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 = 650 C for t = 120 min _database_code_amcsd 0003980 CELL PARAMETERS: 9.7084 8.9414 5.2476 90.000 108.505 90.000 SPACE GROUP: P2_1/c X-RAY WAVELENGTH: 1.541838 Cell Volume: 431.974 Density (g/cm3): 3.550 MAX. ABS. INTENSITY / VOLUME**2: 11.43812776 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 2.21 6.4142 1 1 0 4 19.28 10.86 4.6032 2 0 0 2 20.02 11.96 4.4353 -1 1 1 4 20.42 3.54 4.3482 0 1 1 4 24.95 1.22 3.5682 1 1 1 4 26.49 1.57 3.3642 -1 2 1 4 26.81 16.29 3.3257 0 2 1 4 27.82 52.54 3.2071 2 2 0 4 29.61 100.00 3.0165 -2 2 1 4 30.65 41.97 2.9172 -3 1 1 4 30.80 45.71 2.9026 3 1 0 4 34.85 46.22 2.5743 -1 3 1 4 35.10 1.89 2.5569 0 3 1 4 36.10 50.35 2.4881 0 0 2 2 36.53 27.26 2.4595 2 2 1 4 37.34 4.35 2.4082 -2 3 1 4 38.03 3.15 2.3662 1 3 1 4 40.40 14.38 2.2325 3 1 1 4 40.44 3.48 2.2303 1 0 2 2 40.68 2.52 2.2177 -2 2 2 4 41.54 5.11 2.1741 0 2 2 4 41.74 8.15 2.1640 1 1 2 4 42.15 37.71 2.1439 -3 3 1 4 42.27 3.09 2.1381 3 3 0 4 42.77 7.68 2.1140 -4 2 1 4 43.85 1.85 2.0645 -3 2 2 4 44.26 3.69 2.0463 4 2 0 4 44.33 15.23 2.0436 -4 0 2 2 44.43 10.89 2.0391 0 4 1 4 45.09 5.16 2.0108 2 4 0 4 45.53 1.21 1.9922 -4 1 2 4 46.29 3.89 1.9612 -2 4 1 4 46.68 10.86 1.9457 2 0 2 2 48.72 1.57 1.8689 -4 3 1 4 50.02 3.07 1.8236 3 3 1 4 50.61 3.63 1.8034 5 1 0 4 51.15 1.89 1.7857 1 3 2 4 51.20 9.86 1.7841 2 2 2 4 51.31 1.89 1.7806 2 4 1 4 52.10 11.25 1.7555 1 5 0 4 52.97 2.90 1.7287 4 2 1 4 53.95 2.10 1.6996 -1 1 3 4 54.56 3.79 1.6821 -2 4 2 4 54.89 4.07 1.6726 -3 1 3 4 55.24 1.26 1.6628 0 4 2 4 55.38 4.63 1.6590 3 1 2 4 56.55 18.35 1.6275 -2 2 3 4 56.64 25.69 1.6251 -5 3 1 4 59.77 3.51 1.5473 -3 5 1 4 59.86 5.17 1.5451 3 5 0 4 59.95 6.71 1.5430 -6 0 2 2 60.32 5.94 1.5344 6 0 0 2 61.52 4.35 1.5074 -2 3 3 4 61.99 14.42 1.4970 -1 3 3 4 62.30 12.71 1.4902 0 6 0 2 62.86 2.37 1.4784 -3 3 3 4 62.92 1.19 1.4771 -1 5 2 4 63.14 5.31 1.4726 4 0 2 2 63.37 2.22 1.4676 2 4 2 4 63.81 3.26 1.4586 -6 2 2 4 64.13 1.56 1.4521 0 5 2 4 65.86 5.27 1.4181 -3 5 2 4 66.13 2.17 1.4130 3 5 1 4 67.09 1.84 1.3952 1 5 2 4 67.34 27.38 1.3905 5 3 1 4 68.11 3.16 1.3767 -2 4 3 4 68.24 4.96 1.3744 1 3 3 4 68.58 1.35 1.3684 -7 1 1 4 69.29 1.83 1.3561 2 2 3 4 69.43 1.76 1.3537 -7 0 2 2 70.33 6.48 1.3385 -7 1 2 4 70.69 4.72 1.3326 -5 3 3 4 70.72 1.43 1.3321 0 4 3 4 72.34 2.01 1.3063 -3 0 4 2 72.66 1.74 1.3012 7 1 0 4 73.21 1.16 1.2928 6 2 1 4 73.23 1.65 1.2926 -3 1 4 4 73.82 1.22 1.2837 3 1 3 4 73.87 1.74 1.2829 5 1 2 4 74.17 10.31 1.2785 0 6 2 4 74.27 4.33 1.2770 -4 0 4 2 75.63 1.30 1.2574 -2 2 4 4 76.09 1.17 1.2509 4 6 0 4 76.58 2.21 1.2441 0 0 4 2 77.39 1.53 1.2331 -3 5 3 4 77.80 6.97 1.2276 3 5 2 4 79.62 2.00 1.2041 -4 6 2 4 81.33 1.60 1.1831 2 6 2 4 82.26 1.17 1.1720 7 1 1 4 82.97 1.82 1.1638 -6 0 4 2 84.12 1.56 1.1508 8 0 0 2 89.64 1.45 1.0937 -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.