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, 2nd run, T = 500 C _database_code_amcsd 0008786 CELL PARAMETERS: 8.1338 8.1338 8.1338 90.000 90.000 90.000 SPACE GROUP: Fd3m X-RAY WAVELENGTH: 1.541838 Cell Volume: 538.122 Density (g/cm3): 3.595 MAX. ABS. INTENSITY / VOLUME**2: 19.22545003 RIR: 1.741 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 18.90 40.88 4.6961 1 1 1 8 31.10 31.71 2.8757 2 2 0 12 36.64 100.00 2.4524 3 1 1 24 44.56 56.92 2.0334 4 0 0 6 55.33 8.10 1.6603 4 2 2 24 59.01 2.76 1.5654 3 3 3 8 59.01 42.91 1.5654 5 1 1 24 64.84 66.79 1.4379 4 4 0 12 68.21 3.80 1.3749 5 3 1 48 73.66 2.29 1.2861 6 2 0 24 76.85 9.30 1.2404 5 3 3 24 77.91 1.23 1.2262 6 2 2 24 82.09 6.30 1.1740 4 4 4 8 85.20 3.03 1.1390 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.