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: V, Na.90Na.92Mg1.08Mg4.98V.02Si8O22F2 _database_code_amcsd 0002058 CELL PARAMETERS: 9.6550 17.9090 5.2670 90.000 102.730 90.000 SPACE GROUP: C2/m X-RAY WAVELENGTH: 1.541838 Cell Volume: 888.338 Density (g/cm3): 3.013 MAX. ABS. INTENSITY / VOLUME**2: 4.875182039 RIR: 0.527 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 9.88 1.97 8.9545 0 2 0 2 10.61 50.47 8.3354 1 1 0 4 18.43 14.55 4.8129 -1 1 1 4 18.85 6.33 4.7088 2 0 0 2 19.83 30.37 4.4773 0 4 0 2 22.02 14.65 4.0360 1 1 1 4 23.21 41.15 3.8316 -1 3 1 4 24.74 6.23 3.5981 -2 2 1 4 26.18 69.92 3.4034 1 3 1 4 26.63 1.94 3.3478 1 5 0 4 27.49 55.35 3.2447 2 4 0 4 28.87 79.53 3.0921 3 1 0 4 30.13 41.87 2.9660 2 2 1 4 30.33 6.49 2.9469 -3 1 1 4 30.71 27.65 2.9111 -1 5 1 4 32.22 23.39 2.7785 3 3 0 4 33.06 100.00 2.7095 1 5 1 4 33.54 20.96 2.6717 -3 3 1 4 34.76 34.08 2.5809 0 6 1 4 34.93 15.15 2.5688 0 0 2 2 35.95 70.83 2.4983 -2 0 2 2 36.39 2.15 2.4689 1 7 0 4 38.12 5.54 2.3608 3 5 0 4 39.27 20.25 2.2943 -3 5 1 4 39.57 21.32 2.2773 -1 7 1 4 39.73 15.31 2.2685 -4 2 1 4 40.29 1.87 2.2386 0 8 0 2 40.49 17.24 2.2278 -3 1 2 4 41.39 4.32 2.1817 -2 4 2 4 41.48 12.85 2.1768 1 7 1 4 41.73 40.50 2.1645 2 6 1 4 43.04 6.89 2.1015 -3 3 2 4 43.70 16.32 2.0713 2 0 2 2 44.83 8.60 2.0218 3 5 1 4 44.83 3.00 2.0218 2 8 0 4 45.75 1.52 1.9832 3 7 0 4 46.20 2.14 1.9650 1 5 2 4 46.21 8.57 1.9647 -4 0 2 2 46.65 3.81 1.9469 1 9 0 4 46.75 2.18 1.9433 -3 7 1 4 46.97 3.07 1.9346 4 2 1 4 47.81 3.70 1.9024 -3 5 2 4 48.42 3.97 1.8799 2 4 2 4 48.60 9.76 1.8732 5 1 0 4 49.29 7.13 1.8487 -1 9 1 4 50.75 9.78 1.7991 -4 4 2 4 50.83 2.69 1.7962 5 3 0 4 50.91 5.68 1.7937 1 9 1 4 50.99 2.57 1.7909 0 10 0 2 52.90 1.47 1.7308 1 7 2 4 53.89 9.81 1.7014 -5 1 2 4 54.36 4.60 1.6877 0 8 2 4 54.52 7.85 1.6831 -1 3 3 4 54.56 3.40 1.6820 0 2 3 4 55.08 5.81 1.6672 -2 8 2 4 55.48 3.26 1.6562 -3 9 1 4 55.68 36.13 1.6508 4 6 1 4 56.74 6.00 1.6223 4 8 0 4 57.44 8.75 1.6043 1 11 0 4 58.59 25.75 1.5755 -1 5 3 4 58.75 3.92 1.5717 4 0 2 2 58.83 3.76 1.5696 6 0 0 2 59.40 4.11 1.5561 2 10 1 4 61.01 2.66 1.5187 1 9 2 4 61.76 4.17 1.5020 5 5 1 4 61.79 19.03 1.5013 -2 6 3 4 62.14 8.23 1.4938 -6 0 2 2 62.20 17.78 1.4924 0 12 0 2 62.53 2.93 1.4854 2 2 3 4 62.53 3.40 1.4854 0 6 3 4 62.64 4.36 1.4830 4 4 2 4 62.94 3.08 1.4766 -4 8 2 4 63.96 1.29 1.4556 -2 10 2 4 64.39 7.15 1.4468 -1 7 3 4 64.47 4.04 1.4453 3 11 0 4 65.59 2.72 1.4233 -4 10 1 4 65.92 2.38 1.4170 -6 4 2 4 66.17 39.21 1.4123 -6 6 1 4 67.87 2.18 1.3810 -4 6 3 4 68.11 15.56 1.3767 5 1 2 4 69.93 3.74 1.3453 5 3 2 4 69.96 4.66 1.3448 2 6 3 4 70.15 3.35 1.3416 7 1 0 4 70.34 5.01 1.3383 1 11 2 4 70.77 3.01 1.3314 -5 5 3 4 71.59 1.27 1.3180 -3 11 2 4 71.72 2.38 1.3159 -1 9 3 4 71.79 3.34 1.3149 -2 0 4 2 71.88 1.78 1.3135 -7 1 2 4 71.94 1.53 1.3125 7 3 0 4 72.20 4.61 1.3084 -1 1 4 4 72.97 2.08 1.2965 -5 9 2 4 73.37 7.75 1.2904 0 12 2 4 73.65 4.96 1.2861 -7 5 1 4 73.66 1.80 1.2861 -7 3 2 4 73.77 7.57 1.2844 0 0 4 2 73.98 1.54 1.2813 -1 3 4 4 73.98 20.99 1.2812 -2 12 2 4 74.09 4.27 1.2797 6 6 1 4 74.26 1.04 1.2772 -3 9 3 4 75.33 1.73 1.2616 -2 4 4 4 75.41 1.53 1.2605 4 12 0 4 76.22 4.05 1.2492 -4 0 4 2 76.38 1.01 1.2469 4 2 3 4 77.49 1.17 1.2317 5 11 0 4 78.03 1.12 1.2247 6 0 2 2 78.90 1.16 1.2132 -7 7 1 4 79.09 1.41 1.2108 2 12 2 4 79.69 1.41 1.2032 -4 4 4 4 80.00 1.19 1.1994 -6 6 3 4 81.68 8.79 1.1788 -5 11 2 4 81.82 1.66 1.1772 8 0 0 2 82.00 2.85 1.1751 2 0 4 2 83.29 2.54 1.1602 4 6 3 4 84.44 1.22 1.1472 1 15 1 4 87.53 2.41 1.1145 7 9 0 4 87.79 1.70 1.1119 5 13 0 4 88.56 3.53 1.1043 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.