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: Ch, annealed at T = 650 C, ordering, t = 12 m _database_code_amcsd 0004069 CELL PARAMETERS: 8.0862 8.0862 8.0862 90.000 90.000 90.000 SPACE GROUP: Fd3m X-RAY WAVELENGTH: 1.541838 Cell Volume: 528.729 Density (g/cm3): 3.575 MAX. ABS. INTENSITY / VOLUME**2: 18.80130127 RIR: 1.712 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 19.01 30.59 4.6686 1 1 1 8 31.29 32.66 2.8589 2 2 0 12 36.87 100.00 2.4381 3 1 1 24 44.83 55.20 2.0215 4 0 0 6 55.69 9.03 1.6506 4 2 2 24 59.39 40.55 1.5562 5 1 1 24 59.39 3.25 1.5562 3 3 3 8 65.27 67.81 1.4295 4 4 0 12 68.67 2.89 1.3668 5 3 1 48 74.17 2.80 1.2785 6 2 0 24 77.39 9.43 1.2331 5 3 3 24 82.68 6.09 1.1671 4 4 4 8 85.82 2.34 1.1323 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.