Hydroxyl-herderite Diffraction data computed using the structure from the paper listed below, along with the cell parameters refined from the powder pattern R070451. Lager G A, Gibbs G V American Mineralogist 59 (1974) 919-925 A refinement of the crystal structure of herderite, CaBePO4OH CELL PARAMETERS: 9.798037 7.655828 4.811049 90.00000 89.93540 90.00000 SPACE GROUP: P2_1/a X-RAY WAVELENGTH: 1.541838 2-THETA INTENSITY D-SPACING H K L 14.67 30.01 6.0326 1 1 0 18.42 16.75 4.8110 0 0 1 21.51 5.36 4.1265 2 1 0 21.79 2.71 4.0735 0 1 1 23.21 17.69 3.8279 0 2 0 23.64 11.98 3.7601 -1 1 1 23.62 21.55 3.7626 1 1 1 24.95 1.56 3.5655 1 2 0 25.94 12.66 3.4307 -2 0 1 25.91 51.64 3.4345 2 0 1 28.48 100.00 3.1307 -2 1 1 28.45 76.64 3.1336 2 1 1 29.58 24.73 3.0163 2 2 0 29.80 58.69 2.9954 0 2 1 31.20 48.83 2.8640 -1 2 1 31.19 41.17 2.8651 1 2 1 35.09 1.79 2.5548 -2 2 1 35.07 10.26 2.5564 2 2 1 35.20 12.23 2.5469 -3 1 1 35.17 26.98 2.5493 3 1 1 36.12 2.12 2.4846 3 2 0 36.34 4.55 2.4696 1 3 0 36.65 12.04 2.4495 4 0 0 37.35 4.00 2.4055 0 0 2 38.55 18.37 2.3330 4 1 0 39.22 1.98 2.2949 0 1 2 39.79 22.79 2.2633 2 3 0 39.95 22.33 2.2544 0 3 1 40.33 16.71 2.2339 -1 1 2 40.31 1.55 2.2350 1 1 2 40.85 31.24 2.2068 -3 2 1 40.82 26.40 2.2083 3 2 1 41.05 1.19 2.1968 -1 3 1 41.04 4.43 2.1973 1 3 1 41.34 11.23 2.1819 -4 0 1 41.30 13.52 2.1839 4 0 1 41.81 9.22 2.1583 -2 0 2 41.77 1.27 2.1602 2 0 2 43.07 8.39 2.0983 -4 1 1 44.19 7.06 2.0476 -2 3 1 44.44 4.28 2.0367 0 2 2 45.04 6.95 2.0109 3 3 0 45.45 13.64 1.9937 -1 2 2 45.43 15.11 1.9945 1 2 2 47.46 9.11 1.9140 0 4 0 47.87 2.76 1.8984 5 1 0 47.95 3.03 1.8956 -4 2 1 48.41 2.77 1.8785 1 4 0 48.33 3.38 1.8813 2 2 2 48.46 13.23 1.8768 -3 1 2 48.41 15.67 1.8787 3 1 2 49.04 2.00 1.8558 3 3 1 51.19 12.61 1.7827 2 4 0 51.33 18.04 1.7784 0 4 1 51.68 7.01 1.7672 4 3 0 51.74 3.67 1.7652 -5 1 1 52.40 13.01 1.7443 5 2 0 52.96 1.78 1.7275 -3 2 2 53.11 5.57 1.7229 -1 3 2 53.36 6.63 1.7153 -4 0 2 54.79 4.56 1.6738 -4 1 2 54.73 19.48 1.6756 4 1 2 55.35 12.75 1.6584 -4 3 1 55.32 11.15 1.6592 4 3 1 55.73 12.29 1.6479 -2 3 2 55.70 19.83 1.6488 2 3 2 56.05 4.22 1.6393 -5 2 1 56.28 4.30 1.6330 6 0 0 57.41 2.83 1.6037 0 0 3 58.95 5.79 1.5654 -4 2 2 59.08 2.16 1.5621 3 4 1 59.59 1.35 1.5501 1 1 3 59.77 7.02 1.5458 -6 0 1 59.72 4.91 1.5469 6 0 1 59.92 1.43 1.5423 -3 3 2 60.69 4.01 1.5246 2 0 3 61.42 1.00 1.5082 4 4 0 61.70 5.74 1.5020 6 2 0 62.05 2.71 1.4943 -2 1 3 62.01 2.01 1.4952 2 1 3 62.20 1.82 1.4910 5 1 2 62.70 2.01 1.4804 -1 4 2 62.79 1.14 1.4786 -5 3 1 63.57 5.14 1.4623 -1 2 3 63.54 6.05 1.4628 1 2 3 64.52 4.03 1.4431 -1 5 1 64.51 1.83 1.4432 1 5 1 64.70 1.99 1.4394 4 4 1 65.01 1.94 1.4334 -6 2 1 65.08 1.95 1.4320 -2 4 2 65.05 3.33 1.4326 2 4 2 66.00 5.30 1.4141 -3 1 3 65.94 3.11 1.4153 3 1 3 66.07 1.57 1.4128 5 2 2 68.93 2.33 1.3610 -3 4 2 69.12 2.92 1.3578 0 3 3 69.70 1.79 1.3479 3 2 3 70.65 3.47 1.3320 -3 5 1 70.63 5.43 1.3323 3 5 1 71.19 2.28 1.3234 -7 1 1 71.26 1.23 1.3222 -6 3 1 71.26 2.83 1.3222 4 1 3 71.57 1.57 1.3172 5 4 1 72.14 1.63 1.3082 -2 3 3 74.26 3.81 1.2760 0 6 0 74.43 2.92 1.2735 -6 2 2 74.82 1.10 1.2678 -7 2 1 74.78 4.32 1.2684 7 2 1 75.00 2.76 1.2653 1 6 0 74.97 3.05 1.2656 -4 2 3 75.84 1.83 1.2533 -4 5 1 75.81 2.61 1.2537 4 5 1 75.84 1.32 1.2534 -3 3 3 75.77 1.76 1.2542 3 3 3 76.16 1.66 1.2488 -2 5 2 76.13 2.94 1.2492 2 5 2 76.63 10.72 1.2423 6 4 0 77.60 5.48 1.2292 0 4 3 78.01 1.16 1.2237 1 6 1 77.96 1.36 1.2244 -5 1 3 77.94 2.77 1.2248 8 0 0 77.86 1.57 1.2257 5 1 3 78.31 2.14 1.2198 1 4 3 79.12 4.00 1.2094 8 1 0 79.34 1.75 1.2065 5 5 0 79.79 3.56 1.2009 -3 5 2 79.64 2.50 1.2028 0 0 4 79.75 5.29 1.2014 3 5 2 80.17 1.94 1.1961 2 6 1 80.31 1.33 1.1944 -7 1 2 80.50 1.13 1.1920 -2 4 3 80.79 1.13 1.1885 3 6 0 80.72 1.37 1.1894 7 3 1 80.91 1.20 1.1871 -4 3 3 80.82 1.57 1.1882 0 1 4 80.83 3.22 1.1881 4 3 3 81.50 3.59 1.1800 -5 2 3 81.40 2.73 1.1812 5 2 3 81.52 2.10 1.1797 1 1 4 83.75 2.05 1.1539 3 6 1 83.82 4.21 1.1531 -7 2 2 83.73 3.57 1.1541 7 2 2 84.68 1.86 1.1436 -6 0 3 84.56 2.89 1.1448 6 0 3 85.03 1.29 1.1398 1 2 4 85.73 1.51 1.1323 6 1 3 86.92 4.01 1.1198 -1 6 2 87.23 1.07 1.1166 5 3 3 88.54 5.51 1.1034 -6 4 2 88.47 1.04 1.1042 6 4 2 88.83 2.80 1.1005 1 5 3 89.05 1.24 1.0984 -2 6 2 89.07 3.96 1.0983 -4 4 3 89.33 1.14 1.0957 -6 2 3 89.33 1.14 1.0957 -6 2 3 XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.