Fluoro-eckermannite Oberti R, Hawthorne F C, Camara F, Raudsepp M American Mineralogist 84 (1999) 102-111 Unusual M3+ cations in synthetic amphiboles with nominal fluoro-eckermannite composition: Deviations from stoichiometry and structural effects of the cummingtonite component Sample: Ti, Na.85Na1.02Mg.98Mg4.83Ti.17Si8O22F2 _database_code_amcsd 0002057 CELL PARAMETERS: 9.6910 17.9300 5.2840 90.000 102.980 90.000 SPACE GROUP: C2/m X-RAY WAVELENGTH: 1.541838 Cell Volume: 894.686 Density (g/cm3): 3.003 MAX. ABS. INTENSITY / VOLUME**2: 4.899206447 RIR: 0.531 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 9.87 2.63 8.9650 0 2 0 2 10.59 53.99 8.3554 1 1 0 4 18.36 15.92 4.8334 -1 1 1 4 18.79 5.83 4.7217 2 0 0 2 19.81 31.40 4.4825 0 4 0 2 19.89 1.72 4.4650 0 2 1 4 22.00 13.14 4.0396 1 1 1 4 23.14 36.38 3.8436 -1 3 1 4 24.63 5.82 3.6146 -2 2 1 4 26.16 70.73 3.4067 1 3 1 4 26.59 2.06 3.3524 1 5 0 4 27.44 52.96 3.2509 2 4 0 4 28.80 79.75 3.1004 3 1 0 4 30.11 40.15 2.9684 2 2 1 4 30.18 6.11 2.9613 -3 1 1 4 30.64 23.96 2.9178 -1 5 1 4 32.14 23.16 2.7851 3 3 0 4 33.03 100.00 2.7123 1 5 1 4 33.40 22.97 2.6830 -3 3 1 4 34.71 36.72 2.5846 0 6 1 4 34.85 14.17 2.5745 0 0 2 2 35.78 69.23 2.5096 -2 0 2 2 36.34 1.90 2.4721 1 7 0 4 38.04 5.51 2.3657 3 5 0 4 39.13 22.68 2.3021 -3 5 1 4 39.50 22.10 2.2815 -1 7 1 4 39.55 14.29 2.2785 -4 2 1 4 40.24 1.57 2.2413 0 8 0 2 40.28 18.67 2.2390 -3 1 2 4 41.23 4.73 2.1898 -2 4 2 4 41.44 11.54 2.1791 1 7 1 4 41.69 39.05 2.1666 2 6 1 4 42.83 7.84 2.1112 -3 3 2 4 43.66 16.43 2.0731 2 0 2 2 44.76 2.32 2.0247 2 8 0 4 44.78 9.69 2.0239 3 5 1 4 45.66 1.73 1.9868 3 7 0 4 45.95 8.74 1.9749 -4 0 2 2 46.14 2.25 1.9675 1 5 2 4 46.59 4.12 1.9493 1 9 0 4 46.61 1.99 1.9487 -3 7 1 4 46.91 3.31 1.9370 4 2 1 4 47.61 3.67 1.9100 -3 5 2 4 48.37 4.15 1.8816 2 4 2 4 48.46 9.40 1.8783 5 1 0 4 49.21 7.30 1.8517 -1 9 1 4 49.25 1.10 1.8501 -4 6 1 4 50.50 8.85 1.8073 -4 4 2 4 50.69 2.63 1.8009 5 3 0 4 50.85 5.22 1.7957 1 9 1 4 50.93 2.91 1.7930 0 10 0 2 52.83 1.47 1.7330 1 7 2 4 53.59 8.87 1.7101 -5 1 2 4 54.27 3.69 1.6904 0 8 2 4 54.35 7.73 1.6880 -1 3 3 4 54.43 3.61 1.6857 0 2 3 4 54.93 6.51 1.6717 -2 8 2 4 55.34 3.26 1.6600 -3 9 1 4 55.61 34.96 1.6528 4 6 1 4 56.63 6.76 1.6254 4 8 0 4 57.36 9.15 1.6062 1 11 0 4 58.42 25.36 1.5797 -1 5 3 4 58.66 3.74 1.5739 6 0 0 2 58.70 4.14 1.5729 4 0 2 2 59.33 3.67 1.5577 2 10 1 4 60.93 3.23 1.5205 1 9 2 4 61.58 20.66 1.5061 -2 6 3 4 61.67 4.43 1.5041 5 5 1 4 61.80 9.26 1.5013 -6 0 2 2 62.12 16.66 1.4942 0 12 0 2 62.39 2.73 1.4883 0 6 3 4 62.45 3.12 1.4871 2 2 3 4 62.59 4.02 1.4842 4 4 2 4 62.70 3.08 1.4818 -4 8 2 4 63.80 1.43 1.4589 -2 10 2 4 64.22 6.69 1.4504 -1 7 3 4 64.36 4.33 1.4475 3 11 0 4 65.41 2.50 1.4268 -4 10 1 4 65.58 2.81 1.4235 -6 4 2 4 65.91 38.11 1.4171 -6 6 1 4 66.75 1.11 1.4013 -5 3 3 4 67.55 1.76 1.3867 -4 6 3 4 68.04 15.61 1.3779 5 1 2 4 69.86 3.85 1.3464 5 3 2 4 69.87 4.96 1.3463 2 6 3 4 69.93 3.20 1.3453 7 1 0 4 70.25 5.70 1.3400 1 11 2 4 70.39 3.48 1.3375 -5 5 3 4 71.38 1.59 1.3214 -3 11 2 4 71.48 1.46 1.3198 -7 1 2 4 71.51 2.82 1.3194 -2 0 4 2 71.54 2.29 1.3189 -1 9 3 4 71.72 1.49 1.3159 7 3 0 4 71.97 5.40 1.3121 -1 1 4 4 72.68 2.17 1.3010 -5 9 2 4 73.25 7.37 1.2923 0 12 2 4 73.26 1.62 1.2921 -7 3 2 4 73.35 5.53 1.2907 -7 5 1 4 73.58 6.58 1.2872 0 0 4 2 73.74 2.03 1.2848 -1 3 4 4 73.81 20.27 1.2839 -2 12 2 4 73.96 3.94 1.2816 6 6 1 4 75.05 1.52 1.2657 -2 4 4 4 75.27 1.52 1.2626 4 12 0 4 75.81 4.35 1.2548 -4 0 4 2 77.93 1.02 1.2259 6 0 2 2 78.59 1.22 1.2172 -7 7 1 4 78.99 1.07 1.2121 2 12 2 4 79.28 1.55 1.2084 -4 4 4 4 81.38 8.68 1.1825 -5 11 2 4 81.55 1.72 1.1804 8 0 0 2 81.87 3.34 1.1767 2 0 4 2 83.20 2.34 1.1611 4 6 3 4 84.32 1.18 1.1486 1 15 1 4 87.28 2.46 1.1170 7 9 0 4 87.60 1.68 1.1138 5 13 0 4 88.44 3.24 1.1054 3 1 4 4 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.