Forsterite Diffraction data computed using the structure from the paper listed below, along with the cell parameters refined from the powder pattern of R040018 Birle J D, Gibbs G V, Moore P B, Smith J V American Mineralogist 53 (1968) 807-824 Crystal structures of natural olivines CELL PARAMETERS: 4.7617 10.2255 5.9927 90.000 90.000 90.000 SPACE GROUP: Pbnm ATOM X Y Z OCCUPANCY ISO(B) Mg 0.00000 0.00000 0.00000 0.900 0.330 Fe 0.00000 0.00000 0.00000 0.100 0.330 Mg 0.98975 0.27743 0.25000 0.900 0.360 Fe 0.98975 0.27743 0.25000 0.100 0.360 Si 0.42693 0.09434 0.25000 1.000 0.200 O 0.76580 0.09186 0.25000 1.000 0.350 O 0.22012 0.44779 0.25000 1.000 0.420 O 0.27810 0.16346 0.03431 1.000 0.410 X-RAY WAVELENGTH: 1.541838 BOUNDS ON TWO THETA: 5.0 90.0 LIMITS IMPOSED ON THE INDICES ARE: +/- 4 +/- 9 +/- 5 MAX. ABS. INTENSITY / VOLUME**2: 8.638043787 The INTENSITY cut off value is 1.00 2-THETA INTENSITY D-SPACING H K L 17.34 19.25 5.1128 0 2 0 22.86 53.85 3.8895 0 2 1 23.87 18.46 3.7281 1 0 1 25.43 19.99 3.5026 1 1 1 25.56 12.82 3.4845 1 2 0 29.66 5.73 3.0123 1 2 1 29.82 15.56 2.9964 0 0 2 32.30 66.77 2.7716 1 3 0 34.70 2.62 2.5851 0 2 2 35.69 77.71 2.5156 1 3 1 36.50 100.00 2.4615 1 1 2 37.79 1.42 2.3809 2 0 0 38.28 12.52 2.3514 0 4 1 38.84 9.44 2.3188 2 1 0 39.67 37.15 2.2719 1 2 2 40.03 26.66 2.2523 1 4 0 41.77 17.27 2.1626 2 1 1 44.53 4.98 2.0346 1 3 2 46.53 2.65 1.9518 2 3 0 46.71 2.62 1.9448 0 4 2 48.44 6.08 1.8791 1 5 0 48.86 1.38 1.8640 2 0 2 50.33 4.40 1.8129 1 1 3 50.93 4.18 1.7930 1 5 1 52.23 68.17 1.7513 2 2 2 52.52 20.26 1.7423 2 4 0 52.83 4.30 1.7330 1 2 3 54.88 13.64 1.6730 2 4 1 56.11 13.40 1.6393 0 6 1 56.25 2.64 1.6355 2 3 2 56.81 18.93 1.6205 1 3 3 57.93 4.93 1.5920 1 5 2 58.65 9.39 1.5740 0 4 3 58.88 3.49 1.5685 3 1 0 60.32 1.37 1.5343 3 0 1 61.07 3.52 1.5173 3 1 1 61.14 2.40 1.5159 3 2 0 61.25 3.43 1.5134 2 1 3 61.57 4.76 1.5062 2 4 2 61.77 5.04 1.5018 2 5 1 61.94 27.83 1.4982 0 0 4 62.72 39.06 1.4814 0 6 2 63.28 1.28 1.4696 3 2 1 63.45 1.46 1.4660 2 2 3 64.79 3.47 1.4389 3 3 0 64.85 1.18 1.4377 0 2 4 66.87 7.76 1.3991 3 3 1 67.01 11.41 1.3965 1 7 0 67.39 8.26 1.3896 3 1 2 69.49 18.15 1.3526 3 2 2 69.64 1.16 1.3502 2 6 1 69.74 6.38 1.3485 3 4 0 71.60 9.86 1.3180 1 3 4 71.75 4.44 1.3156 3 4 1 71.91 1.76 1.3130 2 4 3 72.97 4.73 1.2965 0 6 3 74.89 2.31 1.2680 2 0 4 75.56 1.56 1.2584 2 1 4 75.60 1.81 1.2578 2 6 2 76.09 1.15 1.2510 1 6 3 76.34 2.08 1.2474 1 4 4 76.68 2.36 1.2427 3 0 3 77.65 1.25 1.2297 3 4 2 77.98 2.96 1.2252 2 5 3 80.72 5.05 1.1904 4 0 0 80.88 1.05 1.1884 2 3 4 82.31 2.64 1.1714 1 5 4 82.65 3.90 1.1675 3 3 3 82.70 2.16 1.1669 0 2 5 83.10 1.29 1.1623 1 0 5 83.59 5.05 1.1567 3 5 2 84.21 2.62 1.1498 2 7 2 84.97 2.00 1.1414 1 8 2 85.08 3.09 1.1403 3 6 1 85.48 5.75 1.1360 2 4 4 86.40 3.13 1.1262 2 8 0 87.22 4.09 1.1176 3 4 3 88.98 5.04 1.1001 1 3 5 89.00 2.67 1.0999 4 1 2 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.