Oxide Minerals Visible Spectra (generally 350 - 2500 nm)

Images of representative oxides

Visible Spectra: (c = polarized parallel to c; a = polarized perpendicular to c)

• ruby spectrum; Corundum, var. ruby (red), Thailand
• sapphire spectrum; Corundum, var. sapphire (blue). 
• hematite spectrum; Hematite. 
• manganite spectrum; Manganite, N'Cwaning Mine, South Africa, deep red color.
• rutile spectrum; Rutile, Kenya, deep red color.

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