** Shares of Castle Minerals CDT.AX rise as much as 23.8%
to A$0.013 - hitting their highest level since Aug. 4
** Stock last up 14.3%, on track for best day since Nov. 28,
2022 if gains hold
** Co says commercial grade graphite successful produced
from concentrates on offshore mine in Ghana
** Adds that samples to be tested for assessment of ability
to be converted to battery anode material
** 4.1 mln shares change hands, 3.7x the 30-day average
volume
** Stock has fallen 50% this year, as of last close
(Reporting by Shivangi Lahiri in Bengaluru)
((Shivangi.Lahiri@thomsonreuters.com;))