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 Ni8967d Locality: Jemaa, Kaduna, Nigeria _database_code_amcsd 0020408 CELL PARAMETERS: 8.0912 8.0912 8.0912 90.000 90.000 90.000 SPACE GROUP: Fd-3m X-RAY WAVELENGTH: 1.541838 Cell Volume: 529.711 Density (g/cm3): 4.598 MAX. ABS. INTENSITY / VOLUME**2: 57.65927937 RIR: 4.083 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 19.00 4.65 4.6715 1 1 1 8 31.27 76.45 2.8607 2 2 0 12 36.84 100.00 2.4396 3 1 1 24 44.81 4.27 2.0228 4 0 0 6 49.08 9.52 1.8562 3 3 1 24 55.65 24.27 1.6516 4 2 2 24 59.35 4.41 1.5572 3 3 3 8 59.35 35.84 1.5572 5 1 1 24 65.23 44.04 1.4303 4 4 0 12 68.62 1.27 1.3677 5 3 1 48 74.11 8.47 1.2793 6 2 0 24 77.33 10.08 1.2339 5 3 3 24 85.75 1.29 1.1330 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.