Spinel Princivalle F, Martignago F, Dal Negro A American Mineralogist 91 (2006) 313-318 Kinetics of cation ordering in natural Mg(Al,Cr3+)2O4 spinels Locality: Olkhon metamorphic complex, Lake Baikal, Russia Sample: Ch1, annealed at T = 850 C, ordering, t = 0.25 m _database_code_amcsd 0004079 CELL PARAMETERS: 8.0907 8.0907 8.0907 90.000 90.000 90.000 SPACE GROUP: Fd3m X-RAY WAVELENGTH: 1.541838 Cell Volume: 529.613 Density (g/cm3): 3.586 MAX. ABS. INTENSITY / VOLUME**2: 19.09372582 RIR: 1.734 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 19.00 31.19 4.6712 1 1 1 8 31.27 32.10 2.8605 2 2 0 12 36.85 100.00 2.4394 3 1 1 24 44.81 55.17 2.0227 4 0 0 6 55.65 8.89 1.6515 4 2 2 24 59.35 3.28 1.5571 3 3 3 8 59.35 40.26 1.5571 5 1 1 24 65.23 67.39 1.4302 4 4 0 12 68.63 2.96 1.3676 5 3 1 48 74.12 2.76 1.2793 6 2 0 24 77.34 9.40 1.2338 5 3 3 24 82.62 6.09 1.1678 4 4 4 8 85.76 2.34 1.1329 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.