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 = 10 min _database_code_amcsd 0003963 CELL PARAMETERS: 9.7093 8.9417 5.2479 90.000 108.507 90.000 SPACE GROUP: P2_1/c X-RAY WAVELENGTH: 1.541838 Cell Volume: 432.048 Density (g/cm3): 3.546 MAX. ABS. INTENSITY / VOLUME**2: 11.42174346 RIR: 1.049 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 13.81 2.22 6.4145 1 1 0 4 19.28 10.60 4.6036 2 0 0 2 20.02 11.82 4.4356 -1 1 1 4 20.42 3.57 4.3484 0 1 1 4 24.95 1.22 3.5683 1 1 1 4 26.49 1.57 3.3643 -1 2 1 4 26.81 16.59 3.3258 0 2 1 4 27.82 52.51 3.2073 2 2 0 4 29.61 100.00 3.0167 -2 2 1 4 30.64 41.99 2.9175 -3 1 1 4 30.80 45.86 2.9028 3 1 0 4 34.85 46.46 2.5744 -1 3 1 4 35.09 1.85 2.5570 0 3 1 4 36.10 50.00 2.4883 0 0 2 2 36.53 27.28 2.4596 2 2 1 4 37.34 4.39 2.4083 -2 3 1 4 38.03 3.12 2.3663 1 3 1 4 40.40 14.48 2.2326 3 1 1 4 40.44 3.47 2.2304 1 0 2 2 40.68 2.49 2.2178 -2 2 2 4 41.53 5.25 2.1742 0 2 2 4 41.74 8.23 2.1641 1 1 2 4 42.15 37.70 2.1440 -3 3 1 4 42.27 3.12 2.1382 3 3 0 4 42.77 7.70 2.1142 -4 2 1 4 43.85 1.85 2.0647 -3 2 2 4 44.26 3.69 2.0465 4 2 0 4 44.32 15.39 2.0437 -4 0 2 2 44.43 10.92 2.0391 0 4 1 4 45.09 5.14 2.0109 2 4 0 4 45.53 1.20 1.9924 -4 1 2 4 46.29 3.89 1.9613 -2 4 1 4 46.68 10.89 1.9458 2 0 2 2 48.72 1.57 1.8690 -4 3 1 4 50.01 3.07 1.8237 3 3 1 4 50.61 3.65 1.8036 5 1 0 4 51.15 1.90 1.7858 1 3 2 4 51.20 9.83 1.7842 2 2 2 4 51.31 1.94 1.7806 2 4 1 4 52.10 11.30 1.7555 1 5 0 4 52.96 2.89 1.7288 4 2 1 4 53.95 2.10 1.6997 -1 1 3 4 54.55 3.82 1.6822 -2 4 2 4 54.89 4.05 1.6728 -3 1 3 4 55.24 1.30 1.6629 0 4 2 4 55.38 4.57 1.6590 3 1 2 4 56.54 18.35 1.6276 -2 2 3 4 56.63 25.65 1.6253 -5 3 1 4 59.76 3.55 1.5474 -3 5 1 4 59.86 5.11 1.5452 3 5 0 4 59.94 6.71 1.5432 -6 0 2 2 60.32 5.99 1.5345 6 0 0 2 61.51 4.45 1.5075 -2 3 3 4 61.99 14.43 1.4970 -1 3 3 4 62.30 12.72 1.4903 0 6 0 2 62.85 2.38 1.4785 -3 3 3 4 62.92 1.16 1.4772 -1 5 2 4 63.13 5.36 1.4727 4 0 2 2 63.37 2.23 1.4677 2 4 2 4 63.81 3.30 1.4587 -6 2 2 4 64.13 1.59 1.4522 0 5 2 4 65.86 5.31 1.4181 -3 5 2 4 66.12 2.21 1.4131 3 5 1 4 67.08 1.83 1.3952 1 5 2 4 67.34 27.53 1.3906 5 3 1 4 68.11 3.16 1.3768 -2 4 3 4 68.23 4.94 1.3745 1 3 3 4 68.57 1.35 1.3686 -7 1 1 4 69.29 1.84 1.3561 2 2 3 4 69.42 1.78 1.3539 -7 0 2 2 70.33 6.55 1.3386 -7 1 2 4 70.69 4.73 1.3327 -5 3 3 4 70.72 1.41 1.3321 0 4 3 4 72.33 2.06 1.3064 -3 0 4 2 72.66 1.75 1.3013 7 1 0 4 73.20 1.17 1.2929 6 2 1 4 73.22 1.71 1.2926 -3 1 4 4 73.58 1.00 1.2872 -2 6 2 4 73.81 1.23 1.2838 3 1 3 4 73.86 1.75 1.2830 5 1 2 4 74.17 10.42 1.2785 0 6 2 4 74.26 4.32 1.2771 -4 0 4 2 75.62 1.32 1.2575 -2 2 4 4 76.09 1.19 1.2510 4 6 0 4 76.58 2.25 1.2441 0 0 4 2 77.38 1.53 1.2332 -3 5 3 4 77.80 7.04 1.2277 3 5 2 4 79.62 2.00 1.2041 -4 6 2 4 81.32 1.60 1.1831 2 6 2 4 82.25 1.17 1.1721 7 1 1 4 82.96 1.85 1.1639 -6 0 4 2 84.11 1.58 1.1509 8 0 0 2 89.63 1.46 1.0938 -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.