Na2Mg6Si8O22(OH)2 Camara F, Oberti R, Iezzi G, Della Ventura G Physics and Chemistry of Minerals 30 (2003) 570-581 The P2_1/m - C2/m phase transition in synthetic amphibole Na NaMg Mg5 Si8 O22 (OH)2: thermodynamic and crystal-chemical evaluation Sample: T = ambient _database_code_amcsd 0008832 CELL PARAMETERS: 9.6850 17.9200 5.2680 90.000 102.440 90.000 SPACE GROUP: P2_1/m X-RAY WAVELENGTH: 1.541838 Cell Volume: 892.823 Density (g/cm3): 2.969 MAX. ABS. INTENSITY / VOLUME**2: 4.879525188 RIR: 0.535 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 9.87 3.77 8.9600 0 2 0 2 10.58 53.08 8.3642 1 1 0 4 18.45 14.29 4.8098 -1 1 1 4 18.77 9.30 4.7288 2 0 0 2 19.82 31.01 4.4800 0 4 0 2 20.36 2.79 4.3615 -1 2 1 4 21.25 1.25 4.1821 2 2 0 4 21.94 14.25 4.0510 1 1 1 4 23.22 40.32 3.8309 -1 3 1 4 24.75 5.71 3.5979 -2 2 1 4 26.11 68.78 3.4130 1 3 1 4 26.60 1.59 3.3514 1 5 0 4 27.42 53.86 3.2522 2 4 0 4 28.75 78.59 3.1049 3 1 0 4 29.99 39.58 2.9791 2 2 1 4 30.30 4.82 2.9494 -3 1 1 4 30.71 26.40 2.9116 -1 5 1 4 32.10 24.32 2.7881 3 3 0 4 32.99 100.00 2.7149 1 5 1 4 33.51 17.62 2.6739 -3 3 1 4 34.73 29.39 2.5829 0 6 1 4 34.88 13.15 2.5722 0 0 2 2 35.01 4.28 2.5631 -1 6 1 4 35.97 70.38 2.4965 -2 0 2 2 36.36 2.15 2.4711 1 7 0 4 37.06 5.22 2.4259 1 6 1 4 38.01 5.49 2.3671 3 5 0 4 39.24 19.61 2.2960 -3 5 1 4 39.56 14.91 2.2780 -1 7 1 4 39.67 13.99 2.2721 -4 2 1 4 40.19 4.41 2.2437 -3 0 2 2 40.26 1.14 2.2400 0 8 0 2 40.52 16.04 2.2263 -3 1 2 4 41.40 2.93 2.1808 -2 4 2 4 41.42 11.47 2.1801 1 7 1 4 41.61 43.70 2.1702 2 6 1 4 43.06 6.00 2.1004 -3 3 2 4 43.38 1.06 2.0858 1 4 2 4 43.52 17.50 2.0793 2 0 2 2 44.65 6.72 2.0293 3 5 1 4 44.77 2.56 2.0244 2 8 0 4 45.65 1.17 1.9873 3 7 0 4 46.10 1.98 1.9692 1 5 2 4 46.22 7.17 1.9642 -4 0 2 2 46.62 3.19 1.9484 1 9 0 4 46.71 3.29 1.9447 -3 7 1 4 46.72 2.68 1.9443 4 2 1 4 47.83 3.39 1.9018 -3 5 2 4 48.25 2.00 1.8861 2 4 2 4 48.39 9.83 1.8811 5 1 0 4 49.27 6.80 1.8495 -1 9 1 4 49.36 1.49 1.8463 -4 6 1 4 50.62 2.70 1.8033 5 3 0 4 50.75 8.98 1.7989 -4 4 2 4 50.84 5.90 1.7959 1 9 1 4 50.96 2.80 1.7920 0 10 0 2 52.39 1.11 1.7466 -1 1 3 4 52.80 1.18 1.7339 1 7 2 4 53.87 9.01 1.7020 -5 1 2 4 54.31 4.84 1.6892 0 8 2 4 54.40 1.16 1.6867 -1 10 1 4 54.48 3.33 1.6842 0 2 3 4 54.50 8.67 1.6838 -1 3 3 4 55.08 4.83 1.6673 -2 8 2 4 55.44 2.54 1.6573 -3 9 1 4 55.45 35.61 1.6570 4 6 1 4 56.60 5.25 1.6261 4 8 0 4 57.40 8.73 1.6054 1 11 0 4 58.43 3.54 1.5794 4 0 2 2 58.56 4.41 1.5763 6 0 0 2 58.57 24.33 1.5761 -1 5 3 4 59.29 3.57 1.5587 2 10 1 4 60.91 2.19 1.5210 1 9 2 4 61.26 3.92 1.5131 -1 6 3 4 61.46 3.94 1.5086 5 5 1 4 61.80 16.49 1.5011 -2 6 3 4 62.08 7.77 1.4951 -6 0 2 2 62.16 17.69 1.4933 0 12 0 2 62.31 2.23 1.4901 2 2 3 4 62.34 5.44 1.4896 4 4 2 4 62.45 2.91 1.4871 0 6 3 4 62.93 2.17 1.4769 -4 8 2 4 63.95 1.29 1.4558 -2 10 2 4 64.36 6.34 1.4475 -1 7 3 4 64.37 3.72 1.4473 3 11 0 4 65.52 2.25 1.4247 -4 10 1 4 65.86 2.27 1.4182 -6 4 2 4 66.01 37.42 1.4153 -6 6 1 4 66.50 1.34 1.4060 6 2 1 4 67.49 1.27 1.3878 5 0 2 2 67.72 13.53 1.3837 5 1 2 4 67.90 2.80 1.3804 -4 6 3 4 69.54 3.95 1.3518 5 3 2 4 69.74 5.11 1.3483 2 6 3 4 69.81 3.03 1.3473 7 1 0 4 70.24 3.37 1.3401 1 11 2 4 70.80 2.56 1.3308 -5 5 3 4 71.58 1.38 1.3183 -3 11 2 4 71.61 1.50 1.3178 7 3 0 4 71.69 2.99 1.3165 -1 9 3 4 71.77 1.71 1.3152 -7 1 2 4 71.80 2.35 1.3148 -2 0 4 2 71.93 1.46 1.3127 -1 0 4 2 72.15 2.74 1.3092 -1 1 4 4 72.93 1.80 1.2971 -5 9 2 4 73.30 6.70 1.2915 0 12 2 4 73.44 5.17 1.2894 -7 5 1 4 73.46 1.15 1.2891 6 8 0 4 73.55 1.82 1.2878 -7 3 2 4 73.66 7.47 1.2861 0 0 4 2 73.72 3.63 1.2851 6 6 1 4 73.96 18.36 1.2816 -2 12 2 4 74.27 1.27 1.2770 -3 9 3 4 75.26 1.77 1.2626 4 12 0 4 75.33 1.61 1.2616 -2 4 4 4 75.99 1.17 1.2523 4 2 3 4 76.28 3.29 1.2483 -4 0 4 2 76.96 1.37 1.2389 0 10 3 4 77.30 1.36 1.2344 5 11 0 4 77.55 1.64 1.2310 6 0 2 2 78.68 1.17 1.2161 -7 7 1 4 78.93 2.27 1.2129 2 12 2 4 80.00 1.24 1.1993 -6 6 3 4 80.40 1.06 1.1944 1 4 4 4 81.06 1.04 1.1863 2 14 1 4 81.40 1.94 1.1822 8 0 0 2 81.63 7.98 1.1794 -5 11 2 4 81.72 2.01 1.1784 2 0 4 2 82.90 1.65 1.1646 4 6 3 4 84.35 1.06 1.1482 1 15 1 4 87.19 2.38 1.1180 7 9 0 4 87.58 1.23 1.1140 5 13 0 4 88.18 3.01 1.1080 3 1 4 4 89.31 1.05 1.0969 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.