Peruvian discovery may hold ‘hidden pool’ of rare earths

[caption id="attachment_824938" align="aligncenter" width="600"] View up the valley at Capacsaya from the south at RioSol's rare earth project.[/caption] U.S.-based rare earth explorer RioSol and its Peruvian mining arm Compañía Minera Rio Sol said Tuesday studies carried out at its recently unveiled rare...

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