Overview
Stage | Production |
Mine Type | Stockpile |
Commodities |
|
Mining Method |
|
Production Start | ...  |
Mine Life | 2028 |
Cerro de Pasco Operation comprises polymetallic stockpiles and San Expedito and Paragsha concentration plants. |
Source:
p. 13,15
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.
Empresa Administradora Cerro S.A.C. is subsidiary of Volcan Compañía Minera S.A.A. processes stockpiles in mining unit Cerro since mining operations have stopped.
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
- Carbonate replacement
- Vein / narrow vein
- Epithermal
Summary:
The Cerro de Pasco deposit is a complex epithermal polymetallic deposit with base and precious metal mineralization, mainly silver, characterized by vein, breccia-hosted, and carbonate-replacement mineralization. This deposit type has also been referred to as a “Cordilleran base- metal deposit” type (Baumgartner et al., 2008). The term “Cordilleran” was first applied to base metal-rich polymetallic vein deposits (Sawkins, 1972; Einaudi, 1982; Guilbert and Park, 1985; Bartos, 1987; Fontboté and Bendezú, 2009; Catchpole et al., 2015). Cordilleran deposits have also been referred to as Butte-type vein deposits (Meyer et al., 1968), polymetallic veins, and zoned base metal veins (Einaudi et al., 2003). Because the mineralization in many districts is dominantly mantos and not veins, and they commonly contain gold and silverin addition to base metals, Bendezú et al. (2008) and Fontboté and Bendezú (2009) prefer the more general term Cordilleran polymetallic deposits.
Rottier et al. (2018b) describe three successive mineralization stages at Cerro de Pasco resulting in epithermal low- to high-sulphidation mineral associations emplaced at a paleodepth from <500 m to 1,500 m in the shallow part of a porphyry system:
1) Pyrrhotite pipes grading outward to sphalerite and galena replacement bodies (Stage A).
2) Quartz-pyrite veins (Stage B1) and a funnel-shaped massive replacement body of pyrite-quartz (Stage B2) with quartz-sericite ± kaolinite alteration.
Summary:
(Translated from Spanish by Google Translate)
The Cerro de Pasco Unit comprises two underground mines (Vinchos and Paragsha) and an open pit (Raúl Rojas). Between 2012 and 2014, the open pit and underground mining operations were phased out, and processing shifted towards the treatment of old stockpiles, which continues to this day.
Vinchos Mine (beginning of Operation 1975).
Vinchos mine is in under closure process since 2016.
Paragsha underground mine (beginning of Operation 1902).
The Paragsha mine has been temporary suspended since 2016. The infrastructure for the pumping system remains operational and in good condition.
Raúl Rojas open pit mine (beginning of Operation 1956).
The Raul Rojas mine has been temporary suspended since December 2015.
Since 2016, processing of marginal ore from the stockpiles mined at the Raul Rojas open pit in previous years has begun.
Marginal ore stockpiled from the Raúl Rojas open pit mine is treated at the Paragsha-San Expedito mine.
Source:

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Source:
Summary:

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Production:
Increased daily processing capacity to 8,700 tpd from October 2022.
Commodity | Product | Units | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 |
Zinc
|
Metal in concentrate
|
kt
| ......  | ......  | ......  | ......  | 11 | 9.3 | 2.3 |
Zinc
|
Concentrate
|
kt
| ......  | ......  | ......  | ......  | 26 | 22 | 6 |
Lead
|
Metal in concentrate
|
kt
| ......  | ......  | ......  | ......  | ......  | ......  | ......  |
Lead
|
Concentrate
|
kt
| ......  | ......  | ......  | ......  | ......  | ......  | ......  |
Silver
|
Metal in concentrate
|
M oz
| ......  | ......  | ......  | ......  | ......  | ......  | ......  |
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Operational Metrics:
Metrics | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 |
Daily processing capacity
| ......  | ......  | 7,000 t | | | 6,000 t |
Ore tonnes mined
| ......  | ......  | 1,824 kt | 2,073 kt | 1,314 kt | 1,059 kt |
Tonnes processed
| ......  | ......  | 1,824 kt | 2,073 kt | 1,314 kt | 1,059 kt |
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Reserves at December 31, 2022:
Category | Tonnage | Commodity | Grade | Contained Metal |
Probable
|
9.9 Mt
|
Zinc
|
1.8 %
|
173 kt
|
Probable
|
9.9 Mt
|
Lead
|
0.7 %
|
69 kt
|
Probable
|
9.9 Mt
|
Copper
|
0.1 %
|
8 kt
|
Probable
|
9.9 Mt
|
Silver
|
1.7 oz/t
|
17 M oz
|
Total Resource
|
89.8 Mt
|
Zinc
|
3.8 %
|
3,425 kt
|
Total Resource
|
89.8 Mt
|
Lead
|
1.5 %
|
1,309 kt
|
Total Resource
|
89.8 Mt
|
Copper
|
0.2 %
|
|
Total Resource
|
89.8 Mt
|
Silver
|
3.2 oz/t
|
286 M oz
|
Corporate Filings & Presentations:
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