Fayalite Diffraction data computed using the structure from the paper listed below, along with the cell parameters refined from single crystal data of R100102 Birle J D, Gibbs G V, Moore P B, Smith J V American Mineralogist 53 (1968) 807-824 Crystal structures of natural olivines Note: variety hortonolite _database_code_amcsd 0000174 CELL PARAMETERS: 4.8000 10.3520 6.0510 90.000 90.000 90.000 SPACE GROUP: Pbnm ATOM X Y Z OCCUPANCY ISO(B) Mg 0.00000 0.00000 0.00000 0.490 0.360 Fe 0.00000 0.00000 0.00000 0.490 0.360 Mn 0.00000 0.00000 0.00000 0.010 0.360 Ca 0.00000 0.00000 0.00000 0.010 0.360 Mg 0.98678 0.27915 0.25000 0.490 0.470 Fe 0.98678 0.27915 0.25000 0.490 0.470 Mn 0.98678 0.27915 0.25000 0.010 0.470 Ca 0.98678 0.27915 0.25000 0.010 0.470 Si 0.42870 0.09576 0.25000 1.000 0.180 O 0.76844 0.09173 0.25000 1.000 0.280 O 0.21419 0.44958 0.25000 1.000 0.180 O 0.28401 0.16395 0.03442 1.000 0.370 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: 14.02734294 The INTENSITY cut off value is 1.00 2-THETA INTENSITY D-SPACING H K L 17.13 12.48 5.1760 0 2 0 20.39 2.07 4.3547 1 1 0 22.61 22.54 3.9333 0 2 1 23.66 8.70 3.7605 1 0 1 25.20 41.54 3.5345 1 1 1 25.31 8.11 3.5195 1 2 0 29.36 4.45 3.0423 1 2 1 29.52 9.31 3.0255 0 0 2 31.94 81.82 2.8018 1 3 0 34.33 16.14 2.6120 0 2 2 34.66 4.43 2.5880 0 4 0 35.30 68.94 2.5425 1 3 1 36.15 100.00 2.4847 1 1 2 37.47 7.88 2.4000 2 0 0 37.81 12.97 2.3795 0 4 1 38.51 8.06 2.3380 2 1 0 39.27 21.30 2.2943 1 2 2 39.56 17.36 2.2780 1 4 0 41.40 10.89 2.1809 2 1 1 44.05 5.85 2.0557 1 3 2 46.07 1.03 1.9703 2 3 0 46.16 2.48 1.9667 0 4 2 47.85 4.02 1.9011 1 5 0 49.82 7.65 1.8302 1 1 3 50.31 5.39 1.8137 1 5 1 51.73 70.58 1.7673 2 2 2 51.96 21.26 1.7598 2 4 0 52.27 3.01 1.7500 1 2 3 54.29 12.42 1.6898 2 4 1 55.37 12.85 1.6592 0 6 1 55.67 1.01 1.6511 2 3 2 56.19 16.44 1.6369 1 3 3 57.23 11.22 1.6097 1 5 2 57.97 7.86 1.5909 0 4 3 58.36 4.03 1.5812 3 1 0 60.52 4.50 1.5299 3 1 1 60.57 1.72 1.5286 3 2 0 60.63 2.03 1.5272 2 1 3 60.90 4.15 1.5212 2 4 2 61.06 3.57 1.5176 2 5 1 61.28 23.96 1.5128 0 0 4 61.91 30.80 1.4988 0 6 2 62.69 1.23 1.4821 3 2 1 64.16 4.81 1.4516 3 3 0 66.11 12.45 1.4133 1 7 0 66.21 7.90 1.4115 3 3 1 66.75 9.57 1.4014 3 1 2 67.73 1.29 1.3834 1 5 3 68.78 2.16 1.3648 2 6 1 68.81 10.91 1.3644 3 2 2 69.01 3.08 1.3609 3 4 0 70.78 11.85 1.3311 1 3 4 70.99 3.39 1.3278 3 4 1 71.09 2.09 1.3260 2 4 3 72.03 4.69 1.3111 0 6 3 72.35 1.40 1.3060 0 4 4 74.08 3.92 1.2797 2 0 4 74.66 3.30 1.2712 2 6 2 74.74 1.31 1.2701 2 1 4 75.43 1.47 1.2602 1 4 4 75.91 1.06 1.2535 3 0 3 77.05 2.14 1.2378 2 5 3 79.95 4.66 1.2000 4 0 0 80.78 1.08 1.1897 0 8 2 81.27 1.79 1.1837 1 5 4 81.72 1.04 1.1784 0 2 5 81.74 3.94 1.1782 3 3 3 82.61 6.56 1.1679 3 5 2 83.09 1.96 1.1624 2 7 2 83.76 1.38 1.1548 1 8 2 84.03 1.65 1.1517 3 6 1 84.14 1.36 1.1506 2 6 3 84.45 6.50 1.1472 2 4 4 85.19 2.91 1.1390 2 8 0 86.21 2.87 1.1281 3 4 3 87.06 1.44 1.1193 2 8 1 87.88 4.22 1.1110 1 3 5 88.07 2.41 1.1090 4 1 2 89.70 1.59 1.0931 3 1 4 89.98 4.49 1.0904 4 2 2 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.