** Shares of Poseidon Nickel Ltd POS.AX rise as much as
22.3% to A$0.115, marking their biggest intraday pct gain since
July 26
** Nickel explorer said drilling at its Tundra-Mute zone of
Silver Swan Channel in Western Australia intersected massive
nickel-copper sulphides urn:newsml:reuters.com:*:nASXbb62RT
** Stock hits highest since Oct. 20
** Over 22.8 mln shares change hands, vs 30-day average
volume of ~9.4 mln
** Stock up 44.6% YTD, as of last close
(Reporting by Arundhati Dutta in Bengaluru)
((Arundhati.Dutta@thomsonreuters.com;))