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Peru

Cerro De Pasco - Oxidos

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Summary

Mine TypeOpen Pit
StatusActive
Commodities
  • Zinc
  • Lead
  • Copper
  • Silver
  • Gold
Mining Method
  • Truck & Shovel / Loader
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SnapshotThe Cerro De Pasco-Oxidos Unit is engaged in the mining and treatment of oxidized minerals and comprises in-situ oxides in the southern sector of the Raúl Rojas pit (known as the Santa Rosa pit), oxide and pyrite stockpiles, as well as the oxide leaching plant.

Owners

SourceSource
CompanyInterestOwnership
Volcan Compania Minera S.A.A. 100 % Indirect
Empresa Administradora Cerro S.A.C. (operator) 100 % Direct
Óxidos de Pasco S.A.C. is engaged in the mining and treatment of oxidized minerals in the Cerro De Pasco-Oxidos Unit.

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.

Deposit type

  • Breccia pipe / Stockwork
  • Vein / narrow vein

Summary:

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.

Reserves

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Mining Methods

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Heavy Mobile Equipment

Fleet data has not been reported.

Comminution

Crushers and Mills

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Processing

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Commodity Production

CommodityUnits2024202320222021202020192018201720162015
Silver M oz  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe3.33.43.74.13.6
Gold oz  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe15,3804,1102,8503,2725,312
All production numbers are expressed as metal in doré.

Operational metrics

Metrics2024202320222021202020192018201720162015
Daily processing rate  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe2,558 t2,500 t2,500 t2,500 t
Ore tonnes mined  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe911 kt914 kt872 kt900 kt743 kt
Tonnes processed  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe911 kt914 kt872 kt900 kt743 kt
Daily processing capacity  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe2,500 t

Production Costs

Commodity production costs have not been reported.

Operating Costs

Currency202420232022202120202019201820172016
Processing costs ($/t milled) USD  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe
Total operating costs ($/t milled) USD  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe

Mine Financials

Units20242023202220212020201920182017
Capital expenditures M USD  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe 6   7.1   3.3  
Revenue M USD  ....  Subscribe  ....  Subscribe  ....  Subscribe 78   56  
Gross profit M USD  ....  Subscribe  ....  Subscribe  ....  Subscribe 11.9   7.8  
Operating Income M USD  ....  Subscribe  ....  Subscribe  ....  Subscribe 10.8   24  
Pre-tax Income M USD  ....  Subscribe  ....  Subscribe
After-tax Income M USD  ....  Subscribe  ....  Subscribe  ....  Subscribe -10.3   10.3  

Personnel

Mine Management

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Apr 11, 2025
....................... Subscription required ....................... Subscription required Subscription required Apr 14, 2025
....................... Subscription required ....................... Subscription required Subscription required Apr 11, 2025

Workforce

EmployeesYear
...... Subscription required 2022
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Aerial view:

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