Donpeacorite Stimpfl M American Mineralogist 90 (2005) 155-161 The Mn, Mg-intracrystalline exchange reaction in donpeacorite (Mn0.54Ca0.03Mg1.43Si2O6) and its relation to the fractionation behavior of Mn in Fe, Mg-orthopyroxene Sample: quenched from 806 deg C ORD _database_code_amcsd 0003672 CELL PARAMETERS: 18.3559 8.8741 5.2256 90.000 90.000 90.000 SPACE GROUP: Pbca X-RAY WAVELENGTH: 1.541838 Cell Volume: 851.209 Density (g/cm3): 3.398 MAX. ABS. INTENSITY / VOLUME**2: 5.773839806 RIR: 0.553 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 13.88 1.19 6.3797 2 1 0 4 19.34 4.17 4.5890 4 0 0 2 20.01 2.05 4.4370 0 2 0 2 21.99 18.68 4.0426 2 1 1 8 24.55 1.48 3.6267 3 1 1 8 26.80 25.51 3.3263 1 2 1 8 27.76 18.25 3.2140 4 1 1 8 27.97 83.13 3.1898 4 2 0 4 28.12 100.00 3.1736 2 2 1 8 30.19 62.53 2.9601 3 2 1 8 30.92 86.78 2.8923 6 1 0 4 31.44 40.03 2.8454 5 1 1 8 32.90 42.73 2.7227 4 2 1 8 34.68 4.40 2.5867 1 0 2 4 35.20 62.20 2.5493 1 3 1 8 35.47 15.26 2.5305 6 1 1 8 35.73 63.55 2.5130 2 0 2 4 36.11 34.05 2.4875 5 2 1 8 36.24 21.34 2.4786 2 3 1 8 37.43 18.39 2.4029 3 0 2 4 37.92 1.01 2.3728 3 3 1 8 38.83 1.05 2.3194 3 1 2 8 39.78 11.23 2.2660 7 1 1 8 40.17 5.23 2.2451 4 3 1 8 40.36 2.22 2.2347 1 2 2 8 41.03 3.91 2.1997 4 1 2 8 42.46 38.83 2.1287 5 0 2 4 42.51 4.90 2.1266 6 3 0 4 42.80 10.50 2.1129 3 2 2 8 42.91 29.43 2.1077 5 3 1 8 43.68 8.61 2.0724 7 2 1 8 43.73 11.71 2.0700 5 1 2 8 44.31 5.42 2.0444 8 1 1 8 44.45 4.65 2.0381 8 2 0 4 44.65 13.68 2.0296 1 4 1 8 45.41 9.06 1.9974 4 4 0 4 45.50 14.07 1.9934 2 4 1 8 46.08 34.44 1.9697 6 3 1 8 46.65 1.30 1.9472 1 3 2 8 46.90 1.04 1.9371 3 4 1 8 47.91 7.60 1.8988 8 2 1 8 49.23 11.34 1.8509 7 0 2 4 50.32 6.36 1.8133 6 2 2 8 50.68 1.83 1.8011 4 3 2 8 50.79 8.66 1.7975 10 1 0 4 51.19 5.21 1.7846 5 4 1 8 52.52 16.64 1.7425 2 5 0 4 53.00 1.97 1.7278 5 3 2 8 53.50 7.17 1.7128 8 3 1 8 53.65 9.79 1.7082 7 2 2 8 54.20 7.23 1.6924 8 1 2 8 54.49 3.27 1.6840 1 4 2 8 54.62 5.38 1.6804 2 1 3 8 55.23 6.08 1.6631 2 4 2 8 55.60 3.71 1.6531 2 5 1 8 55.85 5.51 1.6462 3 1 3 8 56.45 1.05 1.6300 3 4 2 8 56.78 21.42 1.6214 0 2 3 4 56.81 1.15 1.6205 3 5 1 8 57.02 12.97 1.6151 1 2 3 8 57.31 9.90 1.6077 9 0 2 4 57.66 16.68 1.5986 9 3 1 8 57.81 1.72 1.5949 8 4 0 4 58.33 1.85 1.5820 9 1 2 8 58.49 1.36 1.5780 4 5 1 8 59.67 1.02 1.5495 5 1 3 8 60.29 8.98 1.5352 6 5 0 4 60.53 9.60 1.5297 12 0 0 2 60.60 3.36 1.5280 5 5 1 8 61.33 4.26 1.5116 9 2 2 8 62.04 27.68 1.4960 1 3 3 8 62.10 28.13 1.4945 10 3 1 8 62.72 9.58 1.4813 2 3 3 8 62.78 1.72 1.4801 6 4 2 8 62.83 24.64 1.4790 0 6 0 2 63.12 1.14 1.4729 6 5 1 8 65.37 12.65 1.4276 3 5 2 8 65.62 1.86 1.4227 10 2 2 8 65.70 2.66 1.4212 7 4 2 8 65.82 1.18 1.4189 1 6 1 8 66.03 2.04 1.4149 7 5 1 8 66.48 14.69 1.4064 11 0 2 4 66.81 26.80 1.4002 11 3 1 8 67.16 1.56 1.3937 12 2 1 8 67.41 2.66 1.3893 5 3 3 8 67.42 5.83 1.3890 11 1 2 8 67.98 3.64 1.3791 7 2 3 8 68.49 4.83 1.3700 0 4 3 4 68.70 1.81 1.3662 1 4 3 8 68.88 2.63 1.3632 5 5 2 8 69.79 9.46 1.3475 6 3 3 8 70.43 1.76 1.3369 3 4 3 8 71.78 13.51 1.3150 12 3 1 8 71.92 2.22 1.3128 4 4 3 8 72.10 1.20 1.3100 9 1 3 8 72.37 11.55 1.3057 12 1 2 8 72.54 5.15 1.3031 1 0 4 4 72.55 1.53 1.3030 13 2 1 8 72.57 3.03 1.3027 7 3 3 8 72.93 3.08 1.2971 14 1 0 4 73.45 4.30 1.2893 1 1 4 8 74.23 1.52 1.2776 3 0 4 4 74.34 1.13 1.2759 10 5 0 4 74.43 14.19 1.2746 2 6 2 8 75.48 6.80 1.2595 3 6 2 8 75.53 1.68 1.2589 14 1 1 8 75.69 7.18 1.2565 4 0 4 4 76.09 2.11 1.2509 10 1 3 8 76.65 1.24 1.2431 8 6 0 4 77.13 5.16 1.2367 8 5 2 8 77.48 2.38 1.2319 2 5 3 8 78.45 1.94 1.2191 5 1 4 8 78.51 2.22 1.2183 3 5 3 8 78.80 3.85 1.2146 5 6 2 8 80.63 7.42 1.1915 9 5 2 8 81.08 2.11 1.1860 5 2 4 8 82.61 1.27 1.1680 5 7 1 8 83.13 1.19 1.1620 10 3 3 8 83.36 1.42 1.1593 7 1 4 8 83.70 2.01 1.1554 7 6 2 8 84.44 2.49 1.1472 16 0 0 2 85.35 1.02 1.1373 9 4 3 8 85.54 3.17 1.1353 8 0 4 4 87.71 1.26 1.1127 12 2 3 8 87.91 1.46 1.1107 16 2 0 4 88.76 2.57 1.1023 11 5 2 8 89.00 2.36 1.0998 8 2 4 8 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.