Cordierite Diffraction data computed using the structure from the paper listed below, along with the cell parameters refined from the powder pattern of R040082 Hochella M F, Brown G E, Ross F K, Gibbs G V American Mineralogist 64 (1979) 337-351 High-temperature crystal chemistry of hydrous Mg- and Fe-cordierite White Well, T = 375 C CELL PARAMETERS: 17.0954 9.7354 9.3326 90.000 90.000 90.000 SPACE GROUP: Cccm ATOM X Y Z OCCUPANCY ISO(B) Mg 0.16220 0.50000 0.25000 0.955 1.126 Fe 0.16220 0.50000 0.25000 0.045 1.126 Al 0.25000 0.25000 0.25000 1.000 0.961 Si 0.00000 0.50000 0.25000 1.000 0.808 Si 0.19200 0.07830 0.00000 1.000 0.707 Al 0.05060 0.30760 0.00000 1.000 0.831 Si -0.13510 0.23690 0.00000 1.000 0.731 O 0.24700 0.10360 0.14070 1.000 1.242 O 0.06200 0.41660 0.15120 1.000 1.210 O -0.17360 0.30900 0.14180 1.000 1.196 O 0.12200 0.18460 0.00000 1.000 1.825 O -0.04340 0.24780 0.00000 1.000 1.845 O -0.16410 0.07930 0.00000 1.000 1.779 X-RAY WAVELENGTH: 1.541838 BOUNDS ON TWO THETA: 5.0 90.0 LIMITS IMPOSED ON THE INDICES ARE: +/- 15 +/- 8 +/- 8 MAX. ABS. INTENSITY / VOLUME**2: 11.10184064 The INTENSITY cut off value is 1.00 2-THETA INTENSITY D-SPACING H K L 10.35 59.85 8.5477 2 0 0 10.46 100.00 8.4598 1 1 0 18.04 19.18 4.9179 3 1 0 18.23 8.60 4.8677 0 2 0 19.02 10.55 4.6663 0 0 2 21.70 7.48 4.0957 2 0 2 21.75 44.09 4.0859 1 1 2 26.33 33.47 3.3850 3 1 2 26.46 21.30 3.3685 0 2 2 28.32 15.84 3.1517 4 0 2 28.48 45.18 3.1339 2 2 2 29.29 29.34 3.0489 5 1 1 29.41 24.20 3.0368 4 2 1 29.61 28.99 3.0170 1 3 1 33.78 9.98 2.6535 5 1 2 33.88 9.84 2.6456 4 2 2 34.06 4.97 2.6324 1 3 2 36.54 2.99 2.4590 6 2 0 36.93 2.56 2.4339 0 4 0 36.97 1.02 2.4318 6 0 2 37.26 1.19 2.4135 3 3 2 38.59 10.03 2.3331 0 0 4 40.27 1.07 2.2393 5 1 3 41.51 4.31 2.1754 6 2 2 41.86 1.16 2.1580 0 4 2 42.81 2.05 2.1122 7 1 2 42.90 2.63 2.1080 3 1 4 42.99 1.27 2.1040 0 2 4 43.04 2.97 2.1015 5 3 2 43.24 4.60 2.0923 2 4 2 44.34 1.23 2.0430 2 2 4 46.41 1.26 1.9567 8 2 0 46.54 2.52 1.9513 7 3 0 46.76 2.03 1.9429 8 0 2 46.97 1.27 1.9346 1 5 0 47.18 2.05 1.9263 4 4 2 47.48 1.04 1.9150 8 2 1 48.29 3.12 1.8846 7 1 3 48.34 1.29 1.8828 1 3 4 48.50 4.70 1.8770 5 3 3 48.68 4.52 1.8704 2 4 3 48.85 1.62 1.8643 9 1 0 49.24 1.55 1.8506 6 4 0 49.47 1.72 1.8425 3 5 0 50.26 2.09 1.8152 6 4 1 50.49 1.52 1.8076 3 5 1 50.56 2.29 1.8051 6 0 4 50.79 4.46 1.7976 3 3 4 53.61 3.71 1.7095 10 0 0 54.19 13.22 1.6925 6 2 4 54.21 4.40 1.6920 5 5 0 54.48 7.72 1.6843 0 4 4 55.26 1.56 1.6622 7 1 4 55.48 1.22 1.6563 8 2 3 56.10 1.05 1.6393 9 3 0 56.73 1.06 1.6226 0 6 0 57.10 1.74 1.6130 10 2 0 57.64 2.46 1.5991 9 1 3 57.84 1.13 1.5941 2 6 0 57.99 4.36 1.5905 6 4 3 58.19 2.47 1.5853 3 5 3 59.42 2.11 1.5554 0 0 6 59.79 1.24 1.5466 9 3 2 60.40 1.19 1.5326 0 6 2 60.76 1.02 1.5245 10 2 2 61.89 2.10 1.4992 8 2 4 62.00 2.82 1.4968 7 3 4 62.35 1.94 1.4892 1 5 4 62.64 2.08 1.4830 3 1 6 63.75 1.94 1.4599 2 2 6 63.85 1.25 1.4579 11 1 2 64.37 3.48 1.4474 7 5 2 64.61 1.43 1.4426 4 6 2 66.29 1.37 1.4100 6 6 0 66.77 1.39 1.4011 5 1 6 66.83 1.66 1.3999 4 2 6 66.94 1.02 1.3979 1 3 6 68.92 4.20 1.3625 12 0 2 69.48 1.32 1.3528 12 2 1 69.66 6.25 1.3497 6 6 2 69.92 1.68 1.3455 9 5 1 70.41 1.60 1.3372 3 7 1 71.05 3.30 1.3268 10 2 4 71.30 2.03 1.3228 8 4 4 71.71 1.82 1.3162 2 6 4 71.81 2.11 1.3145 6 2 6 71.84 1.04 1.3142 6 4 5 74.21 2.11 1.2779 11 3 3 75.01 1.63 1.2662 1 7 3 75.94 1.05 1.2530 4 4 6 77.46 1.72 1.2321 5 1 7 77.52 1.36 1.2313 4 2 7 77.62 1.65 1.2300 1 3 7 79.96 2.21 1.1998 10 4 4 80.85 2.31 1.1889 12 4 2 81.62 1.35 1.1796 12 2 4 81.79 1.04 1.1775 0 8 2 82.50 1.29 1.1692 3 7 4 82.73 2.90 1.1666 0 0 8 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.