Zinc Diffraction data computed using the structure from the paper listed below, along with the cell parameters refined from the powder pattern of R070497 Wyckoff R W G Crystal Structures 1 (1963) 7-83 Second edition. Interscience Publishers, New York, New York Hexagonal closest packed, hcp, structure CELL PARAMETERS: 2.670142 2.670142 4.955198 90.00000 90.00000 120.0000 SPACE GROUP: P6_3/mmc ATOM X Y Z OCCUPANCY ISO(B) Zn 0.33333 0.66667 0.25000 1.000 0.700 X-RAY WAVELENGTH: 0.710730 BOUNDS ON TWO THETA: 2.0 60.0 LIMITS IMPOSED ON THE INDICES ARE: +/- 3 +/- 3 +/- 6 MAX. ABS. INTENSITY / VOLUME**2: 1246.063206 The INTENSITY cut off value is 1.00 2-THETA INTENSITY D-SPACING H K L 16.49 36.02 2.4776 0 0 2 17.68 22.22 2.3124 1 0 0 19.52 100.00 2.0955 1 0 1 24.25 16.91 1.6905 1 0 2 30.63 22.09 1.3441 1 0 3 30.84 14.34 1.3351 1 1 0 33.30 3.54 1.2388 0 0 4 35.16 16.97 1.1753 1 1 2 35.76 1.98 1.1562 2 0 0 36.75 10.55 1.1260 2 0 1 37.94 3.07 1.0920 1 0 4 39.60 2.53 1.0477 2 0 2 44.01 4.67 0.9472 2 0 3 45.86 3.83 0.9109 1 0 5 46.01 5.02 0.9081 1 1 4 47.91 1.03 0.8740 2 1 0 48.70 5.68 0.8607 2 1 1 51.00 1.50 0.8242 2 1 2 54.69 3.13 0.7725 2 1 3 54.82 1.03 0.7708 3 0 0 56.27 1.35 0.7525 2 0 5 57.64 1.58 0.7360 3 0 2 57.64 1.58 0.7360 3 0 2 XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.