Fluor-dravite
Clark C M, Hawthorne F C, Ottolini L
The Canadian Mineralogist 49 (2011) 57-62
Fluor-dravite, NaMg3Al6Si6O18(BO3)3(OH)3F, a new mineral species of the tourmaline
group from the Crabtree Emerald mine, Mitchell County, North Carolina:
Description and crystal structure
Locality: the Crabtree Emerald mine, Mitchell County, North Carolina, USA
_database_code_amcsd 0018741
CELL PARAMETERS: 15.9550 15.9550 7.1530 90.000 90.000 120.000
SPACE GROUP: R3m
X-RAY WAVELENGTH: 1.541838
Cell Volume: 1576.930
Density (g/cm3): 3.107
MAX. ABS. INTENSITY / VOLUME**2: 8.162610523
RIR: 0.856
RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
2-THETA INTENSITY D-SPACING H K L Multiplicity
13.94 33.11 6.3523 1 0 1 3
17.85 17.25 4.9693 0 2 1 3
19.27 14.77 4.6058 3 0 0 3
21.06 57.37 4.2179 2 1 1 6
22.29 68.20 3.9887 2 2 0 6
25.73 49.55 3.4624 0 1 2 3
26.38 7.50 3.3780 1 3 1 6
28.70 2.13 3.1106 4 0 1 3
29.63 10.87 3.0152 4 1 0 6
30.29 65.33 2.9509 1 2 2 6
30.85 6.40 2.8981 3 2 1 6
34.30 3.90 2.6147 3 1 2 6
34.80 100.00 2.5778 0 5 1 3
36.15 2.68 2.4847 0 4 2 3
36.64 2.63 2.4529 2 4 1 6
37.73 6.93 2.3843 0 0 3 1
37.93 12.29 2.3723 2 3 2 6
38.39 16.02 2.3446 5 1 1 6
39.12 2.62 2.3029 6 0 0 3
40.78 1.23 2.2126 5 2 0 6
41.29 11.76 2.1868 5 0 2 3
41.72 10.86 2.1650 4 3 1 6
42.70 4.74 2.1174 0 3 3 3
42.70 5.48 2.1174 3 0 3 3
42.88 5.94 2.1090 4 2 2 6
44.26 12.39 2.0466 2 2 3 6
44.43 38.64 2.0389 1 5 2 6
44.84 6.36 2.0213 1 6 1 6
45.48 4.45 1.9944 4 4 0 6
47.41 28.77 1.9175 3 4 2 6
47.80 1.94 1.9028 3 5 1 6
48.69 6.42 1.8702 1 4 3 6
49.23 7.20 1.8509 6 2 1 6
49.82 1.18 1.8302 7 1 0 6
51.48 3.67 1.7752 3 3 3 6
51.53 2.10 1.7735 1 0 4 3
52.89 1.78 1.7312 0 2 4 3
52.99 1.06 1.7282 5 3 2 6
54.31 2.87 1.6890 2 6 2 6
55.47 15.23 1.6564 0 6 3 3
55.47 4.33 1.6564 6 0 3 3
55.97 14.09 1.6429 2 7 1 6
57.79 17.85 1.5955 5 5 0 6
58.08 3.50 1.5881 4 0 4 3
58.18 2.60 1.5857 4 5 2 6
58.51 1.27 1.5774 8 1 1 6
59.34 1.79 1.5575 3 2 4 6
59.76 3.59 1.5474 4 6 1 6
60.28 3.78 1.5353 9 0 0 3
60.66 5.47 1.5266 7 2 2 6
60.99 1.66 1.5191 7 3 1 6
61.51 3.61 1.5076 8 2 0 6
61.79 14.43 1.5013 0 5 4 3
63.00 2.74 1.4754 2 4 4 6
63.09 1.49 1.4736 1 8 2 6
64.15 3.55 1.4518 1 7 3 6
64.20 16.61 1.4508 5 1 4 6
64.28 4.94 1.4491 6 4 2 6
65.10 4.23 1.4328 7 4 0 6
65.61 3.88 1.4230 0 1 5 3
65.78 1.51 1.4196 1 9 1 6
65.78 6.02 1.4196 6 5 1 6
66.50 1.16 1.4060 3 6 3 6
66.50 3.84 1.4060 6 3 3 6
66.55 10.32 1.4051 4 3 4 6
68.11 1.37 1.3767 3 8 1 6
69.26 10.14 1.3567 10 0 1 3
70.09 3.05 1.3425 5 6 2 6
70.88 3.38 1.3296 6 6 0 6
71.10 4.23 1.3260 5 5 3 6
71.14 2.54 1.3253 3 5 4 6
71.36 2.59 1.3217 0 4 5 3
72.00 10.06 1.3115 10 1 0 6
72.27 1.01 1.3074 6 2 4 6
72.35 2.26 1.3061 8 3 2 6
72.49 1.83 1.3040 2 3 5 6
72.65 1.23 1.3014 5 7 1 6
73.47 1.47 1.2889 0 10 2 3
73.77 1.87 1.2844 8 4 1 6
74.24 3.87 1.2774 9 3 0 6
74.46 2.37 1.2743 2 8 3 6
74.72 10.30 1.2705 5 0 5 3
75.61 3.17 1.2577 5 4 4 6
77.09 3.87 1.2372 0 11 1 3
77.89 1.66 1.2265 4 8 2 6
78.18 1.17 1.2226 2 10 1 6
79.11 2.18 1.2105 3 4 5 6
80.58 1.96 1.1922 0 0 6 1
81.45 2.92 1.1817 11 1 1 6
83.82 1.17 1.1541 3 0 6 3
84.27 5.58 1.1491 10 1 3 6
86.42 2.01 1.1260 9 3 3 6
86.46 1.20 1.1256 1 9 4 6
88.11 1.08 1.1087 1 4 6 6
89.67 1.89 1.0934 10 0 4 3
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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.