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 = 1015 K and P = 1.5 GPa, inversion parameter x = .386 _database_code_amcsd 0003572 CELL PARAMETERS: 8.1104 8.1104 8.1104 90.000 90.000 90.000 SPACE GROUP: Fd3m X-RAY WAVELENGTH: 1.541838 Cell Volume: 533.491 Density (g/cm3): 3.542 MAX. ABS. INTENSITY / VOLUME**2: 16.14856530 RIR: 1.485 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 18.95 32.61 4.6825 1 1 1 8 31.19 36.90 2.8675 2 2 0 12 36.75 100.00 2.4454 3 1 1 24 38.45 3.65 2.3413 2 2 2 8 44.69 57.75 2.0276 4 0 0 6 55.51 9.16 1.6555 4 2 2 24 59.20 38.72 1.5608 5 1 1 24 59.20 2.04 1.5608 3 3 3 8 65.05 64.88 1.4337 4 4 0 12 68.44 1.56 1.3709 5 3 1 48 73.91 2.50 1.2824 6 2 0 24 77.12 6.76 1.2368 5 3 3 24 82.38 5.00 1.1706 4 4 4 8 85.50 1.80 1.1357 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.