** Shares of New Frontier Minerals NFM.AX rise 7.7% to A$0.014
** Stock marks their largest intraday pct gain since May 1
** The diversified miner reports significant heavy rare-earths element enrichment including niobium and tantalum at its Harts Range project in Northern Territory
** Co says sampling results also highlight presence of dysprosium and terbium, which are magnet rare earth elements
** More than 838,00 shares change hands vs 30-day avg volume of around 797,000 shares
** Stock down 22.2% YTD, including current session's moves
(inReporting by Nikita Maria Jino in Bengaluru)
((Nikita.Jino@thomsonreuters.com;))