** Shares of Pioneer Lithium PLN.AX rise as much as 16.3% to A$0.25, their highest level since January 30; stock last up 9.3%

** Stock posts its biggest intraday pct rise since September 29

** Lithium explorer files an additional staking application of 192 claims at its North Pine project in Idaho, U.S.

** The three new additional areas — Northman, Silver Cliffs, and Big Creek - are highly prospective for antimony, tungsten, and polymetallic mineralisation - co

** About 484,000 shares change hands, 3.7 times the 30-day avg

** Stock up 14.6% YTD, including the session's moves

(Reporting by Anjali Singh in Bengaluru)

((anjali.singh2@thomsonreuters.com;))