Cummingtonite Yang H, Hirschmann M M American Mineralogist 80 (1995) 916-922 Crystal structure of P2_1/m ferromagnesian amphibole and the role of cation ordering and composition in the P2_1/m - C2/m transition in cummingtonite Sample: UH1, untreated _database_code_amcsd 0001752 CELL PARAMETERS: 9.5015 18.1289 5.3089 90.000 102.090 90.000 SPACE GROUP: C2/m X-RAY WAVELENGTH: 1.541838 Cell Volume: 894.184 Density (g/cm3): 3.197 MAX. ABS. INTENSITY / VOLUME**2: 6.280907745 RIR: 0.640 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 9.76 74.31 9.0645 0 2 0 2 10.70 86.31 8.2682 1 1 0 4 17.08 16.50 5.1911 0 0 1 2 17.51 7.42 5.0657 1 3 0 4 18.41 23.47 4.8196 -1 1 1 4 19.11 1.17 4.6454 2 0 0 2 19.59 14.43 4.5322 0 4 0 2 19.71 5.09 4.5047 0 2 1 4 21.49 23.98 4.1341 2 2 0 4 21.85 7.01 4.0682 1 1 1 4 22.86 6.20 3.8902 -2 0 1 2 23.09 41.21 3.8521 -1 3 1 4 25.94 51.54 3.4348 1 3 1 4 26.10 7.01 3.4141 0 4 1 4 26.39 1.32 3.3777 1 5 0 4 27.49 64.16 3.2440 2 4 0 4 28.34 6.09 3.1494 2 0 1 2 29.26 82.70 3.0527 3 1 0 4 29.56 4.18 3.0215 0 6 0 2 30.04 50.77 2.9749 2 2 1 4 30.28 4.51 2.9519 -2 4 1 4 30.45 10.26 2.9351 -1 5 1 4 30.76 1.54 2.9067 -3 1 1 4 32.49 14.65 2.7561 3 3 0 4 32.71 100.00 2.7375 1 5 1 4 33.86 10.28 2.6472 -3 3 1 4 34.23 4.32 2.6199 -1 1 2 4 34.34 54.27 2.6114 0 6 1 4 34.56 3.60 2.5956 0 0 2 2 34.68 1.68 2.5863 2 4 1 4 35.44 6.27 2.5328 2 6 0 4 35.93 69.41 2.4997 -2 0 2 2 35.99 3.24 2.4953 0 2 2 4 37.32 2.70 2.4098 -2 2 2 4 37.70 2.33 2.3863 -2 6 1 4 38.22 4.40 2.3548 3 5 0 4 39.03 1.09 2.3080 -4 0 1 2 39.17 11.13 2.2996 -1 7 1 4 39.42 24.71 2.2858 -3 5 1 4 39.78 3.25 2.2661 0 8 0 2 40.07 1.45 2.2500 4 2 0 4 40.32 16.54 2.2366 -4 2 1 4 40.72 15.92 2.2161 -3 1 2 4 40.83 1.17 2.2098 1 3 2 4 41.01 11.77 2.2008 1 7 1 4 41.24 4.79 2.1889 -2 4 2 4 41.41 49.72 2.1803 2 6 1 4 43.20 2.96 2.0944 -3 3 2 4 43.35 24.20 2.0873 2 0 2 2 43.58 3.81 2.0769 0 8 1 4 43.80 2.20 2.0671 4 4 0 4 44.48 4.82 2.0367 2 8 0 4 44.54 1.98 2.0341 2 2 2 4 44.72 13.05 2.0265 3 5 1 4 45.67 2.91 1.9867 3 7 0 4 45.67 1.65 1.9863 1 5 2 4 46.03 1.85 1.9718 4 0 1 2 46.10 1.94 1.9689 0 6 2 4 46.11 3.47 1.9686 1 9 0 4 46.37 1.97 1.9581 -2 8 1 4 46.70 12.18 1.9451 -4 0 2 2 46.71 5.08 1.9447 -3 7 1 4 47.19 1.22 1.9260 -2 6 2 4 47.83 3.01 1.9018 -4 2 2 4 47.84 2.80 1.9012 -3 5 2 4 48.74 9.58 1.8684 -1 9 1 4 49.30 4.51 1.8485 5 1 0 4 49.50 2.42 1.8415 4 6 0 4 49.56 2.31 1.8394 2 8 1 4 49.71 1.81 1.8341 -4 6 1 4 50.29 2.01 1.8142 1 9 1 4 51.10 11.77 1.7874 -4 4 2 4 51.45 2.67 1.7761 5 3 0 4 53.35 1.34 1.7174 2 6 2 4 53.46 3.24 1.7140 -2 2 3 4 53.69 6.95 1.7071 0 8 2 4 53.95 3.69 1.6997 0 2 3 4 54.01 7.78 1.6979 -1 3 3 4 54.24 1.41 1.6911 -3 7 2 4 54.62 10.35 1.6801 -5 1 2 4 54.67 3.18 1.6789 -2 8 2 4 55.05 3.69 1.6681 -5 5 1 4 55.25 1.12 1.6626 -3 9 1 4 55.66 38.93 1.6513 4 6 1 4 56.25 1.08 1.6355 -4 6 2 4 56.73 13.00 1.6227 1 11 0 4 56.76 2.18 1.6220 4 8 0 4 58.01 24.52 1.5900 -1 5 3 4 58.62 6.17 1.5747 4 0 2 2 58.77 5.76 1.5712 2 10 1 4 59.59 1.77 1.5515 4 2 2 4 59.72 6.84 1.5485 6 0 0 2 60.25 2.78 1.5360 1 9 2 4 61.34 18.07 1.5114 -2 6 3 4 61.37 17.87 1.5107 0 12 0 2 61.78 7.22 1.5016 0 6 3 4 61.99 3.24 1.4970 5 5 1 4 62.43 1.78 1.4875 4 8 1 4 62.43 6.60 1.4875 4 4 2 4 62.98 2.82 1.4760 -4 8 2 4 63.15 7.33 1.4724 -6 0 2 2 63.70 6.15 1.4608 -1 7 3 4 63.99 4.69 1.4549 3 11 0 4 65.47 3.92 1.4257 -4 10 1 4 66.87 1.72 1.3992 -1 11 2 4 66.93 39.02 1.3981 -6 6 1 4 67.43 1.85 1.3888 6 2 1 4 67.76 1.15 1.3829 -2 8 3 4 67.89 6.24 1.3806 -4 6 3 4 68.13 12.60 1.3763 5 1 2 4 69.16 7.35 1.3584 2 6 3 4 69.42 5.20 1.3539 1 11 2 4 69.91 2.79 1.3456 5 3 2 4 70.90 1.54 1.3292 -1 9 3 4 71.10 1.82 1.3260 -3 11 2 4 71.14 2.33 1.3252 -5 5 3 4 71.23 1.36 1.3238 -2 0 4 2 71.24 2.90 1.3237 7 1 0 4 71.25 1.46 1.3236 -6 6 2 4 71.45 2.89 1.3203 -1 1 4 4 72.38 3.69 1.3057 0 12 2 4 72.89 10.42 1.2978 0 0 4 2 73.10 1.26 1.2945 -6 8 1 4 73.16 1.20 1.2936 -7 1 2 4 73.17 2.38 1.2935 -5 9 2 4 73.20 21.15 1.2930 -2 12 2 4 73.82 1.30 1.2837 -6 2 3 4 74.45 1.01 1.2743 6 6 1 4 74.61 1.20 1.2720 1 9 3 4 74.70 3.99 1.2707 -2 4 4 4 74.75 3.18 1.2700 -7 5 1 4 74.88 1.89 1.2681 -7 3 2 4 75.00 2.70 1.2664 4 12 0 4 75.63 1.53 1.2574 -2 10 3 4 75.86 2.15 1.2542 4 2 3 4 76.03 1.03 1.2517 0 10 3 4 76.17 4.08 1.2499 -4 0 4 2 78.09 3.26 1.2238 2 12 2 4 78.23 1.65 1.2219 6 0 2 2 80.14 1.23 1.1976 2 14 1 4 80.50 2.04 1.1931 -4 12 2 4 80.99 3.31 1.1872 2 0 4 2 81.67 9.58 1.1790 -5 11 2 4 81.80 1.23 1.1775 -8 2 1 4 83.18 1.88 1.1613 8 0 0 2 83.22 1.92 1.1609 1 15 1 4 85.77 1.01 1.1328 6 6 2 4 87.35 1.22 1.1164 -6 0 4 2 87.45 1.32 1.1154 5 13 0 4 87.55 3.06 1.1144 3 1 4 4 88.15 2.15 1.1083 7 9 0 4 88.48 1.21 1.1050 3 13 2 4 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.