PACMANUS is an actively-forming seafloor analogue of volcanic-hosted massive sulfide orebodies, situated on the crest
of an andesite-dacite-rhyodacite ridge overlying rifted older arc crust in a back-arc basin. Hydrothermal deposits range
from Mn-oxide crusts to Cu-Zn-rich massive sulfide mounds and chimneys containing significant Au and Ag. Preliminary
data suggest a substantial magmatic component to fluids and metal sources, and we speculate that PACMANUS is the cap
to a complete hydrothermal system including subvolcanic and intrusive-related mineralisation.