Sursassite Gottschalk M, Fockenberg T, Grevel K-D, Wunder B, Wirth R, Schreyer W, Maresch W V European Journal of Mineralogy 12 (2000) 935-945 Crystal structure of the high-pressure phase Mg4(MgAl)Al4[Si6O21/(OH)7]: an analogue of sursassite Sample: A53 _database_code_amcsd 0006842 CELL PARAMETERS: 8.5424 5.7117 9.6484 90.000 108.298 90.000 SPACE GROUP: P2_1/m X-RAY WAVELENGTH: 1.541838 Cell Volume: 446.958 Density (g/cm3): 3.270 MAX. ABS. INTENSITY / VOLUME**2: 4.615518045 RIR: 0.460 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 9.66 9.54 9.1605 0 0 1 2 19.00 30.19 4.6699 1 1 0 4 19.03 1.43 4.6642 -1 0 2 2 19.38 25.80 4.5803 0 0 2 2 19.72 26.22 4.5029 -1 1 1 4 20.99 2.43 4.2325 -2 0 1 2 21.92 1.30 4.0552 2 0 0 2 22.89 2.28 3.8859 1 1 1 4 24.32 66.16 3.6595 -2 0 2 2 25.15 1.43 3.5406 1 0 2 2 26.21 10.12 3.4006 -2 1 1 4 26.69 17.91 3.3402 2 0 1 2 26.96 3.80 3.3066 2 1 0 4 27.80 1.13 3.2092 -1 0 3 2 28.98 7.94 3.0813 -2 1 2 4 29.25 4.24 3.0535 0 0 3 2 30.63 25.43 2.9192 -2 0 3 2 31.02 6.39 2.8834 2 1 1 4 31.32 25.08 2.8558 0 2 0 2 31.42 15.47 2.8469 -3 0 1 2 31.99 97.12 2.7978 -1 1 3 4 32.76 9.07 2.7341 -3 0 2 2 32.85 6.71 2.7264 0 2 1 4 33.14 7.19 2.7035 3 0 0 2 33.26 10.72 2.6937 1 2 0 4 33.69 8.83 2.6605 -1 2 1 4 33.81 43.60 2.6511 2 0 2 2 34.50 3.14 2.5993 -2 1 3 4 35.22 48.11 2.5479 -3 1 1 4 35.71 6.95 2.5143 1 2 1 4 36.43 1.95 2.4661 -3 1 2 4 36.84 1.99 2.4397 -3 0 3 2 36.91 4.08 2.4356 -1 2 2 4 37.10 32.32 2.4234 0 2 2 4 37.40 3.55 2.4047 2 1 2 4 37.53 3.50 2.3967 3 0 1 2 38.01 58.75 2.3673 -2 2 1 4 38.01 41.25 2.3672 1 1 3 4 38.61 3.93 2.3321 -2 0 4 2 39.34 1.36 2.2901 0 0 4 2 40.05 31.04 2.2514 -2 2 2 4 40.19 15.82 2.2436 -3 1 3 4 40.59 2.46 2.2229 1 2 2 4 40.62 1.83 2.2210 -1 1 4 4 40.83 2.81 2.2100 3 1 1 4 41.61 8.70 2.1706 2 2 1 4 42.27 52.56 2.1380 2 0 3 2 42.37 4.24 2.1334 -1 2 3 4 42.53 20.24 2.1255 -4 0 1 2 42.73 4.94 2.1162 -4 0 2 2 43.38 18.79 2.0858 0 2 3 4 44.38 20.76 2.0414 -2 2 3 4 44.69 8.38 2.0276 4 0 0 2 44.96 1.97 2.0162 -3 2 1 4 45.26 2.27 2.0037 -4 0 3 2 45.29 2.39 2.0023 2 1 3 4 45.98 1.39 1.9736 -3 1 4 4 46.75 7.89 1.9430 2 2 2 4 47.26 1.67 1.9233 1 1 4 4 47.27 2.01 1.9230 1 2 3 4 48.96 4.60 1.8603 4 0 1 2 49.47 2.61 1.8426 -1 3 1 4 49.48 1.92 1.8422 -1 2 4 4 50.09 2.39 1.8211 -1 1 5 4 50.53 9.42 1.8064 -2 2 4 4 50.66 2.22 1.8020 -3 0 5 2 51.12 23.15 1.7866 0 2 4 4 51.63 1.35 1.7703 2 0 4 2 51.68 1.61 1.7688 4 1 1 4 52.52 4.49 1.7425 -4 1 4 4 52.72 1.41 1.7363 -2 3 1 4 53.92 2.80 1.7003 -4 2 2 4 55.29 1.05 1.6614 1 2 4 4 55.59 12.66 1.6533 4 2 0 4 56.07 3.43 1.6403 -4 2 3 4 56.10 7.85 1.6393 -4 0 5 2 56.17 10.51 1.6374 -1 3 3 4 56.78 8.84 1.6214 -5 1 1 4 57.24 6.55 1.6095 1 1 5 4 57.43 6.32 1.6046 -2 0 6 2 57.49 4.22 1.6030 4 1 2 4 58.30 13.53 1.5826 -3 3 1 4 58.58 2.18 1.5757 -4 1 5 4 59.80 1.20 1.5464 2 3 2 4 59.99 3.75 1.5421 0 2 5 4 60.05 74.24 1.5407 -4 2 4 4 60.24 4.92 1.5363 1 3 3 4 60.65 1.35 1.5269 3 0 4 2 60.65 19.49 1.5268 0 0 6 2 61.06 1.50 1.5175 5 0 1 2 61.64 15.56 1.5047 2 2 4 4 61.81 2.90 1.5010 -3 3 3 4 62.28 1.77 1.4908 3 3 1 4 62.43 3.63 1.4876 4 0 3 2 63.77 7.26 1.4596 -4 0 6 2 63.99 2.41 1.4551 -5 2 1 4 64.42 3.18 1.4464 1 2 5 4 64.65 46.25 1.4417 4 2 2 4 65.35 40.66 1.4279 0 4 0 2 66.88 14.75 1.3989 -2 2 6 4 68.02 2.07 1.3783 -2 0 7 2 68.66 5.13 1.3670 -6 0 4 2 68.88 1.09 1.3632 0 4 2 4 69.54 1.22 1.3517 6 0 0 2 69.86 2.10 1.3464 0 2 6 4 70.84 3.98 1.3302 -2 4 2 4 70.89 1.81 1.3294 2 2 5 4 71.12 5.28 1.3255 4 0 4 2 71.51 4.19 1.3193 4 2 3 4 71.51 1.69 1.3193 -4 3 4 4 71.91 1.70 1.3130 2 4 1 4 72.19 3.26 1.3086 0 0 7 2 72.74 1.72 1.3001 -6 0 5 2 72.77 4.11 1.2995 3 1 5 4 73.89 2.32 1.2827 -2 4 3 4 74.31 2.01 1.2764 -3 4 1 4 74.48 3.25 1.2740 -6 2 2 4 75.05 1.09 1.2657 -3 4 2 4 75.14 5.60 1.2643 -5 3 1 4 75.53 12.32 1.2588 -6 2 1 4 75.54 2.40 1.2586 1 3 5 4 75.65 7.50 1.2572 2 4 2 4 75.76 1.71 1.2555 4 3 2 4 76.49 1.15 1.2454 5 1 3 4 76.79 1.58 1.2413 -2 2 7 4 77.40 5.09 1.2330 -6 2 4 4 78.24 2.96 1.2218 6 2 0 4 78.39 1.22 1.2198 -6 0 6 2 78.78 1.00 1.2149 -5 3 4 4 79.52 6.76 1.2054 -2 0 8 2 80.25 4.09 1.1962 -5 1 7 4 80.78 7.49 1.1897 0 2 7 4 80.97 8.17 1.1874 2 4 3 4 81.14 1.70 1.1853 -4 4 1 4 81.24 1.13 1.1842 -4 2 7 4 81.28 1.63 1.1837 -4 4 2 4 82.65 2.14 1.1675 4 4 0 4 82.77 1.29 1.1661 -4 0 8 2 85.56 1.48 1.1350 -6 0 7 2 85.66 1.33 1.1340 -7 1 5 4 85.78 1.19 1.1327 4 4 1 4 86.56 1.18 1.1245 -5 2 7 4 86.82 2.12 1.1218 -6 2 6 4 89.73 2.78 1.0928 3 3 5 4 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.