Page last updated at 15:39 GMT, Monday, 4 July 2011 16:39 UK

Japan's rare earth minerals

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China currently produces 97% of the world's rare earth metals. But now Japanese researchers say they have discovered vast deposits of rare earth minerals, used in many hi-tech appliances, in the mud of the Pacific Ocean floor.

It's a discovery that could challenge the Chinese dominance of the market if recovering the new find proves commercially viable.

Dr Anna Armstrong from the journal, Nature Geoscience, joined Mishal Husain in studio to discuss the findings.

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