Tephroite Diffraction data computed using the structute from the paper listed below, along with the cell parameters refined from single crystal data of R070511 Francis C A, Ribbe P H American Mineralogist 65 (1980) 1263-1269 The forsterite-tephroite series: I. Crystal structure refinements Te 91 olivine CELL PARAMETERS: 4.8450 10.5900 6.2080 90.000 90.000 90.000 SPACE GROUP: Pbnm ATOM X Y Z OCCUPANCY ISO(B) Mn 0.00000 0.00000 0.00000 0.830 0.757 Mg 0.00000 0.00000 0.00000 0.170 0.757 Mn 0.98770 0.28010 0.25000 1.000 0.646 Si 0.42650 0.09510 0.25000 1.000 0.610 O 0.75740 0.09140 0.25000 1.000 0.809 O 0.21620 0.45250 0.25000 1.000 0.676 O 0.28750 0.16250 0.04010 1.000 0.771 X-RAY WAVELENGTH: 1.541838 BOUNDS ON TWO THETA: 0.0 90.0 LIMITS IMPOSED ON THE INDICES ARE: +/- 4 +/- 9 +/- 5 MAX. ABS. INTENSITY / VOLUME**2: 17.54513379 The INTENSITY cut off value is 1.00 2-THETA INTENSITY D-SPACING H K L 16.74 6.73 5.2950 0 2 0 20.15 4.17 4.4058 1 1 0 22.06 11.94 4.0286 0 2 1 23.29 6.90 3.8195 1 0 1 24.78 64.58 3.5929 1 1 1 24.91 6.84 3.5745 1 2 0 28.76 10.09 3.1040 0 0 2 28.82 3.81 3.0977 1 2 1 31.35 90.22 2.8531 1 3 0 33.46 29.96 2.6778 0 2 2 33.86 9.04 2.6475 0 4 0 34.60 75.94 2.5924 1 3 1 35.37 100.00 2.5375 1 1 2 36.91 15.46 2.4353 0 4 1 37.11 12.90 2.4225 2 0 0 38.11 6.43 2.3615 2 1 0 38.41 14.27 2.3437 1 2 2 38.76 12.37 2.3233 1 4 0 40.89 6.86 2.2072 2 1 1 43.06 4.55 2.1005 1 3 2 43.60 2.20 2.0761 2 2 1 45.00 1.34 2.0143 0 4 2 46.81 2.28 1.9407 1 5 0 48.61 11.54 1.8730 1 1 3 49.19 6.01 1.8523 1 5 1 50.82 71.89 1.7965 2 2 2 50.99 2.62 1.7909 1 2 3 51.11 22.39 1.7872 2 4 0 53.34 12.91 1.7175 2 4 1 54.01 13.17 1.6977 0 6 1 54.80 17.43 1.6751 1 3 3 55.87 15.91 1.6455 1 5 2 56.44 8.38 1.6304 0 4 3 57.75 4.03 1.5965 3 1 0 59.38 1.09 1.5563 2 1 3 59.57 21.56 1.5520 0 0 4 59.70 2.66 1.5488 2 4 2 59.81 6.86 1.5462 3 1 1 59.88 1.35 1.5447 3 2 0 59.89 2.38 1.5444 2 5 1 60.33 25.62 1.5343 0 6 2 61.90 1.08 1.4990 3 2 1 63.33 5.09 1.4686 3 3 0 64.53 13.34 1.4441 1 7 0 65.29 6.77 1.4292 3 3 1 65.78 8.44 1.4197 3 1 2 66.00 1.41 1.4156 1 5 3 67.35 2.93 1.3903 2 6 1 67.76 7.40 1.3830 3 2 2 67.99 1.89 1.3787 3 4 0 68.87 12.25 1.3633 1 3 4 69.49 2.36 1.3526 2 4 3 69.89 2.53 1.3459 3 4 1 70.07 4.54 1.3429 0 6 3 70.31 2.37 1.3389 0 4 4 72.30 5.08 1.3068 2 0 4 72.99 4.03 1.2962 2 6 2 75.16 1.64 1.2641 3 1 3 75.23 1.45 1.2630 2 5 3 78.56 1.19 1.2176 0 8 2 79.06 4.17 1.2112 4 0 0 80.14 3.40 1.1976 3 3 3 80.35 1.17 1.1951 1 1 5 81.03 7.64 1.1867 3 5 2 81.10 1.22 1.1859 2 7 2 81.51 1.07 1.1809 1 8 2 82.05 1.84 1.1745 2 6 3 82.28 6.58 1.1718 2 4 4 82.42 1.16 1.1701 3 6 1 83.16 2.12 1.1616 2 8 0 84.43 2.12 1.1474 3 4 3 84.93 2.03 1.1418 2 8 1 85.24 4.12 1.1385 1 3 5 86.80 1.87 1.1220 4 1 2 87.70 1.44 1.1128 3 1 4 88.57 4.50 1.1041 3 7 0 88.62 5.11 1.1036 4 2 2 88.84 2.33 1.1014 4 4 0 89.52 1.19 1.0949 3 2 4 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.