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Location: 172 km NE from Lima, Peru
Av. Manuel Olguín 373, Santiago de SurcoLimaPeru
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Mining scale, mining and mill throughput capaciites.Full profiles of select mines and projects.
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The General Shareholders' Meeting of Empresa Administradora Cerro S.A.C. approved the merger with Óxidos de Pasco S.A.C. on September 29, 2023. The merger became effective on October 1, 2023.
Empresa Administradora Cerro S.A.C., a wholly-owned subsidiary Volcan Compañía Minera S.A.A.
In May 2024, Glencore disposed of its 23.3% interest in Volcan Companja Minera S.A.A. to Transition Metals AG, a subsidiary of Integra Capital.
Historically, the Cerro de Pasco deposit had a supergene oxide cap. The only remaining area of the deposit with oxide mineralization is in the Santa Rosa open pit area. In the Santa Rosa area in the southern part of the open pit, there is a remnant of the Mitu Group (oxidized siltstones and conglomerate) cut by phreatic and hydrothermal breccias. More recent mapping and sampling during mining identified the host rock as Mitu Group interbedded sandstone and conglomerate, cut by C2 veins resulting in massive and disseminated mineralization. Supergene oxidation generated the mined zone of silver-gold oxide mineralization which is 800 m long (and open to southeast), 400 m wide, and 125 m deep.In 2022, the integral geological model of the In-Situ Oxides (OIS), located in the southern sector of the Raúl Rojas pit (known as the Santa Rosa pit) was updated, characterizing three domains of gold and silver mineralization, called: (i) volcanic protolith hydrothermal breccia (BxH-v), sedimentary protolith hydrothermal breccia (BxH-s) and pyrite IV (at the base of the In Situ Oxide deposit with high silver values).In 2023, a diamond drilling campaign was conducted, and geological and geochemical information from geomechanical drill holes was reused. This allowed for the updating of the geological model and the increase of economic mineral resources in the Cleopatra sector, southeast of the Santa Rosa Pit.In 2024, a diamond drilling campaign was conducted in the northern area of the Raúl Rojas pit, in the sector known as Chasqui Norte, which allowed for the delineation of economic mineralization with high grades of copper, gold, and silver, as well as the updating of the geological model to increase economic mineral resources in the future.
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