Chervetite Diffraction data computed using the structure from the paper listed below, along with the cell parameters refined from single crystal data of R080096 Kawahara A Bulletin de la Societe Francaise de Mineralogie et de Cristallographie 90 (1967) 279-284 La structure cristalline de la chervetite Locality: Mounana, Gabon CELL PARAMETERS: 13.3860 7.1690 7.1090 90.000 105.930 90.000 SPACE GROUP: P2_1/a ATOM X Y Z OCCUPANCY ISO(B) Pb -0.13258 0.40961 0.05457 1.000 1.500 Pb 0.15443 0.19219 0.33423 1.000 1.500 V 0.10748 0.06010 -0.20087 1.000 0.800 V -0.08527 0.32390 -0.38817 1.000 0.800 O 0.46243 0.38074 0.13748 1.000 1.000 O 0.18039 0.21684 -0.02918 1.000 1.000 O 0.30039 0.45473 0.32882 1.000 1.000 O 0.46823 0.70119 0.40100 1.000 1.000 O 0.04238 0.48135 0.24622 1.000 1.000 O 0.15793 0.83009 0.30641 1.000 1.000 O 0.32602 0.13500 0.40351 1.000 1.000 X-RAY WAVELENGTHS: 1.540562 1.544390 BOUNDS ON TWO THETA: 5.0 90.0 LIMITS IMPOSED ON THE INDICES ARE: +/- 11 +/- 6 +/- 6 MAX. ABS. INTENSITY / VOLUME**2: 57.80921400 The INTENSITY cut off value is 1.00 2-THETA INTENSITY D-SPACING H K L 12.94 / 12.97 6.89 / 3.44 6.8360 0 0 1 13.75 / 13.78 6.49 / 3.25 6.4360 2 0 0 14.13 / 14.16 11.45 / 5.72 6.2631 1 1 0 16.10 / 16.14 10.74 / 5.37 5.4995 -2 0 1 17.87 / 17.91 7.24 / 3.62 4.9596 -1 1 1 17.91 / 17.96 61.63 / 30.81 4.9473 0 1 1 18.51 / 18.56 2.74 / 1.37 4.7892 2 1 0 20.34 / 20.39 5.97 / 2.99 4.3635 -2 1 1 20.45 / 20.51 42.91 / 21.45 4.3384 1 1 1 21.38 / 21.44 3.78 / 1.89 4.1516 2 0 1 24.15 / 24.21 1.59 / 0.79 3.6816 3 1 0 24.60 / 24.66 25.03 / 12.52 3.6164 -3 1 1 24.76 / 24.82 61.34 / 30.67 3.5927 2 1 1 24.82 / 24.88 3.12 / 1.56 3.5845 0 2 0 25.78 / 25.84 100.00 / 50.00 3.4531 1 2 0 25.92 / 25.99 76.62 / 38.31 3.4343 -2 0 2 27.17 / 27.24 18.88 / 9.44 3.2789 -4 0 1 27.70 / 27.77 83.36 / 41.68 3.2180 4 0 0 28.00 / 28.07 12.84 / 6.42 3.1844 -1 1 2 28.06 / 28.13 2.11 / 1.05 3.1778 -1 2 1 28.09 / 28.16 33.82 / 16.91 3.1745 0 2 1 28.48 / 28.55 1.98 / 0.99 3.1316 2 2 0 28.80 / 28.87 69.83 / 34.91 3.0973 -2 1 2 28.92 / 28.99 1.90 / 0.95 3.0853 0 1 2 29.73 / 29.80 33.29 / 16.64 3.0029 -2 2 1 29.81 / 29.89 4.55 / 2.28 2.9947 1 2 1 29.94 / 30.02 27.11 / 13.56 2.9818 -4 1 1 30.13 / 30.21 24.50 / 12.25 2.9632 3 1 1 30.42 / 30.50 11.64 / 5.82 2.9358 4 1 0 31.21 / 31.29 34.93 / 17.46 2.8637 -3 1 2 31.42 / 31.50 16.37 / 8.19 2.8448 1 1 2 32.52 / 32.61 27.07 / 13.54 2.7509 3 2 0 32.84 / 32.93 41.69 / 20.84 2.7248 2 0 2 32.86 / 32.94 4.34 / 2.17 2.7233 -3 2 1 32.99 / 33.07 26.71 / 13.36 2.7132 2 2 1 35.21 / 35.30 2.13 / 1.06 2.5470 2 1 2 35.54 / 35.63 25.54 / 12.77 2.5239 -1 2 2 35.95 / 36.05 4.40 / 2.20 2.4957 -5 1 1 36.17 / 36.26 1.08 / 0.54 2.4816 4 1 1 36.29 / 36.38 2.23 / 1.11 2.4737 0 2 2 37.07 / 37.17 3.62 / 1.81 2.4229 5 1 0 37.13 / 37.23 1.45 / 0.72 2.4194 -4 2 1 38.07 / 38.17 14.52 / 7.26 2.3616 -2 0 3 38.18 / 38.28 11.53 / 5.77 2.3550 -3 2 2 38.28 / 38.38 1.71 / 0.85 2.3495 1 3 0 38.36 / 38.46 3.98 / 1.99 2.3444 1 2 2 39.52 / 39.62 20.25 / 10.13 2.2787 0 0 3 39.62 / 39.72 2.96 / 1.48 2.2730 -5 1 2 39.91 / 40.01 5.33 / 2.67 2.2570 -1 3 1 39.96 / 40.07 7.59 / 3.80 2.2542 3 1 2 40.17 / 40.27 5.58 / 2.79 2.2430 -2 1 3 40.22 / 40.33 24.74 / 12.37 2.2402 2 3 0 40.23 / 40.34 1.62 / 0.81 2.2396 -1 1 3 41.15 / 41.26 8.28 / 4.14 2.1917 -2 3 1 41.22 / 41.32 12.41 / 6.20 2.1885 1 3 1 41.35 / 41.46 12.23 / 6.11 2.1817 -4 2 2 41.36 / 41.47 2.55 / 1.28 2.1810 -3 1 3 41.55 / 41.66 1.48 / 0.74 2.1716 0 1 3 41.60 / 41.71 5.43 / 2.72 2.1692 2 2 2 41.78 / 41.89 4.42 / 2.21 2.1602 -4 0 3 42.08 / 42.19 7.04 / 3.52 2.1453 6 0 0 42.25 / 42.36 8.37 / 4.18 2.1372 -5 2 1 42.43 / 42.54 1.12 / 0.56 2.1286 -6 1 1 42.43 / 42.55 18.03 / 9.01 2.1284 4 2 1 42.65 / 42.77 11.04 / 5.52 2.1179 5 1 1 43.16 / 43.27 7.01 / 3.51 2.0942 -6 0 2 43.23 / 43.34 24.16 / 12.08 2.0910 5 2 0 43.30 / 43.42 3.86 / 1.93 2.0877 3 3 0 43.56 / 43.68 2.23 / 1.12 2.0758 4 0 2 43.57 / 43.68 3.59 / 1.80 2.0756 -3 3 1 43.67 / 43.78 3.73 / 1.87 2.0711 2 3 1 44.03 / 44.14 8.68 / 4.34 2.0550 1 1 3 45.06 / 45.18 23.91 / 11.95 2.0102 -6 1 2 45.45 / 45.57 2.54 / 1.27 1.9939 4 1 2 45.49 / 45.61 6.75 / 3.38 1.9923 -5 2 2 45.71 / 45.83 8.14 / 4.07 1.9831 -1 3 2 45.80 / 45.92 17.81 / 8.91 1.9796 3 2 2 46.04 / 46.16 12.24 / 6.12 1.9697 -1 2 3 46.24 / 46.37 3.20 / 1.60 1.9615 -2 3 2 46.32 / 46.44 6.06 / 3.03 1.9585 0 3 2 47.23 / 47.35 5.72 / 2.86 1.9230 0 2 3 47.34 / 47.47 4.54 / 2.27 1.9185 4 3 0 47.89 / 48.01 3.47 / 1.74 1.8980 -3 3 2 48.02 / 48.15 6.84 / 3.42 1.8929 -6 2 1 49.21 / 49.34 1.73 / 0.86 1.8502 -4 2 3 49.28 / 49.41 4.31 / 2.16 1.8477 -7 1 1 49.47 / 49.60 2.89 / 1.45 1.8408 6 2 0 49.48 / 49.61 2.13 / 1.07 1.8406 1 2 3 49.51 / 49.65 18.08 / 9.04 1.8394 6 1 1 49.69 / 49.83 10.41 / 5.21 1.8332 -6 0 3 50.43 / 50.56 1.91 / 0.96 1.8082 -6 2 2 50.56 / 50.70 3.55 / 1.77 1.8037 -4 3 2 50.78 / 50.91 6.49 / 3.24 1.7966 2 3 2 50.91 / 51.04 1.18 / 0.59 1.7923 0 4 0 51.09 / 51.23 8.45 / 4.22 1.7861 -7 1 2 51.34 / 51.47 7.04 / 3.52 1.7783 -5 3 1 51.52 / 51.66 1.86 / 0.93 1.7724 5 1 2 51.88 / 52.02 1.61 / 0.80 1.7609 3 1 3 52.18 / 52.32 1.80 / 0.90 1.7514 5 3 0 52.33 / 52.47 6.12 / 3.06 1.7468 -5 2 3 52.70 / 52.84 1.52 / 0.76 1.7355 2 2 3 52.74 / 52.88 23.38 / 11.69 1.7342 -1 4 1 52.76 / 52.90 2.00 / 1.00 1.7337 0 4 1 53.49 / 53.63 5.91 / 2.96 1.7117 -3 1 4 53.63 / 53.77 3.39 / 1.70 1.7077 -1 1 4 54.15 / 54.30 4.03 / 2.02 1.6922 -5 3 2 54.33 / 54.48 2.14 / 1.07 1.6872 -7 2 1 54.59 / 54.74 6.82 / 3.41 1.6797 -2 3 3 54.87 / 55.02 8.19 / 4.09 1.6719 -8 0 1 54.94 / 55.09 13.33 / 6.67 1.6699 -4 1 4 55.21 / 55.36 9.96 / 4.98 1.6624 0 1 4 55.39 / 55.54 6.30 / 3.15 1.6574 4 0 3 55.54 / 55.69 7.14 / 3.57 1.6532 -3 3 3 55.69 / 55.84 6.26 / 3.13 1.6491 0 3 3 56.03 / 56.18 1.64 / 0.82 1.6399 -7 2 2 56.40 / 56.55 3.45 / 1.73 1.6300 -6 3 1 56.47 / 56.62 5.36 / 2.68 1.6282 -8 1 1 56.51 / 56.67 4.10 / 2.05 1.6271 6 0 2 56.58 / 56.74 3.88 / 1.94 1.6252 5 3 1 56.72 / 56.87 5.65 / 2.82 1.6217 7 1 1 56.77 / 56.92 5.55 / 2.78 1.6203 3 2 3 56.98 / 57.13 5.83 / 2.92 1.6148 4 1 3 57.21 / 57.36 1.61 / 0.80 1.6090 8 0 0 57.34 / 57.50 6.04 / 3.02 1.6055 -5 1 4 57.46 / 57.62 9.28 / 4.64 1.6025 -4 3 3 57.54 / 57.70 1.06 / 0.53 1.6003 -1 4 2 57.63 / 57.79 1.76 / 0.88 1.5982 -8 1 2 57.70 / 57.86 3.06 / 1.53 1.5964 6 3 0 57.70 / 57.86 1.10 / 0.55 1.5963 1 3 3 57.73 / 57.89 5.77 / 2.89 1.5955 1 1 4 57.86 / 58.02 2.74 / 1.37 1.5922 -2 2 4 58.06 / 58.22 1.55 / 0.78 1.5873 0 4 2 58.77 / 58.93 2.88 / 1.44 1.5699 8 1 0 58.77 / 58.93 14.25 / 7.13 1.5699 3 4 1 58.88 / 59.04 2.92 / 1.46 1.5671 4 3 2 58.94 / 59.10 1.58 / 0.79 1.5658 4 4 0 59.41 / 59.57 1.53 / 0.77 1.5545 -3 4 2 59.53 / 59.70 2.64 / 1.32 1.5515 1 4 2 59.91 / 60.08 1.93 / 0.96 1.5426 0 2 4 60.62 / 60.79 5.15 / 2.58 1.5263 2 3 3 61.08 / 61.25 4.21 / 2.11 1.5159 -7 2 3 61.35 / 61.52 1.03 / 0.51 1.5099 7 2 1 61.60 / 61.77 1.25 / 0.63 1.5044 4 2 3 61.73 / 61.90 1.55 / 0.77 1.5015 -4 4 2 62.22 / 62.39 2.26 / 1.13 1.4909 -8 2 2 62.32 / 62.49 1.40 / 0.70 1.4887 6 3 1 62.41 / 62.58 7.02 / 3.51 1.4867 -5 4 1 62.55 / 62.72 1.18 / 0.59 1.4837 4 4 1 62.72 / 62.90 5.12 / 2.56 1.4800 5 1 3 63.68 / 63.86 4.43 / 2.21 1.4600 -7 3 2 63.82 / 63.99 2.56 / 1.28 1.4573 7 3 0 63.96 / 64.13 1.12 / 0.56 1.4545 -6 3 3 64.05 / 64.23 2.55 / 1.27 1.4525 5 3 2 64.28 / 64.46 1.21 / 0.61 1.4479 8 1 1 64.37 / 64.55 1.17 / 0.59 1.4461 3 3 3 64.73 / 64.91 1.93 / 0.97 1.4390 -7 1 4 64.91 / 65.10 3.54 / 1.77 1.4353 -5 4 2 65.09 / 65.27 1.30 / 0.65 1.4318 -6 2 4 65.33 / 65.52 1.37 / 0.68 1.4271 3 1 4 65.44 / 65.63 2.88 / 1.44 1.4250 1 5 0 65.58 / 65.76 2.38 / 1.19 1.4224 2 2 4 65.76 / 65.95 3.06 / 1.53 1.4189 -2 0 5 65.78 / 65.96 1.11 / 0.56 1.4185 -3 3 4 65.90 / 66.08 1.19 / 0.59 1.4162 -1 3 4 66.16 / 66.34 1.66 / 0.83 1.4113 -3 4 3 66.51 / 66.69 1.40 / 0.70 1.4047 -4 0 5 66.57 / 66.76 1.60 / 0.80 1.4035 -1 5 1 67.06 / 67.25 1.66 / 0.83 1.3945 -4 3 4 67.11 / 67.30 1.63 / 0.82 1.3936 5 2 3 67.20 / 67.39 1.05 / 0.53 1.3919 -2 1 5 67.30 / 67.49 1.59 / 0.80 1.3901 0 3 4 68.12 / 68.31 3.44 / 1.72 1.3753 1 4 3 68.36 / 68.56 3.91 / 1.95 1.3711 -9 2 1 68.40 / 68.59 2.02 / 1.01 1.3705 -7 3 3 68.61 / 68.81 1.80 / 0.90 1.3667 8 2 1 68.65 / 68.85 2.97 / 1.48 1.3660 7 3 1 69.00 / 69.20 7.84 / 3.92 1.3599 3 5 0 69.21 / 69.41 2.19 / 1.09 1.3563 -5 3 4 69.42 / 69.62 2.53 / 1.27 1.3527 7 2 2 69.57 / 69.76 4.19 / 2.10 1.3503 -8 1 4 69.57 / 69.76 1.61 / 0.81 1.3503 1 3 4 69.63 / 69.83 1.04 / 0.52 1.3492 -5 1 5 69.88 / 70.08 4.23 / 2.12 1.3449 6 3 2 70.27 / 70.47 1.06 / 0.53 1.3384 4 1 4 70.50 / 70.70 2.70 / 1.35 1.3347 8 3 0 70.80 / 71.00 1.00 / 0.50 1.3297 -1 5 2 70.88 / 71.08 2.12 / 1.06 1.3284 9 2 0 71.24 / 71.44 1.95 / 0.97 1.3226 8 0 2 71.37 / 71.58 2.48 / 1.24 1.3204 -3 2 5 72.11 / 72.32 1.62 / 0.81 1.3087 -10 1 2 72.16 / 72.37 1.42 / 0.71 1.3079 -6 1 5 72.38 / 72.59 2.23 / 1.11 1.3045 -1 2 5 72.59 / 72.80 3.63 / 1.81 1.3013 1 5 2 72.61 / 72.82 1.92 / 0.96 1.3009 -9 2 3 73.26 / 73.47 1.20 / 0.60 1.2910 6 2 3 73.51 / 73.73 1.29 / 0.65 1.2872 10 0 0 73.56 / 73.78 3.28 / 1.64 1.2864 -8 3 3 73.75 / 73.96 1.43 / 0.71 1.2837 -8 2 4 73.76 / 73.98 2.16 / 1.08 1.2835 7 4 0 73.90 / 74.11 4.10 / 2.05 1.2814 -10 0 3 74.44 / 74.65 2.06 / 1.03 1.2735 4 2 4 74.78 / 75.00 4.49 / 2.24 1.2685 2 0 5 75.11 / 75.33 2.49 / 1.25 1.2638 -9 1 4 75.21 / 75.43 3.12 / 1.56 1.2624 -5 5 1 75.24 / 75.46 1.05 / 0.52 1.2619 -2 4 4 75.33 / 75.55 1.36 / 0.68 1.2606 -9 3 1 75.72 / 75.94 3.54 / 1.77 1.2551 -1 4 4 75.91 / 76.13 1.34 / 0.67 1.2525 5 1 4 76.24 / 76.46 2.78 / 1.39 1.2479 -10 2 2 76.78 / 77.01 2.01 / 1.01 1.2403 1 2 5 77.52 / 77.74 1.92 / 0.96 1.2304 -5 5 2 77.76 / 77.99 1.47 / 0.73 1.2272 9 3 0 78.29 / 78.53 1.26 / 0.63 1.2201 -8 0 5 78.30 / 78.54 1.02 / 0.51 1.2200 -2 3 5 78.32 / 78.55 1.78 / 0.89 1.2198 7 4 1 78.67 / 78.91 6.33 / 3.17 1.2152 -3 5 3 79.00 / 79.23 2.36 / 1.18 1.2110 -4 3 5 79.21 / 79.45 1.56 / 0.78 1.2083 -1 3 5 79.57 / 79.81 1.56 / 0.78 1.2037 -7 2 5 80.06 / 80.30 1.36 / 0.68 1.1976 6 3 3 80.12 / 80.36 1.11 / 0.56 1.1969 -11 1 2 80.51 / 80.75 4.04 / 2.02 1.1920 1 5 3 80.60 / 80.84 1.51 / 0.76 1.1910 -5 3 5 80.72 / 80.96 3.43 / 1.72 1.1895 10 1 1 80.95 / 81.19 2.53 / 1.26 1.1867 0 3 5 81.21 / 81.45 1.13 / 0.57 1.1836 4 3 4 81.60 / 81.85 1.41 / 0.70 1.1788 -2 0 6 81.76 / 82.00 2.94 / 1.47 1.1770 0 6 1 82.23 / 82.48 1.25 / 0.63 1.1713 6 1 4 82.56 / 82.81 1.95 / 0.97 1.1676 -2 6 1 82.94 / 83.19 2.64 / 1.32 1.1632 -2 1 6 83.02 / 83.27 1.52 / 0.76 1.1623 -6 3 5 83.55 / 83.81 2.93 / 1.47 1.1562 8 1 3 83.57 / 83.83 1.36 / 0.68 1.1560 5 4 3 84.26 / 84.52 1.32 / 0.66 1.1483 -1 1 6 84.26 / 84.52 1.24 / 0.62 1.1482 2 6 1 84.42 / 84.67 2.59 / 1.30 1.1465 3 2 5 84.54 / 84.80 1.04 / 0.52 1.1451 -9 1 5 84.58 / 84.84 2.09 / 1.04 1.1448 -6 0 6 84.98 / 85.24 1.07 / 0.53 1.1404 8 4 1 85.29 / 85.55 4.00 / 2.00 1.1370 -9 4 2 85.38 / 85.64 2.60 / 1.30 1.1361 -7 4 4 85.88 / 86.15 4.14 / 2.07 1.1307 7 5 0 85.91 / 86.17 1.47 / 0.73 1.1304 -6 1 6 85.93 / 86.20 3.29 / 1.64 1.1302 3 4 4 86.09 / 86.36 4.33 / 2.17 1.1285 5 5 2 86.15 / 86.41 1.04 / 0.52 1.1279 0 6 2 86.65 / 86.92 1.21 / 0.60 1.1226 -4 6 1 86.75 / 87.01 2.46 / 1.23 1.1217 -11 2 3 86.75 / 87.02 1.40 / 0.70 1.1216 3 6 1 87.30 / 87.57 1.19 / 0.60 1.1160 -3 6 2 87.41 / 87.68 1.06 / 0.53 1.1149 1 6 2 89.80 / 90.09 2.11 / 1.06 1.0912 11 1 1 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.