The Yauli unit region shows mineralization related to polymetallic epithermal systems, replacement bodies and polymetallic vein systems, as well as porphyry mineralization and skarns, thus indicating the great potential of the area. The Ticlio stock, cropping out in the western part of the Morococha district, which located in the northwestern sector of the Yauli Dome, and sharing mineralization and alteration features with shallow-level porphyry Cu-Au deposits, is atypical for this area where Cu-Mo porphyry systems are predominant (e.g., the giant Toromocho porphyry Cu-Mo deposit; Lowell and Alvarez 2005; Kouzmanov et al. 2008). The Ticlio magmatichydrothermal system consists of a single porphyritic stock with granodioritic composition in the center of which a stockwork of dense quartz-magnetite, quartz and hairline magnetite veinlets was developed. Several hydrothermal alteration zones, typical of porphyry Cu systems, overprinted the stock. The Ticlio stock is a single granodioritic intrusion emplaced during the Late-Miocene between the Anticona diorite and Cretaceous dolomitic limestones of the Jumasha Formation. The intrusion covers about 0.25 km2 at surface. A series of basaltic xenoliths marks the eastern and southeastern fringe of the intrusion. An intrusive contact with the Anticona diorite delimits the stock to the east. A 10 cm-thick porphyritic dike trending N70-75 and several aplitic dikes having almost the same orientation crosscut the Ticlio intrusion. Three sy ........

(Translated from Spanish by Google Translate)
Ticlio is an underground mine, a part of Yauli unit.

Compared to 2021, there was an increase in the head grade of Zn by 7% and Pb by 2% due to a greater contribution from the Ramal Techo vein in the western zone and a decrease in grades of Cu by 6% and Ag by 11%. by variation of the geological model in the eastern zone.

Production came from using the sublevel stopping method.

The exploration was aimed at increasing the geological certainty of the Ramal Techo vein to guarantee compliance with production plans and incorporate new economic mineral resources on replacement bodies. The results obtained register high metallic contents of Zn, Pb, Cu and Ag.

During 2022, at the main San Nicolás substation, the change of the 4/5 MVA transformer for an 8/10 MVA transformer was carried out, the implementation of medium voltage switching equipment (11 units), the change of 4 600-amp switches for 800 amps to improve the power supplied inside the mine. Two substations inside the mine of 3 MVA of power each were implemented to improve the voltage level for the deepening of the mine, pumping system, ventilation system and the operation of trackless equipment.

Andaychagua's processing plant include grinding circuit consist of primary ball mills #1, 2 (10.5 'x 14', 8 'x 10') and secondary grinding ball mill (7’ x 12’).

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