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 = 1299 K on cooling cycle, Mg.99Al2O4 _database_code_amcsd 0002187 CELL PARAMETERS: 8.1620 8.1620 8.1620 90.000 90.000 90.000 SPACE GROUP: Fd3m X-RAY WAVELENGTH: 1.541838 Cell Volume: 543.746 Density (g/cm3): 3.475 MAX. ABS. INTENSITY / VOLUME**2: 17.46444430 RIR: 1.636 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 18.83 28.85 4.7124 1 1 1 8 30.99 32.46 2.8857 2 2 0 12 36.51 100.00 2.4609 3 1 1 24 38.20 1.19 2.3562 2 2 2 8 44.40 55.06 2.0405 4 0 0 6 55.13 8.63 1.6661 4 2 2 24 58.78 3.27 1.5708 3 3 3 8 58.78 37.12 1.5708 5 1 1 24 64.59 63.94 1.4429 4 4 0 12 67.94 2.63 1.3796 5 3 1 48 73.36 2.55 1.2905 6 2 0 24 76.54 8.36 1.2447 5 3 3 24 81.75 5.61 1.1781 4 4 4 8 84.83 1.95 1.1429 5 5 1 24 89.95 3.64 1.0907 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.