Evidence for a subseafloor replacement origin of the Cretaceous Palma volcanogenic massive sulfide deposit, central Peru
The Palma volcanogenic massive sulfide deposit is one of the most recent significant base metal discoveries in central Peru. Base-metal mineralization can be followed over a strike length of over 2.5 km, with the currently best defined ore zone having an inferred resource of 5.59 million metric tons grading 7.43 wt % Zn, 1.50 wt % Pb, and 44.1 g/t Ag. The massive sulfides at Palma are hosted by a Cretaceous succession of hemipelagic mudstone that was intruded by basaltic dikes and sills. Contacts between the mafic intrusions and the enclosing carbonaceous mudstone are frequently marked by the ...
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