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 = 0.0001 GPa Locality: synthetic _database_code_amcsd 0004407 CELL PARAMETERS: 8.3700 12.9670 14.2620 90.580 115.550 90.440 SPACE GROUP: I-1 X-RAY WAVELENGTH: 1.541838 Cell Volume: 1396.342 Density (g/cm3): 3.008 MAX. ABS. INTENSITY / VOLUME**2: 5.217309766 RIR: 0.565 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 13.49 2.05 6.5631 -1 1 0 2 13.66 44.54 6.4826 0 2 0 2 13.77 15.58 6.4329 0 0 2 2 15.30 9.73 5.7923 -1 -1 2 2 15.34 12.86 5.7760 -1 1 2 2 17.44 1.00 5.0844 -1 -2 1 2 19.29 23.82 4.6006 0 -2 2 2 19.59 12.69 4.5326 0 2 2 2 21.55 22.24 4.1241 -2 0 2 2 21.93 1.03 4.0537 0 1 3 2 22.85 1.23 3.8911 1 1 2 2 23.29 1.31 3.8198 -1 -2 3 2 23.56 18.81 3.7754 2 0 0 2 23.58 34.56 3.7726 -1 3 0 2 23.86 40.89 3.7294 1 3 0 2 24.74 24.28 3.5984 -1 -3 2 2 24.82 20.88 3.5867 -1 3 2 2 25.54 18.84 3.4876 -2 2 2 2 25.66 21.01 3.4717 -2 -2 2 2 25.85 58.03 3.4466 -1 -1 4 2 25.99 62.64 3.4287 -1 1 4 2 27.17 100.00 3.2816 -2 2 0 2 27.50 93.99 3.2437 2 2 0 2 27.52 15.49 3.2413 0 4 0 2 27.60 93.05 3.2315 -2 0 4 2 27.74 92.83 3.2165 0 0 4 2 29.78 51.95 2.9999 1 -3 2 2 30.30 52.94 2.9502 1 3 2 2 30.70 34.03 2.9121 0 -4 2 2 30.85 7.90 2.8985 0 -2 4 2 30.88 2.76 2.8962 -2 -2 4 2 30.96 2.04 2.8880 -2 2 4 2 31.08 16.07 2.8775 0 4 2 2 31.23 1.96 2.8644 0 2 4 2 32.26 1.88 2.7751 2 0 2 2 32.39 37.48 2.7641 -1 -3 4 2 32.73 38.04 2.7365 -1 3 4 2 32.81 3.71 2.7296 -3 1 2 2 32.93 2.91 2.7203 -3 -1 2 2 34.96 8.76 2.5663 2 -2 2 2 35.13 39.56 2.5547 -2 4 2 2 35.19 13.67 2.5501 -3 1 4 2 35.22 16.40 2.5483 -3 -1 4 2 35.30 16.70 2.5426 1 -1 4 2 35.31 46.18 2.5422 -2 -4 2 2 35.39 7.91 2.5363 2 2 2 2 35.53 12.25 2.5265 1 1 4 2 36.27 5.94 2.4770 -3 1 0 2 36.45 5.75 2.4647 3 1 0 2 36.80 2.16 2.4425 1 5 0 2 37.32 12.35 2.4095 -1 -5 2 2 37.41 13.74 2.4036 -1 5 2 2 38.28 12.22 2.3512 -3 3 2 2 38.30 2.27 2.3501 -2 0 6 2 38.58 11.08 2.3335 -3 -3 2 2 38.93 8.51 2.3132 -1 -1 6 2 39.11 8.81 2.3034 -1 1 6 2 40.37 3.55 2.2344 1 -3 4 2 40.46 6.62 2.2296 -3 3 4 2 40.52 5.16 2.2261 -3 -3 4 2 40.73 4.63 2.2151 -2 -2 6 2 40.86 15.46 2.2084 1 -5 2 2 40.95 6.95 2.2038 -2 2 6 2 40.99 5.14 2.2021 1 3 4 2 41.51 17.39 2.1752 1 5 2 2 41.80 30.84 2.1609 0 6 0 2 42.51 1.19 2.1264 -3 -1 6 2 42.54 14.72 2.1252 2 -4 2 2 42.92 4.34 2.1073 -1 -5 4 2 43.26 6.81 2.0913 2 4 2 2 43.36 6.59 2.0869 -1 5 4 2 43.68 3.89 2.0722 -1 -3 6 2 43.77 10.97 2.0684 -4 0 2 2 43.91 5.76 2.0620 -4 0 4 2 44.01 7.56 2.0577 0 -6 2 2 44.15 4.25 2.0512 -1 3 6 2 44.17 2.89 2.0504 2 0 4 2 44.29 1.64 2.0449 0 -2 6 2 44.39 7.96 2.0409 3 -1 2 2 44.42 6.99 2.0392 0 6 2 2 44.62 8.02 2.0310 3 1 2 2 45.92 4.25 1.9762 -4 2 2 2 46.13 9.29 1.9679 -4 2 4 2 46.20 4.89 1.9649 -4 -2 2 2 46.21 6.33 1.9644 2 -2 4 2 46.27 9.20 1.9622 -4 -2 4 2 46.69 8.35 1.9456 2 2 4 2 47.07 5.95 1.9308 -3 -3 6 2 47.21 4.19 1.9253 -3 3 6 2 47.40 2.68 1.9180 -2 6 2 2 47.61 5.04 1.9101 -2 -6 2 2 47.70 3.96 1.9064 -3 5 2 2 48.00 1.45 1.8954 -2 4 6 2 48.13 3.56 1.8906 -3 -5 2 2 48.21 25.10 1.8877 4 0 0 2 48.60 15.69 1.8733 -4 0 6 2 48.63 6.76 1.8721 3 -3 2 2 49.27 6.79 1.8494 3 3 2 2 49.32 8.88 1.8477 1 -1 6 2 49.37 5.54 1.8458 1 -5 4 2 49.56 10.32 1.8393 1 1 6 2 49.61 6.29 1.8376 -3 5 4 2 49.70 4.65 1.8344 -3 -5 4 2 50.25 5.82 1.8155 1 5 4 2 50.53 3.69 1.8062 0 -6 4 2 50.58 1.02 1.8044 -1 7 0 2 50.69 8.60 1.8008 0 -4 6 2 50.74 4.97 1.7992 -2 -6 4 2 50.90 1.04 1.7941 3 5 0 2 50.92 3.20 1.7933 -2 6 4 2 51.25 45.42 1.7826 -2 0 8 2 51.28 5.29 1.7814 0 6 4 2 51.37 2.25 1.7788 -1 7 2 2 51.45 9.15 1.7762 0 4 6 2 52.23 9.22 1.7515 -4 4 2 2 52.40 4.31 1.7460 2 -4 4 2 52.48 3.28 1.7438 -4 4 4 2 52.73 8.36 1.7359 -4 -4 2 2 52.73 2.21 1.7359 -4 -4 4 2 53.26 2.57 1.7198 2 4 4 2 53.31 2.39 1.7185 2 -6 2 2 53.45 3.48 1.7144 -2 2 8 2 55.34 2.07 1.6602 -5 1 4 2 55.35 8.10 1.6599 -3 -5 6 2 55.44 1.89 1.6572 -5 -1 4 2 55.56 7.72 1.6542 -3 5 6 2 55.56 1.80 1.6541 3 -1 4 2 55.69 4.06 1.6505 -1 -7 4 2 55.81 2.26 1.6472 3 1 4 2 56.20 3.25 1.6368 -1 7 4 2 56.41 1.66 1.6312 4 0 2 2 56.60 6.45 1.6262 3 -5 2 2 56.65 1.79 1.6248 -5 1 2 2 56.81 10.37 1.6206 0 8 0 2 56.81 1.32 1.6205 -5 -1 2 2 57.00 1.55 1.6158 -3 -3 8 2 57.00 1.14 1.6157 -4 0 8 2 57.55 8.04 1.6015 3 5 2 2 58.85 6.80 1.5691 -4 -2 8 2 58.96 6.84 1.5665 -4 2 8 2 58.97 7.66 1.5664 0 -2 8 2 59.09 3.07 1.5635 -5 3 4 2 59.16 4.08 1.5617 3 -3 4 2 59.40 2.97 1.5561 -5 -3 4 2 59.42 6.53 1.5555 0 2 8 2 59.54 4.12 1.5527 2 -2 6 2 59.89 3.32 1.5445 3 3 4 2 60.05 3.32 1.5407 2 2 6 2 60.36 2.50 1.5335 0 -6 6 2 61.07 3.83 1.5174 1 -7 4 2 61.36 5.44 1.5109 0 6 6 2 61.41 2.72 1.5098 -3 7 4 2 61.52 2.61 1.5073 -3 -7 4 2 61.68 7.99 1.5038 -5 3 6 2 61.78 6.78 1.5016 -4 6 2 2 61.81 9.15 1.5009 -5 -3 6 2 61.86 1.09 1.5000 2 -6 4 2 62.01 16.16 1.4965 -2 8 0 2 62.06 1.31 1.4956 -4 6 4 2 62.14 2.31 1.4938 1 7 4 2 62.46 5.94 1.4869 -4 -6 2 2 62.67 1.62 1.4824 3 7 0 2 62.69 14.76 1.4821 2 8 0 2 63.02 1.20 1.4751 2 6 4 2 63.63 2.61 1.4623 -1 -7 6 2 64.25 2.70 1.4498 -5 -1 8 2 64.26 2.57 1.4496 -5 1 8 2 64.53 2.02 1.4442 1 -1 8 2 64.78 2.06 1.4391 1 1 8 2 64.79 7.89 1.4390 2 -4 6 2 65.13 1.09 1.4322 0 4 8 2 65.16 1.80 1.4316 -5 3 0 2 65.19 5.48 1.4311 -4 6 0 2 65.76 7.30 1.4201 2 4 6 2 65.78 2.24 1.4197 5 3 0 2 65.84 1.01 1.4185 -1 9 0 2 65.99 2.25 1.4156 -4 6 6 2 66.01 1.10 1.4153 -4 -6 6 2 66.17 5.39 1.4123 4 6 0 2 66.20 2.41 1.4116 1 9 0 2 67.17 10.18 1.3936 -6 0 4 2 67.44 1.48 1.3886 3 -7 2 2 67.50 9.46 1.3876 4 0 4 2 67.81 4.94 1.3820 -2 -6 8 2 67.82 1.31 1.3819 1 -3 8 2 68.25 1.40 1.3743 -4 0 10 2 68.59 3.99 1.3683 -2 6 8 2 68.65 1.80 1.3671 3 7 2 2 68.78 3.92 1.3649 -5 5 6 2 68.96 1.16 1.3618 3 -1 6 2 68.99 4.11 1.3612 -5 -5 6 2 69.24 1.29 1.3570 3 1 6 2 69.88 2.85 1.3461 -4 -2 10 2 70.08 1.30 1.3427 -4 2 10 2 70.15 1.47 1.3415 5 -1 2 2 70.22 8.63 1.3404 -1 -9 4 2 70.29 1.23 1.3392 -2 -8 6 2 70.40 1.33 1.3373 5 1 2 2 70.79 6.45 1.3310 -1 9 4 2 70.90 2.24 1.3292 -2 8 6 2 71.20 2.54 1.3243 -6 2 2 2 71.22 2.08 1.3241 1 -7 6 2 71.57 2.39 1.3184 -6 -2 2 2 72.04 4.89 1.3110 -1 -3 10 2 72.40 2.89 1.3054 -2 -4 10 2 72.56 1.02 1.3028 1 7 6 2 72.69 4.27 1.3009 -1 3 10 2 72.74 3.84 1.3000 -6 0 8 2 72.97 4.66 1.2965 0 10 0 2 73.10 1.92 1.2945 -2 4 10 2 73.24 1.21 1.2924 2 -6 6 2 73.25 4.86 1.2922 2 0 8 2 73.32 1.49 1.2912 5 -3 2 2 73.79 1.50 1.2841 -3 9 2 2 73.94 5.40 1.2819 2 -8 4 2 74.05 1.95 1.2802 5 3 2 2 74.25 6.46 1.2773 -4 8 4 2 74.61 1.70 1.2720 2 6 6 2 74.67 8.13 1.2711 -4 -8 4 2 74.88 4.38 1.2681 -4 -4 10 2 75.06 1.78 1.2656 0 -2 10 2 75.21 1.04 1.2633 -6 -4 6 2 75.27 4.38 1.2624 -4 4 10 2 75.36 7.94 1.2612 2 8 4 2 75.55 1.46 1.2585 6 0 0 2 75.56 1.07 1.2584 0 2 10 2 76.09 2.21 1.2509 -6 4 2 2 76.12 1.93 1.2506 -3 -5 10 2 76.79 3.05 1.2412 -3 5 10 2 76.81 1.65 1.2410 -6 -4 2 2 76.91 2.40 1.2396 -5 -3 10 2 76.99 2.92 1.2385 -6 2 0 2 77.09 2.35 1.2372 -5 3 10 2 77.30 1.40 1.2343 -1 -9 6 2 77.45 2.47 1.2323 6 2 0 2 77.53 1.27 1.2313 -2 10 0 2 78.31 1.22 1.2210 -1 9 6 2 78.53 1.02 1.2181 -1 -5 10 2 79.53 1.44 1.2053 -2 -8 8 2 79.57 1.30 1.2048 -2 -10 4 2 79.58 1.77 1.2046 -1 5 10 2 79.79 1.97 1.2020 0 -4 10 2 79.87 1.08 1.2009 3 5 6 2 80.50 2.43 1.1931 -2 8 8 2 80.51 2.71 1.1930 -6 0 10 2 80.56 1.78 1.1924 -2 -6 10 2 80.78 1.71 1.1898 0 4 10 2 81.32 1.27 1.1832 1 -1 10 2 81.59 2.50 1.1799 -2 6 10 2 81.61 1.47 1.1798 1 1 10 2 81.71 4.41 1.1785 -6 4 0 2 82.61 4.12 1.1679 6 4 0 2 82.71 1.16 1.1667 -6 -6 4 2 84.18 3.38 1.1502 0 -8 8 2 84.52 1.47 1.1464 -5 -7 8 2 84.53 3.19 1.1463 -4 -8 8 2 84.90 3.91 1.1422 -4 8 8 2 85.74 3.16 1.1332 0 8 8 2 87.00 1.32 1.1200 -6 -4 10 2 87.04 2.11 1.1196 4 -4 6 2 87.27 1.86 1.1172 2 -6 8 2 87.50 1.60 1.1148 -6 6 8 2 87.67 1.48 1.1131 -6 -6 8 2 87.71 1.12 1.1127 -3 -9 8 2 88.22 2.01 1.1076 4 4 6 2 88.88 1.92 1.1010 2 6 8 2 89.17 2.09 1.0982 3 -9 4 2 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.