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 = 1427 K on cooling cycle, Mg.99Al2O4 _database_code_amcsd 0002185 CELL PARAMETERS: 8.1724 8.1724 8.1724 90.000 90.000 90.000 SPACE GROUP: Fd3m X-RAY WAVELENGTH: 1.541838 Cell Volume: 545.811 Density (g/cm3): 3.462 MAX. ABS. INTENSITY / VOLUME**2: 17.20141211 RIR: 1.618 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 18.81 27.95 4.7183 1 1 1 8 30.95 32.42 2.8894 2 2 0 12 36.46 100.00 2.4641 3 1 1 24 38.15 1.25 2.3592 2 2 2 8 44.34 54.52 2.0431 4 0 0 6 55.05 8.57 1.6682 4 2 2 24 58.70 3.29 1.5728 3 3 3 8 58.70 35.75 1.5728 5 1 1 24 64.50 62.18 1.4447 4 4 0 12 67.85 2.42 1.3814 5 3 1 48 73.26 2.51 1.2922 6 2 0 24 76.42 7.97 1.2463 5 3 3 24 81.62 5.30 1.1796 4 4 4 8 84.70 1.74 1.1444 5 5 1 24 89.81 3.43 1.0921 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.