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. 2013 Jul 10;8(7):e68572. doi: 10.1371/journal.pone.0068572

Figure 9. Comparison of Raman spectra.

Figure 9

Raman spectra of the red substance trapped in two different pits on the surface of the Fumane Aspa marginata shell (a, b) and reference spectra for hematite (c, d, e) from the Rruff database [99].