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 = 200 C _database_code_amcsd 0008796 CELL PARAMETERS: 8.1180 8.1180 8.1180 90.000 90.000 90.000 SPACE GROUP: Fd3m X-RAY WAVELENGTH: 1.541838 Cell Volume: 534.992 Density (g/cm3): 3.641 MAX. ABS. INTENSITY / VOLUME**2: 20.43098363 RIR: 1.827 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 18.93 40.70 4.6869 1 1 1 8 31.16 30.72 2.8701 2 2 0 12 36.72 100.00 2.4477 3 1 1 24 44.65 57.34 2.0295 4 0 0 6 55.45 8.28 1.6571 4 2 2 24 59.13 2.93 1.5623 3 3 3 8 59.13 44.15 1.5623 5 1 1 24 64.99 69.89 1.4351 4 4 0 12 68.36 4.01 1.3722 5 3 1 48 73.83 2.47 1.2836 6 2 0 24 77.03 10.06 1.2380 5 3 3 24 78.09 1.35 1.2238 6 2 2 24 82.28 6.86 1.1717 4 4 4 8 85.40 3.27 1.1367 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.