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 = 4.130 GPa
_database_code_amcsd 0004425
CELL PARAMETERS: 9.7178 9.7178 8.2030 90.000 90.000 120.000
SPACE GROUP: P6_3
X-RAY WAVELENGTH: 1.541838
Cell Volume: 670.871
Density (g/cm3): 2.836
MAX. ABS. INTENSITY / VOLUME**2: 7.082730830
RIR: 0.813
RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
2-THETA INTENSITY D-SPACING H K L Multiplicity
18.26 8.79 4.8589 1 1 0 6
21.11 13.07 4.2079 2 0 0 6
21.25 11.41 4.1805 1 1 1 6
21.67 49.93 4.1015 0 0 2 1
23.76 74.72 3.7441 2 0 1 6
24.14 7.48 3.6870 1 0 2 6
28.05 4.86 3.1809 1 2 0 6
28.05 55.18 3.1809 2 1 0 6
30.13 11.70 2.9657 1 2 1 6
30.13 1.83 2.9657 2 1 1 6
30.43 100.00 2.9371 2 0 2 6
31.90 67.43 2.8053 3 0 0 6
33.77 1.29 2.6544 3 0 1 6
34.49 4.07 2.6005 1 0 3 6
35.72 4.87 2.5136 1 2 2 6
35.72 34.01 2.5136 2 1 2 6
37.00 13.70 2.4295 2 2 0 6
37.75 4.76 2.3829 1 1 3 6
38.57 11.53 2.3341 1 3 0 6
38.57 5.28 2.3341 3 1 0 6
38.65 4.10 2.3294 2 2 1 6
38.89 2.63 2.3155 3 0 2 6
39.30 54.52 2.2928 2 0 3 6
40.17 16.24 2.2450 1 3 1 6
40.17 16.11 2.2450 3 1 1 6
42.99 6.22 2.1040 4 0 0 6
43.28 2.46 2.0903 2 2 2 6
43.65 6.38 2.0735 1 2 3 6
43.65 4.89 2.0735 2 1 3 6
44.16 12.40 2.0508 0 0 4 1
44.45 2.01 2.0380 4 0 1 6
44.67 3.55 2.0286 3 1 2 6
44.67 5.48 2.0286 1 3 2 6
45.53 2.45 1.9924 1 0 4 6
46.37 2.05 1.9581 3 0 3 6
47.07 3.35 1.9307 3 2 0 6
48.16 1.76 1.8894 1 1 4 6
48.43 7.68 1.8794 2 3 1 6
48.43 3.19 1.8794 3 2 1 6
48.64 6.82 1.8720 4 0 2 6
49.44 7.49 1.8435 2 0 4 6
49.64 1.15 1.8365 1 4 0 6
49.64 3.23 1.8365 4 1 0 6
50.96 4.90 1.7921 1 4 1 6
50.96 2.16 1.7921 4 1 1 6
51.48 1.19 1.7753 3 1 3 6
51.48 1.15 1.7753 1 3 3 6
52.38 7.98 1.7469 3 2 2 6
54.52 1.86 1.6832 5 0 0 6
55.08 2.07 1.6675 4 0 3 6
55.51 2.81 1.6556 3 0 4 6
55.75 5.16 1.6488 5 0 1 6
57.99 3.76 1.5904 2 4 0 6
57.99 3.27 1.5904 4 2 0 6
58.52 13.75 1.5772 2 3 3 6
58.52 6.50 1.5772 3 2 3 6
58.94 1.01 1.5671 2 2 4 6
59.17 3.21 1.5614 2 4 1 6
59.17 1.17 1.5614 4 2 1 6
59.35 8.51 1.5572 5 0 2 6
59.47 2.90 1.5544 1 1 5 6
60.05 1.05 1.5406 3 1 4 6
60.58 15.09 1.5285 2 0 5 6
60.75 1.83 1.5245 1 4 3 6
60.75 5.74 1.5245 4 1 3 6
61.33 4.56 1.5115 1 5 0 6
61.56 1.43 1.5064 3 3 2 6
62.65 7.42 1.4829 2 4 2 6
63.84 2.45 1.4581 1 2 5 6
65.07 12.24 1.4334 5 0 3 6
65.85 1.88 1.4183 1 5 2 6
66.52 1.12 1.4057 2 3 4 6
67.18 11.93 1.3935 3 3 3 6
68.22 2.29 1.3748 2 4 3 6
68.65 5.36 1.3672 0 0 6 1
69.68 1.11 1.3495 1 0 6 6
69.79 17.48 1.3476 2 5 0 6
69.79 7.70 1.3476 5 2 0 6
70.11 4.42 1.3422 1 3 5 6
70.11 4.24 1.3422 3 1 5 6
71.72 1.80 1.3161 1 1 6 6
72.04 3.94 1.3110 3 4 2 6
73.15 1.78 1.2938 4 0 5 6
74.05 5.26 1.2803 2 5 2 6
76.14 4.20 1.2502 3 2 5 6
76.14 6.06 1.2502 2 3 5 6
76.30 1.41 1.2480 6 0 3 6
77.29 3.25 1.2345 4 3 3 6
77.70 5.25 1.2290 3 0 6 6
78.01 1.19 1.2248 6 1 2 6
80.64 2.61 1.1915 2 2 6 6
80.79 1.07 1.1896 7 0 1 6
81.61 2.52 1.1797 1 3 6 6
82.02 6.37 1.1748 5 0 5 6
83.50 2.72 1.1577 6 0 4 6
83.86 7.90 1.1537 7 0 2 6
84.47 1.19 1.1469 4 3 4 6
84.52 1.89 1.1464 4 0 6 6
84.92 1.84 1.1419 2 4 5 6
86.40 1.41 1.1262 2 5 4 6
87.97 2.24 1.1101 4 4 3 6
88.93 3.07 1.1006 7 0 3 6
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XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.