Lundin, BHP’s Vicuña Project Targets 395,000 Tpy of Copper Concentrate From Argentina

Why It Matters

The Vicuña project could become a major new source of copper and precious metals for global markets, but its economics hinge on treatment‑charge trends and the ability to manage arsenic‑laden concentrate.

Key Takeaways

• Joint venture aims 395k tonnes copper annually
• Stage 1 capex $7.1 billion; total $18.1 billion
• NPV $9.5 billion, IRR 14.8% at $4.60/lb copper
• Arsenic‑rich concentrate requires dedicated roasting plant
• Treatment charges currently negative, pressure on economics

Pulse Analysis

The Vicuña district, straddling Argentina and Chile, represents one of the most ambitious copper‑focused developments in South America. By leveraging Lundin’s exploration expertise and BHP’s capital muscle, the joint venture targets a robust output of 395,000 tonnes of copper concentrate per year, complemented by substantial gold and silver streams. This scale positions Vicuña to feed the growing demand for copper driven by electrification and renewable‑energy infrastructure, while also diversifying supply away from traditional miners in Chile and Peru.

Financially, the project’s preliminary economic assessment projects a $9.5 billion after‑tax NPV and a 14.8% internal rate of return, assuming copper prices of $4.60 per pound. Those assumptions are conservative compared with today’s market, where copper trades above $4.80 per pound and precious metal prices are markedly higher. However, the model incorporates a $70 per tonne treatment‑and‑refining charge, a figure that clashes with the current Fastmarkets TC index, which sits in negative territory. Persistent negative treatment charges could erode margins unless long‑term contracts lock in more favorable terms or smelter capacity constraints lift pricing.

Operationally, the project must contend with high arsenic concentrations in the Filo del Sol concentrate, prompting the design of a dedicated roasting plant capable of processing 1.3 million tonnes annually. This adds complexity and capital cost but also creates a marketable calcine product, potentially offsetting some expense. As the global copper market watches for supply‑side shifts, Vicuña’s success will hinge on securing stable offtake agreements, navigating treatment‑charge volatility, and delivering on its multi‑stage expansion roadmap, all of which could reshape the competitive landscape for base‑metal producers.