Gahnite Fregola R A, Skogby H, Bosi F, D'Ippolito V, Andreozzi G B, Halenius U American Mineralogist 99 (2014) 2187-2195 Optical absorption spectroscopy study of the causes for color variations in natural Fe-bearing gahnite: Insights from iron valency and site distribution data Note: Sample Sp2781_6c Locality: Migiandone mine, Val d'Ossola, Italy _database_code_amcsd 0020411 CELL PARAMETERS: 8.1103 8.1103 8.1103 90.000 90.000 90.000 SPACE GROUP: Fd-3m X-RAY WAVELENGTH: 1.541838 Cell Volume: 533.471 Density (g/cm3): 4.403 MAX. ABS. INTENSITY / VOLUME**2: 49.34675571 RIR: 3.649 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 18.95 2.45 4.6825 1 1 1 8 31.19 74.00 2.8674 2 2 0 12 36.75 100.00 2.4453 3 1 1 24 44.69 6.26 2.0276 4 0 0 6 48.95 8.68 1.8606 3 3 1 24 55.51 22.68 1.6555 4 2 2 24 59.20 4.09 1.5608 3 3 3 8 59.20 36.77 1.5608 5 1 1 24 65.06 45.70 1.4337 4 4 0 12 73.91 7.69 1.2824 6 2 0 24 77.12 9.90 1.2368 5 3 3 24 85.50 1.11 1.1357 7 1 1 24 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.