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. 2013 Jun;13(6):543–549. doi: 10.1089/ast.2012.0872

FIG. 4.

FIG. 4.

Sample 4 (785 nm excitation). (A) Clear signatures of disordered carbon (1300–1600 cm−1) and quartz (below 500 cm−1); (B) strong disordered carbon signal with two peaks of feldspar and very weak features of hematite (below 600 cm−1); (C) disordered carbon and clear hematite features below 700 cm−1, note the shoulder at around 1320 cm−1 representative of disordered hematite; (D) pyrite.