** Shares of Power Minerals rise as much as 11.1% to A$0.11; their largest intraday pct gain since Sept. 27

** Diversified miner reports mineralisation of high-grade niobium, tantalum and rare earth elements $(REE)$ from its Tantalo project in Brazil

** Says sampling results provide confidence in project's exploration potential

** Stock hits highest since Oct. 11

** PNN down 50% YTD

(Reporting by Nikita Maria Jino in Bengaluru)

((Nikita.Jino@thomsonreuters.com;))