Peruvian rare earth discovery richer than initially thought

[caption id="attachment_815580" align="aligncenter" width="600"] Rare earth concentration area #1 at RioSol's rare earth project.[/caption] U.S.-based rare earth explorers RioSol and its Peruvian mining arm Compañia Minera Rio Sol, which announced last month a significant rare earth element and poly-metallic claim discovery,...