Cerro Lindo is a Kuroko-style VMS deposit with economic grades of Zn, Cu, Pb, and Ag.
The Cerro Lindo deposit is 1,500 meters long, 1,000 meters wide, and has a current (2023) vertical development of 470 meters below the surface. Mineralization consists of at least 10 discrete mineralized zones. The Cerro Lindo deposit comprises lens-shaped massive bodies, composed of pyrite (50.0% to 90.0%), yellow sphalerite, brown sphalerite, chalcopyrite, and minor galena. Significant barite is present mainly in the upper portions of the deposit. A secondary-enrichment zone, composed of chalcocite and covellite, has formed near the surface where massive sulfides have oxidized. Silver-rich powdery barite remains at the surface as a relic of sulfide oxidation and leaching.
In 2023, mineral exploration in Cerro Lindo focused on extensions of known ore bodies to the southeast of Cerro Lindo and on the Pucasalla target, as well as starting drilling tests at the Patahuasi Millay target, located 500 meters to the northwest of Cerro Lindo mine.
Mineralization is hosted by a pyroclastic unit composed of ash and lapilli-type polymictic tuffs with subrounded, well classified fragments. Some lapilli have centimetre-scale, pencil-like shapes, due to development of an incipient schistosity.
Eight styles of mineralization were identified at the Cerro Lindo deposit:
1. Pyritic, homogeneous, primary massive sulphide (SPP): This unit includes almost exclus ........