** Shares of ABx Group ABX.AX rise as much as 26.3% to A$0.12, their biggest intra-day pct gain since October 13
** Rare-earths explorer says over 98% of total rare earth elements retained with removal of major impurities from its Deep Leads project in Tasmania
** The company produced a mixed rare earth carbonate product from the same project, with high rare earth concentration
** Stock nearly tripled YTD, including the current session's move
(Reporting by Ananya Verma in Bengaluru)
((ananya.verma@thomsonreuters.com;))