Ilvaite Visible Spectra (400 - 2500 nm)
Ilvaite is of interest because it is a stoichiometric
intrvalence charge-transfer mineral with the formula: CaFe3+Fe2+2(Si2O7)O(OH).
Image of the ilvaite absorption spectrum
- 
Ilvaite
spectrum;
GRR 556 from Elba, Italy.   Plotted as 0.010 mm thick. The
color 
of this material
comes from  Fe2+ - Fe3+
intervalence charge transfer. Data Files: E || alpha; E || beta; E || gamma. 
 
 
Back
to the list of minerals
  Back
to the Index of Data Files
 Back
to the
Mineral Spectroscopy home page  
last
upgraded 6-Feb-2024