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.35, annealed at T = 700 C for t = 300 min _database_code_amcsd 0003969 CELL PARAMETERS: 9.7120 8.9434 5.2492 90.000 108.479 90.000 SPACE GROUP: P2_1/c X-RAY WAVELENGTH: 1.541838 Cell Volume: 432.428 Density (g/cm3): 3.545 MAX. ABS. INTENSITY / VOLUME**2: 11.56940624 RIR: 1.063 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 13.80 2.88 6.4165 1 1 0 4 19.27 10.65 4.6056 2 0 0 2 20.01 10.32 4.4363 -1 1 1 4 20.42 3.55 4.3500 0 1 1 4 26.49 1.62 3.3649 -1 2 1 4 26.80 15.62 3.3268 0 2 1 4 27.81 50.08 3.2083 2 2 0 4 29.61 100.00 3.0171 -2 2 1 4 30.64 39.67 2.9179 -3 1 1 4 30.79 46.50 2.9040 3 1 0 4 34.84 45.64 2.5749 -1 3 1 4 35.09 1.89 2.5577 0 3 1 4 36.08 49.73 2.4893 0 0 2 2 36.51 27.40 2.4607 2 2 1 4 37.33 4.43 2.4087 -2 3 1 4 38.01 3.13 2.3671 1 3 1 4 40.38 13.58 2.2339 3 1 1 4 40.42 3.56 2.2315 1 0 2 2 40.67 2.23 2.2182 -2 2 2 4 41.52 4.76 2.1750 0 2 2 4 41.72 8.37 2.1651 1 1 2 4 42.14 37.35 2.1444 -3 3 1 4 42.25 2.95 2.1388 3 3 0 4 42.76 7.82 2.1146 -4 2 1 4 43.84 1.84 2.0649 -3 2 2 4 44.24 3.41 2.0473 4 2 0 4 44.32 15.07 2.0439 -4 0 2 2 44.42 10.33 2.0396 0 4 1 4 45.07 4.73 2.0114 2 4 0 4 45.52 1.23 1.9926 -4 1 2 4 46.28 4.04 1.9616 -2 4 1 4 46.65 10.77 1.9469 2 0 2 2 48.71 1.58 1.8694 -4 3 1 4 49.99 3.07 1.8245 3 3 1 4 50.59 3.47 1.8044 5 1 0 4 51.13 1.80 1.7865 1 3 2 4 51.17 9.47 1.7851 2 2 2 4 51.29 2.02 1.7812 2 4 1 4 52.09 11.27 1.7559 1 5 0 4 52.93 2.97 1.7297 4 2 1 4 53.93 1.94 1.7002 -1 1 3 4 54.54 3.56 1.6825 -2 4 2 4 54.88 3.79 1.6730 -3 1 3 4 55.22 1.39 1.6634 0 4 2 4 55.34 4.69 1.6600 3 1 2 4 56.53 18.34 1.6280 -2 2 3 4 56.62 25.49 1.6256 -5 3 1 4 59.75 3.41 1.5476 -3 5 1 4 59.84 5.15 1.5455 3 5 0 4 59.93 6.64 1.5434 -6 0 2 2 60.29 5.94 1.5352 6 0 0 2 61.50 4.50 1.5078 -2 3 3 4 61.97 14.25 1.4975 -1 3 3 4 62.29 12.63 1.4906 0 6 0 2 62.84 2.35 1.4788 -3 3 3 4 62.90 1.20 1.4775 -1 5 2 4 63.09 5.28 1.4736 4 0 2 2 63.34 2.06 1.4683 2 4 2 4 63.80 3.14 1.4590 -6 2 2 4 64.11 1.62 1.4526 0 5 2 4 65.85 5.25 1.4184 -3 5 2 4 66.10 2.09 1.4136 3 5 1 4 67.06 1.86 1.3957 1 5 2 4 67.30 27.25 1.3913 5 3 1 4 68.09 3.21 1.3770 -2 4 3 4 68.20 4.92 1.3751 1 3 3 4 68.55 1.26 1.3690 -7 1 1 4 69.25 1.85 1.3568 2 2 3 4 69.40 1.79 1.3541 -7 0 2 2 70.31 6.55 1.3389 -7 1 2 4 70.68 4.68 1.3328 -5 3 3 4 70.69 1.38 1.3326 0 4 3 4 72.31 2.07 1.3066 -3 0 4 2 72.62 1.78 1.3019 7 1 0 4 73.16 1.19 1.2936 6 2 1 4 73.21 1.67 1.2929 -3 1 4 4 73.76 1.16 1.2845 3 1 3 4 73.81 1.69 1.2838 5 1 2 4 74.15 10.27 1.2788 0 6 2 4 74.25 4.27 1.2773 -4 0 4 2 75.60 1.23 1.2578 -2 2 4 4 76.06 1.18 1.2513 4 6 0 4 76.54 2.19 1.2446 0 0 4 2 77.37 1.49 1.2334 -3 5 3 4 77.76 6.98 1.2282 3 5 2 4 79.60 2.00 1.2043 -4 6 2 4 81.29 1.60 1.1835 2 6 2 4 82.20 1.11 1.1727 7 1 1 4 82.68 1.02 1.1672 -8 2 1 4 82.95 1.81 1.1640 -6 0 4 2 84.06 1.56 1.1514 8 0 0 2 89.62 1.46 1.0939 -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.