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 904 deg C ORD _database_code_amcsd 0003670 CELL PARAMETERS: 18.3718 8.8836 5.2334 90.000 90.000 90.000 SPACE GROUP: Pbca X-RAY WAVELENGTH: 1.541838 Cell Volume: 854.131 Density (g/cm3): 3.359 MAX. ABS. INTENSITY / VOLUME**2: 5.789018341 RIR: 0.561 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 13.87 1.58 6.3859 2 1 0 4 19.33 2.94 4.5929 4 0 0 2 19.99 3.15 4.4418 0 2 0 2 21.96 14.69 4.0478 2 1 1 8 26.77 25.68 3.3304 1 2 1 8 27.72 18.41 3.2177 4 1 1 8 27.94 77.17 3.1929 4 2 0 4 28.08 100.00 3.1774 2 2 1 8 30.16 61.56 2.9635 3 2 1 8 30.89 87.70 2.8948 6 1 0 4 31.41 37.08 2.8484 5 1 1 8 32.86 41.93 2.7257 4 2 1 8 34.63 3.80 2.5906 1 0 2 4 35.16 59.91 2.5522 1 3 1 8 35.44 13.15 2.5331 6 1 1 8 35.68 63.45 2.5166 2 0 2 4 36.07 33.87 2.4902 5 2 1 8 36.20 19.62 2.4814 2 3 1 8 37.37 17.32 2.4062 3 0 2 4 37.87 1.21 2.3754 3 3 1 8 38.77 1.10 2.3225 3 1 2 8 39.74 10.35 2.2683 7 1 1 8 40.12 5.28 2.2476 4 3 1 8 40.30 1.67 2.2378 1 2 2 8 40.97 3.88 2.2026 4 1 2 8 42.41 37.50 2.1314 5 0 2 4 42.47 4.55 2.1286 6 3 0 4 42.74 9.28 2.1157 3 2 2 8 42.86 28.24 2.1100 5 3 1 8 43.63 8.48 2.0745 7 2 1 8 43.67 12.10 2.0726 5 1 2 8 44.26 5.20 2.0464 8 1 1 8 44.41 3.96 2.0400 8 2 0 4 44.59 13.17 2.0319 1 4 1 8 45.36 8.20 1.9994 4 4 0 4 45.45 13.97 1.9956 2 4 1 8 46.03 32.92 1.9718 6 3 1 8 46.58 1.13 1.9498 1 3 2 8 46.85 1.16 1.9392 3 4 1 8 47.86 7.46 1.9007 8 2 1 8 49.17 10.73 1.8531 7 0 2 4 50.25 6.38 1.8155 6 2 2 8 50.62 1.81 1.8034 4 3 2 8 50.74 8.40 1.7991 10 1 0 4 51.13 5.52 1.7865 5 4 1 8 52.46 16.11 1.7444 2 5 0 4 52.93 1.79 1.7299 5 3 2 8 53.44 7.25 1.7146 8 3 1 8 53.59 8.97 1.7102 7 2 2 8 54.13 7.21 1.6943 8 1 2 8 54.42 2.90 1.6861 1 4 2 8 54.53 4.90 1.6828 2 1 3 8 55.16 6.09 1.6652 2 4 2 8 55.53 3.39 1.6549 2 5 1 8 55.76 5.12 1.6486 3 1 3 8 56.38 1.28 1.6320 3 4 2 8 56.69 21.53 1.6237 0 2 3 4 56.74 1.05 1.6223 3 5 1 8 56.93 12.84 1.6174 1 2 3 8 57.24 9.57 1.6095 9 0 2 4 57.60 16.17 1.6002 9 3 1 8 57.75 1.96 1.5965 8 4 0 4 58.26 1.92 1.5837 9 1 2 8 58.42 1.40 1.5798 4 5 1 8 60.22 8.69 1.5367 6 5 0 4 60.47 9.29 1.5310 12 0 0 2 60.53 3.17 1.5297 5 5 1 8 61.26 4.01 1.5132 9 2 2 8 61.94 26.97 1.4980 1 3 3 8 62.04 27.38 1.4960 10 3 1 8 62.63 9.30 1.4833 2 3 3 8 62.70 1.71 1.4818 6 4 2 8 62.76 24.35 1.4806 0 6 0 2 65.28 12.37 1.4293 3 5 2 8 65.54 1.85 1.4242 10 2 2 8 65.62 2.37 1.4228 7 4 2 8 65.74 1.08 1.4204 1 6 1 8 65.95 1.94 1.4164 7 5 1 8 66.40 14.20 1.4078 11 0 2 4 66.74 26.56 1.4016 11 3 1 8 67.09 1.54 1.3950 12 2 1 8 67.31 2.51 1.3911 5 3 3 8 67.34 5.97 1.3905 11 1 2 8 67.88 3.62 1.3808 7 2 3 8 68.38 5.02 1.3719 0 4 3 4 68.60 1.91 1.3681 1 4 3 8 68.79 2.50 1.3648 5 5 2 8 69.69 9.22 1.3493 6 3 3 8 70.32 1.70 1.3387 3 4 3 8 71.70 13.43 1.3163 12 3 1 8 71.82 2.13 1.3145 4 4 3 8 72.00 1.05 1.3116 9 1 3 8 72.29 11.58 1.3070 12 1 2 8 72.42 5.16 1.3050 1 0 4 4 72.46 2.95 1.3043 7 3 3 8 72.47 1.49 1.3042 13 2 1 8 72.86 3.15 1.2982 14 1 0 4 73.32 4.30 1.2912 1 1 4 8 74.10 1.53 1.2795 3 0 4 4 74.26 1.20 1.2772 10 5 0 4 74.33 14.20 1.2761 2 6 2 8 75.37 6.68 1.2610 3 6 2 8 75.45 1.53 1.2600 14 1 1 8 75.57 6.95 1.2583 4 0 4 4 75.98 1.95 1.2524 10 1 3 8 76.56 1.18 1.2444 8 6 0 4 77.03 5.16 1.2380 8 5 2 8 77.36 2.29 1.2335 2 5 3 8 78.32 1.96 1.2208 5 1 4 8 78.39 2.15 1.2198 3 5 3 8 78.69 3.75 1.2160 5 6 2 8 80.53 7.25 1.1928 9 5 2 8 80.95 2.11 1.1877 5 2 4 8 82.50 1.21 1.1692 5 7 1 8 83.01 1.29 1.1633 10 3 3 8 83.22 1.41 1.1609 7 1 4 8 83.59 1.94 1.1567 7 6 2 8 84.35 2.41 1.1482 16 0 0 2 85.40 3.04 1.1368 8 0 4 4 87.59 1.28 1.1139 12 2 3 8 87.81 1.36 1.1117 16 2 0 4 88.64 2.53 1.1034 11 5 2 8 88.85 2.17 1.1013 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.