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 32008 Locality: Bronson Station, Hastings Co., Ontario, Canada _database_code_amcsd 0018790 CELL PARAMETERS: 15.9810 15.9810 7.2100 90.000 90.000 120.000 SPACE GROUP: R3m X-RAY WAVELENGTH: 1.541838 Cell Volume: 1594.681 Density (g/cm3): 2.988 MAX. ABS. INTENSITY / VOLUME**2: 6.858394611 RIR: 0.747 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 11.07 6.44 7.9905 1 1 0 6 13.85 10.93 6.3943 1 0 1 3 17.77 23.26 4.9925 0 2 1 3 19.24 15.09 4.6133 3 0 0 3 20.98 59.51 4.2340 2 1 1 6 22.25 76.65 3.9952 2 2 0 6 25.53 48.60 3.4886 0 1 2 3 26.30 17.03 3.3883 1 3 1 6 28.62 4.24 3.1194 4 0 1 3 29.58 15.34 3.0201 4 1 0 6 30.11 73.35 2.9684 1 2 2 6 30.77 8.09 2.9058 3 2 1 6 34.12 8.00 2.6278 3 1 2 6 34.71 100.00 2.5841 0 5 1 3 35.98 1.16 2.4963 0 4 2 3 36.55 3.00 2.4587 2 4 1 6 37.42 9.38 2.4033 0 0 3 1 37.76 12.81 2.3827 2 3 2 6 38.30 21.01 2.3500 5 1 1 6 39.05 2.84 2.3067 6 0 0 3 41.11 10.29 2.1955 5 0 2 3 41.62 14.18 2.1698 4 3 1 6 42.41 5.86 2.1314 0 3 3 3 42.41 6.37 2.1314 3 0 3 3 42.71 7.96 2.1170 4 2 2 6 43.97 15.14 2.0594 2 2 3 6 44.26 38.23 2.0464 1 5 2 6 44.74 6.30 2.0256 1 6 1 6 45.40 3.95 1.9976 4 4 0 6 47.24 35.22 1.9241 3 4 2 6 47.70 1.11 1.9067 3 5 1 6 47.70 1.01 1.9067 7 0 1 3 48.40 3.77 1.8806 1 4 3 6 49.12 7.81 1.8547 6 2 1 6 49.74 1.11 1.8331 7 1 0 6 50.08 1.63 1.8214 6 1 2 6 51.10 3.14 1.7874 1 0 4 3 51.20 3.71 1.7843 3 3 3 6 52.46 2.00 1.7443 0 2 4 3 52.81 1.07 1.7335 0 7 2 3 53.23 1.23 1.7208 5 4 1 6 54.14 3.00 1.6941 2 6 2 6 55.19 15.15 1.6642 0 6 3 3 55.19 4.89 1.6642 6 0 3 3 55.85 16.57 1.6462 2 7 1 6 57.67 3.00 1.5986 4 0 4 3 57.68 18.25 1.5981 5 5 0 6 57.99 3.30 1.5903 4 5 2 6 58.39 2.73 1.5804 8 1 1 6 58.92 2.34 1.5675 3 2 4 6 59.63 3.72 1.5504 4 6 1 6 60.17 5.58 1.5378 9 0 0 3 60.48 6.45 1.5308 7 2 2 6 60.86 1.17 1.5220 7 3 1 6 61.38 15.57 1.5105 0 5 4 3 61.40 3.88 1.5101 8 2 0 6 62.59 3.53 1.4842 2 4 4 6 62.90 1.82 1.4775 1 8 2 6 63.78 16.96 1.4592 5 1 4 6 63.86 4.43 1.4575 1 7 3 6 63.86 1.19 1.4575 7 1 3 6 64.09 4.92 1.4529 6 4 2 6 64.98 4.42 1.4351 7 4 0 6 65.03 3.98 1.4342 0 1 5 3 65.64 5.45 1.4223 6 5 1 6 65.64 1.97 1.4223 1 9 1 6 66.14 12.32 1.4129 4 3 4 6 66.22 1.55 1.4113 3 6 3 6 66.22 5.01 1.4113 6 3 3 6 67.96 1.42 1.3793 3 8 1 6 69.11 10.53 1.3592 10 0 1 3 69.89 2.87 1.3459 5 6 2 6 70.73 2.91 1.3320 3 5 4 6 70.74 3.53 1.3318 6 6 0 6 70.79 3.67 1.3310 0 4 5 3 70.80 3.79 1.3308 5 5 3 6 71.85 1.60 1.3139 6 2 4 6 71.87 12.36 1.3136 10 1 0 6 71.91 1.84 1.3129 2 3 5 6 72.15 2.62 1.3093 8 3 2 6 72.50 1.42 1.3038 5 7 1 6 73.26 1.45 1.2921 0 10 2 3 73.61 2.21 1.2868 8 4 1 6 74.10 4.76 1.2795 9 3 0 6 74.14 11.28 1.2789 5 0 5 3 74.16 2.66 1.2786 2 8 3 6 75.19 4.27 1.2636 5 4 4 6 76.35 1.28 1.2473 1 5 5 6 76.58 1.15 1.2442 7 5 2 6 76.92 4.55 1.2394 0 11 1 3 77.67 2.16 1.2294 4 8 2 6 78.02 1.40 1.2248 2 10 1 6 78.54 2.49 1.2180 3 4 5 6 79.81 1.93 1.2017 0 0 6 1 81.27 3.09 1.1838 11 1 1 6 83.05 1.27 1.1629 3 0 6 3 83.95 5.30 1.1527 10 1 3 6 86.02 1.48 1.1302 6 5 4 6 86.09 2.50 1.1294 9 3 3 6 89.22 2.29 1.0977 10 0 4 3 89.28 1.13 1.0972 7 2 5 6 89.47 1.54 1.0953 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.