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: H-Cr, 3rd run, T = 1000 C _database_code_amcsd 0008809 CELL PARAMETERS: 8.1791 8.1791 8.1791 90.000 90.000 90.000 SPACE GROUP: Fd3m X-RAY WAVELENGTH: 1.541838 Cell Volume: 547.163 Density (g/cm3): 3.560 MAX. ABS. INTENSITY / VOLUME**2: 18.88571762 RIR: 1.727 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 18.79 36.80 4.7222 1 1 1 8 30.92 30.00 2.8917 2 2 0 12 36.43 100.00 2.4661 3 1 1 24 44.30 54.71 2.0448 4 0 0 6 55.00 7.66 1.6696 4 2 2 24 58.65 3.08 1.5741 3 3 3 8 58.65 36.72 1.5741 5 1 1 24 64.44 60.02 1.4459 4 4 0 12 67.78 3.12 1.3825 5 3 1 48 73.18 2.17 1.2932 6 2 0 24 76.35 7.97 1.2473 5 3 3 24 77.40 1.09 1.2330 6 2 2 24 81.54 5.31 1.1806 4 4 4 8 84.62 2.09 1.1453 5 5 1 24 89.71 3.25 1.0930 6 4 2 48 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.