Overview
Stage | Production |
Mine Type | Stockpile |
Commodities |
|
Mining Method |
|
Production Start | ... |
Mine Life | 2023 |
The Oxidos de Pasco Unit is now engaged in the treatment of oxidized minerals in mining unit of Oxidos, which comprises oxide stockpiles, in-situ oxides in the southern sector of the Raúl Rojas pit (known as the Santa Rosa pit), pyrite stockpiles and the Óxidos leach pad. |
Source:
p. 13,14
Volcan Compañía Minera S.A.A. is a subsidiary of Glencore AG, which is a subsidiary of Glencore Plc., owner of 63% of common class A voting shares and an economic interest of 23%, excluding treasury shares.
Óxidos de Pasco S.A.C. is a wholly-owned subsidiary Volcan Compañía Minera S.A.A., which is currently engaged in the treatment of oxidized minerals at a leach pad.
In Q4 2022, Glencore commenced a process exploring the possible disposal of its 23.3% economic interest in Volcan.
Contractors
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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 In Situ Oxides 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).
Summary:
In Oxidos de Pasco unit mineral resources are contained in oxides stockpiles and in-situ oxides located in the southern sector of the Raúl Rojas pit (known as the Santa Rosa pit).
Mining of in-situ oxide in the Santa Rosa open pit started in 2019. The extraction of in situ mineral has a low stripping ratio and its extraction does not present any operational problems.
Source:
Summary:
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Reserves at December 31, 2022:
Mineral Resources are reported inclusive of Mineral Reserves.
Category | Tonnage | Commodity | Grade | Contained Metal |
Probable
|
0.7 Mt
|
Silver
|
6.8 oz/t
|
5 M oz
|
Measured & Indicated
|
2.1 Mt
|
Zinc
|
0.1 %
|
|
Measured & Indicated
|
2.1 Mt
|
Lead
|
0.2 %
|
|
Measured & Indicated
|
2.1 Mt
|
Silver
|
4.6 oz/t
|
|
Inferred
|
0.2 Mt
|
Zinc
|
0.1 %
|
|
Inferred
|
0.2 Mt
|
Lead
|
0.2 %
|
|
Inferred
|
0.2 Mt
|
Copper
|
0.1 %
|
|
Inferred
|
0.2 Mt
|
Silver
|
5.3 oz/t
|
|
Corporate Filings & Presentations:
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