Nepheline
Angel R J, Gatta G C, Boffa Ballaran T, Carpenter M A
The Canadian Mineralogist 46 (2008) 1465-1476
The mechanism of coupling in the modulated structure of nepheline
Locality: Snipe River, Tambani, Malawi
Note: natural sample
Note: T = 290 K
_database_code_amcsd 0006204
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): 2.624
MAX. ABS. INTENSITY / VOLUME**2: 7.731191952
RIR: 0.959
RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
2-THETA INTENSITY D-SPACING H K L Multiplicity
17.74 6.19 4.9998 1 1 0 6
20.51 16.84 4.3299 2 0 0 6
20.69 6.94 4.2932 1 1 1 6
21.21 49.61 4.1883 0 0 2 1
23.12 78.36 3.8464 2 0 1 6
23.60 4.30 3.7705 1 0 2 6
27.25 10.74 3.2731 1 2 0 6
27.25 43.37 3.2731 2 1 0 6
29.30 9.46 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 44.44 2.8866 3 0 0 6
33.73 1.02 2.6575 1 0 3 6
34.79 4.02 2.5790 1 2 2 6
34.79 20.70 2.5790 2 1 2 6
35.92 17.08 2.4999 2 2 0 6
36.87 2.06 2.4378 1 1 3 6
37.44 1.62 2.4018 3 1 0 6
37.44 10.78 2.4018 1 3 0 6
37.55 2.51 2.3955 2 2 1 6
37.85 1.57 2.3768 3 0 2 6
38.36 44.69 2.3466 2 0 3 6
39.01 9.50 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 3.22 2.1243 2 1 3 6
43.16 1.14 2.0961 4 0 1 6
43.20 12.82 2.0942 0 0 4 1
43.43 4.74 2.0835 3 1 2 6
43.43 2.01 2.0835 1 3 2 6
44.51 1.12 2.0355 1 0 4 6
45.67 3.37 1.9867 3 2 0 6
47.01 8.20 1.9331 2 3 1 6
47.01 1.47 1.9331 3 2 1 6
47.26 4.52 1.9232 4 0 2 6
48.15 3.00 1.8897 4 1 0 6
48.27 4.09 1.8852 2 0 4 6
49.44 2.13 1.8434 1 4 1 6
50.87 6.67 1.7950 3 2 2 6
51.83 1.04 1.7640 1 2 4 6
51.83 1.00 1.7640 2 1 4 6
52.86 1.44 1.7320 5 0 0 6
53.17 1.44 1.7225 4 1 2 6
53.56 3.32 1.7109 4 0 3 6
54.07 5.58 1.6961 5 0 1 6
54.10 1.53 1.6951 3 0 4 6
56.21 2.39 1.6366 2 4 0 6
56.21 2.72 1.6366 4 2 0 6
56.88 9.74 1.6188 2 3 3 6
56.88 2.07 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 1.06 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 16.04 1.5624 2 0 5 6
59.43 3.28 1.5553 1 5 0 6
59.72 1.68 1.5485 3 3 2 6
60.55 1.46 1.5292 1 5 1 6
60.76 3.95 1.5243 2 4 2 6
61.62 1.05 1.5052 4 0 4 6
62.25 1.01 1.4913 1 2 5 6
63.17 7.19 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 10.54 1.4311 3 3 3 6
67.04 3.28 1.3961 0 0 6 1
67.55 13.48 1.3867 2 5 0 6
67.55 6.06 1.3867 5 2 0 6
68.26 2.30 1.3741 1 3 5 6
68.26 4.25 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 4.35 1.3164 2 5 2 6
74.02 6.28 1.2807 2 3 5 6
74.02 1.44 1.2807 3 2 5 6
74.87 2.97 1.2683 4 3 3 6
75.67 3.17 1.2568 3 0 6 6
78.47 3.27 1.2189 2 2 6 6
79.39 1.81 1.2070 1 3 6 6
79.39 1.17 1.2070 3 1 6 6
79.62 5.47 1.2042 5 0 5 6
80.89 1.16 1.1884 6 0 4 6
81.05 5.38 1.1864 7 0 2 6
85.02 1.11 1.1408 4 4 3 6
85.12 1.12 1.1399 1 5 5 6
85.93 3.40 1.1311 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.