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 = 1200 C
Note: Reported structure does not reproduce reported formula or bondlengths
_database_code_amcsd 0014388
CELL PARAMETERS: 9.3708 9.3708 6.8880 90.000 90.000 120.000
SPACE GROUP: P6_3/m
X-RAY WAVELENGTH: 1.541838
Cell Volume: 523.814
Density (g/cm3): 1.775
MAX. ABS. INTENSITY / VOLUME**2: 3.311232577
RIR: 0.607
RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
2-THETA INTENSITY D-SPACING H K L Multiplicity
10.90 1.93 8.1154 1 0 0 6
16.88 12.78 5.2514 1 0 1 12
18.94 72.00 4.6854 1 1 0 6
21.90 26.86 4.0577 2 0 0 6
22.96 28.53 3.8741 1 1 1 12
25.48 11.23 3.4961 2 0 1 12
25.87 22.28 3.4440 0 0 2 2
28.15 1.58 3.1703 1 0 2 12
29.11 2.89 3.0673 1 2 0 6
29.11 31.56 3.0673 2 1 0 6
31.94 31.63 2.8020 1 2 1 12
31.94 68.37 2.8020 2 1 1 12
32.26 17.84 2.7750 1 1 2 12
33.12 59.94 2.7051 3 0 0 6
34.15 22.80 2.6257 2 0 2 12
35.66 4.11 2.5179 3 0 1 12
39.34 3.91 2.2906 2 1 2 12
39.34 12.78 2.2906 1 2 2 12
40.06 47.79 2.2508 1 3 0 6
40.06 13.71 2.2508 3 1 0 6
40.68 5.60 2.2179 2 2 1 12
40.85 2.30 2.2093 1 0 3 12
42.24 4.33 2.1395 1 3 1 12
42.24 8.04 2.1395 3 1 1 12
42.49 1.74 2.1273 3 0 2 12
43.91 18.85 2.0618 1 1 3 12
44.66 1.18 2.0288 4 0 0 6
45.39 15.35 1.9983 2 0 3 12
46.91 29.71 1.9370 2 2 2 12
48.31 6.05 1.8841 3 1 2 12
48.92 5.60 1.8618 2 3 0 6
49.60 36.07 1.8381 2 1 3 12
49.60 13.67 1.8381 1 2 3 12
50.80 13.48 1.7973 2 3 1 12
50.80 7.97 1.7973 3 2 1 12
51.61 2.97 1.7709 1 4 0 6
51.61 2.35 1.7709 4 1 0 6
52.26 1.60 1.7505 3 0 3 12
52.34 10.73 1.7481 4 0 2 12
53.19 13.77 1.7220 0 0 4 2
56.16 7.41 1.6378 3 2 2 12
57.32 1.70 1.6073 1 3 3 12
57.32 9.30 1.6073 3 1 3 12
58.42 3.65 1.5798 5 0 1 12
58.62 1.15 1.5749 1 4 2 12
60.35 6.58 1.5337 2 4 0 6
60.81 7.13 1.5231 3 3 1 12
61.78 1.02 1.5016 2 1 4 12
61.78 2.75 1.5016 1 2 4 12
61.99 1.62 1.4970 2 4 1 12
63.35 12.54 1.4682 5 0 2 12
64.11 4.93 1.4526 3 0 4 12
64.43 8.20 1.4461 3 2 3 12
65.45 1.23 1.4260 1 5 1 12
65.45 6.57 1.4260 5 1 1 12
66.70 2.06 1.4023 1 4 3 12
66.70 1.71 1.4023 4 1 3 12
66.77 3.93 1.4010 4 2 2 12
70.11 3.58 1.3423 5 1 2 12
71.14 2.10 1.3254 5 0 3 12
71.37 1.60 1.3217 1 1 5 12
72.11 4.66 1.3098 4 3 1 12
72.78 1.34 1.2995 2 5 0 6
72.78 3.17 1.2995 5 2 0 6
74.27 1.90 1.2770 5 2 1 12
74.38 6.98 1.2753 2 4 3 12
75.68 3.43 1.2567 2 1 5 12
75.68 1.87 1.2567 1 2 5 12
76.58 1.81 1.2441 3 4 2 12
77.06 1.77 1.2376 6 1 0 6
77.28 3.36 1.2346 1 4 4 12
77.28 1.21 1.2346 4 1 4 12
77.58 4.56 1.2305 5 1 3 12
78.70 7.45 1.2158 2 5 2 12
78.70 1.20 1.2158 5 2 2 12
81.49 1.61 1.1811 5 0 4 12
82.01 1.31 1.1750 3 1 5 12
82.89 2.33 1.1647 1 6 2 12
83.87 6.25 1.1535 4 3 3 12
84.37 3.54 1.1480 0 0 6 2
84.62 1.65 1.1453 4 2 4 12
84.62 2.24 1.1453 2 4 4 12
85.95 1.75 1.1309 5 2 3 12
87.48 4.31 1.1150 1 1 6 12
87.73 2.40 1.1125 5 1 4 12
88.24 3.06 1.1074 2 3 5 12
89.12 1.12 1.0988 5 3 2 12
89.12 1.04 1.0988 7 0 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.