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, 1st run, T = 450 C _database_code_amcsd 0008798 CELL PARAMETERS: 8.1354 8.1354 8.1354 90.000 90.000 90.000 SPACE GROUP: Fd3m X-RAY WAVELENGTH: 1.541838 Cell Volume: 538.439 Density (g/cm3): 3.618 MAX. ABS. INTENSITY / VOLUME**2: 19.78873723 RIR: 1.781 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 18.89 42.02 4.6970 1 1 1 8 31.09 30.84 2.8763 2 2 0 12 36.64 100.00 2.4529 3 1 1 24 44.55 57.36 2.0338 4 0 0 6 55.32 7.89 1.6606 4 2 2 24 59.00 2.80 1.5657 3 3 3 8 59.00 42.98 1.5657 5 1 1 24 64.83 67.13 1.4381 4 4 0 12 68.20 4.06 1.3751 5 3 1 48 73.64 2.23 1.2863 6 2 0 24 76.84 9.41 1.2406 5 3 3 24 77.89 1.35 1.2265 6 2 2 24 82.07 6.54 1.1742 4 4 4 8 85.18 3.18 1.1392 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.