Fluor-dravite 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: Dravite 43873 Locality: Pierrepont, St, Lawrence Co., New York, USA _database_code_amcsd 0018791 CELL PARAMETERS: 15.9990 15.9990 7.2360 90.000 90.000 120.000 SPACE GROUP: R3m X-RAY WAVELENGTH: 1.541838 Cell Volume: 1604.039 Density (g/cm3): 2.955 MAX. ABS. INTENSITY / VOLUME**2: 6.454630588 RIR: 0.711 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 11.06 11.04 7.9995 1 1 0 6 13.81 7.24 6.4140 1 0 1 3 17.72 27.78 5.0041 0 2 1 3 19.22 17.58 4.6185 3 0 0 3 20.94 60.24 4.2424 2 1 1 6 22.23 79.02 3.9997 2 2 0 6 25.44 47.60 3.5006 0 1 2 3 26.26 21.91 3.3939 1 3 1 6 28.57 5.85 3.1244 4 0 1 3 29.54 19.10 3.0235 4 1 0 6 30.02 79.12 2.9767 1 2 2 6 30.72 7.29 2.9103 3 2 1 6 34.03 9.73 2.6342 3 1 2 6 34.66 100.00 2.5878 0 5 1 3 35.89 1.03 2.5020 0 4 2 3 36.49 3.15 2.4622 2 4 1 6 37.28 9.77 2.4120 0 0 3 1 37.67 13.12 2.3880 2 3 2 6 38.25 23.94 2.3533 5 1 1 6 39.00 1.08 2.3093 1 1 3 6 39.00 3.37 2.3093 6 0 0 3 41.03 9.48 2.2000 5 0 2 3 41.56 13.92 2.1727 4 3 1 6 42.27 6.47 2.1380 0 3 3 3 42.27 6.59 2.1380 3 0 3 3 42.62 10.05 2.1212 4 2 2 6 43.83 15.84 2.0655 2 2 3 6 44.17 37.88 2.0503 1 5 2 6 44.68 5.54 2.0282 1 6 1 6 45.35 4.06 1.9999 4 4 0 6 47.15 38.04 1.9276 3 4 2 6 47.63 1.05 1.9092 3 5 1 6 47.63 1.40 1.9092 7 0 1 3 48.27 3.17 1.8855 1 4 3 6 49.05 7.51 1.8571 6 2 1 6 49.68 1.08 1.8352 7 1 0 6 49.99 1.87 1.8246 6 1 2 6 50.91 4.20 1.7938 1 0 4 3 51.06 3.54 1.7888 3 3 3 6 52.26 1.76 1.7503 0 2 4 3 52.71 1.23 1.7365 0 7 2 3 53.16 1.70 1.7230 5 4 1 6 54.04 2.99 1.6970 2 6 2 6 55.05 15.36 1.6680 0 6 3 3 55.05 4.70 1.6680 6 0 3 3 55.77 17.91 1.6482 2 7 1 6 57.47 2.85 1.6035 4 0 4 3 57.61 18.34 1.5999 5 5 0 6 57.89 3.69 1.5928 4 5 2 6 58.31 3.08 1.5824 8 1 1 6 58.73 2.71 1.5722 3 2 4 6 59.55 3.90 1.5523 4 6 1 6 60.10 6.25 1.5395 9 0 0 3 60.37 7.24 1.5332 7 2 2 6 60.78 1.11 1.5239 7 3 1 6 61.18 15.86 1.5148 0 5 4 3 61.32 3.90 1.5118 8 2 0 6 62.39 3.83 1.4883 2 4 4 6 62.79 2.02 1.4798 1 8 2 6 63.59 17.37 1.4632 5 1 4 6 63.72 4.86 1.4605 1 7 3 6 63.72 1.13 1.4605 7 1 3 6 63.98 4.87 1.4551 6 4 2 6 64.77 3.84 1.4394 0 1 5 3 64.90 4.33 1.4368 7 4 0 6 65.55 2.18 1.4241 1 9 1 6 65.55 5.28 1.4241 6 5 1 6 65.94 12.93 1.4166 4 3 4 6 66.07 1.67 1.4141 3 6 3 6 66.07 5.48 1.4141 6 3 3 6 67.87 1.37 1.3810 3 8 1 6 69.01 10.44 1.3608 10 0 1 3 69.77 2.86 1.3479 5 6 2 6 70.52 4.22 1.3353 0 4 5 3 70.53 2.88 1.3353 3 5 4 6 70.65 3.54 1.3333 5 5 3 6 70.65 3.41 1.3332 6 6 0 6 71.65 1.85 1.3171 2 3 5 6 71.65 1.77 1.3171 6 2 4 6 71.78 13.24 1.3151 10 1 0 6 72.02 2.65 1.3112 8 3 2 6 72.40 1.43 1.3053 5 7 1 6 73.14 1.35 1.2939 0 10 2 3 73.51 2.40 1.2883 8 4 1 6 73.88 11.45 1.2828 5 0 5 3 74.00 2.73 1.2810 2 8 3 6 74.00 5.17 1.2809 9 3 0 6 74.98 5.03 1.2666 5 4 4 6 76.08 1.51 1.2510 1 5 5 6 76.45 1.36 1.2459 7 5 2 6 76.81 4.75 1.2409 0 11 1 3 77.54 2.37 1.2311 4 8 2 6 77.90 1.37 1.2263 2 10 1 6 78.27 2.60 1.2215 3 4 5 6 79.47 1.96 1.2060 0 0 6 1 80.43 1.03 1.1940 4 6 4 6 81.15 2.91 1.1852 11 1 1 6 82.70 1.35 1.1669 3 0 6 3 83.78 5.29 1.1546 10 1 3 6 85.79 1.80 1.1326 6 5 4 6 85.91 2.73 1.1313 9 3 3 6 88.99 1.25 1.1000 7 2 5 6 88.99 2.33 1.1000 10 0 4 3 89.11 1.60 1.0988 3 3 6 6 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.