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: L-Fe, 2nd run, T = 450 C _database_code_amcsd 0008817 CELL PARAMETERS: 8.1280 8.1280 8.1280 90.000 90.000 90.000 SPACE GROUP: Fd3m X-RAY WAVELENGTH: 1.541838 Cell Volume: 536.971 Density (g/cm3): 3.569 MAX. ABS. INTENSITY / VOLUME**2: 18.82178032 RIR: 1.717 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 18.91 38.07 4.6927 1 1 1 8 31.12 32.98 2.8737 2 2 0 12 36.67 100.00 2.4507 3 1 1 24 44.59 56.64 2.0320 4 0 0 6 55.38 8.49 1.6591 4 2 2 24 59.05 2.77 1.5642 3 3 3 8 59.05 43.63 1.5642 5 1 1 24 64.90 68.29 1.4368 4 4 0 12 68.27 3.64 1.3739 5 3 1 48 73.72 2.42 1.2851 6 2 0 24 76.92 9.52 1.2395 5 3 3 24 77.97 1.12 1.2253 6 2 2 24 82.16 6.39 1.1732 4 4 4 8 85.27 3.04 1.1381 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.