Cummingtonite Yang H, Hazen R M, Prewitt C T, Finger L W, Lu R, Hemley R J American Mineralogist 83 (1998) 288-299 High-pressure single-crystal X-ray diffraction and infrared spectroscopic studies of the C2/m-P2_1/m phase transition in cummingtonite Sample: P = 0.00 GPa, in air _database_code_amcsd 0001970 CELL PARAMETERS: 9.5220 18.1833 5.3184 90.000 102.020 90.000 SPACE GROUP: C2/m X-RAY WAVELENGTH: 1.541838 Cell Volume: 900.646 Density (g/cm3): 3.280 MAX. ABS. INTENSITY / VOLUME**2: 8.462130073 RIR: 0.840 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 9.73 47.06 9.0917 0 2 0 2 10.67 100.00 8.2892 1 1 0 4 17.05 12.06 5.2018 0 0 1 2 17.46 5.07 5.0800 1 3 0 4 18.38 17.02 4.8273 -1 1 1 4 19.06 3.49 4.6566 2 0 0 2 19.53 11.04 4.5458 0 4 0 2 19.66 3.91 4.5150 0 2 1 4 21.44 15.99 4.1446 2 2 0 4 21.79 4.91 4.0788 1 1 1 4 22.82 4.30 3.8961 -2 0 1 2 23.04 30.69 3.8602 -1 3 1 4 25.87 37.64 3.4441 1 3 1 4 26.03 3.47 3.4230 0 4 1 4 27.42 46.23 3.2528 2 4 0 4 28.26 4.40 3.1580 2 0 1 2 29.18 69.09 3.0601 3 1 0 4 29.47 3.16 3.0306 0 6 0 2 29.95 36.57 2.9832 2 2 1 4 30.21 2.25 2.9582 -2 4 1 4 30.38 4.02 2.9424 -1 5 1 4 30.71 1.03 2.9117 -3 1 1 4 32.40 10.90 2.7631 3 3 0 4 32.62 88.03 2.7452 1 5 1 4 33.79 7.41 2.6523 -3 3 1 4 34.16 5.21 2.6244 -1 1 2 4 34.24 46.70 2.6186 0 6 1 4 34.48 1.16 2.6009 0 0 2 2 35.34 4.91 2.5400 2 6 0 4 35.87 59.04 2.5035 -2 0 2 2 35.91 1.87 2.5006 0 2 2 4 37.25 1.47 2.4137 -2 2 2 4 37.60 3.76 2.3921 -2 6 1 4 38.11 3.51 2.3611 3 5 0 4 39.07 6.52 2.3058 -1 7 1 4 39.33 22.74 2.2909 -3 5 1 4 39.65 2.47 2.2729 0 8 0 2 40.24 11.87 2.2409 -4 2 1 4 40.65 15.08 2.2193 -3 1 2 4 40.89 10.42 2.2071 1 7 1 4 41.16 3.37 2.1929 -2 4 2 4 41.29 43.36 2.1866 2 6 1 4 43.12 2.26 2.0978 -3 3 2 4 43.23 20.97 2.0927 2 0 2 2 43.45 2.59 2.0828 0 8 1 4 43.68 1.50 2.0723 4 4 0 4 44.35 3.37 2.0426 2 8 0 4 44.42 1.18 2.0394 2 2 2 4 44.59 11.99 2.0323 3 5 1 4 45.53 2.14 1.9922 3 7 0 4 45.55 1.32 1.9914 1 5 2 4 45.90 1.46 1.9771 4 0 1 2 45.96 2.39 1.9744 1 9 0 4 45.98 1.50 1.9737 0 6 2 4 46.24 1.30 1.9632 -2 8 1 4 46.59 4.85 1.9495 -3 7 1 4 46.62 10.14 1.9480 -4 0 2 2 47.75 2.04 1.9048 -4 2 2 4 47.75 2.21 1.9048 -3 5 2 4 48.59 6.99 1.8736 -1 9 1 4 49.17 2.12 1.8529 5 1 0 4 49.36 1.80 1.8463 4 6 0 4 49.40 1.70 1.8448 2 8 1 4 49.59 2.68 1.8383 -4 6 1 4 50.14 1.55 1.8195 1 9 1 4 51.00 8.99 1.7906 -4 4 2 4 51.31 1.91 1.7805 5 3 0 4 53.36 2.33 1.7169 -2 2 3 4 53.54 5.15 1.7115 0 8 2 4 53.82 2.53 1.7032 0 2 3 4 53.90 5.66 1.7011 -1 3 3 4 54.12 1.02 1.6947 -3 7 2 4 54.53 8.56 1.6829 -5 1 2 4 54.53 2.35 1.6828 -2 8 2 4 54.92 3.90 1.6718 -5 5 1 4 55.49 31.35 1.6559 4 6 1 4 56.54 11.95 1.6276 1 11 0 4 56.59 1.81 1.6264 4 8 0 4 57.88 20.11 1.5932 -1 5 3 4 58.45 5.13 1.5790 4 0 2 2 58.58 4.33 1.5758 2 10 1 4 59.41 1.13 1.5557 4 2 2 4 59.56 5.83 1.5522 6 0 0 2 60.07 1.98 1.5402 1 9 2 4 61.16 13.79 1.5153 0 12 0 2 61.20 14.81 1.5144 -2 6 3 4 61.63 6.74 1.5050 0 6 3 4 61.80 3.22 1.5011 5 5 1 4 62.23 1.34 1.4917 4 8 1 4 62.24 5.27 1.4916 4 4 2 4 62.83 1.91 1.4791 -4 8 2 4 63.03 6.19 1.4749 -6 0 2 2 63.55 4.83 1.4640 -1 7 3 4 63.79 4.10 1.4591 3 11 0 4 65.28 2.90 1.4293 -4 10 1 4 66.67 1.92 1.4029 -1 11 2 4 66.76 30.17 1.4012 -6 6 1 4 67.23 1.28 1.3925 6 2 1 4 67.75 5.17 1.3830 -4 6 3 4 67.92 10.08 1.3801 5 1 2 4 68.96 6.09 1.3618 2 6 3 4 69.20 4.54 1.3577 1 11 2 4 69.69 2.05 1.3493 5 3 2 4 70.71 1.08 1.3323 -1 9 3 4 70.90 1.93 1.3292 -3 11 2 4 71.01 2.22 1.3275 -5 5 3 4 71.04 2.62 1.3269 7 1 0 4 71.09 1.23 1.3262 -6 6 2 4 71.29 2.39 1.3228 -1 1 4 4 72.15 2.28 1.3093 0 12 2 4 72.57 1.05 1.3026 3 5 3 4 72.71 8.52 1.3004 0 0 4 2 72.98 1.65 1.2963 -5 9 2 4 72.98 16.80 1.2963 -2 12 2 4 74.54 2.99 1.2730 -2 4 4 4 74.56 2.99 1.2728 -7 5 1 4 74.72 1.39 1.2704 -7 3 2 4 74.75 2.60 1.2700 4 12 0 4 75.43 1.09 1.2603 -2 10 3 4 75.62 1.55 1.2575 4 2 3 4 76.03 3.42 1.2517 -4 0 4 2 77.82 2.90 1.2273 2 12 2 4 77.98 1.58 1.2253 6 0 2 2 80.26 1.76 1.1960 -4 12 2 4 80.76 2.67 1.1900 2 0 4 2 81.44 7.60 1.1818 -5 11 2 4 82.92 1.27 1.1644 1 15 1 4 82.94 1.78 1.1642 8 0 0 2 87.19 1.16 1.1180 -6 0 4 2 87.27 2.53 1.1172 3 1 4 4 87.86 1.54 1.1112 7 9 0 4 89.68 4.00 1.0933 4 12 2 4 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.