Carbonate-fluorapatite
Perdikatsis B
Materials Science Forum 79 (1991) 809-814
X-ray powder diffraction study of francolite by the Rietveld method
Locality: Epirus, Greece
Sample: T = 530 C
Note: Reported structure does not reproduce reported formula or bondlengths
_database_code_amcsd 0014386
CELL PARAMETERS: 9.3230 9.3230 6.8987 90.000 90.000 120.000
SPACE GROUP: P6_3/m
X-RAY WAVELENGTH: 1.541838
Cell Volume: 519.289
Density (g/cm3): 1.708
MAX. ABS. INTENSITY / VOLUME**2: 2.877189418
RIR: 0.548
RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
2-THETA INTENSITY D-SPACING H K L Multiplicity
10.96 2.24 8.0740 1 0 0 6
16.90 13.24 5.2449 1 0 1 12
19.04 77.98 4.6615 1 1 0 6
22.02 24.30 4.0370 2 0 0 6
23.03 21.76 3.8624 1 1 1 12
25.57 9.54 3.4843 2 0 1 12
25.83 18.44 3.4494 0 0 2 2
28.13 1.99 3.1720 1 0 2 12
29.27 3.07 3.0517 1 2 0 6
29.27 33.43 3.0517 2 1 0 6
32.07 29.25 2.7908 1 2 1 12
32.07 70.75 2.7908 2 1 1 12
32.29 15.30 2.7728 1 1 2 12
33.29 60.23 2.6913 3 0 0 6
34.19 25.61 2.6224 2 0 2 12
35.81 3.68 2.5073 3 0 1 12
39.42 16.57 2.2856 1 2 2 12
39.42 4.57 2.2856 2 1 2 12
40.27 50.68 2.2393 1 3 0 6
40.27 13.26 2.2393 3 1 0 6
40.80 2.31 2.2116 1 0 3 12
40.87 4.56 2.2081 2 2 1 12
42.44 3.29 2.1299 1 3 1 12
42.44 7.50 2.1299 3 1 1 12
42.61 3.68 2.1219 3 0 2 12
43.90 23.61 2.0623 1 1 3 12
44.91 1.27 2.0185 4 0 0 6
45.39 16.11 1.9981 2 0 3 12
47.06 25.55 1.9312 2 2 2 12
48.47 7.06 1.8782 3 1 2 12
49.19 5.62 1.8523 2 3 0 6
49.64 13.05 1.8365 1 2 3 12
49.64 32.87 1.8365 2 1 3 12
51.05 11.18 1.7889 2 3 1 12
51.05 9.08 1.7889 3 2 1 12
51.90 3.00 1.7619 1 4 0 6
51.90 3.22 1.7619 4 1 0 6
52.33 1.59 1.7483 3 0 3 12
52.53 11.79 1.7421 4 0 2 12
53.10 13.99 1.7247 0 0 4 2
56.38 4.88 1.6319 3 2 2 12
57.44 1.29 1.6043 1 3 3 12
57.44 8.82 1.6043 3 1 3 12
58.72 3.70 1.5723 5 0 1 12
58.86 1.35 1.5690 1 4 2 12
60.70 5.86 1.5258 2 4 0 6
61.14 6.32 1.5159 3 3 1 12
61.79 1.05 1.5015 2 1 4 12
61.79 2.85 1.5015 1 2 4 12
62.32 1.16 1.4898 2 4 1 12
63.62 11.13 1.4625 5 0 2 12
64.13 4.42 1.4521 3 0 4 12
64.61 8.44 1.4425 3 2 3 12
65.81 1.06 1.4191 1 5 1 12
65.81 5.85 1.4191 5 1 1 12
66.90 1.51 1.3986 1 4 3 12
66.90 1.02 1.3986 4 1 3 12
67.07 4.20 1.3954 4 2 2 12
70.44 2.62 1.3368 5 1 2 12
71.28 1.17 1.3230 1 1 5 12
71.37 1.72 1.3215 5 0 3 12
72.52 3.61 1.3034 4 3 1 12
73.21 1.16 1.2929 2 5 0 6
73.21 2.77 1.2929 5 2 0 6
74.65 5.50 1.2714 2 4 3 12
74.70 1.05 1.2707 2 5 1 12
74.70 1.35 1.2707 5 2 1 12
75.64 3.39 1.2572 2 1 5 12
75.64 1.61 1.2572 1 2 5 12
76.97 1.95 1.2388 3 4 2 12
77.44 3.45 1.2325 1 4 4 12
77.44 1.45 1.2325 4 1 4 12
77.53 1.79 1.2313 6 1 0 6
77.88 3.64 1.2266 5 1 3 12
79.11 7.01 1.2106 2 5 2 12
81.69 1.12 1.1788 5 0 4 12
82.03 1.07 1.1747 3 1 5 12
83.34 1.71 1.1596 1 6 2 12
84.21 2.88 1.1498 0 0 6 2
84.23 5.02 1.1496 4 3 3 12
84.85 2.02 1.1428 2 4 4 12
84.85 1.50 1.1428 4 2 4 12
86.32 1.36 1.1270 5 2 3 12
87.35 3.66 1.1163 1 1 6 12
87.99 1.86 1.1099 5 1 4 12
88.33 2.49 1.1065 2 3 5 12
89.62 1.07 1.0939 7 0 2 12
89.62 1.13 1.0939 5 3 2 12
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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.