Nickeline Diffraction data computed using the structure from the paper listed below, along with the cell parameters refined from the powder pattern for R060906 Wyckoff R W G Crystal Structures 1 (1963) 85-237 Second edition. Interscience Publishers, New York, New York Note: ideal nickel arsenide structure CELL PARAMETERS: 3.602000 3.602000 5.009000 90.00000 90.00000 120.0000 SPACE GROUP: P6_3mc X-RAY WAVELENGTH: 1.541838 2-THETA INTENSITY D-SPACING H K L 28.42 12.54 3.1408 1 0 0 33.62 100.00 2.6655 1 0 1 46.18 92.40 1.9653 1 0 2 50.30 66.29 1.8134 1 1 0 58.77 1.14 1.5704 2 0 0 61.86 15.26 1.4993 2 0 1 62.70 14.62 1.4812 1 0 3 70.64 21.74 1.3327 2 0 2 75.42 5.64 1.2598 0 0 4 83.64 3.95 1.1555 2 1 1 84.39 5.80 1.1471 2 0 3 84.39 5.80 1.1471 2 0 3 XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.