Amblygonite Visible Spectra (400 - 1100 nm)

The amblygonite absorption spectrum

• GRR 1833 spectrum; This crystal is pale green and is atypical for the species. It is believed to come from Brazil. The three polarizations correspond to the principal extinction directions. Plotted for 12.05 mm thickness. Data Files: first polarization; second polarization; third polarization. Iron, titanium and tin are the major trace elements in this crystal.
• GRR 872 spectrum. This is a pale yellow-orange crystal believed to come from Brazil. Thickness: 9.6 mm. Data  Files:  alpha;  gamma  . Titanium and iron are the major trace elements in this crystal.

Link to references about the spectra of amblygonite

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updated 5-Jul-2022