Fayalite Diffraction data computed using the structure from the paper listed below, along with the cell parameters refined from the powder pattern of R060535 Smyth J R American Mineralogist 60 (1975) 1092-1097 High temperature crystal chemistry of fayalite T = 20 deg C olivine CELL PARAMETERS: 4.7614 10.2236 5.9923 90.000 90.000 90.000 SPACE GROUP: Pbnm ATOM X Y Z OCCUPANCY ISO(B) Fe 0.00000 0.00000 0.00000 1.000 0.538 Fe 0.98530 0.28000 0.25000 1.000 0.480 Si 0.42920 0.09750 0.25000 1.000 0.387 O 0.76870 0.09280 0.25000 1.000 0.508 O 0.20760 0.45290 0.25000 1.000 0.408 O 0.28840 0.16370 0.03830 1.000 0.475 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: 23.58172374 The INTENSITY cut off value is 1.00 2-THETA INTENSITY D-SPACING H K L 17.35 8.37 5.1118 0 2 0 20.58 10.07 4.3163 1 1 0 22.87 8.89 3.8890 0 2 1 23.87 4.45 3.7279 1 0 1 25.43 63.04 3.5023 1 1 1 25.57 5.71 3.4841 1 2 0 29.66 3.56 3.0120 1 2 1 29.82 5.96 2.9962 0 0 2 32.30 91.77 2.7712 1 3 0 34.70 34.89 2.5849 0 2 2 35.11 10.84 2.5559 0 4 0 35.70 63.44 2.5153 1 3 1 36.51 100.00 2.4613 1 1 2 37.79 16.08 2.3807 2 0 0 38.28 12.79 2.3510 0 4 1 38.84 6.64 2.3187 2 1 0 39.68 11.38 2.2717 1 2 2 40.04 10.63 2.2520 1 4 0 41.77 6.79 2.1624 2 1 1 44.54 6.04 2.0344 1 3 2 44.63 1.83 2.0305 2 2 1 46.71 2.15 1.9445 0 4 2 48.45 2.62 1.8788 1 5 0 50.34 10.73 1.8127 1 1 3 50.94 6.34 1.7928 1 5 1 52.24 70.58 1.7511 2 2 2 52.53 22.09 1.7421 2 4 0 52.83 2.23 1.7329 1 2 3 54.88 11.22 1.6728 2 4 1 56.12 12.03 1.6390 0 6 1 56.82 14.68 1.6204 1 3 3 57.94 17.33 1.5917 1 5 2 58.66 6.80 1.5738 0 4 3 58.88 4.34 1.5683 3 1 0 61.08 5.73 1.5172 3 1 1 61.14 1.18 1.5158 3 2 0 61.25 1.10 1.5133 2 1 3 61.58 3.28 1.5060 2 4 2 61.78 2.41 1.5016 2 5 1 61.94 19.90 1.4981 0 0 4 62.73 23.29 1.4812 0 6 2 63.29 1.19 1.4695 3 2 1 64.80 5.95 1.4388 3 3 0 66.88 7.38 1.3990 3 3 1 67.02 12.62 1.3963 1 7 0 67.40 9.78 1.3895 3 1 2 68.57 1.60 1.3685 1 5 3 69.50 6.33 1.3525 3 2 2 69.65 3.04 1.3500 2 6 1 69.75 1.25 1.3483 3 4 0 71.60 12.69 1.3178 1 3 4 71.76 2.53 1.3154 3 4 1 71.92 2.15 1.3129 2 4 3 72.98 4.39 1.2963 0 6 3 73.24 2.59 1.2924 0 4 4 74.89 5.54 1.2679 2 0 4 75.61 4.74 1.2576 2 6 2 77.36 1.37 1.2335 3 1 3 77.99 1.46 1.2251 2 5 3 80.73 4.23 1.1904 4 0 0 81.97 1.06 1.1755 0 8 2 82.32 1.09 1.1713 1 5 4 82.65 3.68 1.1674 3 3 3 83.60 7.62 1.1566 3 5 2 83.76 1.15 1.1548 1 1 5 84.22 1.32 1.1496 2 7 2 85.24 1.84 1.1385 2 6 3 85.49 6.92 1.1358 2 4 4 86.42 2.43 1.1260 2 8 0 87.23 2.05 1.1175 3 4 3 88.32 1.89 1.1066 2 8 1 88.99 3.66 1.1000 1 3 5 89.01 1.99 1.0998 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.