Povondraite Grice J D, Ercit T S Neues Jahrbuch fur Mineralogie, Abhandlungen 165 (1993) 245-266 Ordering of Fe and Mg in the tourmaline crystal structure: The correct formula Sample: Povondraite 144478 Locality: San Francisco mine, Villa Tu nari, Bolivia _database_code_amcsd 0018783 CELL PARAMETERS: 16.1860 16.1860 7.4440 90.000 90.000 120.000 SPACE GROUP: R3m X-RAY WAVELENGTH: 1.541838 Cell Volume: 1688.947 Density (g/cm3): 3.000 MAX. ABS. INTENSITY / VOLUME**2: 7.359974978 RIR: 0.799 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 10.93 80.22 8.0930 1 1 0 6 13.47 2.84 6.5745 1 0 1 3 17.38 63.47 5.1029 0 2 1 3 18.99 44.91 4.6725 3 0 0 3 20.58 41.27 4.3165 2 1 1 6 21.97 89.19 4.0465 2 2 0 6 24.75 41.19 3.5973 0 1 2 3 25.85 50.47 3.4461 1 3 1 6 27.13 2.43 3.2872 2 0 2 3 28.14 18.17 3.1706 4 0 1 3 29.20 17.30 3.0589 4 1 0 6 29.33 75.15 3.0456 1 2 2 6 30.28 3.12 2.9521 3 2 1 6 33.21 2.04 2.6977 3 3 0 6 33.33 25.12 2.6885 3 1 2 6 34.18 100.00 2.6236 0 5 1 3 35.17 6.44 2.5514 0 4 2 3 35.99 12.85 2.4957 2 4 1 6 36.20 5.10 2.4813 0 0 3 1 36.94 21.29 2.4334 2 3 2 6 37.72 27.78 2.3849 5 1 1 6 37.93 7.06 2.3723 1 1 3 6 38.54 3.20 2.3362 6 0 0 3 40.18 1.06 2.2446 5 2 0 6 40.27 12.86 2.2393 5 0 2 3 41.00 2.91 2.2014 4 3 1 6 41.19 14.60 2.1915 0 3 3 3 41.19 11.17 2.1915 3 0 3 3 41.86 19.65 2.1582 4 2 2 6 42.75 12.41 2.1153 2 2 3 6 43.39 37.57 2.0854 1 5 2 6 44.08 1.87 2.0546 1 6 1 6 44.79 2.57 2.0233 4 4 0 6 46.34 47.34 1.9593 3 4 2 6 46.99 5.38 1.9338 7 0 1 3 46.99 3.42 1.9338 3 5 1 6 47.16 1.95 1.9270 1 4 3 6 47.16 1.93 1.9270 4 1 3 6 48.40 2.72 1.8808 6 2 1 6 49.07 2.35 1.8567 7 1 0 6 49.15 4.34 1.8537 6 1 2 6 49.40 5.64 1.8448 1 0 4 3 49.94 1.88 1.8263 3 3 3 6 50.76 2.23 1.7987 0 2 4 3 51.76 5.26 1.7660 6 3 0 6 51.85 2.55 1.7635 0 7 2 3 51.85 2.89 1.7635 5 3 2 6 52.44 9.40 1.7448 5 4 1 6 53.16 1.43 1.7230 2 6 2 6 53.90 15.95 1.7010 0 6 3 3 53.90 4.74 1.7010 6 0 3 3 54.68 2.48 1.6786 1 3 4 6 55.02 21.59 1.6689 2 7 1 6 55.94 3.47 1.6436 4 0 4 3 56.89 12.17 1.6186 5 5 0 6 56.96 8.72 1.6166 4 5 2 6 57.19 6.31 1.6107 3 2 4 6 57.52 5.27 1.6022 8 1 1 6 58.75 4.90 1.5717 4 6 1 6 59.34 12.69 1.5575 9 0 0 3 59.41 9.54 1.5557 7 2 2 6 59.63 14.90 1.5505 0 5 4 3 59.96 1.26 1.5428 7 3 1 6 60.54 4.24 1.5294 8 2 0 6 60.83 5.77 1.5228 2 4 4 6 61.80 2.47 1.5012 1 8 2 6 62.01 14.62 1.4965 5 1 4 6 62.48 5.86 1.4866 1 7 3 6 62.76 3.06 1.4805 0 1 5 3 62.97 4.92 1.4761 6 4 2 6 63.93 1.85 1.4563 2 0 5 3 64.06 4.61 1.4535 7 4 0 6 64.34 14.64 1.4478 4 3 4 6 64.66 2.03 1.4416 1 9 1 6 64.66 6.11 1.4416 6 5 1 6 64.80 3.21 1.4388 3 6 3 6 64.80 8.71 1.4388 6 3 3 6 67.35 1.67 1.3903 3 1 5 6 68.06 6.57 1.3775 10 0 1 3 68.47 6.63 1.3703 0 4 5 3 68.67 3.81 1.3668 5 6 2 6 68.88 3.52 1.3632 3 5 4 6 69.18 1.31 1.3580 9 2 1 6 69.31 2.28 1.3557 5 5 3 6 69.59 3.02 1.3510 2 3 5 6 69.72 2.49 1.3488 6 6 0 6 69.99 2.65 1.3443 6 2 4 6 70.82 13.11 1.3305 10 1 0 6 70.89 2.09 1.3294 8 3 2 6 71.39 2.06 1.3213 5 7 1 6 71.52 1.77 1.3192 0 9 3 3 71.52 2.90 1.3192 9 0 3 3 71.79 10.60 1.3149 5 0 5 3 72.48 2.99 1.3040 8 4 1 6 72.61 3.41 1.3020 2 8 3 6 72.61 1.00 1.3020 8 2 3 6 73.01 7.64 1.2959 9 3 0 6 73.27 6.97 1.2919 5 4 4 6 73.97 1.03 1.2815 1 5 5 6 75.24 2.30 1.2630 7 5 2 6 75.72 4.10 1.2560 0 11 1 3 76.12 1.59 1.2505 3 4 5 6 76.31 2.94 1.2479 4 8 2 6 76.83 2.08 1.2407 0 0 6 1 77.90 1.52 1.2263 1 1 6 6 78.25 1.11 1.2217 6 1 5 6 78.64 1.24 1.2167 4 6 4 6 79.98 2.50 1.1996 11 1 1 6 80.02 1.48 1.1991 0 3 6 3 80.02 1.76 1.1991 3 0 6 3 82.21 4.96 1.1726 10 1 3 6 82.59 1.51 1.1681 12 0 0 3 83.90 1.38 1.1533 6 5 4 6 84.31 4.17 1.1487 9 3 3 6 84.56 1.09 1.1459 4 5 5 6 86.30 1.19 1.1272 3 3 6 6 86.65 1.96 1.1236 7 2 5 6 87.03 1.63 1.1197 10 0 4 3 88.73 1.09 1.1025 1 8 5 6 89.43 1.67 1.0957 0 6 6 3 89.77 1.10 1.0924 6 4 5 6 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.