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 = 1363 K and P = 2.8 GPa, inversion parameter x = .571 _database_code_amcsd 0003574 CELL PARAMETERS: 8.1350 8.1350 8.1350 90.000 90.000 90.000 SPACE GROUP: Fd3m X-RAY WAVELENGTH: 1.541838 Cell Volume: 538.360 Density (g/cm3): 3.510 MAX. ABS. INTENSITY / VOLUME**2: 15.89409805 RIR: 1.474 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 18.89 31.76 4.6967 1 1 1 8 31.10 36.84 2.8762 2 2 0 12 36.64 100.00 2.4528 3 1 1 24 38.33 3.06 2.3484 2 2 2 8 44.55 57.00 2.0338 4 0 0 6 55.32 8.66 1.6605 4 2 2 24 59.00 37.68 1.5656 5 1 1 24 59.00 2.10 1.5656 3 3 3 8 64.83 62.06 1.4381 4 4 0 12 68.20 1.81 1.3751 5 3 1 48 73.65 2.26 1.2863 6 2 0 24 76.84 6.58 1.2406 5 3 3 24 82.08 4.83 1.1742 4 4 4 8 85.18 1.81 1.1391 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.