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 = 30 min _database_code_amcsd 0003965 CELL PARAMETERS: 9.7118 8.9442 5.2484 90.000 108.496 90.000 SPACE GROUP: P2_1/c X-RAY WAVELENGTH: 1.541838 Cell Volume: 432.349 Density (g/cm3): 3.547 MAX. ABS. INTENSITY / VOLUME**2: 11.48006467 RIR: 1.054 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 13.80 2.39 6.4165 1 1 0 4 19.27 10.73 4.6051 2 0 0 2 20.02 11.44 4.4362 -1 1 1 4 20.42 3.58 4.3492 0 1 1 4 24.95 1.13 3.5693 1 1 1 4 26.49 1.59 3.3650 -1 2 1 4 26.80 16.18 3.3266 0 2 1 4 27.81 51.99 3.2082 2 2 0 4 29.61 100.00 3.0173 -2 2 1 4 30.64 41.50 2.9180 -3 1 1 4 30.79 46.06 2.9038 3 1 0 4 34.84 46.27 2.5750 -1 3 1 4 35.09 1.87 2.5577 0 3 1 4 36.09 49.92 2.4886 0 0 2 2 36.52 27.25 2.4603 2 2 1 4 37.33 4.42 2.4088 -2 3 1 4 38.02 3.14 2.3669 1 3 1 4 40.39 14.27 2.2334 3 1 1 4 40.43 3.51 2.2309 1 0 2 2 40.68 2.45 2.2181 -2 2 2 4 41.53 5.17 2.1746 0 2 2 4 41.73 8.24 2.1646 1 1 2 4 42.14 37.62 2.1445 -3 3 1 4 42.25 3.07 2.1388 3 3 0 4 42.76 7.76 2.1147 -4 2 1 4 43.84 1.86 2.0650 -3 2 2 4 44.24 3.65 2.0471 4 2 0 4 44.32 15.28 2.0440 -4 0 2 2 44.41 10.73 2.0397 0 4 1 4 45.07 5.03 2.0115 2 4 0 4 45.52 1.21 1.9926 -4 1 2 4 46.28 3.93 1.9618 -2 4 1 4 46.67 10.91 1.9463 2 0 2 2 48.71 1.58 1.8695 -4 3 1 4 50.00 3.09 1.8243 3 3 1 4 50.59 3.62 1.8042 5 1 0 4 51.14 1.88 1.7862 1 3 2 4 51.19 9.71 1.7846 2 2 2 4 51.29 1.93 1.7812 2 4 1 4 52.08 11.30 1.7560 1 5 0 4 52.94 2.91 1.7294 4 2 1 4 53.94 2.05 1.6999 -1 1 3 4 54.54 3.75 1.6825 -2 4 2 4 54.88 4.02 1.6729 -3 1 3 4 55.23 1.32 1.6633 0 4 2 4 55.36 4.60 1.6595 3 1 2 4 56.54 18.32 1.6278 -2 2 3 4 56.62 25.68 1.6257 -5 3 1 4 59.75 3.51 1.5477 -3 5 1 4 59.84 5.13 1.5456 3 5 0 4 59.93 6.72 1.5435 -6 0 2 2 60.29 6.01 1.5350 6 0 0 2 61.50 4.48 1.5077 -2 3 3 4 61.98 14.47 1.4973 -1 3 3 4 62.28 12.70 1.4907 0 6 0 2 62.84 2.37 1.4787 -3 3 3 4 62.90 1.16 1.4775 -1 5 2 4 63.11 5.36 1.4731 4 0 2 2 63.35 2.20 1.4681 2 4 2 4 63.79 3.26 1.4590 -6 2 2 4 64.11 1.61 1.4525 0 5 2 4 65.84 5.32 1.4184 -3 5 2 4 66.10 2.17 1.4135 3 5 1 4 67.06 1.84 1.3956 1 5 2 4 67.31 27.48 1.3911 5 3 1 4 68.09 3.16 1.3770 -2 4 3 4 68.22 4.95 1.3748 1 3 3 4 68.55 1.33 1.3689 -7 1 1 4 69.27 1.85 1.3565 2 2 3 4 69.40 1.79 1.3541 -7 0 2 2 70.31 6.54 1.3389 -7 1 2 4 70.68 4.72 1.3329 -5 3 3 4 70.70 1.41 1.3324 0 4 3 4 72.32 2.08 1.3065 -3 0 4 2 72.63 1.75 1.3017 7 1 0 4 73.18 1.18 1.2934 6 2 1 4 73.22 1.70 1.2928 -3 1 4 4 73.79 1.22 1.2841 3 1 3 4 73.84 1.72 1.2834 5 1 2 4 74.15 10.39 1.2788 0 6 2 4 74.26 4.31 1.2772 -4 0 4 2 75.61 1.29 1.2576 -2 2 4 4 76.06 1.19 1.2513 4 6 0 4 76.57 2.23 1.2443 0 0 4 2 77.37 1.53 1.2334 -3 5 3 4 77.77 7.05 1.2280 3 5 2 4 79.60 1.99 1.2044 -4 6 2 4 81.30 1.61 1.1835 2 6 2 4 82.22 1.16 1.1725 7 1 1 4 82.68 1.01 1.1671 -8 2 1 4 82.95 1.85 1.1640 -6 0 4 2 84.08 1.58 1.1513 8 0 0 2 89.61 1.47 1.0940 -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.