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Lithium Triangle (Argentina, Bolivia, Chile)
· Resource or chokepoint
FactTreaties, membership, measured data, events.
The high Andean salt flats of Argentina, Bolivia and Chile, which hold roughly half the world's known lithium resources.
See it on the Geopolitics map →The picture
Lithium, the key metal in electric-vehicle and grid batteries, is pumped here as brine from salt flats (salares) and concentrated in evaporation ponds. Chile is the second-largest producer after Australia; Argentina's output is rising fast; Bolivia, tied with Argentina for the largest resources, barely produces after years of state control and stalled deals. Chinese, Western and state firms compete for access. Lithium prices fell about 80% from their 2022 peak, delaying projects. Investing: miners such as SQM and Albemarle, or lithium and battery ETFs.
Why it matters
Because China refines most of the world's lithium, the US and its allies court the Triangle for supply, while Chinese firms already own major stakes there.
Key facts and numbers
USGS Mineral Commodity Summaries give resources (Bolivia and Argentina about 23 million tonnes each, Chile 11 million) and output; prices from trackers such as Benchmark and Fastmarkets.
What to watch
Outlook: whether brine output can grow without draining scarce Andean water, and whether newer direct lithium extraction technology works at scale.
Connections (2)
▸Lithium Triangle (Argentina, Bolivia, Chile) is part of Critical minerals and rare earthsFact
The relationship
Lithium is a key battery mineral on US, EU and Chinese critical lists. The Triangle holds about half the world's known resources, mostly as brine, while Australia mines more, from hard rock. But much Andean lithium ships to China to be processed into battery materials, so owning mines alone does not break China's grip on the supply chain.
Since when and why
Salt flats in the high Andes, such as Chile's Atacama, Argentina's Hombre Muerto and Bolivia's Uyuni.
How we know
USGS resource and production estimates, and Chilean and Argentine customs data showing China as the main buyer of their lithium.
What to watch
Whether new Western-backed refineries and US or EU trade deals redirect Andean lithium, and how water and indigenous concerns limit expansion.
▸Argentina forms one corner of the Lithium Triangle (Argentina, Bolivia, Chile)Fact
The relationship
Argentina holds about 23 million tonnes of lithium resources and, unlike Bolivia, welcomes foreign miners. Provinces own the minerals, and Milei's 2024 RIGI law offered 30 years of tax and currency guarantees for big projects, drawing Rio Tinto, Chinese firms and others to Catamarca, Salta and Jujuy.
Since when and why
The high puna plateau of northwest Argentina; output, under way since the late 1990s, surged as several new plants opened in 2023–25.
How we know
USGS resource estimates, Argentine mining secretariat data and company filings showing new projects and rising exports.
What to watch
Whether Argentina can overtake Chile as a producer, and how indigenous communities' water and consent concerns are resolved, remain open.