Uraninite Diffraction data computed using the structure from the paper listed below, along with the cell parameters refined from the powder pattern Wyckoff R W G Crystal Structures 1 (1963) 239-444 Second edition. Interscience Publishers, New York, New York Fluorite structure CELL PARAMETERS: 5.476464 5.476464 5.476464 90.00000 90.00000 90.00000 SPACE GROUP: Fm3m X-RAY WAVELENGTH: 1.541838 2-THETA INTENSITY D-SPACING H K L 28.24 100.00 3.1618 1 1 1 32.72 36.19 2.7382 2 0 0 46.92 44.24 1.9362 2 2 0 55.65 38.97 1.6512 3 1 1 58.36 8.52 1.5809 2 2 2 68.51 5.84 1.3691 4 0 0 75.67 13.47 1.2564 3 3 1 78.00 9.77 1.2246 4 2 0 87.15 10.59 1.1179 4 2 2 87.15 10.59 1.1179 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.