Vurroite Pinto D, Bonaccorsi E, Balic-Zunic T, Makovicky E American Mineralogist 93 (2008) 713-727 The crystal structure of vurroite, Pb20Sn2(Bi,As)22S54Cl6: OD-character, polytypism, twinning, and modular description Locality: Vulcano, Aeolian Islands, Italy _database_code_amcsd 0004570 CELL PARAMETERS: 8.3710 45.5020 27.2730 90.000 98.830 90.000 SPACE GROUP: C2/c X-RAY WAVELENGTH: 1.541838 Cell Volume: 10265.091 Density (g/cm3): 6.284 MAX. ABS. INTENSITY / VOLUME**2: 45.36513691 RIR: 2.351 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 3.88 5.37 22.7510 0 2 0 2 5.08 2.64 17.3845 0 2 1 4 7.63 1.04 11.5939 0 2 2 4 10.18 2.23 8.6923 0 4 2 4 10.87 1.37 8.1385 -1 1 1 4 10.87 3.73 8.1384 1 1 0 4 12.12 8.63 7.3001 0 6 1 4 12.19 3.53 7.2620 1 3 0 4 13.05 3.45 6.7859 1 3 1 4 13.14 1.93 6.7374 0 0 4 2 14.47 1.06 6.1211 -1 5 1 4 14.62 1.30 6.0609 -1 3 3 4 14.62 3.64 6.0607 1 3 2 4 15.20 1.23 5.8278 1 5 1 4 15.58 1.93 5.6877 0 8 0 2 15.76 1.64 5.6235 1 1 3 4 16.57 1.61 5.3490 -1 5 3 4 16.70 2.14 5.3085 1 3 3 4 16.92 4.98 5.2401 0 8 2 4 17.35 4.39 5.1110 1 7 0 4 17.97 1.76 4.9365 1 7 1 4 18.32 1.80 4.8431 -1 1 5 4 18.44 2.20 4.8106 -1 5 4 4 19.77 14.42 4.4916 0 0 6 2 20.15 2.74 4.4066 0 2 6 4 20.43 13.03 4.3461 0 8 4 4 20.59 1.18 4.3138 -1 9 1 4 21.10 1.41 4.2106 1 1 5 4 21.12 1.86 4.2074 -1 9 2 4 21.27 6.01 4.1777 0 4 6 4 21.48 2.09 4.1359 -2 0 2 2 21.49 2.17 4.1359 2 0 0 2 21.59 11.37 4.1164 -2 2 1 4 21.84 2.32 4.0692 -2 2 2 4 21.84 1.98 4.0692 2 2 0 4 21.90 20.26 4.0592 0 10 3 4 22.64 11.62 3.9280 -2 4 1 4 22.73 8.15 3.9123 0 8 5 4 23.01 16.68 3.8646 0 6 6 4 23.44 4.77 3.7960 0 2 7 4 23.45 1.52 3.7940 -2 0 4 2 23.45 1.66 3.7939 2 0 2 2 23.46 10.57 3.7918 0 12 0 2 23.59 2.92 3.7708 0 10 4 4 23.70 6.97 3.7548 0 12 1 4 24.29 3.58 3.6644 -2 6 1 4 24.39 34.41 3.6501 0 12 2 4 24.41 8.17 3.6468 0 4 7 4 24.52 10.51 3.6310 -2 6 2 4 24.52 11.02 3.6310 2 6 0 4 24.67 1.36 3.6087 -1 3 7 4 24.74 16.73 3.5991 -2 4 4 4 24.74 18.96 3.5990 2 4 2 4 25.19 26.30 3.5361 -2 6 3 4 25.19 27.43 3.5360 2 6 1 4 25.27 4.29 3.5250 0 8 6 4 25.36 8.23 3.5127 -2 2 5 4 25.36 8.41 3.5126 2 2 3 4 25.50 2.50 3.4934 0 12 3 4 25.62 19.51 3.4769 0 10 5 4 25.95 1.66 3.4329 0 6 7 4 26.26 4.53 3.3935 -2 4 5 4 26.26 4.04 3.3934 2 4 3 4 26.44 7.94 3.3711 -2 8 1 4 26.46 66.68 3.3687 0 0 8 2 26.65 10.99 3.3451 -2 8 2 4 26.65 11.50 3.3450 2 8 0 4 26.98 100.00 3.3044 0 12 4 4 27.44 1.13 3.2501 0 14 0 2 27.62 1.09 3.2301 0 4 8 4 27.64 2.53 3.2268 0 14 1 4 27.65 1.84 3.2257 -1 7 7 4 27.71 12.73 3.2192 -2 6 5 4 27.71 11.78 3.2191 2 6 3 4 27.99 6.51 3.1882 0 8 7 4 28.11 15.75 3.1745 -2 4 6 4 28.11 16.16 3.1744 2 4 4 4 28.25 1.70 3.1595 0 14 2 4 28.28 10.15 3.1562 -2 8 4 4 28.28 11.30 3.1562 2 8 2 4 28.79 1.12 3.1013 0 12 5 4 28.99 2.35 3.0805 -2 10 1 4 29.00 3.22 3.0786 0 6 8 4 29.18 3.11 3.0606 -2 10 2 4 29.18 3.66 3.0605 2 10 0 4 29.43 9.54 3.0348 -2 2 7 4 29.43 9.38 3.0347 2 2 5 4 29.47 1.25 3.0305 -2 6 6 4 29.48 1.05 3.0304 2 6 4 4 29.75 1.02 3.0030 2 10 1 4 30.10 4.97 2.9688 0 2 9 4 30.36 1.33 2.9439 -1 7 8 4 30.68 1.30 2.9139 -2 10 4 4 30.68 1.54 2.9139 2 10 2 4 30.85 2.28 2.8985 0 8 8 4 30.86 11.17 2.8974 0 12 6 4 31.30 20.15 2.8582 -2 8 6 4 31.30 17.87 2.8581 2 8 4 4 31.51 39.52 2.8394 -2 6 7 4 31.51 39.62 2.8393 2 6 5 4 31.57 15.48 2.8336 -2 0 8 2 31.58 15.02 2.8335 2 0 6 2 31.94 7.25 2.8016 -2 10 5 4 31.95 7.30 2.8015 2 10 3 4 32.02 4.13 2.7950 -2 12 2 4 32.02 4.34 2.7950 2 12 0 4 32.16 14.09 2.7833 0 14 5 4 32.55 1.12 2.7510 -2 12 3 4 32.55 1.18 2.7509 2 12 1 4 32.57 8.14 2.7496 -2 4 8 4 32.57 9.84 2.7495 2 4 6 4 33.21 1.02 2.6976 1 7 8 4 33.24 3.02 2.6950 0 0 10 2 33.51 3.45 2.6745 -2 10 6 4 33.51 3.13 2.6745 2 10 4 4 34.05 1.31 2.6331 0 14 6 4 34.95 11.31 2.5671 -2 14 1 4 35.33 8.11 2.5405 -2 10 7 4 35.33 9.04 2.5404 2 10 5 4 35.35 1.22 2.5394 0 6 10 4 35.39 4.50 2.5363 -2 8 8 4 35.39 4.44 2.5362 2 8 6 4 35.51 4.55 2.5279 0 18 0 2 35.55 2.55 2.5253 3 1 3 4 35.60 5.96 2.5217 -2 14 3 4 35.60 6.20 2.5217 2 14 1 4 35.65 2.39 2.5184 0 12 8 4 35.67 3.83 2.5168 0 18 1 4 35.90 1.99 2.5014 0 10 9 4 36.04 1.15 2.4918 -2 12 6 4 36.04 1.06 2.4918 2 12 4 4 36.94 3.70 2.4334 0 18 3 4 37.43 1.95 2.4028 0 16 6 4 37.49 1.51 2.3989 -2 14 5 4 37.49 1.44 2.3988 2 14 3 4 37.76 1.12 2.3823 -2 12 7 4 37.76 1.07 2.3823 2 12 5 4 38.26 1.83 2.3523 -2 16 1 4 38.30 2.01 2.3500 0 12 9 4 38.84 2.06 2.3188 -2 6 10 4 38.84 1.70 2.3187 2 6 8 4 38.97 1.06 2.3111 -3 11 1 4 39.61 1.75 2.2751 0 20 0 2 39.71 2.58 2.2698 -2 12 8 4 39.71 2.31 2.2698 2 12 6 4 39.76 1.45 2.2670 0 20 1 4 40.15 1.90 2.2458 0 0 12 2 40.28 8.20 2.2388 -2 8 10 4 40.29 7.78 2.2387 2 8 8 4 40.62 1.70 2.2208 -2 16 5 4 40.62 1.54 2.2208 2 16 3 4 40.97 2.00 2.2030 0 18 6 4 41.09 12.15 2.1967 0 12 10 4 41.56 3.33 2.1731 0 16 8 4 41.60 11.82 2.1711 -2 6 11 4 41.60 11.21 2.1710 2 6 9 4 41.74 15.48 2.1639 -2 18 1 4 41.88 4.72 2.1572 0 10 11 4 41.88 5.31 2.1569 -2 18 2 4 41.88 5.14 2.1569 2 18 0 4 41.96 1.29 2.1534 0 6 12 4 42.30 4.59 2.1365 -2 18 3 4 42.30 5.06 2.1365 2 18 1 4 43.16 1.08 2.0960 0 20 5 4 43.23 44.13 2.0928 -4 0 2 2 43.32 1.60 2.0889 0 8 12 4 43.54 5.90 2.0788 -2 4 12 4 43.54 5.95 2.0787 2 4 10 4 43.85 4.50 2.0645 0 2 13 4 43.90 1.63 2.0622 0 22 1 4 43.95 1.73 2.0602 -2 18 5 4 43.95 1.54 2.0602 2 18 3 4 44.20 4.62 2.0491 -2 12 10 4 44.20 4.60 2.0491 2 12 8 4 44.37 1.43 2.0418 -2 14 9 4 44.37 1.43 2.0418 2 14 7 4 44.83 5.06 2.0219 0 18 8 4 45.01 2.11 2.0139 0 10 12 4 45.17 2.02 2.0073 -2 16 8 4 45.17 2.18 2.0072 2 16 6 4 45.35 1.10 1.9997 0 6 13 4 45.50 4.65 1.9934 -2 20 2 4 45.50 4.15 1.9934 2 20 0 4 45.78 3.66 1.9819 -2 8 12 4 45.78 4.24 1.9818 2 8 10 4 46.55 3.09 1.9512 -2 20 4 4 46.55 3.07 1.9512 2 20 2 4 47.03 12.23 1.9323 0 12 12 4 47.06 1.76 1.9310 0 22 5 4 47.48 2.85 1.9148 -2 6 13 4 47.48 2.87 1.9148 2 6 11 4 47.99 5.67 1.8959 0 24 0 2 48.24 3.14 1.8865 0 10 13 4 48.24 1.17 1.8863 -2 18 8 4 48.25 1.29 1.8863 2 18 6 4 48.27 1.06 1.8854 0 20 8 4 48.49 1.10 1.8774 0 24 2 4 48.58 3.92 1.8742 -2 20 6 4 48.58 3.98 1.8741 2 20 4 4 48.72 1.13 1.8691 -2 8 13 4 48.72 1.24 1.8690 2 8 11 4 48.97 1.81 1.8601 -4 10 5 4 48.97 1.99 1.8601 4 10 1 4 49.01 1.55 1.8588 -2 14 11 4 49.01 1.50 1.8587 2 14 9 4 49.13 2.18 1.8542 -2 22 1 4 49.26 1.10 1.8498 -2 16 10 4 49.26 1.04 1.8498 2 16 8 4 49.53 1.23 1.8403 -4 6 8 4 49.53 1.30 1.8402 4 6 4 4 49.73 3.97 1.8334 -2 4 14 4 49.73 4.12 1.8334 2 4 12 4 49.76 1.95 1.8322 -4 12 2 4 50.10 6.27 1.8206 -2 18 9 4 50.10 6.68 1.8206 2 18 7 4 50.25 3.79 1.8155 -4 12 4 4 50.25 3.30 1.8155 4 12 0 4 50.93 1.28 1.7930 -4 10 7 4 50.93 1.08 1.7930 4 10 3 4 51.07 1.91 1.7885 0 24 5 4 51.40 8.42 1.7777 -4 0 10 2 51.40 8.12 1.7776 4 0 6 2 51.70 10.87 1.7680 -4 12 6 4 51.70 10.44 1.7680 4 12 2 4 51.77 1.35 1.7659 -2 8 14 4 51.77 1.20 1.7659 2 8 12 4 51.88 1.70 1.7625 0 16 12 4 51.98 4.10 1.7593 0 18 11 4 52.17 1.57 1.7534 -2 22 6 4 52.17 1.64 1.7534 2 22 4 4 52.38 2.71 1.7467 0 24 6 4 52.48 1.19 1.7438 -2 2 15 4 52.48 1.14 1.7437 2 2 13 4 53.79 1.01 1.7042 -2 6 15 4 53.79 1.05 1.7041 2 6 13 4 54.05 1.53 1.6965 -4 12 8 4 54.06 1.77 1.6965 4 12 4 4 54.15 2.96 1.6939 0 26 4 4 54.48 7.13 1.6844 0 0 16 2 54.89 1.44 1.6727 -4 14 7 4 54.89 1.54 1.6727 4 14 3 4 54.95 1.04 1.6711 0 10 15 4 55.09 1.13 1.6671 0 20 11 4 55.12 1.06 1.6662 0 4 16 4 55.18 1.46 1.6645 0 26 5 4 55.63 5.49 1.6522 0 24 8 4 57.14 1.30 1.6120 -4 18 2 4 61.17 2.94 1.5152 -4 12 12 4 61.17 2.42 1.5152 4 12 8 4 63.28 1.01 1.4697 4 2 11 4 64.03 1.10 1.4541 -4 18 10 4 64.03 1.06 1.4541 4 18 6 4 65.01 1.00 1.4346 -2 8 18 4 65.78 2.72 1.4197 -4 12 14 4 65.78 2.89 1.4197 4 12 10 4 66.55 3.09 1.4051 -4 24 2 4 67.09 1.26 1.3951 -2 30 5 4 67.09 1.19 1.3951 2 30 3 4 67.59 1.16 1.3860 -2 6 19 4 67.59 1.16 1.3860 2 6 17 4 67.88 1.56 1.3807 -2 12 18 4 67.88 1.51 1.3807 2 12 16 4 69.85 1.01 1.3466 4 18 9 4 70.90 1.91 1.3292 -2 18 17 4 70.90 1.86 1.3291 2 18 15 4 71.95 1.00 1.3123 -6 6 9 4 71.96 1.02 1.3123 6 6 3 4 71.96 1.87 1.3122 -4 0 18 2 71.96 1.73 1.3121 4 0 14 2 72.95 1.30 1.2968 -4 24 10 4 72.95 1.25 1.2968 4 24 6 4 78.27 1.10 1.2215 -6 18 3 4 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.