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 = 887 K and P = 1.7 GPa, inversion parameter x = .509 _database_code_amcsd 0003577 CELL PARAMETERS: 8.1050 8.1050 8.1050 90.000 90.000 90.000 SPACE GROUP: Fd3m X-RAY WAVELENGTH: 1.541838 Cell Volume: 532.426 Density (g/cm3): 3.549 MAX. ABS. INTENSITY / VOLUME**2: 17.34083025 RIR: 1.591 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 18.97 29.53 4.6794 1 1 1 8 31.21 35.60 2.8656 2 2 0 12 36.78 100.00 2.4437 3 1 1 24 38.48 2.41 2.3397 2 2 2 8 44.73 55.73 2.0262 4 0 0 6 55.55 9.49 1.6544 4 2 2 24 59.24 2.60 1.5598 3 3 3 8 59.24 39.74 1.5598 5 1 1 24 65.10 66.81 1.4328 4 4 0 12 68.49 1.86 1.3700 5 3 1 48 73.96 2.84 1.2815 6 2 0 24 77.18 8.03 1.2360 5 3 3 24 82.45 5.29 1.1699 4 4 4 8 85.57 1.86 1.1349 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.