** Shares of Petratherm PTR.AX more than double to A$0.19,
gaining the most since September 2012
** Copper and gold explorer set for best trading session
since April 2018, if gains hold
** Explorer says drilling results from Comet Project Area in
South Australia have identified rare earth (REE) mineralised
clay intersections urn:newsml:reuters.com:*:nASX8gcQ9H
** Analysis of REE shows recognition of anomalous light REE
(cerium and lanthanum)
** 32.2 mln shares have changed hands, compared with the
30-day average of 234,136 shares
** Stock is up 47.7% so far this year, as of last close
(Reporting by Navya Mittal in Bengaluru)
((navya.mittal@thomsonreuters.com))