** Shares of Group 6 Metals G6M.AX rise as much as 28.6%
to A$0.036, their highest since Dec. 22, 2023
** Stock posts its biggest intraday pct gain since May 29
** Resources explorer and developer says high-grade ore now
exposed in open cut pit at the Dolphin Tungsten Mine in Tasmania
** Says high-grade ore blocks will be mined from June
onwards
** Adds tungsten market strengthens on strategic supply
concerns
** About 4.2 mln shares change hands, compared with the
30-day average volume of 883,899
** Stock down 65.4% this year, as of last close
(Reporting by Sneha Kumar in Bengaluru)
((Sneha.Kumar@thomsonreuters.com;))