Pigeonite Domeneghetti M C, Zema M, Tazzoli V American Mineralogist 90 (2005) 1816-1823 Kinetics of Fe2+-Mg order-disorder in P2_1/c pigeonite Locality: Parana, Brazil Sample: N.13, annealed at T = 800 C for t = 60 min _database_code_amcsd 0003977 CELL PARAMETERS: 9.7075 8.9444 5.2461 90.000 108.485 90.000 SPACE GROUP: P2_1/c X-RAY WAVELENGTH: 1.541838 Cell Volume: 432.006 Density (g/cm3): 3.548 MAX. ABS. INTENSITY / VOLUME**2: 11.63042987 RIR: 1.067 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 13.80 3.52 6.4154 1 1 0 4 19.28 10.65 4.6033 2 0 0 2 20.02 9.24 4.4346 -1 1 1 4 20.43 3.63 4.3480 0 1 1 4 26.49 1.68 3.3643 -1 2 1 4 26.80 15.26 3.3261 0 2 1 4 27.81 48.77 3.2077 2 2 0 4 29.61 100.00 3.0165 -2 2 1 4 30.65 37.91 2.9167 -3 1 1 4 30.80 47.54 2.9028 3 1 0 4 34.23 1.01 2.6199 -1 0 2 2 34.85 45.08 2.5747 -1 3 1 4 35.09 1.98 2.5574 0 3 1 4 36.11 49.37 2.4877 0 0 2 2 36.53 27.14 2.4598 2 2 1 4 37.34 4.72 2.4084 -2 3 1 4 38.02 3.20 2.3667 1 3 1 4 40.40 12.85 2.2327 3 1 1 4 40.45 3.74 2.2301 1 0 2 2 40.69 2.05 2.2173 -2 2 2 4 41.54 4.39 2.1740 0 2 2 4 41.74 8.41 2.1639 1 1 2 4 42.15 37.26 2.1440 -3 3 1 4 42.26 2.76 2.1385 3 3 0 4 42.78 7.84 2.1139 -4 2 1 4 43.86 1.86 2.0641 -3 2 2 4 44.26 3.20 2.0465 4 2 0 4 44.34 14.68 2.0429 -4 0 2 2 44.42 9.76 2.0396 0 4 1 4 45.07 4.50 2.0114 2 4 0 4 45.55 1.31 1.9916 -4 1 2 4 46.28 4.23 1.9616 -2 4 1 4 46.68 10.67 1.9457 2 0 2 2 48.72 1.65 1.8690 -4 3 1 4 50.01 3.05 1.8239 3 3 1 4 50.61 3.33 1.8035 5 1 0 4 51.15 1.69 1.7858 1 3 2 4 51.20 9.17 1.7842 2 2 2 4 51.30 2.13 1.7810 2 4 1 4 52.08 11.20 1.7560 1 5 0 4 52.96 3.02 1.7290 4 2 1 4 53.96 1.81 1.6992 -1 1 3 4 54.55 3.39 1.6822 -2 4 2 4 54.91 3.57 1.6721 -3 1 3 4 55.23 1.42 1.6630 0 4 2 4 55.38 4.81 1.6590 3 1 2 4 56.56 18.21 1.6272 -2 2 3 4 56.64 25.44 1.6252 -5 3 1 4 59.75 3.34 1.5476 -3 5 1 4 59.84 5.14 1.5455 3 5 0 4 59.96 6.52 1.5427 -6 0 2 2 60.32 5.89 1.5344 6 0 0 2 61.53 4.74 1.5072 -2 3 3 4 62.00 13.96 1.4968 -1 3 3 4 62.28 12.69 1.4907 0 6 0 2 62.87 2.31 1.4782 -3 3 3 4 62.91 1.22 1.4773 -1 5 2 4 63.13 5.17 1.4727 4 0 2 2 63.36 1.93 1.4678 2 4 2 4 63.82 2.99 1.4584 -6 2 2 4 64.12 1.70 1.4524 0 5 2 4 65.86 5.09 1.4182 -3 5 2 4 66.11 2.03 1.4134 3 5 1 4 67.07 1.84 1.3954 1 5 2 4 67.33 27.02 1.3907 5 3 1 4 68.11 3.28 1.3766 -2 4 3 4 68.24 4.95 1.3744 1 3 3 4 68.58 1.17 1.3683 -7 1 1 4 69.29 1.81 1.3561 2 2 3 4 69.44 1.88 1.3535 -7 0 2 2 70.35 6.49 1.3383 -7 1 2 4 70.71 4.60 1.3323 -5 3 3 4 70.72 1.34 1.3321 0 4 3 4 72.36 2.13 1.3059 -3 0 4 2 72.66 1.79 1.3012 7 1 0 4 73.20 1.18 1.2930 6 2 1 4 73.25 1.60 1.2922 -3 1 4 4 73.82 1.10 1.2837 3 1 3 4 73.86 1.63 1.2830 5 1 2 4 74.15 10.18 1.2787 0 6 2 4 74.30 4.17 1.2766 -4 0 4 2 75.65 1.15 1.2571 -2 2 4 4 76.07 1.17 1.2512 4 6 0 4 76.60 2.11 1.2439 0 0 4 2 77.39 1.49 1.2331 -3 5 3 4 77.79 6.91 1.2278 3 5 2 4 79.61 2.02 1.2042 -4 6 2 4 81.31 1.62 1.1833 2 6 2 4 82.25 1.06 1.1721 7 1 1 4 82.72 1.02 1.1667 -8 2 1 4 83.00 1.72 1.1634 -6 0 4 2 84.12 1.53 1.1508 8 0 0 2 89.66 1.42 1.0934 -8 2 3 4 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.