Mineralogical Magazine -- Hålenius 68 (2): 335 Figure 2

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FIG. 2. Polarized optical absorption single-crystal spectra of the close to end-member henritermierite (sample #97) from the N’Chwaning II mine. Positions ${nu}$ ₁– ${nu}$ ₄ indicate band peaks and shoulders. The absorber thickness was 19 µm.