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 = 26 C Note: Reported structure does not reproduce reported formula or bondlengths _database_code_amcsd 0014385 CELL PARAMETERS: 9.3207 9.3207 6.8947 90.000 90.000 120.000 SPACE GROUP: P6_3/m X-RAY WAVELENGTH: 1.541838 Cell Volume: 518.732 Density (g/cm3): 1.677 MAX. ABS. INTENSITY / VOLUME**2: 2.670874739 RIR: 0.519 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 10.96 2.12 8.0720 1 0 0 6 16.91 13.50 5.2426 1 0 1 12 19.04 80.05 4.6603 1 1 0 6 22.02 25.50 4.0360 2 0 0 6 23.03 24.14 3.8611 1 1 1 12 25.57 9.83 3.4831 2 0 1 12 25.84 16.10 3.4474 0 0 2 2 28.15 2.21 3.1703 1 0 2 12 29.27 3.12 3.0509 1 2 0 6 29.27 35.51 3.0509 2 1 0 6 32.08 29.95 2.7900 1 2 1 12 32.08 70.05 2.7900 2 1 1 12 32.30 15.53 2.7715 1 1 2 12 33.30 64.56 2.6907 3 0 0 6 34.21 28.03 2.6213 2 0 2 12 35.82 3.81 2.5065 3 0 1 12 39.44 17.05 2.2847 1 2 2 12 39.44 5.30 2.2847 2 1 2 12 40.28 51.68 2.2388 1 3 0 6 40.28 13.52 2.2388 3 1 0 6 40.82 2.39 2.2104 1 0 3 12 40.88 4.65 2.2075 2 2 1 12 42.45 3.17 2.1293 1 3 1 12 42.45 7.72 2.1293 3 1 1 12 42.63 4.80 2.1211 3 0 2 12 43.93 24.02 2.0612 1 1 3 12 44.92 1.14 2.0180 4 0 0 6 45.41 15.99 1.9971 2 0 3 12 47.07 26.38 1.9305 2 2 2 12 48.48 7.93 1.8776 3 1 2 12 49.20 5.94 1.8518 2 3 0 6 49.66 13.09 1.8357 1 2 3 12 49.66 33.14 1.8357 2 1 3 12 51.07 10.91 1.7884 2 3 1 12 51.07 8.99 1.7884 3 2 1 12 51.91 3.17 1.7614 1 4 0 6 51.91 3.61 1.7614 4 1 0 6 52.35 1.64 1.7475 3 0 3 12 52.55 11.61 1.7415 4 0 2 12 53.14 14.70 1.7237 0 0 4 2 56.40 4.90 1.6314 3 2 2 12 57.47 1.19 1.6037 1 3 3 12 57.47 8.80 1.6037 3 1 3 12 58.74 4.09 1.5719 5 0 1 12 58.88 1.09 1.5686 1 4 2 12 60.71 6.20 1.5255 2 4 0 6 61.15 5.96 1.5155 3 3 1 12 61.82 1.17 1.5007 2 1 4 12 61.82 2.94 1.5007 1 2 4 12 63.65 11.37 1.4620 5 0 2 12 64.17 4.76 1.4514 3 0 4 12 64.64 8.55 1.4420 3 2 3 12 65.83 1.07 1.4187 1 5 1 12 65.83 5.90 1.4187 5 1 1 12 66.93 1.47 1.3981 1 4 3 12 67.10 4.14 1.3950 4 2 2 12 70.46 2.32 1.3364 5 1 2 12 71.33 1.28 1.3223 1 1 5 12 71.40 1.50 1.3210 5 0 3 12 72.54 3.78 1.3031 4 3 1 12 73.23 2.84 1.2925 5 2 0 6 73.23 1.17 1.2925 2 5 0 6 74.68 5.24 1.2710 2 4 3 12 74.72 1.30 1.2704 5 2 1 12 74.72 1.04 1.2704 2 5 1 12 75.69 3.31 1.2566 2 1 5 12 75.69 1.57 1.2566 1 2 5 12 77.00 2.04 1.2384 3 4 2 12 77.48 3.55 1.2320 1 4 4 12 77.48 1.72 1.2320 4 1 4 12 77.55 1.89 1.2310 6 1 0 6 77.91 3.70 1.2262 5 1 3 12 79.13 7.43 1.2103 2 5 2 12 79.13 1.03 1.2103 5 2 2 12 82.08 1.10 1.1741 3 1 5 12 83.36 1.68 1.1593 1 6 2 12 84.26 5.02 1.1492 4 3 3 12 84.27 2.74 1.1491 0 0 6 2 84.89 2.20 1.1423 2 4 4 12 84.89 1.52 1.1423 4 2 4 12 86.36 1.30 1.1266 5 2 3 12 87.41 3.84 1.1157 1 1 6 12 88.03 1.84 1.1095 5 1 4 12 88.38 2.39 1.1060 2 3 5 12 89.65 1.12 1.0936 5 3 2 12 89.65 1.12 1.0936 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.