** Shares of Australia's Future Battery Minerals FBM.AX rise as much as 9.8% to A$0.045, its biggest intraday pct gain since October 16
** Mineral explorer says assays from its Miriam project in Western Australia hint towards high-grade gold finds
** Near 2 mln shares change hands, 1.2x the 30-day average volume
** Stock has risen 138.9% this year, including session gains
(Reporting by Roshan Thomas in Bengaluru)
((Roshan.Thomas@thomsonreuters.com;))