** Shares of Castle Minerals Ltd CDT.AX rise as much as
9.5% to A$0.023, biggest intraday pct gain since Jan. 11
** Mining co says soil sampling completed at Woodcutters
Lithium Project in Western Australia validating presence of
lithium-bearing pegmatites
** Adds lab results are expected by late April
** Says follow up drilling test will take place if results
are positive
** More than 1.7 mln shares change hands, vs 30-day average
volume of 1.3 mln shares
** Stock has been flat this year, as of last close
(Reporting By Udbhav Krishna P in Bengaluru)
((UdbhavKrishna.P@Thomsonreuters.com))