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 = 750 C
Note: Reported structure does not reproduce reported formula or bondlengths
_database_code_amcsd 0014387
CELL PARAMETERS: 9.3593 9.3593 6.8919 90.000 90.000 120.000
SPACE GROUP: P6_3/m
X-RAY WAVELENGTH: 1.541838
Cell Volume: 522.825
Density (g/cm3): 1.721
MAX. ABS. INTENSITY / VOLUME**2: 2.934885951
RIR: 0.555
RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
2-THETA INTENSITY D-SPACING H K L Multiplicity
10.92 1.47 8.1054 1 0 0 6
16.89 14.87 5.2505 1 0 1 12
18.96 76.20 4.6796 1 1 0 6
21.93 28.99 4.0527 2 0 0 6
22.97 25.51 3.8715 1 1 1 12
25.50 11.66 3.4935 2 0 1 12
25.85 18.65 3.4460 0 0 2 2
28.14 1.96 3.1713 1 0 2 12
29.15 3.50 3.0635 1 2 0 6
29.15 34.81 3.0635 2 1 0 6
31.97 31.28 2.7994 1 2 1 12
31.97 68.72 2.7994 2 1 1 12
32.26 16.60 2.7748 1 1 2 12
33.16 62.37 2.7018 3 0 0 6
34.15 24.90 2.6252 2 0 2 12
35.69 3.87 2.5154 3 0 1 12
39.35 14.59 2.2896 1 2 2 12
39.35 4.30 2.2896 2 1 2 12
40.11 50.74 2.2480 1 3 0 6
40.11 13.50 2.2480 3 1 0 6
40.72 4.98 2.2156 2 2 1 12
40.83 2.43 2.2102 1 0 3 12
42.29 3.82 2.1372 1 3 1 12
42.29 8.02 2.1372 3 1 1 12
42.52 2.61 2.1262 3 0 2 12
43.90 21.51 2.0622 1 1 3 12
44.72 1.14 2.0263 4 0 0 6
45.38 15.87 1.9985 2 0 3 12
46.94 29.38 1.9358 2 2 2 12
48.34 7.50 1.8828 3 1 2 12
48.99 5.90 1.8595 2 3 0 6
49.60 13.16 1.8379 1 2 3 12
49.60 34.77 1.8379 2 1 3 12
50.86 12.58 1.7953 2 3 1 12
50.86 8.22 1.7953 3 2 1 12
51.68 2.86 1.7687 1 4 0 6
51.68 2.80 1.7687 4 1 0 6
52.27 1.58 1.7502 3 0 3 12
52.38 11.43 1.7467 4 0 2 12
53.16 13.90 1.7230 0 0 4 2
56.21 6.36 1.6364 3 2 2 12
57.35 1.40 1.6067 1 3 3 12
57.35 9.33 1.6067 3 1 3 12
58.49 3.68 1.5780 5 0 1 12
60.44 6.20 1.5318 2 4 0 6
60.89 6.72 1.5214 3 3 1 12
61.77 1.11 1.5018 2 1 4 12
61.77 2.75 1.5018 1 2 4 12
62.07 1.15 1.4953 2 4 1 12
63.41 11.67 1.4669 5 0 2 12
64.10 4.84 1.4527 3 0 4 12
64.47 7.88 1.4454 3 2 3 12
65.54 1.26 1.4243 1 5 1 12
65.54 6.18 1.4243 5 1 1 12
66.74 1.86 1.4015 1 4 3 12
66.74 1.47 1.4015 4 1 3 12
66.84 3.91 1.3997 4 2 2 12
70.18 3.08 1.3410 5 1 2 12
71.19 1.87 1.3245 5 0 3 12
71.33 1.37 1.3222 1 1 5 12
72.21 3.87 1.3083 4 3 1 12
72.88 1.41 1.2979 2 5 0 6
72.88 3.02 1.2979 5 2 0 6
74.37 1.64 1.2755 5 2 1 12
74.44 5.76 1.2745 2 4 3 12
75.66 1.68 1.2570 1 2 5 12
75.66 2.99 1.2570 2 1 5 12
76.67 1.86 1.2428 3 4 2 12
77.17 1.75 1.2361 6 1 0 6
77.31 3.25 1.2342 1 4 4 12
77.31 1.39 1.2342 4 1 4 12
77.65 4.04 1.2297 5 1 3 12
78.80 7.42 1.2146 2 5 2 12
78.80 1.27 1.2146 5 2 2 12
81.53 1.10 1.1807 5 0 4 12
82.00 1.36 1.1751 3 1 5 12
83.00 1.87 1.1635 1 6 2 12
83.95 5.25 1.1527 4 3 3 12
84.31 2.94 1.1487 0 0 6 2
84.66 1.47 1.1448 4 2 4 12
84.66 2.04 1.1448 2 4 4 12
86.03 1.53 1.1300 5 2 3 12
87.43 3.88 1.1155 1 1 6 12
87.78 2.02 1.1120 5 1 4 12
88.25 2.66 1.1073 2 3 5 12
89.23 1.06 1.0976 5 3 2 12
89.23 1.10 1.0976 7 0 2 12
================================================================================
XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.