Zwieselite Diffraction data computed using the structure from the paper listed below, along with the cell parameters refined from the powder pattern for R050279 Yakubovich O V, Simonov M A, Matvienko E N, Belov N V Doklady Akademii Nauk SSSR 238 (1978) 576-579 The crystal structure of the synthetic finite Fe-term of the series triplite - zwieselite Fe2(PO4)F CELL PARAMETERS: 11.99900 9.890000 6.489000 90.00000 90.00000 107.7200 SPACE GROUP: I2/a X-RAY WAVELENGTH: 1.541838 2-THETA INTENSITY D-SPACING H K L 15.69 1.50 5.6618 1 0 1 18.58 1.52 4.7836 0 2 0 20.39 2.81 4.3620 -2 2 0 20.68 11.85 4.3012 2 -1 1 22.58 7.54 3.9431 -1 2 1 24.44 53.16 3.6463 2 1 1 26.08 24.92 3.4204 1 2 1 27.48 2.12 3.2484 0 0 2 27.50 67.30 3.2466 2 2 0 28.70 2.17 3.1131 3 -2 1 29.36 91.41 3.0442 1 -1 2 31.19 100.00 2.8696 -4 2 0 31.01 7.35 2.8860 4 0 0 31.27 45.75 2.8628 0 3 1 31.63 17.15 2.8309 2 0 2 32.74 14.79 2.7367 4 -1 1 33.36 13.80 2.6873 0 2 2 34.44 26.90 2.6053 2 -2 2 35.63 24.69 2.5209 3 -1 2 36.23 15.95 2.4807 -2 4 0 36.71 1.57 2.4495 3 2 1 38.04 6.63 2.3662 4 -3 1 37.74 6.72 2.3848 4 1 1 37.62 1.07 2.3918 0 4 0 38.73 7.49 2.3260 -1 4 1 38.61 2.36 2.3327 2 3 1 39.19 1.65 2.2996 3 1 2 39.25 6.32 2.2963 2 2 2 40.57 8.50 2.2245 5 -2 1 40.62 4.29 2.2219 -3 4 1 41.41 2.86 2.1810 -4 4 0 40.98 2.53 2.2028 4 2 0 42.02 5.49 2.1506 4 -2 2 42.05 16.16 2.1493 1 3 2 42.83 24.95 2.1122 0 1 3 43.12 3.20 2.0982 1 4 1 44.74 3.84 2.0261 2 -1 3 45.39 3.92 1.9986 -6 2 0 45.72 3.62 1.9848 -1 2 3 45.08 21.05 2.0116 2 4 0 46.04 5.45 1.9715 -2 4 2 46.75 4.28 1.9435 2 1 3 46.94 1.17 1.9359 5 -1 2 47.20 2.35 1.9260 0 4 2 47.25 4.15 1.9240 6 0 0 47.51 18.48 1.9139 6 -1 1 47.60 1.12 1.9106 -2 5 1 48.18 2.61 1.8888 5 -4 1 48.23 2.87 1.8873 3 0 3 49.68 6.37 1.8351 6 -3 1 50.08 11.05 1.8217 5 -3 2 49.67 9.03 1.8355 0 5 1 50.40 11.68 1.8107 4 -4 2 50.83 1.84 1.7965 -2 3 3 50.94 6.37 1.7929 -4 5 1 50.98 1.46 1.7916 0 3 3 50.45 1.52 1.8091 4 3 1 50.69 3.35 1.8012 3 3 2 51.98 14.70 1.7594 4 -1 3 51.69 7.72 1.7685 5 1 2 52.53 7.47 1.7421 3 4 1 53.86 1.45 1.7022 6 -2 2 53.59 1.41 1.7102 2 4 2 54.18 1.18 1.6928 -1 5 2 54.78 3.67 1.6758 -3 5 2 54.79 1.63 1.6755 3 2 3 55.09 2.75 1.6670 -2 6 0 55.77 2.23 1.6481 4 -3 3 55.55 1.87 1.6544 4 1 3 55.51 4.14 1.6554 6 0 2 56.20 20.13 1.6367 2 3 3 56.53 13.09 1.6280 6 2 0 57.27 1.77 1.6087 -4 6 0 56.72 10.68 1.6228 2 5 1 57.73 4.10 1.5968 1 -1 4 57.72 4.93 1.5970 -3 4 3 57.50 1.27 1.6027 -3 6 1 57.67 4.91 1.5985 7 0 1 59.08 6.86 1.5635 2 0 4 59.02 3.34 1.5651 6 -5 1 58.51 2.55 1.5775 1 5 2 59.37 2.56 1.5565 6 -4 2 60.16 5.61 1.5380 0 2 4 60.20 6.34 1.5371 5 -5 2 60.85 6.16 1.5221 2 -2 4 61.22 4.53 1.5139 7 -1 2 61.45 3.62 1.5088 -8 2 0 61.96 3.53 1.4976 -5 6 1 62.25 5.45 1.4912 7 -3 2 63.30 8.45 1.4689 -2 5 3 62.75 4.08 1.4805 1 6 1 63.73 2.43 1.4601 -1 3 4 63.79 1.65 1.4589 5 -4 3 63.04 2.61 1.4744 5 3 2 64.06 6.45 1.4534 3 1 4 64.03 5.54 1.4540 -6 6 0 64.10 1.19 1.4526 2 2 4 64.20 3.89 1.4505 8 -3 1 63.96 1.20 1.4554 6 2 2 64.64 3.35 1.4416 -4 6 2 64.12 6.75 1.4521 4 4 2 65.04 2.96 1.4337 6 -3 3 64.99 2.43 1.4348 -8 4 0 64.57 3.34 1.4430 8 0 0 65.03 4.99 1.4339 0 5 3 66.09 1.61 1.4135 4 -2 4 66.10 3.93 1.4133 -4 5 3 65.69 3.43 1.4212 4 3 3 65.45 1.69 1.4258 5 4 1 66.82 1.08 1.3997 7 1 2 66.73 1.57 1.4015 7 2 1 67.16 6.89 1.3935 -2 7 1 67.98 5.17 1.3788 6 1 3 68.56 1.25 1.3684 8 -2 2 68.34 1.77 1.3724 -4 7 1 67.73 1.49 1.3832 4 5 1 70.63 3.18 1.3333 7 -6 1 70.84 2.37 1.3298 8 -5 1 71.01 1.31 1.3271 6 -6 2 71.12 4.06 1.3254 2 5 3 71.80 1.02 1.3144 -3 6 3 72.29 4.22 1.3067 5 -3 4 72.55 4.14 1.3027 4 -4 4 72.35 1.11 1.3057 -3 7 2 72.00 1.72 1.3113 2 6 2 73.30 2.12 1.2912 1 0 5 75.16 1.02 1.2637 2 4 4 76.77 6.26 1.2411 6 0 4 78.35 1.08 1.2201 3 -2 5 77.94 3.12 1.2255 9 -1 2 77.77 2.71 1.2277 -3 8 1 78.70 2.76 1.2154 6 3 3 79.01 1.33 1.2114 5 4 3 80.10 1.13 1.1978 6 -4 4 80.45 1.51 1.1934 4 -1 5 80.22 1.67 1.1962 -5 8 1 80.82 1.25 1.1888 5 -5 4 80.53 1.94 1.1924 8 2 2 81.24 1.02 1.1837 10 -3 1 81.72 2.49 1.1780 7 -1 4 81.71 2.66 1.1781 -4 7 3 82.31 3.44 1.1710 8 3 1 83.97 1.07 1.1521 -1 4 5 83.76 1.14 1.1544 10 0 0 83.63 1.07 1.1558 0 7 3 84.32 2.64 1.1482 4 4 4 84.49 1.22 1.1462 9 1 2 85.26 1.40 1.1378 0 6 4 84.64 1.04 1.1446 5 6 1 85.13 1.72 1.1393 9 2 1 85.99 2.62 1.1301 10 -2 2 86.91 1.04 1.1205 -6 7 3 86.91 1.04 1.1205 -6 7 3 XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.