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 = 549 K and P = 0.4 GPa, inversion parameter x = .262 _database_code_amcsd 0003570 CELL PARAMETERS: 8.0727 8.0727 8.0727 90.000 90.000 90.000 SPACE GROUP: Fd3m X-RAY WAVELENGTH: 1.541838 Cell Volume: 526.086 Density (g/cm3): 3.592 MAX. ABS. INTENSITY / VOLUME**2: 17.72185062 RIR: 1.607 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 19.04 32.18 4.6608 1 1 1 8 31.34 34.90 2.8541 2 2 0 12 36.93 100.00 2.4340 3 1 1 24 38.64 2.35 2.3304 2 2 2 8 44.91 57.81 2.0182 4 0 0 6 55.79 9.31 1.6478 4 2 2 24 59.50 41.32 1.5536 5 1 1 24 59.50 2.54 1.5536 3 3 3 8 65.40 69.68 1.4271 4 4 0 12 68.80 2.28 1.3645 5 3 1 48 74.31 2.74 1.2764 6 2 0 24 77.54 8.39 1.2311 5 3 3 24 82.85 6.03 1.1652 4 4 4 8 86.00 2.31 1.1304 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.