Spinel Meducin F, Redfern S A T, Le Godec Y, Stone H J, Tucker M G, Dove M T, Marshall W G American Mineralogist 89 (2004) 981-986 Study of cation order-disorder in MgAl2O4 spinel by in situ neutron diffraction up to 1600 K and 3.2 GPa Sample at T = 381 K and P = 0.5 GPa, inversion parameter x = .365 _database_code_amcsd 0003578 CELL PARAMETERS: 8.0800 8.0800 8.0800 90.000 90.000 90.000 SPACE GROUP: Fd3m X-RAY WAVELENGTH: 1.541838 Cell Volume: 527.514 Density (g/cm3): 3.582 MAX. ABS. INTENSITY / VOLUME**2: 18.70076853 RIR: 1.700 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 19.02 28.10 4.6650 1 1 1 8 31.31 33.90 2.8567 2 2 0 12 36.90 100.00 2.4362 3 1 1 24 38.60 1.80 2.3325 2 2 2 8 44.87 55.37 2.0200 4 0 0 6 55.73 9.96 1.6493 4 2 2 24 59.44 41.20 1.5550 5 1 1 24 59.44 3.16 1.5550 3 3 3 8 65.33 71.24 1.4284 4 4 0 12 68.73 2.12 1.3658 5 3 1 48 74.23 3.29 1.2776 6 2 0 24 77.46 9.49 1.2322 5 3 3 24 82.76 6.00 1.1662 4 4 4 8 85.90 2.03 1.1314 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.