** Shares of Australia's Peak Rare Earths PEK.AX rise as
much as 67.6% to A$0.31, marking their biggest intraday pct gain
since September 2010
** Stock hits its highest level since Jan. 18
** Rare-earth minerals co confirms extensive high-grade,
thick intercepts of fluorspar across Breccia zone in Ngualla
project, Tanzania
** Fluorspar used directly or indirectly to manufacture
products like aluminium, gasoline and steel, among others
** Says high-grade rare earth mineralisation and elevated
levels of niobium are also intercepted within Breccia zone
** About 1.6 mln shares change hands by 0050 GMT, vs the
30-day average volume of 357,600 shares
** Stock down 47.1% YTD, as of last close
(Reporting by Roshan Thomas in Bengaluru)
((Roshan.Thomas@thomsonreuters.com))