Raman Spectra of Fluorine Limonite.

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Fluorine
	Raman spectrum of a large fluorite crystal. The spectrum is made of one peak superimposed on a large background. After baseline correction, the spectrum appears rather noisy.
Limonite
	Picture of a polished Limonite section. Spectrum taken on a brown ring shown by the arrow. The Raman spectrum obtained can be compared with a reference Goethite.

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