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 = 1506 K on heating cycle, Mg.99Al2O4 _database_code_amcsd 0002177 CELL PARAMETERS: 8.1784 8.1784 8.1784 90.000 90.000 90.000 SPACE GROUP: Fd3m X-RAY WAVELENGTH: 1.541838 Cell Volume: 547.018 Density (g/cm3): 3.454 MAX. ABS. INTENSITY / VOLUME**2: 17.10205680 RIR: 1.612 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 18.79 27.95 4.7218 1 1 1 8 30.93 32.28 2.8915 2 2 0 12 36.44 100.00 2.4659 3 1 1 24 38.12 1.21 2.3609 2 2 2 8 44.30 54.58 2.0446 4 0 0 6 55.01 8.44 1.6694 4 2 2 24 58.66 35.39 1.5739 5 1 1 24 58.66 3.29 1.5739 3 3 3 8 64.45 61.63 1.4457 4 4 0 12 67.79 2.48 1.3824 5 3 1 48 73.19 2.45 1.2931 6 2 0 24 76.36 7.87 1.2472 5 3 3 24 81.55 5.30 1.1804 4 4 4 8 84.62 1.74 1.1452 5 5 1 24 89.72 3.29 1.0929 6 4 2 48 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.