Rio Tinto has agreed to pay $US6.7 billion ($A9.9 billion) to acquire a global lithium miner as it seeks to broaden its portfolio to include more commodities essential for a low-carbon future.
The company said it would pay a 90 per cent premium to acquire Arcadium Lithium, a dual-listed company formed in January by the merger of Brisbane-based Allkem and US-based Livent.
