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 = 6.108 GPa _database_code_amcsd 0004426 CELL PARAMETERS: 9.6189 9.6189 8.1423 90.000 90.000 120.000 SPACE GROUP: P6_3 X-RAY WAVELENGTH: 1.541838 Cell Volume: 652.422 Density (g/cm3): 2.917 MAX. ABS. INTENSITY / VOLUME**2: 6.904317168 RIR: 0.771 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 18.45 10.33 4.8095 1 1 0 6 21.33 11.49 4.1651 2 0 0 6 21.46 13.12 4.1410 1 1 1 6 21.83 50.59 4.0711 0 0 2 1 24.00 72.64 3.7081 2 0 1 6 24.33 8.42 3.6577 1 0 2 6 28.35 3.46 3.1485 1 2 0 6 28.35 56.83 3.1485 2 1 0 6 30.44 11.94 2.9366 1 2 1 6 30.44 1.78 2.9366 2 1 1 6 30.71 100.00 2.9114 2 0 2 6 32.24 74.90 2.7767 3 0 0 6 34.12 1.57 2.6281 3 0 1 6 34.76 5.49 2.5806 1 0 3 6 36.06 4.80 2.4906 1 2 2 6 36.06 38.91 2.4906 2 1 2 6 37.40 12.96 2.4047 2 2 0 6 38.07 6.39 2.3637 1 1 3 6 38.98 7.05 2.3104 3 1 0 6 38.98 11.21 2.3104 1 3 0 6 39.06 4.38 2.3062 2 2 1 6 39.27 2.44 2.2940 3 0 2 6 39.64 57.61 2.2739 2 0 3 6 40.59 15.84 2.2226 3 1 1 6 40.59 18.43 2.2226 1 3 1 6 43.45 6.64 2.0826 4 0 0 6 43.72 2.90 2.0705 2 2 2 6 44.05 6.23 2.0557 1 2 3 6 44.05 5.26 2.0557 2 1 3 6 44.51 12.11 2.0356 0 0 4 1 44.93 2.30 2.0176 4 0 1 6 45.12 7.25 2.0094 1 3 2 6 45.12 3.19 2.0094 3 1 2 6 45.89 3.10 1.9774 1 0 4 6 46.81 2.83 1.9409 3 0 3 6 47.58 3.19 1.9111 3 2 0 6 48.57 2.44 1.8746 1 1 4 6 48.96 7.42 1.8605 2 3 1 6 48.96 3.32 1.8605 3 2 1 6 49.14 6.85 1.8541 4 0 2 6 49.86 8.54 1.8288 2 0 4 6 50.19 1.46 1.8178 1 4 0 6 50.19 2.96 1.8178 4 1 0 6 51.51 5.69 1.7741 1 4 1 6 51.51 2.70 1.7741 4 1 1 6 51.98 1.41 1.7593 3 1 3 6 51.98 1.48 1.7593 1 3 3 6 52.93 1.23 1.7300 2 3 2 6 52.93 8.47 1.7300 3 2 2 6 55.13 2.04 1.6660 5 0 0 6 55.35 1.17 1.6599 1 4 2 6 55.63 1.65 1.6522 4 0 3 6 56.02 2.99 1.6417 3 0 4 6 56.37 4.65 1.6322 5 0 1 6 58.64 3.93 1.5743 2 4 0 6 58.64 3.29 1.5743 4 2 0 6 59.12 13.96 1.5626 2 3 3 6 59.12 9.07 1.5626 3 2 3 6 59.50 1.15 1.5537 2 2 4 6 59.84 3.69 1.5456 2 4 1 6 59.84 1.33 1.5456 4 2 1 6 59.97 3.75 1.5424 1 1 5 6 60.00 9.16 1.5419 5 0 2 6 60.63 1.05 1.5273 3 1 4 6 61.10 14.24 1.5167 2 0 5 6 61.38 1.26 1.5103 1 4 3 6 61.38 5.26 1.5103 4 1 3 6 62.03 4.65 1.4962 1 5 0 6 62.24 1.03 1.4917 3 3 2 6 63.34 9.02 1.4683 2 4 2 6 64.41 3.13 1.4464 1 2 5 6 65.77 14.02 1.4199 5 0 3 6 66.59 1.77 1.4043 1 5 2 6 67.19 1.09 1.3933 2 3 4 6 67.90 11.29 1.3803 3 3 3 6 68.96 3.58 1.3618 2 4 3 6 69.23 5.85 1.3570 0 0 6 1 69.30 1.33 1.3559 1 4 4 6 70.28 1.22 1.3394 1 0 6 6 70.61 18.15 1.3339 2 5 0 6 70.61 8.09 1.3339 5 2 0 6 70.79 4.13 1.3311 3 1 5 6 70.79 5.15 1.3311 1 3 5 6 72.35 2.21 1.3061 1 1 6 6 72.87 5.02 1.2980 3 4 2 6 73.88 1.84 1.2828 4 0 5 6 74.92 5.11 1.2676 2 5 2 6 76.92 5.03 1.2395 3 2 5 6 76.92 5.62 1.2395 2 3 5 6 77.17 1.88 1.2360 6 0 3 6 78.18 3.14 1.2227 4 3 3 6 78.44 5.69 1.2192 3 0 6 6 78.95 1.75 1.2127 6 1 2 6 81.43 2.30 1.1818 2 2 6 6 81.79 1.17 1.1775 7 0 1 6 82.42 2.54 1.1701 1 3 6 6 82.90 6.08 1.1646 5 0 5 6 84.46 2.98 1.1470 6 0 4 6 84.90 7.77 1.1422 7 0 2 6 85.38 2.25 1.1370 4 0 6 6 85.45 1.04 1.1363 4 3 4 6 85.86 2.24 1.1318 2 4 5 6 85.86 1.08 1.1318 4 2 5 6 87.41 1.56 1.1157 2 5 4 6 89.06 2.43 1.0993 4 4 3 6 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.