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 = 110 K
_database_code_amcsd 0006202
CELL PARAMETERS: 9.9820 9.9820 8.3670 90.000 90.000 120.000
SPACE GROUP: P6_3
X-RAY WAVELENGTH: 1.541838
Cell Volume: 721.997
Density (g/cm3): 2.636
MAX. ABS. INTENSITY / VOLUME**2: 7.898626881
RIR: 0.976
RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
2-THETA INTENSITY D-SPACING H K L Multiplicity
17.77 6.45 4.9910 1 1 0 6
20.55 15.46 4.3223 2 0 0 6
20.72 6.50 4.2863 1 1 1 6
21.24 48.52 4.1835 0 0 2 1
23.16 76.78 3.8402 2 0 1 6
23.63 4.30 3.7657 1 0 2 6
27.29 10.74 3.2674 1 2 0 6
27.29 42.60 3.2674 2 1 0 6
29.35 9.22 3.0435 1 2 1 6
29.35 1.69 3.0435 2 1 1 6
29.72 100.00 3.0061 2 0 2 6
31.04 45.34 2.8816 3 0 0 6
34.84 3.77 2.5751 1 2 2 6
34.84 21.24 2.5751 2 1 2 6
35.99 16.50 2.4955 2 2 0 6
36.92 2.14 2.4347 1 1 3 6
37.51 10.64 2.3976 1 3 0 6
37.51 1.76 2.3976 3 1 0 6
37.61 2.73 2.3914 2 2 1 6
37.91 1.58 2.3731 3 0 2 6
38.41 45.00 2.3435 2 0 3 6
39.08 9.43 2.3048 1 3 1 6
39.08 16.99 2.3048 3 1 1 6
41.80 4.22 2.1612 4 0 0 6
42.62 4.66 2.1213 1 2 3 6
42.62 3.20 2.1213 2 1 3 6
43.25 13.02 2.0917 0 0 4 1
43.51 4.74 2.0802 3 1 2 6
43.51 2.15 2.0802 1 3 2 6
44.57 1.14 2.0331 1 0 4 6
45.75 3.08 1.9832 3 2 0 6
47.09 8.43 1.9298 2 3 1 6
47.09 1.26 1.9298 3 2 1 6
47.34 4.64 1.9201 4 0 2 6
48.24 3.03 1.8864 4 1 0 6
48.34 4.62 1.8829 2 0 4 6
49.53 2.34 1.8402 1 4 1 6
50.96 7.02 1.7921 3 2 2 6
51.90 1.12 1.7617 1 2 4 6
52.96 1.29 1.7289 5 0 0 6
53.27 1.48 1.7197 4 1 2 6
53.65 3.28 1.7083 4 0 3 6
54.17 5.62 1.6932 5 0 1 6
54.18 1.58 1.6928 3 0 4 6
56.31 2.36 1.6337 2 4 0 6
56.31 3.01 1.6337 4 2 0 6
56.98 10.19 1.6163 2 3 3 6
56.98 2.28 1.6163 3 2 3 6
57.48 1.94 1.6034 2 4 1 6
57.69 6.80 1.5979 5 0 2 6
59.12 3.28 1.5626 1 4 3 6
59.12 5.94 1.5626 4 1 3 6
59.21 16.31 1.5605 2 0 5 6
59.54 3.15 1.5526 1 5 0 6
59.83 1.59 1.5459 3 3 2 6
60.66 1.59 1.5266 1 5 1 6
60.87 4.19 1.5218 2 4 2 6
61.72 1.09 1.5030 4 0 4 6
62.34 1.08 1.4894 1 2 5 6
63.29 7.87 1.4695 5 0 3 6
63.96 2.43 1.4556 1 5 2 6
64.78 1.15 1.4392 2 3 4 6
65.31 10.99 1.4288 3 3 3 6
67.12 3.55 1.3945 0 0 6 1
67.69 14.40 1.3843 2 5 0 6
67.69 6.21 1.3843 5 2 0 6
68.36 2.40 1.3722 1 3 5 6
68.36 4.59 1.3722 3 1 5 6
69.91 1.03 1.3456 3 4 2 6
69.91 1.28 1.3456 4 3 2 6
71.27 1.33 1.3231 4 0 5 6
71.83 4.41 1.3142 2 5 2 6
74.14 6.72 1.2789 2 3 5 6
74.14 1.36 1.2789 3 2 5 6
75.01 3.35 1.2663 4 3 3 6
75.78 3.49 1.2552 3 0 6 6
78.59 3.54 1.2173 2 2 6 6
79.51 1.77 1.2054 1 3 6 6
79.51 1.17 1.2054 3 1 6 6
79.75 5.86 1.2024 5 0 5 6
81.04 1.20 1.1865 6 0 4 6
81.22 5.96 1.1844 7 0 2 6
83.80 1.04 1.1544 2 5 4 6
85.20 1.19 1.1390 4 4 3 6
85.27 1.19 1.1382 1 5 5 6
86.11 3.67 1.1292 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.