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, 3rd run, T = 600 C _database_code_amcsd 0008789 CELL PARAMETERS: 8.1419 8.1419 8.1419 90.000 90.000 90.000 SPACE GROUP: Fd3m X-RAY WAVELENGTH: 1.541838 Cell Volume: 539.731 Density (g/cm3): 3.584 MAX. ABS. INTENSITY / VOLUME**2: 19.05174716 RIR: 1.731 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 18.88 40.58 4.7007 1 1 1 8 31.07 31.64 2.8786 2 2 0 12 36.61 100.00 2.4549 3 1 1 24 44.51 56.21 2.0355 4 0 0 6 55.27 8.04 1.6620 4 2 2 24 58.94 2.80 1.5669 3 3 3 8 58.94 41.97 1.5669 5 1 1 24 64.77 65.17 1.4393 4 4 0 12 68.13 3.68 1.3762 5 3 1 48 73.57 2.26 1.2873 6 2 0 24 76.76 9.08 1.2416 5 3 3 24 77.82 1.29 1.2274 6 2 2 24 81.99 6.01 1.1752 4 4 4 8 85.09 2.83 1.1401 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.