Mg8(Mg2Al2)Al8Si12(O,OH)56 Artioli G, Fumagalli P, Poli S American Mineralogist 84 (1999) 1906-1914 The crystal structure of Mg8(Mg2Al2)Al8Si12(O,OH)56 pumpellyite and its relevance in ultramafic systems at high pressure _database_code_amcsd 0002335 CELL PARAMETERS: 8.5758 5.7295 18.5376 90.000 97.691 90.000 SPACE GROUP: P2_1/m X-RAY WAVELENGTH: 1.541838 Cell Volume: 902.652 Density (g/cm3): 3.191 MAX. ABS. INTENSITY / VOLUME**2: 2.535597599 RIR: 0.259 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 9.63 13.54 9.1854 0 0 2 2 18.68 1.34 4.7507 1 1 0 4 18.94 41.01 4.6852 -1 1 1 4 18.96 1.80 4.6801 1 0 3 2 19.33 31.26 4.5927 0 0 4 2 19.65 41.02 4.5182 1 1 1 4 20.91 2.58 4.2493 2 0 0 2 21.24 1.44 4.1838 0 1 3 4 21.69 1.23 4.0965 1 1 2 4 21.84 3.95 4.0698 -2 0 2 2 22.09 1.90 4.0235 2 0 1 2 22.82 7.10 3.8974 -1 1 3 4 24.23 77.20 3.6738 2 0 2 2 26.11 8.90 3.4131 2 1 0 4 26.60 21.86 3.3506 -2 0 4 2 26.87 2.79 3.3179 -2 1 2 4 27.10 1.10 3.2909 2 0 3 2 28.87 1.51 3.0929 0 1 5 4 28.87 5.77 3.0927 2 1 2 4 29.17 4.73 3.0618 0 0 6 2 30.51 30.08 2.9297 2 0 4 2 30.92 4.46 2.8923 -2 1 4 4 31.22 28.45 2.8647 0 2 0 2 31.30 13.21 2.8580 -3 0 1 2 31.79 1.66 2.8152 -3 0 2 2 31.89 100.00 2.8065 1 1 5 4 32.62 5.48 2.7450 3 0 1 2 32.75 9.67 2.7348 0 2 2 4 33.01 3.18 2.7132 -3 0 3 2 33.15 6.85 2.7023 -1 2 1 4 33.58 5.79 2.6691 1 2 1 4 33.71 45.54 2.6586 -2 0 6 2 34.38 1.16 2.6085 2 1 4 4 35.09 47.34 2.5575 -3 1 1 4 35.60 4.14 2.5220 -1 2 3 4 36.29 3.88 2.4756 3 1 1 4 36.78 1.98 2.4433 1 2 3 4 36.98 30.89 2.4307 0 2 4 4 37.29 2.20 2.4116 -2 1 6 4 37.40 1.88 2.4045 -3 0 5 2 37.88 58.73 2.3754 2 2 0 4 37.91 37.17 2.3736 -1 1 7 4 38.47 4.12 2.3400 2 0 6 2 39.91 28.85 2.2591 2 2 2 4 40.04 14.91 2.2521 3 1 3 4 40.49 3.19 2.2277 1 1 7 4 40.69 2.62 2.2171 -3 1 5 4 41.47 6.38 2.1774 -2 2 4 4 42.15 44.23 2.1438 -2 0 8 2 42.23 4.11 2.1401 1 2 5 4 42.36 15.59 2.1337 -4 0 2 2 42.55 3.32 2.1247 4 0 0 2 43.25 16.52 2.0919 0 2 6 4 44.22 17.96 2.0483 2 2 4 4 44.53 7.09 2.0349 -4 0 4 2 44.79 1.52 2.0233 -3 2 1 4 45.07 1.52 2.0117 4 0 2 2 45.16 1.06 2.0078 -2 1 8 4 45.53 1.08 1.9921 4 1 0 4 46.61 5.22 1.9487 -2 2 6 4 47.13 2.31 1.9285 -1 1 9 4 48.79 3.21 1.8665 -4 0 6 2 49.30 2.69 1.8484 1 3 1 4 50.35 6.00 1.8123 2 2 6 4 50.97 15.70 1.7918 0 2 8 4 51.48 1.03 1.7750 -2 0 10 2 52.30 1.86 1.7492 4 1 4 4 53.71 1.58 1.7065 4 2 0 4 55.38 6.50 1.6590 -4 2 4 4 55.84 1.11 1.6463 4 2 2 4 55.88 5.28 1.6455 4 0 6 2 55.98 5.00 1.6425 1 3 5 4 56.55 4.56 1.6275 -5 1 3 4 57.07 2.36 1.6138 -1 1 11 4 57.23 2.02 1.6096 2 0 10 2 57.30 2.47 1.6080 -4 1 8 4 58.09 5.74 1.5879 -3 3 1 4 59.80 1.92 1.5464 0 2 10 4 59.81 28.53 1.5463 4 2 4 4 60.04 2.26 1.5408 -1 3 7 4 60.47 8.17 1.5309 0 0 12 2 61.45 5.17 1.5088 -2 2 10 4 61.58 1.28 1.5061 3 3 3 4 62.23 1.14 1.4919 -4 0 10 2 63.51 2.61 1.4649 4 0 8 2 64.43 15.42 1.4462 -4 2 8 4 65.12 13.43 1.4324 0 4 0 2 66.65 3.03 1.4033 2 2 10 4 68.35 1.27 1.3725 6 0 2 2 70.89 1.15 1.3293 -4 0 12 2 71.27 1.20 1.3232 -4 2 10 4 74.84 1.11 1.2687 -5 3 3 4 75.21 2.11 1.2634 -6 2 4 4 75.37 1.40 1.2610 -2 4 6 4 79.23 1.08 1.2090 2 0 14 2 80.51 1.21 1.1930 0 2 14 4 80.68 1.25 1.1910 -2 4 8 4 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.