Hydroxylherderite Diffraction data computed using the structure from the paper listed below, along with the cell parameters refined from the powder pattern for R050520 Lager G A, Gibbs G V American Mineralogist 59 (1974) 919-925 A refinement of the crystal structure of herderite, CaBePO4OH CELL PARAMETERS: 9.768059 7.668127 4.791160 90.00000 90.11243 90.00000 SPACE GROUP: P2_1/a X-RAY WAVELENGTH: 1.541838 2-THETA INTENSITY D-SPACING H K L 14.72 30.01 6.0316 1 1 0 18.55 16.75 4.7912 0 0 1 21.60 5.36 4.1194 2 1 0 21.90 2.71 4.0632 0 1 1 23.23 17.69 3.8341 0 2 0 23.73 11.98 3.7538 -1 1 1 23.76 21.55 3.7494 1 1 1 24.97 1.56 3.5690 1 2 0 26.05 12.66 3.4236 -2 0 1 26.10 51.64 3.4169 2 0 1 28.57 100.00 3.1262 -2 1 1 28.62 76.64 3.1210 2 1 1 29.64 24.73 3.0158 2 2 0 29.87 58.69 2.9936 0 2 1 31.26 48.83 2.8631 -1 2 1 31.28 41.17 2.8612 1 2 1 35.16 1.79 2.5537 -2 2 1 35.20 10.26 2.5509 2 2 1 35.31 12.23 2.5429 -3 1 1 35.37 26.98 2.5388 3 1 1 36.21 2.12 2.4818 3 2 0 36.35 4.55 2.4728 1 3 0 36.82 12.04 2.4420 4 0 0 37.56 4.00 2.3956 0 0 2 38.71 18.37 2.3269 4 1 0 39.42 1.98 2.2866 0 1 2 39.82 22.79 2.2647 2 3 0 39.99 22.33 2.2552 0 3 1 40.51 16.71 2.2273 -1 1 2 40.55 1.55 2.2255 1 1 2 40.94 31.24 2.2051 -3 2 1 40.99 26.40 2.2024 3 2 1 41.08 1.19 2.1978 -1 3 1 41.10 4.43 2.1969 1 3 1 41.48 11.23 2.1774 -4 0 1 41.55 13.52 2.1740 4 0 1 41.98 9.22 2.1525 -2 0 2 42.05 1.27 2.1491 2 0 2 43.20 8.39 2.0946 -4 1 1 44.23 7.06 2.0482 -2 3 1 44.61 4.28 2.0316 0 2 2 45.10 6.95 2.0105 3 3 0 45.60 13.64 1.9897 -1 2 2 45.63 15.11 1.9884 1 2 2 47.43 9.11 1.9170 0 4 0 48.06 2.76 1.8931 5 1 0 48.06 3.03 1.8934 -4 2 1 48.39 2.77 1.8811 1 4 0 48.57 3.38 1.8747 2 2 2 48.62 13.23 1.8729 -3 1 2 48.71 15.67 1.8696 3 1 2 49.17 2.00 1.8531 3 3 1 51.19 12.61 1.7845 2 4 0 51.33 18.04 1.7798 0 4 1 51.78 7.01 1.7657 4 3 0 51.90 3.67 1.7618 -5 1 1 52.58 13.01 1.7407 5 2 0 53.09 1.78 1.7249 -3 2 2 53.22 5.57 1.7210 -1 3 2 53.53 6.63 1.7118 -4 0 2 54.96 4.56 1.6707 -4 1 2 55.07 19.48 1.6675 4 1 2 55.43 12.75 1.6575 -4 3 1 55.48 11.15 1.6560 4 3 1 55.84 12.29 1.6464 -2 3 2 55.89 19.83 1.6449 2 3 2 56.19 4.22 1.6370 -5 2 1 56.52 4.30 1.6280 6 0 0 57.72 2.83 1.5971 0 0 3 59.10 5.79 1.5631 -4 2 2 59.17 2.16 1.5613 3 4 1 59.92 1.35 1.5434 1 1 3 59.97 7.02 1.5424 -6 0 1 60.05 4.91 1.5405 6 0 1 60.03 1.43 1.5410 -3 3 2 61.07 4.01 1.5171 2 0 3 61.48 1.00 1.5079 4 4 0 61.91 5.74 1.4985 6 2 0 62.31 2.71 1.4899 -2 1 3 62.39 2.01 1.4882 2 1 3 62.59 1.82 1.4839 5 1 2 62.78 2.01 1.4798 -1 4 2 62.90 1.14 1.4773 -5 3 1 63.82 5.14 1.4581 -1 2 3 63.86 6.05 1.4574 1 2 3 64.49 4.03 1.4447 -1 5 1 64.50 1.83 1.4444 1 5 1 64.83 1.99 1.4379 4 4 1 65.18 1.94 1.4309 -6 2 1 65.15 1.95 1.4316 -2 4 2 65.20 3.33 1.4306 2 4 2 66.25 5.30 1.4105 -3 1 3 66.36 3.11 1.4084 3 1 3 66.43 1.57 1.4070 5 2 2 69.01 2.33 1.3606 -3 4 2 69.37 2.92 1.3544 0 3 3 70.10 1.79 1.3421 3 2 3 70.65 3.47 1.3330 -3 5 1 70.68 5.43 1.3324 3 5 1 71.42 2.28 1.3204 -7 1 1 71.41 1.23 1.3206 -6 3 1 71.72 2.83 1.3156 4 1 3 71.75 1.57 1.3152 5 4 1 72.35 1.63 1.3057 -2 3 3 74.17 3.81 1.2780 0 6 0 74.62 2.92 1.2715 -6 2 2 75.04 1.10 1.2654 -7 2 1 75.13 4.32 1.2642 7 2 1 74.91 2.76 1.2672 1 6 0 75.20 3.05 1.2631 -4 2 3 75.85 1.83 1.2538 -4 5 1 75.90 2.61 1.2532 4 5 1 76.04 1.32 1.2513 -3 3 3 76.14 1.76 1.2498 3 3 3 76.20 1.66 1.2490 -2 5 2 76.25 2.94 1.2484 2 5 2 76.79 10.72 1.2409 6 4 0 77.82 5.48 1.2270 0 4 3 77.97 1.16 1.2250 1 6 1 78.21 1.36 1.2218 -5 1 3 78.27 2.77 1.2210 8 0 0 78.38 1.57 1.2196 5 1 3 78.56 2.14 1.2172 1 4 3 79.45 4.00 1.2058 8 1 0 79.41 1.75 1.2063 5 5 0 79.83 3.56 1.2010 -3 5 2 80.09 2.50 1.1978 0 0 4 79.90 5.29 1.2002 3 5 2 80.15 1.94 1.1970 2 6 1 80.55 1.33 1.1921 -7 1 2 80.68 1.13 1.1905 -2 4 3 80.75 1.13 1.1897 3 6 0 81.04 1.37 1.1861 7 3 1 81.11 1.20 1.1853 -4 3 3 81.26 1.57 1.1834 0 1 4 81.25 3.22 1.1836 4 3 3 81.73 3.59 1.1778 -5 2 3 81.91 2.73 1.1758 5 2 3 82.01 2.10 1.1746 1 1 4 83.76 2.05 1.1544 3 6 1 84.05 4.21 1.1511 -7 2 2 84.21 3.57 1.1493 7 2 2 84.95 1.86 1.1412 -6 0 3 85.16 2.89 1.1390 6 0 3 85.50 1.29 1.1353 1 2 4 86.32 1.51 1.1266 6 1 3 86.92 4.01 1.1203 -1 6 2 87.71 1.07 1.1122 5 3 3 88.68 5.51 1.1025 -6 4 2 88.82 1.04 1.1012 6 4 2 89.04 2.80 1.0990 1 5 3 89.05 1.24 1.0989 -2 6 2 89.24 3.96 1.0971 -4 4 3 89.58 1.14 1.0938 -6 2 3 89.58 1.14 1.0938 -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.