- Today’s lithium supply is split between brine operations (mostly South America) and hard rock spodumene mining (mostly Australia and now China).
- Battery recycling is a small but growing source.
- Each route has different capital cost, operating cost, environmental footprint, and lead time.
What are the three lithium supply routes?
Lithium reaches the market through brine evaporation (in the Lithium Triangle of Chile, Argentina, and Bolivia), hard rock spodumene mining (primarily in Western Australia and now China and Canada), and battery recycling. Each route has a different cost structure, environmental footprint, and time to market.
Brine operations
Brine operations pump lithium-bearing salt water from underground reservoirs into large evaporation ponds. The process takes months and depends on solar and wind energy. Cost per tonne is generally low once a brine field is in production, but new projects require very long permitting and construction timelines and large land footprints.
Hard rock spodumene
Spodumene is a lithium-bearing mineral mined from hard rock, then concentrated and converted to lithium hydroxide or carbonate at a separate chemical plant (often in China). Hard rock projects can be built faster than brines and respond more quickly to price signals, but unit operating costs are typically higher.
Battery recycling
End-of-life batteries are an emerging source of lithium and other battery metals. Today recycling supplies a small share of demand because there are not yet enough end-of-life batteries to recycle. Over time recycling becomes more important as the installed EV base ages.
Implications for investors
Different supply routes have different risk profiles. Brine projects are typically slow, capital-intensive, and exposed to local water and permitting politics. Hard rock projects are more responsive but higher cost. Recycling is small now but a meaningful long-term source. Diversified exposure across routes spreads route-specific risk.
| Route | Typical geography | Capital intensity | Time to first production |
|---|---|---|---|
| Brine | Chile, Argentina, Bolivia | High | Many years |
| Hard rock (spodumene) | Australia, China, Canada | Moderate to high | Several years |
| Recycling | OECD | Moderate | Limited by EOL battery availability |
Public-domain summaries from the US Geological Survey, Natural Resources Canada, and the International Energy Agency.
Frequently asked questions
Public-domain summaries from the US Geological Survey, Natural Resources Canada, and the International Energy Agency.
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