Gaudefroyite Visible Spectra (400 - 1100 nm)

The guadefroyite absorption spectrum

• GRR 2833a spectrum; This crystal is black when thick and orange when 22 µm thin. It is comes from the N'Chwaning Mine in the Kalahari Fields, South Africa. Plotted as 22 µm thick. Data Files: E perp c ; E \\c

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