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 DAC _database_code_amcsd 0004423 CELL PARAMETERS: 9.9910 9.9910 8.3702 90.000 90.000 120.000 SPACE GROUP: P6_3 X-RAY WAVELENGTH: 1.541838 Cell Volume: 723.576 Density (g/cm3): 2.630 MAX. ABS. INTENSITY / VOLUME**2: 7.813352156 RIR: 0.967 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 17.76 5.66 4.9955 1 1 0 6 20.53 16.68 4.3262 2 0 0 6 20.71 7.73 4.2896 1 1 1 6 21.23 48.02 4.1851 0 0 2 1 23.14 76.80 3.8432 2 0 1 6 23.61 4.24 3.7675 1 0 2 6 27.27 10.13 3.2703 1 2 0 6 27.27 43.93 3.2703 2 1 0 6 29.32 1.61 3.0461 2 1 1 6 29.32 9.81 3.0461 1 2 1 6 29.70 100.00 3.0080 2 0 2 6 31.01 44.92 2.8842 3 0 0 6 33.75 1.66 2.6554 1 0 3 6 34.82 3.82 2.5769 1 2 2 6 34.82 20.97 2.5769 2 1 2 6 35.96 16.43 2.4978 2 2 0 6 36.90 1.99 2.4359 1 1 3 6 37.48 10.99 2.3998 1 3 0 6 37.48 1.73 2.3998 3 1 0 6 37.58 2.65 2.3935 2 2 1 6 37.89 1.97 2.3748 3 0 2 6 38.39 42.68 2.3447 2 0 3 6 39.05 16.37 2.3068 3 1 1 6 39.05 10.21 2.3068 1 3 1 6 41.76 4.48 2.1631 4 0 0 6 42.13 1.25 2.1448 2 2 2 6 42.59 3.55 2.1226 2 1 3 6 42.59 4.77 2.1226 1 2 3 6 43.20 1.20 2.0943 4 0 1 6 43.24 12.90 2.0926 0 0 4 1 43.47 4.60 2.0818 3 1 2 6 43.47 1.98 2.0818 1 3 2 6 45.71 3.68 1.9850 3 2 0 6 47.05 7.99 1.9314 2 3 1 6 47.05 1.73 1.9314 3 2 1 6 47.30 4.54 1.9216 4 0 2 6 48.20 2.86 1.8881 4 1 0 6 48.31 3.99 1.8838 2 0 4 6 49.49 2.30 1.8418 1 4 1 6 50.91 6.70 1.7935 3 2 2 6 51.87 1.19 1.7626 2 1 4 6 52.91 1.38 1.7305 5 0 0 6 53.22 1.46 1.7211 4 1 2 6 53.61 3.59 1.7095 4 0 3 6 54.12 5.74 1.6947 5 0 1 6 54.15 1.77 1.6937 3 0 4 6 56.26 2.46 1.6352 2 4 0 6 56.26 2.85 1.6352 4 2 0 6 56.93 9.87 1.6174 2 3 3 6 56.93 2.35 1.6174 3 2 3 6 57.42 1.79 1.6048 2 4 1 6 57.64 6.02 1.5992 5 0 2 6 58.11 1.18 1.5873 1 1 5 6 59.08 3.36 1.5637 1 4 3 6 59.08 5.60 1.5637 4 1 3 6 59.18 15.97 1.5612 2 0 5 6 59.48 3.42 1.5540 1 5 0 6 59.77 1.84 1.5472 3 3 2 6 60.60 1.56 1.5279 1 5 1 6 60.82 4.08 1.5230 2 4 2 6 61.67 1.12 1.5040 4 0 4 6 62.31 1.00 1.4902 1 2 5 6 63.23 7.30 1.4706 5 0 3 6 63.90 2.34 1.4568 1 5 2 6 65.25 11.31 1.4299 3 3 3 6 67.09 3.67 1.3950 0 0 6 1 67.62 13.59 1.3855 2 5 0 6 67.62 6.05 1.3855 5 2 0 6 68.32 2.54 1.3730 1 3 5 6 68.32 4.28 1.3730 3 1 5 6 69.84 1.32 1.3468 4 3 2 6 71.23 1.54 1.3239 4 0 5 6 71.76 4.57 1.3153 2 5 2 6 74.09 6.47 1.2797 2 3 5 6 74.09 1.75 1.2797 3 2 5 6 74.94 3.04 1.2673 4 3 3 6 75.74 3.34 1.2558 3 0 6 6 78.54 3.20 1.2179 2 2 6 6 79.47 1.09 1.2061 3 1 6 6 79.47 1.87 1.2061 1 3 6 6 79.69 5.91 1.2032 5 0 5 6 80.97 1.32 1.1874 6 0 4 6 81.13 5.69 1.1854 7 0 2 6 81.54 1.15 1.1806 3 3 5 6 85.11 1.13 1.1399 4 4 3 6 85.20 1.12 1.1389 1 5 5 6 86.02 3.38 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.