Figure 2.

SEM photographs illustrating dominant morphologies and textures in hydrozincite bio-precipitates from Rio Naracauli. (a) General appearance of the bio-precipitates displaying botryoidal structure, (b) higher magnification of spheroids showing close association with organic strands thought to be EPS, (c) close-up view of the spheroids consisting of platy/needle-like aggregates and (d) even higher magnification image showing globular nature of early formed hydrozincite in association with EPS.