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What makes a mineral 'critical'?

Radio National Breakfast

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Rare earth minerals have been at the centre of politics this week, with the US and Australia signing a critical minerals framework accounting for billions of dollars worth of investment.

And a key part of that agreement is the development of a gallium refinery in Western Australia.

But what are gallium and antimony? And why are they in demand?

  • Guest: Dr Chris Vernon, Critical Minerals Lead at CSIRO
  • Producer: Rob Kelly
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