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 43230 Locality: Yinnietharra, Western Australia _database_code_amcsd 0018792 CELL PARAMETERS: 15.9410 15.9410 7.2010 90.000 90.000 120.000 SPACE GROUP: R3m X-RAY WAVELENGTH: 1.541838 Cell Volume: 1584.727 Density (g/cm3): 3.002 MAX. ABS. INTENSITY / VOLUME**2: 6.772210123 RIR: 0.735 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 11.10 7.28 7.9705 1 1 0 6 13.87 18.72 6.3846 1 0 1 3 17.80 21.91 4.9830 0 2 1 3 19.29 13.74 4.6018 3 0 0 3 21.03 60.58 4.2253 2 1 1 6 22.31 82.64 3.9852 2 2 0 6 25.57 51.46 3.4840 0 1 2 3 26.36 16.27 3.3807 1 3 1 6 28.68 4.24 3.1123 4 0 1 3 29.65 13.78 3.0126 4 1 0 6 30.16 72.96 2.9635 1 2 2 6 30.84 7.50 2.8991 3 2 1 6 34.18 6.77 2.6230 3 1 2 6 34.80 100.00 2.5780 0 5 1 3 36.64 2.49 2.4529 2 4 1 6 37.47 9.74 2.4003 0 0 3 1 37.83 14.43 2.3780 2 3 2 6 38.40 20.97 2.3444 5 1 1 6 39.15 2.45 2.3009 6 0 0 3 41.20 10.76 2.1910 5 0 2 3 41.73 12.65 2.1646 4 3 1 6 42.48 6.26 2.1282 0 3 3 3 42.48 5.87 2.1282 3 0 3 3 42.80 7.78 2.1126 4 2 2 6 44.04 13.55 2.0562 2 2 3 6 44.36 39.74 2.0421 1 5 2 6 44.85 6.02 2.0207 1 6 1 6 45.52 3.59 1.9926 4 4 0 6 47.35 34.62 1.9200 3 4 2 6 47.82 1.59 1.9021 3 5 1 6 47.82 1.22 1.9021 7 0 1 3 48.49 4.72 1.8773 1 4 3 6 49.25 7.70 1.8502 6 2 1 6 49.87 1.17 1.8286 7 1 0 6 50.20 1.30 1.8174 6 1 2 6 51.17 3.53 1.7851 1 0 4 3 51.30 3.65 1.7811 3 3 3 6 52.53 1.64 1.7420 0 2 4 3 53.37 1.13 1.7166 5 4 1 6 54.27 2.98 1.6904 2 6 2 6 55.31 16.57 1.6610 0 6 3 3 55.31 4.34 1.6610 6 0 3 3 56.00 16.64 1.6421 2 7 1 6 57.76 3.32 1.5962 4 0 4 3 57.84 17.66 1.5941 5 5 0 6 58.14 3.31 1.5867 4 5 2 6 58.55 2.65 1.5766 8 1 1 6 59.02 2.05 1.5651 3 2 4 6 59.80 3.89 1.5466 4 6 1 6 60.34 5.50 1.5339 9 0 0 3 60.63 6.39 1.5273 7 2 2 6 61.03 1.42 1.5183 7 3 1 6 61.49 15.86 1.5080 0 5 4 3 61.57 4.10 1.5063 8 2 0 6 62.70 3.82 1.4817 2 4 4 6 63.06 1.65 1.4742 1 8 2 6 63.90 16.95 1.4568 5 1 4 6 64.01 4.19 1.4546 1 7 3 6 64.26 5.19 1.4496 6 4 2 6 65.12 3.53 1.4324 0 1 5 3 65.17 4.46 1.4315 7 4 0 6 65.82 1.94 1.4188 1 9 1 6 65.82 6.22 1.4188 6 5 1 6 66.27 12.83 1.4104 4 3 4 6 66.37 1.62 1.4084 3 6 3 6 66.37 4.70 1.4084 6 3 3 6 68.15 1.39 1.3759 3 8 1 6 69.30 10.46 1.3558 10 0 1 3 70.08 3.11 1.3428 5 6 2 6 70.87 2.86 1.3296 3 5 4 6 70.90 3.49 1.3291 0 4 5 3 70.95 3.64 1.3284 6 6 0 6 70.98 4.10 1.3279 5 5 3 6 72.01 1.55 1.3115 6 2 4 6 72.03 2.11 1.3110 2 3 5 6 72.08 11.88 1.3103 10 1 0 6 72.34 2.55 1.3062 8 3 2 6 72.71 1.44 1.3006 5 7 1 6 73.46 1.52 1.2890 0 10 2 3 73.83 1.99 1.2836 8 4 1 6 74.28 11.32 1.2769 5 0 5 3 74.32 5.02 1.2763 9 3 0 6 74.35 2.51 1.2759 2 8 3 6 75.36 4.19 1.2613 5 4 4 6 76.79 1.04 1.2412 7 5 2 6 77.15 4.36 1.2364 0 11 1 3 77.89 2.11 1.2265 4 8 2 6 78.25 1.36 1.2218 2 10 1 6 78.69 2.75 1.2160 3 4 5 6 79.93 1.94 1.2002 0 0 6 1 81.51 2.91 1.1809 11 1 1 6 83.19 1.42 1.1613 3 0 6 3 84.18 5.82 1.1501 10 1 3 6 86.23 1.43 1.1279 6 5 4 6 86.33 2.34 1.1269 9 3 3 6 89.45 2.31 1.0955 10 0 4 3 89.48 1.25 1.0952 7 2 5 6 89.63 1.44 1.0937 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.