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 _database_code_amcsd 0004422 CELL PARAMETERS: 9.9995 9.9995 8.3766 90.000 90.000 120.000 SPACE GROUP: P6_3 X-RAY WAVELENGTH: 1.541838 Cell Volume: 725.362 Density (g/cm3): 2.623 MAX. ABS. INTENSITY / VOLUME**2: 7.721525157 RIR: 0.958 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 17.74 6.16 4.9998 1 1 0 6 20.51 16.75 4.3299 2 0 0 6 20.69 7.34 4.2932 1 1 1 6 21.21 49.73 4.1883 0 0 2 1 23.12 79.37 3.8464 2 0 1 6 23.60 4.34 3.7705 1 0 2 6 27.25 10.76 3.2731 1 2 0 6 27.25 43.33 3.2731 2 1 0 6 29.30 9.54 3.0486 1 2 1 6 29.30 1.65 3.0486 2 1 1 6 29.68 100.00 3.0104 2 0 2 6 30.98 44.48 2.8866 3 0 0 6 33.73 1.01 2.6575 1 0 3 6 34.79 4.01 2.5790 1 2 2 6 34.79 20.67 2.5790 2 1 2 6 35.92 17.05 2.4999 2 2 0 6 36.87 2.04 2.4378 1 1 3 6 37.44 1.63 2.4018 3 1 0 6 37.44 10.79 2.4018 1 3 0 6 37.55 2.50 2.3955 2 2 1 6 37.85 1.64 2.3768 3 0 2 6 38.36 44.61 2.3466 2 0 3 6 39.01 9.45 2.3088 1 3 1 6 39.01 16.45 2.3088 3 1 1 6 41.72 4.23 2.1650 4 0 0 6 42.56 4.58 2.1243 1 2 3 6 42.56 3.21 2.1243 2 1 3 6 43.16 1.12 2.0961 4 0 1 6 43.20 12.81 2.0942 0 0 4 1 43.43 4.68 2.0835 3 1 2 6 43.43 1.99 2.0835 1 3 2 6 44.51 1.12 2.0355 1 0 4 6 45.67 3.36 1.9867 3 2 0 6 47.01 8.20 1.9331 2 3 1 6 47.01 1.49 1.9331 3 2 1 6 47.26 4.54 1.9232 4 0 2 6 48.15 2.99 1.8897 4 1 0 6 48.27 4.10 1.8852 2 0 4 6 49.44 2.12 1.8434 1 4 1 6 50.87 6.68 1.7950 3 2 2 6 51.83 1.06 1.7640 1 2 4 6 52.86 1.43 1.7320 5 0 0 6 53.17 1.43 1.7225 4 1 2 6 53.56 3.31 1.7109 4 0 3 6 54.07 5.59 1.6961 5 0 1 6 54.10 1.52 1.6951 3 0 4 6 56.21 2.38 1.6366 2 4 0 6 56.21 2.73 1.6366 4 2 0 6 56.88 9.71 1.6188 2 3 3 6 56.88 2.06 1.6188 3 2 3 6 57.37 1.76 1.6062 2 4 1 6 57.59 6.14 1.6005 5 0 2 6 58.07 1.07 1.5885 1 1 5 6 59.02 3.22 1.5650 1 4 3 6 59.02 5.80 1.5650 4 1 3 6 59.13 16.00 1.5624 2 0 5 6 59.43 3.27 1.5553 1 5 0 6 59.72 1.69 1.5485 3 3 2 6 60.55 1.45 1.5292 1 5 1 6 60.76 3.94 1.5243 2 4 2 6 61.62 1.06 1.5052 4 0 4 6 62.25 1.01 1.4913 1 2 5 6 63.17 7.16 1.4718 5 0 3 6 63.84 2.34 1.4581 1 5 2 6 64.67 1.00 1.4413 2 3 4 6 65.19 10.50 1.4311 3 3 3 6 67.04 3.28 1.3961 0 0 6 1 67.55 13.45 1.3867 2 5 0 6 67.55 6.05 1.3867 5 2 0 6 68.26 2.29 1.3741 1 3 5 6 68.26 4.24 1.3741 3 1 5 6 69.77 1.23 1.3479 4 3 2 6 71.16 1.39 1.3249 4 0 5 6 71.69 4.37 1.3164 2 5 2 6 74.02 6.25 1.2807 2 3 5 6 74.02 1.45 1.2807 3 2 5 6 74.87 2.96 1.2683 4 3 3 6 75.67 3.18 1.2568 3 0 6 6 78.47 3.26 1.2189 2 2 6 6 79.39 1.82 1.2070 1 3 6 6 79.39 1.16 1.2070 3 1 6 6 79.62 5.46 1.2042 5 0 5 6 80.89 1.17 1.1884 6 0 4 6 81.05 5.37 1.1864 7 0 2 6 85.02 1.10 1.1408 4 4 3 6 85.12 1.11 1.1399 1 5 5 6 85.93 3.39 1.1311 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.