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: annealed
Note: T = 220 K
_database_code_amcsd 0006205
CELL PARAMETERS: 9.9751 9.9751 8.3658 90.000 90.000 120.000
SPACE GROUP: P6_3
X-RAY WAVELENGTH: 1.541838
Cell Volume: 720.896
Density (g/cm3): 2.640
MAX. ABS. INTENSITY / VOLUME**2: 7.807573065
RIR: 0.963
RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
2-THETA INTENSITY D-SPACING H K L Multiplicity
17.78 6.33 4.9875 1 1 0 6
20.56 16.32 4.3193 2 0 0 6
20.73 7.10 4.2840 1 1 1 6
21.24 49.39 4.1829 0 0 2 1
23.18 77.88 3.8380 2 0 1 6
23.63 4.44 3.7648 1 0 2 6
27.31 10.43 3.2651 1 2 0 6
27.31 44.24 3.2651 2 1 0 6
29.36 9.48 3.0417 1 2 1 6
29.36 1.76 3.0417 2 1 1 6
29.73 100.00 3.0048 2 0 2 6
31.06 45.74 2.8796 3 0 0 6
33.78 1.14 2.6538 1 0 3 6
34.86 4.01 2.5738 1 2 2 6
34.86 21.37 2.5738 2 1 2 6
36.01 16.80 2.4938 2 2 0 6
36.93 2.13 2.4340 1 1 3 6
37.54 10.87 2.3959 1 3 0 6
37.54 1.83 2.3959 3 1 0 6
37.64 2.65 2.3899 2 2 1 6
37.93 1.73 2.3719 3 0 2 6
38.42 45.35 2.3428 2 0 3 6
39.11 9.95 2.3033 1 3 1 6
39.11 16.70 2.3033 3 1 1 6
41.83 4.45 2.1597 4 0 0 6
42.19 1.02 2.1420 2 2 2 6
42.64 4.87 2.1205 1 2 3 6
42.64 3.37 2.1205 2 1 3 6
43.26 13.20 2.0914 0 0 4 1
43.27 1.18 2.0911 4 0 1 6
43.53 2.16 2.0790 1 3 2 6
43.53 4.95 2.0790 3 1 2 6
44.57 1.24 2.0327 1 0 4 6
45.78 3.32 1.9819 3 2 0 6
47.13 8.46 1.9285 2 3 1 6
47.13 1.63 1.9285 3 2 1 6
47.37 4.78 1.9190 4 0 2 6
48.28 3.01 1.8851 4 1 0 6
48.35 4.41 1.8824 2 0 4 6
49.57 2.34 1.8390 1 4 1 6
50.99 6.95 1.7910 3 2 2 6
51.92 1.09 1.7611 1 2 4 6
51.92 1.08 1.7611 2 1 4 6
53.00 1.46 1.7277 5 0 0 6
53.30 1.48 1.7186 4 1 2 6
53.68 3.24 1.7075 4 0 3 6
54.20 1.67 1.6922 3 0 4 6
54.21 5.72 1.6920 5 0 1 6
56.36 2.54 1.6326 2 4 0 6
56.36 2.88 1.6326 4 2 0 6
57.01 10.12 1.6154 2 3 3 6
57.01 2.21 1.6154 3 2 3 6
57.52 1.98 1.6023 2 4 1 6
57.73 6.47 1.5969 5 0 2 6
58.15 1.14 1.5863 1 1 5 6
59.16 3.22 1.5617 1 4 3 6
59.16 6.13 1.5617 4 1 3 6
59.22 16.52 1.5602 2 0 5 6
59.59 3.45 1.5516 1 5 0 6
59.87 1.77 1.5450 3 3 2 6
60.71 1.51 1.5255 1 5 1 6
60.92 4.22 1.5208 2 4 2 6
61.74 1.09 1.5024 4 0 4 6
62.36 1.09 1.4890 1 2 5 6
63.32 7.63 1.4687 5 0 3 6
64.00 2.40 1.4547 1 5 2 6
64.81 1.06 1.4386 2 3 4 6
65.35 11.11 1.4280 3 3 3 6
67.13 3.54 1.3943 0 0 6 1
67.74 14.30 1.3833 2 5 0 6
67.74 6.41 1.3833 5 2 0 6
68.39 2.53 1.3718 1 3 5 6
68.39 4.51 1.3718 3 1 5 6
69.96 1.06 1.3448 3 4 2 6
69.96 1.23 1.3448 4 3 2 6
71.30 1.45 1.3227 4 0 5 6
71.89 4.63 1.3133 2 5 2 6
74.17 1.63 1.2785 3 2 5 6
74.17 6.69 1.2785 2 3 5 6
75.06 3.18 1.2655 4 3 3 6
75.80 3.52 1.2549 3 0 6 6
78.61 3.48 1.2170 2 2 6 6
79.54 1.94 1.2051 1 3 6 6
79.54 1.23 1.2051 3 1 6 6
79.79 5.85 1.2019 5 0 5 6
81.09 1.36 1.1859 6 0 4 6
81.28 6.03 1.1837 7 0 2 6
83.85 1.02 1.1538 2 5 4 6
85.26 1.25 1.1383 4 4 3 6
85.32 1.21 1.1377 1 5 5 6
86.18 3.57 1.1285 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.