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: L-Fe, 3rd run, T = 900 C _database_code_amcsd 0008823 CELL PARAMETERS: 8.1627 8.1627 8.1627 90.000 90.000 90.000 SPACE GROUP: Fd3m X-RAY WAVELENGTH: 1.541838 Cell Volume: 543.878 Density (g/cm3): 3.525 MAX. ABS. INTENSITY / VOLUME**2: 18.41346226 RIR: 1.701 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 18.83 28.36 4.7127 1 1 1 8 30.99 33.31 2.8860 2 2 0 12 36.51 100.00 2.4611 3 1 1 24 44.39 51.58 2.0407 4 0 0 6 55.12 8.83 1.6662 4 2 2 24 58.78 36.98 1.5709 5 1 1 24 58.78 3.20 1.5709 3 3 3 8 64.59 61.30 1.4430 4 4 0 12 67.94 2.34 1.3797 5 3 1 48 73.36 2.61 1.2906 6 2 0 24 76.53 8.22 1.2448 5 3 3 24 81.74 4.99 1.1782 4 4 4 8 84.83 1.77 1.1430 5 5 1 24 89.94 3.81 1.0908 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.