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Highlights
- Rio Tinto announces a US$900M lithium joint venture in Chile
- Significant investment planned toward long-term lithium production
- Move boosts exposure to critical minerals for energy transition
The mining giant Rio Tinto (ASX:RIO) has taken a significant step in expanding its footprint in the critical minerals space, with a newly announced lithium joint venture in Chile. The news has sparked renewed attention toward the stock, with a modest uplift of 0.7% in its share price following the announcement.
This new development reinforces Rio Tinto’s push to diversify beyond its core commodities, such as iron ore and copper, into lithium—a mineral pivotal to the global energy transition.
A Strategic Lithium Move in Chile
Rio Tinto has entered a binding agreement with Chile’s state-owned Codelco to develop the high-grade lithium project located in Salar de Maricunga, a salt flat in Chile’s Atacama region. This site is considered one of the most promising lithium resources globally due to its rich lithium brine content and scalable potential.
As part of the deal, Rio Tinto will acquire a 49.99% interest in Salar de Maricunga SpA, which holds the mining rights in the area. This ownership will be secured through staged investments totaling up to US$900 million.
The initial US$350 million will fund advanced feasibility studies and technical assessments. A further US$500 million will be allocated toward construction if the final investment decision is positive. Additionally, another US$50 million will be committed if the joint venture delivers first lithium production by 2030.
A Long-Term Bet on Clean Energy Resources
This partnership not only adds to Rio Tinto’s long-term growth prospects but also supports its ambition to become a key player in the green energy supply chain. Lithium, being essential for batteries used in electric vehicles and energy storage, is expected to remain in strong demand over the coming decades.
This development also reflects broader trends within the S&P/ASX200, where companies are adapting to the global push toward decarbonisation and sustainable resource management.
As Rio Tinto progresses with this strategic investment, market observers will be watching for further updates, especially as the project advances toward key milestones and regulatory approvals, anticipated by the first quarter of 2026.
Another miner to watch in the sector includes BHP Group (ASX:BHP), which is also active in critical minerals, though currently more concentrated in copper and Australian assets compared to Rio Tinto’s global diversification.
