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 = 1.967 GPa
_database_code_amcsd 0004424
CELL PARAMETERS: 9.8499 9.8499 8.2838 90.000 90.000 120.000
SPACE GROUP: P6_3
X-RAY WAVELENGTH: 1.541838
Cell Volume: 696.023
Density (g/cm3): 2.734
MAX. ABS. INTENSITY / VOLUME**2: 7.349475582
RIR: 0.875
RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
2-THETA INTENSITY D-SPACING H K L Multiplicity
18.01 7.64 4.9250 1 1 0 6
20.83 14.59 4.2651 2 0 0 6
20.99 9.43 4.2333 1 1 1 6
21.45 49.08 4.1419 0 0 2 1
23.46 77.55 3.7920 2 0 1 6
23.88 5.90 3.7259 1 0 2 6
27.67 7.63 3.2241 1 2 0 6
27.67 50.56 3.2241 2 1 0 6
29.73 1.80 3.0046 2 1 1 6
29.73 10.76 3.0046 1 2 1 6
30.07 100.00 2.9714 2 0 2 6
31.46 56.43 2.8434 3 0 0 6
34.13 2.39 2.6271 1 0 3 6
35.28 4.59 2.5442 1 2 2 6
35.28 27.61 2.5442 2 1 2 6
36.49 14.64 2.4625 2 2 0 6
37.34 3.10 2.4085 1 1 3 6
38.03 3.21 2.3659 3 1 0 6
38.03 11.54 2.3659 1 3 0 6
38.13 3.47 2.3604 2 2 1 6
38.40 2.44 2.3442 3 0 2 6
38.85 49.19 2.3179 2 0 3 6
39.62 16.56 2.2749 3 1 1 6
39.62 12.64 2.2749 1 3 1 6
42.38 5.26 2.1326 4 0 0 6
42.72 1.85 2.1166 2 2 2 6
43.13 5.71 2.0972 1 2 3 6
43.13 4.04 2.0972 2 1 3 6
43.71 12.65 2.0710 0 0 4 1
43.84 1.49 2.0652 4 0 1 6
44.08 4.18 2.0543 3 1 2 6
44.08 3.55 2.0543 1 3 2 6
45.05 1.70 2.0125 1 0 4 6
45.81 1.10 1.9809 3 0 3 6
46.40 3.48 1.9570 3 2 0 6
47.64 1.16 1.9090 1 1 4 6
47.75 7.97 1.9046 2 3 1 6
47.75 2.41 1.9046 3 2 1 6
47.98 5.85 1.8960 4 0 2 6
48.89 5.73 1.8630 2 0 4 6
48.93 3.04 1.8615 4 1 0 6
50.23 3.65 1.8162 1 4 1 6
50.23 1.39 1.8162 4 1 1 6
51.66 7.27 1.7694 3 2 2 6
52.52 1.11 1.7425 2 1 4 6
53.73 1.67 1.7061 5 0 0 6
54.01 1.18 1.6979 4 1 2 6
54.36 2.79 1.6878 4 0 3 6
54.84 2.26 1.6740 3 0 4 6
54.95 5.65 1.6710 5 0 1 6
57.14 3.18 1.6121 2 4 0 6
57.14 3.21 1.6121 4 2 0 6
57.74 12.17 1.5966 2 3 3 6
57.74 4.12 1.5966 3 2 3 6
58.31 2.55 1.5824 2 4 1 6
58.51 7.43 1.5775 5 0 2 6
58.80 1.88 1.5703 1 1 5 6
59.30 1.01 1.5583 3 1 4 6
59.89 15.78 1.5443 2 0 5 6
59.93 2.62 1.5435 1 4 3 6
59.93 5.82 1.5435 4 1 3 6
60.42 3.92 1.5321 1 5 0 6
60.68 1.70 1.5261 3 3 2 6
61.56 1.15 1.5065 1 5 1 6
61.75 5.46 1.5023 2 4 2 6
63.09 1.70 1.4736 1 2 5 6
64.17 9.79 1.4514 5 0 3 6
64.89 2.15 1.4369 1 5 2 6
65.64 1.16 1.4224 2 3 4 6
66.23 11.85 1.4111 3 3 3 6
67.89 4.60 1.3806 0 0 6 1
68.72 15.51 1.3659 2 5 0 6
68.72 6.79 1.3659 5 2 0 6
69.23 4.29 1.3571 3 1 5 6
69.23 3.42 1.3571 1 3 5 6
70.89 1.15 1.3294 1 1 6 6
70.95 2.26 1.3283 3 4 2 6
72.21 1.60 1.3083 4 0 5 6
72.92 5.22 1.2972 2 5 2 6
75.13 2.87 1.2645 3 2 5 6
75.13 6.37 1.2645 2 3 5 6
76.13 3.28 1.2504 4 3 3 6
76.74 4.34 1.2420 3 0 6 6
79.61 2.94 1.2043 2 2 6 6
80.56 2.17 1.1924 1 3 6 6
80.88 6.32 1.1886 5 0 5 6
82.25 2.00 1.1721 6 0 4 6
82.51 6.94 1.1691 7 0 2 6
83.20 1.14 1.1612 4 3 4 6
83.39 1.06 1.1590 4 0 6 6
83.71 1.22 1.1554 2 4 5 6
85.08 1.03 1.1402 2 5 4 6
86.56 1.70 1.1245 4 4 3 6
87.50 3.38 1.1149 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.