Atacocha: a zinc operation in Peru
Atacocha is an underground and open pit mine producing zinc in Peru (part of the Cerro Pasco Complex), Peru, operated by Nexa Resources. The sources report 11.9 thousand tonnes of zinc contained in concentrates for CY2025; the basis is 100% of the mine, as reported by Nexa Resources. In zinc content, whole-operation output for CY2025 is 11,900 tonnes: about 0.1% of world zinc output in 2025 and about 0.8% of Peru's; it is one of 22 operations on this site whose output can be stated in zinc content.
Who owns and operates it?
| Owner | Interest | As of |
|---|---|---|
| Nexa Resources | 83.01% | 31 December 2025 |
How much does it produce?
| Period | Output | Basis | Where in the source |
|---|---|---|---|
| CY2025 | 11.9 thousand tonnes of zinc contained in concentrates | 100% of the mine, as reported by Nexa Resources | printed p.34, Item 4 "Producing mines", Atacocha paragraph: "approximately 11.9 thousand tonnes of zinc contained in concentrates"; Earnings release (Form 6-K) printed p.25, Atacocha table "(100% basis)", row "Production - metal contained - Zinc", column 2025 · Nexa Resources S.A. |
| CY2024 | 10.4 thousand tonnes of zinc contained in concentrates | 100% of the mine, as reported by Nexa Resources | printed p.25, Atacocha table "(100% basis)", row "Production - metal contained - Zinc", column 2024 · Nexa Resources S.A. |
Between CY2024 and CY2025 the reported figure rose by 14.4%, in the same unit and on the same basis.
How the zinc-content figure is worked out. Nexa Resources prints 11.9 thousand tonnes of zinc contained in concentrates produced by the Atacocha mine in 2025, and its earnings release labels the mine table "100% basis". The figure covers the whole mine. World mine production of zinc in 2025 was 13,000,000 tonnes (USGS Mineral Commodity Summaries 2026); Peru produced 1,500,000 tonnes.
Status: operating, as of 31 December 2025.
- The 20-F says activities at the Atacocha underground mine have been suspended since 2020 and placed under care and maintenance until the Cerro Pasco Integration Project is concluded and the rehabilitation milestone is achieved; the mine produced zinc in 2025.
How does it compare?
Other zinc operations on this site: Red Dog, Antamina (zinc), Mount Isa (zinc), McArthur River (zinc), Rampura Agucha, Sindesar Khurd, Zawar mines, Rajpura Dariba, Kayad, Garpenberg, Tara, Neves-Corvo (Somincor). In Peru: Antamina (zinc), Cerro Lindo, El Porvenir. See where zinc comes from for the country totals, the country page for Peru, and Nexa Resources for its other operations here.
Sources
- Nexa Resources S.A.: Annual Report on Form 20-F for the fiscal year ended December 31, 2025 (annual report (SEC 20-F), CY2025). Opened 4 November 2026; used: printed pp.34-35 (Item 4, Producing mines); cover and definitions.
- Nexa Resources S.A.: Earnings Release 4Q25 and FY2025 (Form 6-K Exhibit 99.1, 26 February 2026) (results release (SEC 6-K exhibit), CY2025 and CY2024). Opened 4 November 2026; used: printed pp.22, 23, 25, 26, 27 (mine tables, "100% basis").
- U.S. Geological Survey: Mineral Commodity Summaries 2026: Zinc (government statistical summary, 2025 (world and country mine production)). Opened 3 November 2026; used: world and country mine production table.
Method and limits
- Reported, not estimated. Output is the figure the operator or owner published, in the unit it used. This site does not estimate output where none is published.
- Shares. A share divides output in zinc content by the USGS world or country total for 2025. Where the operator's year is a fiscal year or the unit is a concentrate or a carbonate equivalent, the share is approximate or not given.
- Whole operation or owner's share. The basis column says which. A joint venture's output is never counted twice.
- Partial list. Only operations with a published figure are listed, so the rank is among those on this site, not among every zinc mine. Shares of a country's output mix periods and bases, so treat them as indicative.
- Made with AI assistance, checked against sources. The facts were gathered from the documents above by AI-assisted research and re-checked against those documents by a second, independent pass; the page text is generated from the data. No professional review took place. How the site is made. To report an error, contact us; fixes are logged on the corrections page.