Spinel Martignago F, Dal Negro A, Carbonin S Physics and Chemistry of Minerals 30 (2003) 401-408 How Cr3+ and Fe3+ affect Mg-Al order-disorder transformation at high temperature in natural spinels Sample: M-Cr, 1st run, T = 200 C _database_code_amcsd 0008781 CELL PARAMETERS: 8.1116 8.1116 8.1116 90.000 90.000 90.000 SPACE GROUP: Fd3m X-RAY WAVELENGTH: 1.541838 Cell Volume: 533.727 Density (g/cm3): 3.624 MAX. ABS. INTENSITY / VOLUME**2: 19.83846025 RIR: 1.782 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 18.95 40.17 4.6832 1 1 1 8 31.19 31.59 2.8679 2 2 0 12 36.75 100.00 2.4457 3 1 1 24 44.69 57.09 2.0279 4 0 0 6 55.50 8.37 1.6558 4 2 2 24 59.19 2.86 1.5611 3 3 3 8 59.19 44.20 1.5611 5 1 1 24 65.04 69.35 1.4339 4 4 0 12 68.42 3.89 1.3711 5 3 1 48 73.89 2.46 1.2826 6 2 0 24 77.10 9.93 1.2370 5 3 3 24 78.16 1.31 1.2229 6 2 2 24 82.36 6.68 1.1708 4 4 4 8 85.49 3.21 1.1359 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.