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 = 90 min _database_code_amcsd 0003967 CELL PARAMETERS: 9.7087 8.9405 5.2468 90.000 108.496 90.000 SPACE GROUP: P2_1/c X-RAY WAVELENGTH: 1.541838 Cell Volume: 431.901 Density (g/cm3): 3.549 MAX. ABS. INTENSITY / VOLUME**2: 11.55739736 RIR: 1.060 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 13.81 2.75 6.4141 1 1 0 4 19.28 10.55 4.6036 2 0 0 2 20.02 10.62 4.4347 -1 1 1 4 20.43 3.54 4.3478 0 1 1 4 26.50 1.60 3.3638 -1 2 1 4 26.81 15.80 3.3254 0 2 1 4 27.82 50.51 3.2071 2 2 0 4 29.62 100.00 3.0162 -2 2 1 4 30.65 40.16 2.9171 -3 1 1 4 30.80 46.33 2.9028 3 1 0 4 34.86 45.82 2.5740 -1 3 1 4 35.10 1.88 2.5567 0 3 1 4 36.10 49.69 2.4879 0 0 2 2 36.53 27.32 2.4595 2 2 1 4 37.35 4.45 2.4079 -2 3 1 4 38.03 3.13 2.3660 1 3 1 4 40.40 13.80 2.2326 3 1 1 4 40.45 3.55 2.2302 1 0 2 2 40.69 2.29 2.2173 -2 2 2 4 41.54 4.87 2.1739 0 2 2 4 41.74 8.35 2.1639 1 1 2 4 42.15 37.42 2.1437 -3 3 1 4 42.27 2.98 2.1380 3 3 0 4 42.78 7.76 2.1139 -4 2 1 4 43.86 1.84 2.0643 -3 2 2 4 44.26 3.48 2.0464 4 2 0 4 44.33 15.19 2.0433 -4 0 2 2 44.43 10.47 2.0389 0 4 1 4 45.09 4.81 2.0107 2 4 0 4 45.54 1.23 1.9920 -4 1 2 4 46.30 4.04 1.9610 -2 4 1 4 46.68 10.77 1.9457 2 0 2 2 48.73 1.58 1.8688 -4 3 1 4 50.02 3.09 1.8236 3 3 1 4 50.61 3.51 1.8036 5 1 0 4 51.16 1.82 1.7856 1 3 2 4 51.20 9.54 1.7840 2 2 2 4 51.31 1.99 1.7805 2 4 1 4 52.10 11.24 1.7553 1 5 0 4 52.96 2.94 1.7288 4 2 1 4 53.96 1.97 1.6994 -1 1 3 4 54.56 3.62 1.6819 -2 4 2 4 54.90 3.85 1.6724 -3 1 3 4 55.25 1.37 1.6627 0 4 2 4 55.38 4.67 1.6590 3 1 2 4 56.56 18.32 1.6273 -2 2 3 4 56.64 25.49 1.6251 -5 3 1 4 59.77 3.45 1.5471 -3 5 1 4 59.86 5.14 1.5450 3 5 0 4 59.95 6.65 1.5430 -6 0 2 2 60.32 5.98 1.5345 6 0 0 2 61.53 4.48 1.5072 -2 3 3 4 62.00 14.29 1.4968 -1 3 3 4 62.31 12.65 1.4901 0 6 0 2 62.87 2.35 1.4782 -3 3 3 4 62.93 1.19 1.4770 -1 5 2 4 63.13 5.30 1.4727 4 0 2 2 63.38 2.10 1.4676 2 4 2 4 63.82 3.19 1.4585 -6 2 2 4 64.14 1.61 1.4520 0 5 2 4 65.87 5.27 1.4179 -3 5 2 4 66.13 2.13 1.4130 3 5 1 4 67.09 1.84 1.3951 1 5 2 4 67.34 27.31 1.3906 5 3 1 4 68.12 3.21 1.3765 -2 4 3 4 68.24 4.94 1.3743 1 3 3 4 68.57 1.29 1.3685 -7 1 1 4 69.29 1.85 1.3560 2 2 3 4 69.43 1.79 1.3537 -7 0 2 2 70.34 6.56 1.3385 -7 1 2 4 70.70 4.69 1.3324 -5 3 3 4 70.73 1.39 1.3319 0 4 3 4 72.35 2.08 1.3061 -3 0 4 2 72.66 1.77 1.3013 7 1 0 4 73.20 1.19 1.2929 6 2 1 4 73.24 1.68 1.2924 -3 1 4 4 73.82 1.18 1.2837 3 1 3 4 73.86 1.71 1.2830 5 1 2 4 74.18 10.31 1.2783 0 6 2 4 74.28 4.29 1.2768 -4 0 4 2 75.64 1.26 1.2572 -2 2 4 4 76.09 1.18 1.2509 4 6 0 4 76.59 2.21 1.2439 0 0 4 2 77.40 1.50 1.2330 -3 5 3 4 77.81 7.00 1.2276 3 5 2 4 79.63 2.01 1.2040 -4 6 2 4 81.33 1.60 1.1830 2 6 2 4 82.25 1.12 1.1721 7 1 1 4 82.71 1.01 1.1667 -8 2 1 4 82.98 1.82 1.1636 -6 0 4 2 84.11 1.57 1.1509 8 0 0 2 89.65 1.46 1.0936 -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.