Orthopinakiolite Visible Spectra (300 - 1600 nm)

Image of the orthopinakiolite absorption spectrum

• GRR 354 spectrum; from Langban, Sweden.   Plotted as 0.013 mm thick. The black color of this mineral, when thick, comes from  Mn³⁺ and possibly the Mn²⁺ - Mn³⁺ intervalence charge transfer. The quality of this data is moderate. Data Files: Not Available: E|| alpha'; E|| gamma'.

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