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 = 450 C _database_code_amcsd 0008783 CELL PARAMETERS: 8.1305 8.1305 8.1305 90.000 90.000 90.000 SPACE GROUP: Fd3m X-RAY WAVELENGTH: 1.541838 Cell Volume: 537.467 Density (g/cm3): 3.599 MAX. ABS. INTENSITY / VOLUME**2: 19.29329030 RIR: 1.745 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 18.90 40.60 4.6941 1 1 1 8 31.11 31.65 2.8746 2 2 0 12 36.66 100.00 2.4514 3 1 1 24 44.58 57.12 2.0326 4 0 0 6 55.36 8.11 1.6596 4 2 2 24 59.04 2.77 1.5647 3 3 3 8 59.04 42.96 1.5647 5 1 1 24 64.87 67.20 1.4373 4 4 0 12 68.24 3.82 1.3743 5 3 1 48 73.69 2.30 1.2855 6 2 0 24 76.89 9.34 1.2399 5 3 3 24 77.95 1.19 1.2257 6 2 2 24 82.13 6.39 1.1735 4 4 4 8 85.24 3.06 1.1385 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.