Pigeonite Camara F, Carpenter M A, Domeneghetti M C, Tazzoli V Physics and Chemistry of Minerals 29 (2002) 331-340 Non-convergent ordering and displacive phase transition in pigeonite: in situ HT XRD study Sample: hga, T = 25 C Locality: from rhyodacite, Parana, Brazil _database_code_amcsd 0008637 CELL PARAMETERS: 9.7190 8.9470 5.2510 90.000 108.490 90.000 SPACE GROUP: P2_1/c X-RAY WAVELENGTH: 1.541838 Cell Volume: 433.035 Density (g/cm3): 3.546 MAX. ABS. INTENSITY / VOLUME**2: 11.46119191 RIR: 1.052 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 13.79 3.08 6.4199 1 1 0 4 19.26 11.04 4.6086 2 0 0 2 20.01 11.01 4.4382 -1 1 1 4 20.41 3.64 4.3513 0 1 1 4 24.93 1.04 3.5713 1 1 1 4 26.48 1.71 3.3663 -1 2 1 4 26.79 16.26 3.3279 0 2 1 4 27.79 52.00 3.2100 2 2 0 4 29.59 100.00 3.0187 -2 2 1 4 30.62 41.13 2.9199 -3 1 1 4 30.77 47.49 2.9059 3 1 0 4 34.19 1.08 2.6223 -1 0 2 2 34.83 48.06 2.5759 -1 3 1 4 35.07 1.82 2.5586 0 3 1 4 36.07 50.33 2.4900 0 0 2 2 36.50 27.56 2.4618 2 2 1 4 37.31 4.50 2.4098 -2 3 1 4 38.00 3.45 2.3679 1 3 1 4 40.36 14.15 2.2349 3 1 1 4 40.41 3.68 2.2322 1 0 2 2 40.66 2.41 2.2191 -2 2 2 4 41.51 5.20 2.1757 0 2 2 4 41.70 8.60 2.1658 1 1 2 4 42.12 38.76 2.1455 -3 3 1 4 42.23 3.03 2.1400 3 3 0 4 42.73 7.76 2.1160 -4 2 1 4 43.82 1.91 2.0660 -3 2 2 4 44.21 3.57 2.0485 4 2 0 4 44.29 15.47 2.0452 -4 0 2 2 44.40 10.56 2.0404 0 4 1 4 45.05 5.23 2.0123 2 4 0 4 45.49 1.26 1.9938 -4 1 2 4 46.26 4.12 1.9625 -2 4 1 4 46.64 11.00 1.9476 2 0 2 2 48.68 1.66 1.8705 -4 3 1 4 49.97 3.28 1.8253 3 3 1 4 50.55 3.48 1.8055 5 1 0 4 51.11 1.82 1.7871 1 3 2 4 51.15 9.78 1.7857 2 2 2 4 51.27 2.11 1.7820 2 4 1 4 52.06 11.76 1.7566 1 5 0 4 52.91 2.91 1.7306 4 2 1 4 53.91 1.99 1.7008 -1 1 3 4 54.52 3.85 1.6832 -2 4 2 4 54.85 3.95 1.6737 -3 1 3 4 55.20 1.29 1.6640 0 4 2 4 55.32 4.79 1.6606 3 1 2 4 56.51 18.41 1.6286 -2 2 3 4 56.58 26.37 1.6267 -5 3 1 4 59.72 3.76 1.5484 -3 5 1 4 59.81 5.32 1.5463 3 5 0 4 59.89 6.78 1.5445 -6 0 2 2 60.24 6.04 1.5362 6 0 0 2 61.47 4.76 1.5084 -2 3 3 4 61.95 14.96 1.4980 -1 3 3 4 62.26 13.26 1.4912 0 6 0 2 62.81 2.47 1.4794 -3 3 3 4 62.88 1.21 1.4781 -1 5 2 4 63.06 5.50 1.4742 4 0 2 2 63.32 2.30 1.4688 2 4 2 4 63.75 3.27 1.4599 -6 2 2 4 64.08 1.75 1.4531 0 5 2 4 65.81 5.57 1.4190 -3 5 2 4 66.07 2.33 1.4142 3 5 1 4 67.03 1.93 1.3962 1 5 2 4 67.26 28.29 1.3920 5 3 1 4 68.06 3.31 1.3776 -2 4 3 4 68.18 5.13 1.3755 1 3 3 4 68.49 1.26 1.3699 -7 1 1 4 69.22 1.93 1.3572 2 2 3 4 69.35 1.91 1.3551 -7 0 2 2 70.25 6.82 1.3398 -7 1 2 4 70.63 4.90 1.3335 -5 3 3 4 70.67 1.37 1.3330 0 4 3 4 72.28 2.18 1.3071 -3 0 4 2 72.57 1.84 1.3027 7 1 0 4 73.11 1.23 1.2943 6 2 1 4 73.17 1.81 1.2934 -3 1 4 4 73.74 1.16 1.2849 3 1 3 4 73.77 1.69 1.2843 5 1 2 4 74.11 11.05 1.2793 0 6 2 4 74.21 4.35 1.2779 -4 0 4 2 75.57 1.27 1.2582 -2 2 4 4 76.02 1.37 1.2519 4 6 0 4 76.52 2.28 1.2450 0 0 4 2 77.33 1.64 1.2339 -3 5 3 4 77.73 7.33 1.2286 3 5 2 4 79.56 2.18 1.2049 -4 6 2 4 81.23 1.01 1.1843 -5 2 4 4 81.25 1.75 1.1840 2 6 2 4 82.14 1.11 1.1734 7 1 1 4 82.61 1.04 1.1680 -8 2 1 4 82.90 1.87 1.1646 -6 0 4 2 84.00 1.61 1.1522 8 0 0 2 89.54 1.49 1.0946 -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.