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, 1st run, T = 28 C _database_code_amcsd 0008780 CELL PARAMETERS: 8.1019 8.1019 8.1019 90.000 90.000 90.000 SPACE GROUP: Fd3m X-RAY WAVELENGTH: 1.541838 Cell Volume: 531.815 Density (g/cm3): 3.638 MAX. ABS. INTENSITY / VOLUME**2: 19.41784198 RIR: 1.738 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 18.97 40.44 4.6776 1 1 1 8 31.23 32.74 2.8645 2 2 0 12 36.79 100.00 2.4428 3 1 1 24 44.74 56.45 2.0255 4 0 0 6 55.57 8.84 1.6538 4 2 2 24 59.26 2.65 1.5592 3 3 3 8 59.26 44.17 1.5592 5 1 1 24 65.13 69.18 1.4322 4 4 0 12 68.52 3.13 1.3695 5 3 1 48 74.00 2.65 1.2810 6 2 0 24 77.21 9.58 1.2355 5 3 3 24 82.48 6.17 1.1694 4 4 4 8 85.61 2.87 1.1345 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.