Slawsonite Benna P, Nestola F, Ballaran T B, Balic-Zunic T, Lundegaard L F, Bruno E American Mineralogist 92 (2007) 1190-1199 The high-pressure structural configurations of Ca0.2Sr0.8Al2Si2O8 feldspar: The I-1-I2/c and I2/c-P2_1/c phase transitions Sample: P = 4.4 GPa Locality: synthetic _database_code_amcsd 0004409 CELL PARAMETERS: 8.2090 12.7800 14.0090 90.000 115.270 90.000 SPACE GROUP: I2/c X-RAY WAVELENGTH: 1.541838 Cell Volume: 1329.057 Density (g/cm3): 3.160 MAX. ABS. INTENSITY / VOLUME**2: 9.715583300 RIR: 1.001 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 13.86 28.10 6.3900 0 2 0 2 13.98 7.69 6.3342 0 0 2 2 15.61 16.09 5.6763 -1 1 2 4 19.73 18.62 4.4986 0 2 2 4 21.99 8.06 4.0424 -2 0 2 2 23.08 1.41 3.8533 1 1 2 4 23.98 9.87 3.7117 2 0 0 2 24.09 35.96 3.6948 1 3 0 4 25.19 25.90 3.5352 -1 3 2 4 26.08 17.62 3.4162 -2 2 2 4 26.39 66.16 3.3777 -1 1 4 4 27.80 100.00 3.2096 2 2 0 4 27.93 8.17 3.1950 0 4 0 2 28.17 48.25 3.1678 -2 0 4 2 28.18 47.17 3.1671 0 0 4 2 30.49 52.08 2.9319 1 3 2 4 31.36 23.45 2.8527 0 4 2 4 31.52 3.38 2.8382 -2 2 4 4 31.53 3.31 2.8377 0 2 4 4 33.11 39.14 2.7054 -1 3 4 4 33.52 4.08 2.6736 -3 1 2 4 35.73 9.92 2.5133 2 2 2 4 35.82 43.15 2.5066 -2 4 2 4 35.94 14.10 2.4985 -3 1 4 4 35.95 13.89 2.4978 1 1 4 4 37.00 5.83 2.4294 3 1 0 4 37.96 14.89 2.3704 -1 5 2 4 39.05 3.06 2.3066 -2 0 6 2 39.15 11.81 2.3010 -3 3 2 4 39.71 5.90 2.2697 -1 1 6 4 41.29 5.40 2.1865 -3 3 4 4 41.30 5.69 2.1860 1 3 4 4 41.63 6.60 2.1696 -2 2 6 4 41.82 18.24 2.1602 1 5 2 4 42.44 14.29 2.1300 0 6 0 2 43.57 7.98 2.0771 2 4 2 4 43.85 4.65 2.0646 -1 5 4 4 44.64 3.88 2.0301 -4 0 2 2 44.68 3.20 2.0282 -1 3 6 4 44.84 1.54 2.0212 -4 0 4 2 44.85 1.83 2.0207 2 0 4 2 44.90 5.89 2.0189 0 6 2 4 45.23 1.37 2.0048 0 2 6 4 45.23 7.26 2.0047 3 1 2 4 46.96 6.14 1.9348 -4 2 2 4 47.16 7.07 1.9271 -4 2 4 4 47.17 7.17 1.9266 2 2 4 4 48.09 4.38 1.8921 -3 3 6 4 48.30 3.94 1.8844 -2 6 2 4 48.77 3.39 1.8672 -3 5 2 4 49.09 11.07 1.8559 4 0 0 2 49.67 6.63 1.8356 -4 0 6 2 49.76 5.79 1.8324 3 3 2 4 50.22 7.61 1.8165 1 1 6 4 50.59 5.77 1.8044 -3 5 4 4 50.59 5.77 1.8042 1 5 4 4 51.72 3.50 1.7676 -2 6 4 4 51.72 3.75 1.7675 0 6 4 4 51.82 1.20 1.7643 -4 2 6 4 51.91 7.66 1.7615 0 4 6 4 52.14 1.22 1.7543 -1 7 2 4 52.24 19.10 1.7511 -2 0 8 2 53.48 6.62 1.7135 -4 4 2 4 53.66 2.33 1.7081 -4 4 4 4 53.67 2.36 1.7078 2 4 4 4 54.32 1.89 1.6889 -2 2 8 4 56.53 7.23 1.6280 -3 5 6 4 56.58 1.56 1.6267 -5 1 4 4 56.59 1.53 1.6263 3 1 4 4 56.87 3.28 1.6189 -1 7 4 4 57.39 1.39 1.6056 4 0 2 2 57.71 4.30 1.5975 0 8 0 2 57.87 1.34 1.5933 -5 1 2 4 58.02 6.22 1.5896 3 5 2 4 60.19 5.65 1.5374 -4 2 8 4 60.21 5.65 1.5371 0 2 8 4 60.49 3.42 1.5305 -5 3 4 4 60.50 3.27 1.5302 3 3 4 4 60.76 3.53 1.5244 2 2 6 4 61.88 3.24 1.4995 0 6 6 4 62.60 2.12 1.4840 -3 7 4 4 62.60 2.10 1.4839 1 7 4 4 63.10 5.68 1.4733 -5 3 6 4 63.28 3.55 1.4696 -4 6 2 4 63.39 11.81 1.4674 2 8 0 4 65.17 1.17 1.4315 -1 7 6 4 65.72 1.71 1.4207 -5 1 8 4 65.74 1.78 1.4204 1 1 8 4 66.35 5.08 1.4089 2 4 6 4 66.72 1.52 1.4020 5 3 0 4 66.86 4.47 1.3992 4 6 0 4 67.34 1.01 1.3905 -4 6 6 4 68.65 3.14 1.3671 -6 0 4 2 68.67 3.25 1.3668 4 0 4 2 69.21 1.51 1.3574 3 7 2 4 69.49 3.32 1.3527 -2 6 8 4 70.37 2.64 1.3379 -5 5 6 4 71.53 1.11 1.3190 -4 2 10 4 71.72 5.25 1.3159 -1 9 4 4 71.89 1.52 1.3133 -2 8 6 4 72.89 1.24 1.2978 -6 2 2 4 73.73 3.32 1.2851 -1 3 10 4 74.19 1.37 1.2782 -2 4 10 4 74.20 1.72 1.2780 0 10 0 2 74.49 1.46 1.2738 -6 0 8 2 74.51 1.42 1.2735 2 0 8 2 75.06 1.42 1.2654 5 3 2 4 75.92 4.20 1.2533 -4 8 4 4 75.93 4.32 1.2532 2 8 4 4 76.73 2.68 1.2420 -4 4 10 4 78.05 1.85 1.2243 -3 5 10 4 78.79 1.72 1.2147 6 2 0 4 78.80 1.47 1.2145 -5 3 10 4 80.57 1.08 1.1922 -1 5 10 4 81.57 1.21 1.1802 -2 8 8 4 82.71 1.01 1.1668 -2 6 10 4 83.85 2.62 1.1538 6 4 0 4 86.54 2.04 1.1248 -4 8 8 4 86.55 2.04 1.1246 0 8 8 4 89.26 1.08 1.0973 4 4 6 4 89.71 1.08 1.0930 2 6 8 4 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.