Fig. 4 | Scientific Reports

Fig. 4

From: Coupled hydrothermal venting and hydrocarbon seepage discovered at Conical Seamount, Papua New Guinea

Fig. 4

Specimen and reflected light microscopic images of the Au-rich polymetallic breccia. (A) Polymetallic breccia with pyrite/marcasite (py/mrc) bearing mafic clast embedded in a sulfide-rich amorphous silica (a-Sil) matrix overprinted by orpiment (orp). (B) Dendritic intergrowth of sphalerite (sp), chalcopyrite (cpy), and galena (gn). (C) 20 μm sized electrum associated with tennantite-tetrahedrite (ttn-ttr), sphalerite, orpiment, and amorphous silica.

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