Spinel Redfern S A T, Harrison R J, O'Neill H St C, Wood D R R American Mineralogist 84 (1999) 299-310 Thermodynamics and kinetics of cation ordering in MgAl2O4 spinel up to 1600 C from in situ neutron diffraction Data collected at IPNS, Argonne National Laboratory, T = 1107 K on cooling cycle, Mg.99Al2O4 _database_code_amcsd 0002190 CELL PARAMETERS: 8.1474 8.1474 8.1474 90.000 90.000 90.000 SPACE GROUP: Fd3m X-RAY WAVELENGTH: 1.541838 Cell Volume: 540.825 Density (g/cm3): 3.494 MAX. ABS. INTENSITY / VOLUME**2: 17.71067899 RIR: 1.650 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 18.87 29.84 4.7039 1 1 1 8 31.05 32.67 2.8805 2 2 0 12 36.58 100.00 2.4565 3 1 1 24 38.27 1.23 2.3520 2 2 2 8 44.48 55.62 2.0368 4 0 0 6 55.23 8.80 1.6631 4 2 2 24 58.90 3.20 1.5680 3 3 3 8 58.90 38.56 1.5680 5 1 1 24 64.72 65.90 1.4403 4 4 0 12 68.08 2.72 1.3772 5 3 1 48 73.52 2.63 1.2882 6 2 0 24 76.70 8.70 1.2425 5 3 3 24 81.92 5.86 1.1760 4 4 4 8 85.02 2.12 1.1409 5 5 1 24 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.