Aegirine Diffraction data computed using the structute from the paper listed below, along with the cell parameters refined from single crystal data of R070253 Cameron M, Sueno S, Prewitt C T, Papike J J American Mineralogist 58 (1973) 594-618 High-temperature crystal chemistry of acmite, diopside, hedenbergite, jadeite, spodumene, and ureyite T = 24 C pyroxene AMCSD#0000335 CELL PARAMETERS: 9.6600 8.8020 5.2860 90.000 107.420 90.000 SPACE GROUP: C2/c ATOM X Y Z OCCUPANCY ISO(B) Si 0.29050 0.08940 0.23510 1.000 0.293 Fe 0.00000 0.89890 0.25000 1.000 0.369 Na 0.00000 0.29990 0.25000 1.000 0.974 O 0.11410 0.07840 0.13800 1.000 0.395 O 0.35820 0.25580 0.30010 1.000 0.525 O 0.35180 0.00790 0.01180 1.000 0.520 X-RAY WAVELENGTH: 1.541838 BOUNDS ON TWO THETA: 5.0 90.0 LIMITS IMPOSED ON THE INDICES ARE: +/- 8 +/- 8 +/- 4 MAX. ABS. INTENSITY / VOLUME**2: 18.45340705 The INTENSITY cut off value is 1.00 2-THETA INTENSITY D-SPACING H K L 13.91 39.23 6.3656 1 1 0 19.26 3.15 4.6085 2 0 0 20.07 21.89 4.4233 -1 1 1 20.18 17.05 4.4010 0 2 0 24.68 8.86 3.6068 1 1 1 28.03 4.46 3.1828 2 2 0 29.94 100.00 2.9845 -2 2 1 30.83 46.41 2.9007 3 1 0 30.91 4.88 2.8925 -3 1 1 32.01 1.79 2.7958 1 3 0 35.26 24.01 2.5452 -1 3 1 35.47 1.55 2.5305 -1 1 2 35.60 38.11 2.5218 0 0 2 36.36 37.69 2.4709 2 2 1 40.00 2.81 2.2542 3 1 1 40.21 1.25 2.2427 -3 1 2 41.14 17.36 2.1943 1 1 2 41.26 2.50 2.1880 0 2 2 42.61 1.54 2.1219 3 3 0 42.68 18.17 2.1187 -3 3 1 43.17 11.32 2.0954 -4 2 1 44.63 9.52 2.0305 -4 0 2 44.94 7.02 2.0169 0 4 1 45.69 1.31 1.9857 2 4 0 45.90 5.23 1.9770 2 0 2 46.96 6.03 1.9347 -2 4 1 48.34 3.68 1.8828 -5 1 1 49.43 1.97 1.8437 -4 2 2 49.96 3.36 1.8256 3 3 1 50.14 1.57 1.8195 -3 3 2 50.59 1.09 1.8042 5 1 0 51.60 1.75 1.7714 2 4 1 52.64 2.74 1.7387 4 2 1 52.95 11.13 1.7291 1 5 0 53.41 1.21 1.7154 -1 1 3 54.55 3.76 1.6822 3 1 2 54.83 1.12 1.6743 -3 1 3 55.42 6.90 1.6580 0 4 2 56.36 15.41 1.6325 -2 2 3 57.18 15.29 1.6109 -5 3 1 57.95 8.08 1.5914 4 4 0 59.23 1.35 1.5600 5 1 1 59.72 1.13 1.5483 1 1 3 60.24 4.03 1.5362 6 0 0 60.46 4.85 1.5313 -6 0 2 60.63 5.52 1.5274 3 5 0 61.31 2.76 1.5120 -6 2 1 61.45 1.49 1.5089 -4 2 3 61.75 11.07 1.5023 -1 3 3 62.18 4.92 1.4930 4 0 2 62.21 1.27 1.4923 -4 4 2 63.05 1.73 1.4744 -3 3 3 63.40 4.77 1.4670 0 6 0 63.64 1.71 1.4621 -5 1 3 66.09 2.47 1.4138 4 2 2 66.70 9.75 1.4022 -3 5 2 67.12 14.09 1.3946 5 3 1 67.36 2.45 1.3901 1 5 2 68.27 5.10 1.3739 2 2 3 68.29 2.74 1.3734 -2 4 3 70.94 7.63 1.3285 -7 1 2 71.26 3.69 1.3233 -5 3 3 72.60 2.14 1.3022 7 1 0 72.76 3.40 1.2997 6 2 1 72.85 5.31 1.2983 -3 1 4 74.13 1.75 1.2791 -4 0 4 74.57 1.22 1.2726 -2 6 2 74.88 7.41 1.2680 0 6 2 75.38 3.56 1.2609 0 0 4 77.22 1.59 1.2355 4 4 2 77.77 6.83 1.2280 3 5 2 78.30 2.13 1.2211 -1 7 1 80.08 2.50 1.1983 1 7 1 83.17 1.46 1.1615 -8 2 1 83.33 3.24 1.1596 -6 0 4 84.00 1.15 1.1521 8 0 0 88.40 1.02 1.1058 -4 4 4 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.