Fergusonite-(Y) Komkov A I Soviet Physics Crystallography 4 (1959) 796-800 The structure of natural fergusonite, and of a polymorphic modification Locality: Ural Mountains, Russia Sample: annealed at T = 1000 C for t = 15 min _database_code_amcsd 0015539 CELL PARAMETERS: 5.0500 10.8900 5.2700 90.000 94.500 90.000 SPACE GROUP: I2 X-RAY WAVELENGTH: 1.541838 Cell Volume: 288.928 Density (g/cm3): 5.940 MAX. ABS. INTENSITY / VOLUME**2: 104.9048596 RIR: 5.750 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 16.28 1.06 5.4450 0 2 0 1 28.72 100.00 3.1086 -1 2 1 2 29.92 2.09 2.9865 0 3 1 2 30.36 2.26 2.9444 1 3 0 2 30.36 85.90 2.9444 1 2 1 2 32.90 18.82 2.7225 0 4 0 1 34.13 16.05 2.6269 0 0 2 2 35.67 14.26 2.5172 2 0 0 2 40.82 1.55 2.2104 1 1 2 2 42.04 4.40 2.1490 1 4 1 2 45.37 3.69 1.9990 1 5 0 2 48.06 16.06 1.8932 -2 0 2 2 48.13 26.75 1.8904 0 4 2 2 48.31 2.15 1.8838 2 3 1 2 49.30 24.61 1.8483 2 4 0 2 52.27 11.94 1.7502 2 0 2 2 56.20 9.92 1.6367 -1 6 1 2 56.87 12.85 1.6191 -1 2 3 2 57.02 1.20 1.6152 -1 5 2 2 57.17 9.34 1.6113 1 6 1 2 58.94 9.84 1.5670 -3 2 1 2 59.47 7.19 1.5543 -2 4 2 2 59.72 9.40 1.5485 1 2 3 2 61.73 9.58 1.5027 3 2 1 2 62.24 2.20 1.4917 0 7 1 2 63.15 5.84 1.4722 2 4 2 2 68.99 1.72 1.3613 0 8 0 1 71.88 3.36 1.3134 0 0 4 2 74.00 1.01 1.2810 -1 8 1 2 75.54 2.83 1.2586 4 0 0 2 76.95 2.81 1.2391 -1 6 3 2 77.66 4.02 1.2295 -3 2 3 2 78.74 3.51 1.2153 -3 6 1 2 79.26 2.62 1.2086 0 8 2 2 79.42 3.42 1.2066 1 6 3 2 79.64 1.63 1.2038 -2 0 4 2 80.16 2.53 1.1974 2 8 0 2 81.21 2.37 1.1845 3 6 1 2 81.34 2.73 1.1830 0 4 4 2 82.31 1.47 1.1714 -4 0 2 2 84.88 2.41 1.1424 4 4 0 2 85.02 3.04 1.1409 3 2 3 2 86.16 1.30 1.1287 2 0 4 2 88.46 1.62 1.1052 -2 8 2 2 88.80 1.20 1.1019 4 0 2 2 88.89 2.71 1.1010 -2 4 4 2 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.