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 = 200 K
_database_code_amcsd 0006203
CELL PARAMETERS: 9.9890 9.9890 8.3687 90.000 90.000 120.000
SPACE GROUP: P6_3
X-RAY WAVELENGTH: 1.541838
Cell Volume: 723.157
Density (g/cm3): 2.632
MAX. ABS. INTENSITY / VOLUME**2: 7.796287893
RIR: 0.964
RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
2-THETA INTENSITY D-SPACING H K L Multiplicity
17.76 6.39 4.9945 1 1 0 6
20.53 16.11 4.3254 2 0 0 6
20.71 6.75 4.2888 1 1 1 6
21.23 49.08 4.1844 0 0 2 1
23.15 77.70 3.8425 2 0 1 6
23.62 4.33 3.7668 1 0 2 6
27.28 10.79 3.2697 1 2 0 6
27.28 43.17 3.2697 2 1 0 6
29.33 9.38 3.0455 1 2 1 6
29.33 1.68 3.0455 2 1 1 6
29.71 100.00 3.0074 2 0 2 6
31.01 45.09 2.8836 3 0 0 6
34.82 3.94 2.5764 1 2 2 6
34.82 21.11 2.5764 2 1 2 6
35.96 16.76 2.4973 2 2 0 6
36.91 2.10 2.4354 1 1 3 6
37.48 10.74 2.3993 1 3 0 6
37.48 1.71 2.3993 3 1 0 6
37.59 2.65 2.3930 2 2 1 6
37.89 1.63 2.3744 3 0 2 6
38.40 44.95 2.3443 2 0 3 6
39.05 16.77 2.3064 3 1 1 6
39.05 9.53 2.3064 1 3 1 6
41.77 4.23 2.1627 4 0 0 6
42.60 4.65 2.1222 1 2 3 6
42.60 3.23 2.1222 2 1 3 6
43.21 1.06 2.0939 4 0 1 6
43.24 12.97 2.0922 0 0 4 1
43.48 4.74 2.0814 3 1 2 6
43.48 2.09 2.0814 1 3 2 6
44.56 1.14 2.0335 1 0 4 6
45.72 3.21 1.9846 3 2 0 6
47.06 8.31 1.9311 2 3 1 6
47.06 1.38 1.9311 3 2 1 6
47.31 4.65 1.9212 4 0 2 6
48.21 3.01 1.8877 4 1 0 6
48.32 4.38 1.8834 2 0 4 6
49.50 2.25 1.8415 1 4 1 6
50.93 6.87 1.7931 3 2 2 6
51.88 1.10 1.7623 1 2 4 6
52.92 1.37 1.7301 5 0 0 6
53.23 1.46 1.7207 4 1 2 6
53.62 3.29 1.7092 4 0 3 6
54.13 5.60 1.6943 5 0 1 6
54.16 1.57 1.6934 3 0 4 6
56.27 2.39 1.6348 2 4 0 6
56.27 2.88 1.6348 4 2 0 6
56.94 9.97 1.6171 2 3 3 6
56.94 2.18 1.6171 3 2 3 6
57.43 1.88 1.6045 2 4 1 6
57.65 6.50 1.5989 5 0 2 6
58.13 1.05 1.5870 1 1 5 6
59.09 3.26 1.5634 1 4 3 6
59.09 5.90 1.5634 4 1 3 6
59.19 16.18 1.5609 2 0 5 6
59.49 3.23 1.5537 1 5 0 6
59.78 1.66 1.5469 3 3 2 6
60.62 1.51 1.5276 1 5 1 6
60.83 4.08 1.5227 2 4 2 6
61.69 1.07 1.5037 4 0 4 6
62.32 1.05 1.4899 1 2 5 6
63.25 7.53 1.4703 5 0 3 6
63.91 2.40 1.4565 1 5 2 6
64.74 1.09 1.4399 2 3 4 6
65.27 10.79 1.4296 3 3 3 6
67.11 3.43 1.3948 0 0 6 1
67.63 13.97 1.3852 2 5 0 6
67.63 6.15 1.3852 5 2 0 6
68.33 2.36 1.3727 1 3 5 6
68.33 4.44 1.3727 3 1 5 6
69.85 1.25 1.3465 4 3 2 6
71.24 1.36 1.3236 4 0 5 6
71.78 4.40 1.3150 2 5 2 6
74.10 6.47 1.2795 2 3 5 6
74.10 1.42 1.2795 3 2 5 6
74.96 3.15 1.2670 4 3 3 6
75.76 3.37 1.2556 3 0 6 6
78.56 3.41 1.2177 2 2 6 6
79.48 1.17 1.2058 3 1 6 6
79.48 1.81 1.2058 1 3 6 6
79.71 5.66 1.2030 5 0 5 6
80.99 1.20 1.1872 6 0 4 6
81.15 5.72 1.1852 7 0 2 6
85.13 1.16 1.1397 4 4 3 6
85.22 1.16 1.1387 1 5 5 6
86.05 3.53 1.1299 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.