Nepheline Gatta G D, Angel R J American Mineralogist 92 (2007) 1446-1455 Elastic behavior and pressure-induced structural evolution of nepheline: Implications for the nature of the modulated superstructure Locality: intrusive aplite of Snipe River, Tambani, Nyasaland, Malawi Sample: P = .0001 GPa, in air after decompression _database_code_amcsd 0004428 CELL PARAMETERS: 9.9907 9.9907 8.3695 90.000 90.000 120.000 SPACE GROUP: P6_3 X-RAY WAVELENGTH: 1.541838 Cell Volume: 723.472 Density (g/cm3): 2.630 MAX. ABS. INTENSITY / VOLUME**2: 7.712235107 RIR: 0.955 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 17.76 6.05 4.9953 1 1 0 6 20.53 17.09 4.3261 2 0 0 6 20.71 7.49 4.2894 1 1 1 6 21.23 49.99 4.1848 0 0 2 1 23.14 79.69 3.8431 2 0 1 6 23.62 4.40 3.7672 1 0 2 6 27.27 10.62 3.2702 1 2 0 6 27.27 43.80 3.2702 2 1 0 6 29.32 9.63 3.0460 1 2 1 6 29.32 1.66 3.0460 2 1 1 6 29.70 100.00 3.0078 2 0 2 6 31.01 44.66 2.8841 3 0 0 6 33.76 1.12 2.6552 1 0 3 6 34.82 4.05 2.5768 1 2 2 6 34.82 20.62 2.5768 2 1 2 6 35.96 17.07 2.4977 2 2 0 6 36.90 1.99 2.4357 1 1 3 6 37.48 1.64 2.3997 3 1 0 6 37.48 10.77 2.3997 1 3 0 6 37.58 2.49 2.3934 2 2 1 6 37.89 1.72 2.3747 3 0 2 6 38.39 44.72 2.3446 2 0 3 6 39.05 9.64 2.3067 1 3 1 6 39.05 16.40 2.3067 3 1 1 6 41.76 4.39 2.1630 4 0 0 6 42.60 4.65 2.1224 1 2 3 6 42.60 3.35 2.1224 2 1 3 6 43.20 1.20 2.0942 4 0 1 6 43.24 12.79 2.0924 0 0 4 1 43.47 2.01 2.0817 1 3 2 6 43.47 4.79 2.0817 3 1 2 6 44.55 1.16 2.0338 1 0 4 6 45.71 3.45 1.9850 3 2 0 6 47.05 8.26 1.9314 2 3 1 6 47.05 1.64 1.9314 3 2 1 6 47.31 4.62 1.9215 4 0 2 6 48.20 2.94 1.8881 4 1 0 6 48.32 4.06 1.8836 2 0 4 6 49.49 2.09 1.8418 1 4 1 6 50.92 6.71 1.7934 3 2 2 6 51.88 1.06 1.7625 1 2 4 6 51.88 1.01 1.7625 2 1 4 6 52.91 1.50 1.7304 5 0 0 6 53.22 1.43 1.7210 4 1 2 6 53.61 3.28 1.7094 4 0 3 6 54.12 5.58 1.6946 5 0 1 6 54.15 1.52 1.6936 3 0 4 6 56.26 2.45 1.6351 2 4 0 6 56.26 2.69 1.6351 4 2 0 6 56.93 9.69 1.6174 2 3 3 6 56.93 2.05 1.6174 3 2 3 6 57.42 1.80 1.6048 2 4 1 6 57.64 5.96 1.5991 5 0 2 6 58.12 1.08 1.5872 1 1 5 6 59.08 3.14 1.5636 1 4 3 6 59.08 5.89 1.5636 4 1 3 6 59.18 16.00 1.5611 2 0 5 6 59.48 3.30 1.5540 1 5 0 6 59.77 1.74 1.5471 3 3 2 6 60.61 1.42 1.5279 1 5 1 6 60.82 3.91 1.5230 2 4 2 6 61.68 1.08 1.5039 4 0 4 6 63.23 7.12 1.4705 5 0 3 6 63.90 2.33 1.4568 1 5 2 6 65.26 10.52 1.4298 3 3 3 6 67.10 3.29 1.3949 0 0 6 1 67.62 13.38 1.3855 2 5 0 6 67.62 6.10 1.3855 5 2 0 6 68.32 2.32 1.3729 1 3 5 6 68.32 4.22 1.3729 3 1 5 6 69.84 1.23 1.3467 4 3 2 6 71.23 1.42 1.3238 4 0 5 6 71.77 4.44 1.3153 2 5 2 6 74.09 6.25 1.2796 2 3 5 6 74.09 1.53 1.2796 3 2 5 6 74.94 2.91 1.2672 4 3 3 6 75.75 3.20 1.2557 3 0 6 6 78.55 3.23 1.2179 2 2 6 6 79.47 1.83 1.2060 1 3 6 6 79.47 1.16 1.2060 3 1 6 6 79.70 5.43 1.2031 5 0 5 6 80.97 1.21 1.1874 6 0 4 6 81.14 5.46 1.1854 7 0 2 6 85.12 1.11 1.1398 4 4 3 6 85.21 1.12 1.1389 1 5 5 6 86.03 3.31 1.1301 7 0 3 6 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.