Fluorapatite Diffraction data computed using the structure from the paper listed below, along with the cell parameters refined from the powder pattern for R050274 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: 9.397300 9.397300 6.878200 90.00000 90.00000 120.0000 SPACE GROUP: P6_3/m X-RAY WAVELENGTH: 1.541838 2-THETA INTENSITY D-SPACING H K L 10.92 9.88 8.1574 1 0 0 16.92 3.68 5.2604 1 0 1 18.91 1.50 4.7097 1 1 0 21.85 5.36 4.0787 2 0 0 22.94 6.53 3.8868 1 1 1 25.44 2.02 3.5089 2 0 1 25.95 37.39 3.4413 0 0 2 28.20 12.00 3.1707 1 0 2 29.01 14.05 3.0832 1 2 0 31.86 69.57 2.8138 1 2 1 31.86 30.43 2.8138 2 1 1 32.27 40.17 2.7786 1 1 2 32.99 57.76 2.7191 3 0 0 34.14 25.65 2.6302 2 0 2 35.55 3.82 2.5289 3 0 1 39.28 4.77 2.2964 1 2 2 39.89 4.48 2.2625 1 3 0 39.89 16.68 2.2625 3 1 0 40.53 2.86 2.2280 2 2 1 42.08 1.94 2.1493 1 3 1 42.08 3.88 2.1493 3 1 1 43.94 4.39 2.0625 1 1 3 44.46 1.26 2.0394 4 0 0 45.39 3.59 1.9996 2 0 3 46.78 26.84 1.9434 2 2 2 48.17 5.66 1.8905 1 3 2 48.17 7.87 1.8905 3 1 2 48.69 3.44 1.8714 3 2 0 49.56 23.65 1.8406 1 2 3 49.56 10.04 1.8406 2 1 3 50.58 8.30 1.8059 2 3 1 50.58 7.78 1.8059 3 2 1 51.36 6.19 1.7801 1 4 0 51.36 7.20 1.7801 4 1 0 52.20 1.17 1.7535 3 0 3 52.17 13.10 1.7544 4 0 2 53.27 15.82 1.7207 0 0 4 55.96 7.54 1.6441 2 3 2 57.21 1.93 1.6109 1 3 3 57.21 1.54 1.6109 3 1 3 58.13 1.65 1.5875 5 0 1 60.03 4.45 1.5416 4 2 0 60.51 4.10 1.5306 3 3 1 61.76 1.04 1.5025 1 2 4 61.76 2.13 1.5025 2 1 4 61.68 2.07 1.5043 4 2 1 63.08 10.80 1.4742 5 0 2 63.52 1.15 1.4651 1 5 0 64.06 8.26 1.4540 3 0 4 64.25 5.44 1.4502 2 3 3 65.11 6.01 1.4330 1 5 1 65.35 1.37 1.4283 3 3 2 69.78 1.58 1.3480 5 1 2 71.71 4.15 1.3163 3 4 1 72.35 2.63 1.3062 2 5 0 73.85 1.54 1.2833 2 5 1 74.10 3.33 1.2796 4 2 3 75.67 1.59 1.2570 2 1 5 75.67 3.55 1.2570 1 2 5 76.19 2.40 1.2495 4 3 2 76.60 1.14 1.2440 1 6 0 77.09 2.65 1.2372 1 4 4 77.09 4.42 1.2372 4 1 4 77.27 3.58 1.2348 1 5 3 78.29 5.03 1.2212 5 2 2 81.26 1.04 1.1839 5 0 4 83.49 3.89 1.1578 3 4 3 84.44 1.78 1.1471 0 0 6 84.35 2.02 1.1482 4 2 4 84.35 1.30 1.1482 2 4 4 85.54 1.19 1.1351 2 5 3 87.52 3.28 1.1145 1 1 6 87.42 1.82 1.1155 1 5 4 88.08 1.55 1.1089 3 2 5 88.59 1.17 1.1038 5 3 2 88.59 1.03 1.1038 7 0 2 88.59 1.03 1.1038 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.