Tyrrellite Diffraction data computed using the structute from the paper listed below, along with the cell parameters refined from single crystal data of R060481 CELL PARAMETERS: 10.0030 10.0030 10.0030 90.000 90.000 90.000 ALTERNATE SETTING FOR SPACE GROUP: Fd3m ATOM X Y Z OCCUPANCY ISO(B) Cu 0.12500 0.12500 0.12500 0.042 0.805 Co 0.50000 0.00000 0.00000 0.057 0.493 Se 0.26192 -0.01192 -0.01192 0.167 0.557 X-RAY WAVELENGTH: 1.541838 BOUNDS ON TWO THETA: 0.0 90.0 LIMITS IMPOSED ON THE INDICES ARE: +/- 9 +/- 9 +/- 9 MAX. ABS. INTENSITY / VOLUME**2: 3.054292307 The INTENSITY cut off value is 1.00 2-THETA INTENSITY D-SPACING H K L 15.34 16.49 5.7752 1 1 1 25.18 2.20 3.5366 2 2 0 29.62 2.18 3.0160 3 1 1 30.97 100.00 2.8876 2 2 2 35.91 76.35 2.5008 4 0 0 39.26 4.99 2.2948 3 3 1 47.21 15.95 1.9251 5 1 1 47.21 2.01 1.9251 3 3 3 51.69 56.85 1.7683 4 4 0 54.25 2.88 1.6908 5 3 1 61.49 30.50 1.5080 6 2 2 64.55 13.83 1.4438 4 4 4 66.79 1.03 1.4007 7 1 1 66.79 6.76 1.4007 5 5 1 72.59 2.68 1.3023 7 3 1 72.59 3.21 1.3023 5 5 3 76.13 6.84 1.2504 8 0 0 78.22 4.26 1.2221 7 3 3 83.74 2.47 1.1550 5 5 5 84.42 9.46 1.1474 6 6 2 87.15 14.12 1.1184 8 4 0 89.20 2.84 1.0980 9 1 1 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.