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, 3rd run, T = 700 C _database_code_amcsd 0008791 CELL PARAMETERS: 8.1502 8.1502 8.1502 90.000 90.000 90.000 SPACE GROUP: Fd3m X-RAY WAVELENGTH: 1.541838 Cell Volume: 541.383 Density (g/cm3): 3.573 MAX. ABS. INTENSITY / VOLUME**2: 19.04132562 RIR: 1.735 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 18.86 36.89 4.7055 1 1 1 8 31.04 31.02 2.8815 2 2 0 12 36.57 100.00 2.4574 3 1 1 24 44.46 54.49 2.0375 4 0 0 6 55.21 8.14 1.6637 4 2 2 24 58.88 3.08 1.5685 3 3 3 8 58.88 39.17 1.5685 5 1 1 24 64.70 62.72 1.4408 4 4 0 12 68.06 3.17 1.3776 5 3 1 48 73.49 2.39 1.2887 6 2 0 24 76.67 8.71 1.2429 5 3 3 24 77.72 1.25 1.2287 6 2 2 24 81.89 5.50 1.1764 4 4 4 8 84.99 2.28 1.1413 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.