** Shares of technology metals co Pinnacle Minerals PIM.AX
rise as much as 42.9% to A$0.150, their highest since Sept. 28
** Stock marks its biggest ever intraday pct gain
** Co says rock chips with elevated rare earth oxides were
found during recently completed drilling campaign at Tambellup
East prospect in Western Australia
** About 1.4 mln shares change hands, nearly 16 times the
30-day average
** Stock unchanged this year, as of last close
(Reporting by Himanshi Akhand in Bengaluru)
((Himanshi.Akhand@thomsonreuters.com;))