Figure 2
Microtextural characteristics of pyrite (FeS2) and related mineralogy. Tubular, beaded, and spherical SRB traces composed of FeS2 were distributed within pyrrhotite (FeS). (a) Micro-hydrothermal vents, filamentous bodies, and FeS. (b) Tubular and spherical bodies, and FeS. The FeS2-containing filamentous and tubular SRB in (c) and (d) were metasomatised with arsenopyrite, sphalerite, and cassiterite to form a residual structure. (e‒h) Backscattered electron (BSE) image of FeS2 and related mineralogy. po = pyrrhotite (FeS); py = pyrite (FeS2); apy = arsenopyrite; sp = sphalerite; cst = cassiterite. The white arrows in (a) and (c) indicate micro-hydrothermal vents.
