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 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.