Fig. 2
From: Abiotic polycyclic aromatic hydrocarbons originating from the sub-oceanic mantle

Raman spectrum obtained from an inclusion in sample #01. Red and black triangles indicate peaks derived from C–O–H phases and host Cpx, respectively. Similar spectra were obtained from seven inclusions in sample #01 and one inclusion in sample #02. Abbreviation: a.u. = arbitrary units.