London, 24 March 2011: Reuters

China's exports of rare earth metals burst through the $100,000-per-tonne mark for the first time in February, up almost ninefold from a year before, while the volume of trade stayed far below historical averages.

China's squeeze on rare earths, which are used in a wide range of hardware including precision-guided weapons, hybrid car batteries and iPads, has forced prices up dramatically since July last year, when each tonne fetched a mere $14,405 on average.

The apparent price rises have averaged $10,000 per tonne per month but accelerated in February, galloping ahead by $34,000 per tonne, according to Reuters calculations based on data from China's Customs office.

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