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_6a Locality: Migiandone mine, Val d'Ossola, Italy _database_code_amcsd 0020410 CELL PARAMETERS: 8.0944 8.0944 8.0944 90.000 90.000 90.000 SPACE GROUP: Fd-3m X-RAY WAVELENGTH: 1.541838 Cell Volume: 530.340 Density (g/cm3): 4.578 MAX. ABS. INTENSITY / VOLUME**2: 56.60933530 RIR: 4.027 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 18.99 4.33 4.6733 1 1 1 8 31.26 76.15 2.8618 2 2 0 12 36.83 100.00 2.4406 3 1 1 24 44.79 4.49 2.0236 4 0 0 6 49.06 9.37 1.8570 3 3 1 24 55.63 23.97 1.6523 4 2 2 24 59.32 35.88 1.5578 5 1 1 24 59.32 4.36 1.5578 3 3 3 8 65.20 44.07 1.4309 4 4 0 12 68.59 1.18 1.3682 5 3 1 48 74.08 8.31 1.2798 6 2 0 24 77.30 10.01 1.2344 5 3 3 24 85.71 1.26 1.1334 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.