Fluorapatite Diffraction data computed using the structure from the paper listed below, along with the cell parameters refined from the powder pattern R050194 Hughes J M, Cameron M, Crowley K D American Mineralogist 74 (1989) 870-876 Structural variations in natural F, OH, and Cl apatites Locality: Durango Mexico CELL PARAMETERS: 9.371583 9.371583 6.881269 90.00000 90.00000 120.0000 SPACE GROUP: P6_3/m X-RAY WAVELENGTH: 1.541838 2-THETA INTENSITY D-SPACING H K L 10.94 9.88 8.1160 1 0 0 16.93 3.68 5.2486 1 0 1 18.97 1.50 4.6858 1 1 0 21.93 5.36 4.0580 2 0 0 22.99 6.53 3.8731 1 1 1 25.51 2.02 3.4955 2 0 1 25.92 37.39 3.4406 0 0 2 28.20 12.00 3.1677 1 0 2 29.14 14.05 3.0676 1 2 0 31.97 69.57 2.8018 1 2 1 31.97 30.43 2.8018 2 1 1 32.30 40.17 2.7733 1 1 2 33.13 57.76 2.7053 3 0 0 34.19 25.65 2.6243 2 0 2 35.68 3.82 2.5178 3 0 1 39.37 4.77 2.2897 1 2 2 40.07 4.48 2.2510 1 3 0 40.07 16.68 2.2510 3 1 0 40.70 2.86 2.2179 2 2 1 42.26 1.94 2.1394 1 3 1 42.26 3.88 2.1394 3 1 1 43.96 4.39 2.0602 1 1 3 44.67 1.26 2.0290 4 0 0 45.43 3.59 1.9968 2 0 3 46.93 26.84 1.9365 2 2 2 48.32 5.66 1.8837 1 3 2 48.32 7.87 1.8837 3 1 2 48.92 3.44 1.8619 3 2 0 49.63 23.65 1.8370 1 2 3 49.63 10.04 1.8370 2 1 3 50.80 8.30 1.7973 2 3 1 50.80 7.78 1.7973 3 2 1 51.61 6.19 1.7711 1 4 0 51.61 7.20 1.7711 4 1 0 52.29 1.17 1.7495 3 0 3 52.35 13.10 1.7477 4 0 2 53.25 15.82 1.7203 0 0 4 56.17 7.54 1.6375 2 3 2 57.35 1.93 1.6066 1 3 3 57.35 1.54 1.6066 3 1 3 58.41 1.65 1.5798 5 0 1 60.34 4.45 1.5338 4 2 0 60.81 4.10 1.5232 3 3 1 61.83 1.04 1.5005 1 2 4 61.83 2.13 1.5005 2 1 4 61.98 2.07 1.4970 4 2 1 63.35 10.80 1.4680 5 0 2 63.85 1.15 1.4577 1 5 0 64.14 8.26 1.4517 3 0 4 64.45 5.44 1.4456 2 3 3 65.44 6.01 1.4260 1 5 1 65.63 1.37 1.4222 3 3 2 70.09 1.58 1.3422 5 1 2 72.09 4.15 1.3099 3 4 1 72.75 2.63 1.2996 2 5 0 74.25 1.54 1.2770 2 5 1 74.38 3.33 1.2750 4 2 3 75.73 1.59 1.2557 2 1 5 75.73 3.55 1.2557 1 2 5 76.57 2.40 1.2440 4 3 2 77.03 1.14 1.2377 1 6 0 77.30 2.65 1.2340 1 4 4 77.30 4.42 1.2340 4 1 4 77.58 3.58 1.2303 1 5 3 78.68 5.03 1.2158 5 2 2 81.50 1.04 1.1806 5 0 4 83.86 3.89 1.1533 3 4 3 84.44 1.78 1.1469 0 0 6 84.62 2.02 1.1448 4 2 4 84.62 1.30 1.1448 2 4 4 85.93 1.19 1.1307 2 5 3 87.54 3.28 1.1140 1 1 6 87.73 1.82 1.1121 1 5 4 88.26 1.55 1.1067 3 2 5 89.08 1.17 1.0987 5 3 2 89.08 1.03 1.0987 7 0 2 89.08 1.03 1.0987 7 0 2 XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.