** Shares of Vertex Minerals Ltd VTX.AX rise as much as
15.4% to A$0.150, biggest intraday pct gain since Oct. 23
** Co says it will undertake lithium soils survey across its
Lake Johnston Project in Western Australia
** Adds it has lodged an exploration license application
over additional tenure in the Lake Johnston area
** About 153,185 shares change hands, vs the 30-day average
volume of ~51,345 shares
** Stock up ~17% this year as of last close
(Reporting by Megha Rani in Bengaluru)
((Megha.Rani2@thomsonreuters.com;))