Babingtonite Visible Spectra (380 - 1500 nm)
Babintonite appears black in bulk, but is dark green when thin. Its
color
comes from the intervalence charge transfer interaction between Fe2+
and Fe3+. Ca2(Fe,Mn)FeSi5O14(OH)
Image of the babingtonite absorption spectrum
-
GRR 597
spectrum; Very
dark green babingtonite from Bombay, India. 0.077 mm thick sample. Data
Files: E||a ; E||c;
Link
to references to visible spectroscopy of
babingtonite.
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revised
3-Jul-2022
