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 = 650 C _database_code_amcsd 0008805 CELL PARAMETERS: 8.1525 8.1525 8.1525 90.000 90.000 90.000 SPACE GROUP: Fd3m X-RAY WAVELENGTH: 1.541838 Cell Volume: 541.842 Density (g/cm3): 3.595 MAX. ABS. INTENSITY / VOLUME**2: 19.35163648 RIR: 1.753 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 18.85 41.63 4.7068 1 1 1 8 31.03 30.74 2.8823 2 2 0 12 36.56 100.00 2.4581 3 1 1 24 44.45 56.83 2.0381 4 0 0 6 55.20 7.72 1.6641 4 2 2 24 58.86 2.80 1.5689 3 3 3 8 58.86 41.33 1.5689 5 1 1 24 64.68 64.69 1.4412 4 4 0 12 68.03 3.88 1.3780 5 3 1 48 73.46 2.14 1.2890 6 2 0 24 76.64 8.89 1.2432 5 3 3 24 77.70 1.29 1.2290 6 2 2 24 81.86 6.15 1.1767 4 4 4 8 84.96 2.91 1.1416 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.