66.67 1.09 1.4030 1 0 9 12 71.77 18.02 1.3153 1 0 10 12 75.37 56.40 1.2610 1 1 0 6 77.24 28.22 1.2352 1 0 11 12 83.10 10.14 1.1623 1 0 12 12 89.39 11.63 1.0961 1 0 13 12 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.