** Shares of Gateway Mining GML.AX rise as much as 34.8%
to A$0.031, their highest since June 13
** Stock posts its biggest intraday pct gain since June 5
** Mineral explorer says it will sell gold rights for
Eastern Montague project in Western Australia to Brightstar
Resources BTR.AX for A$14 mln ($9.16 mln)
** Says co will receive A$5 mln in cash, A$7 mln in
Brightstar shares and A$2 mln in deferred BTR shares
** Brightstar shares on trading halt on Thursday
** About 1.9 mln GML shares change hands, compared with the
30-day average volume of 423,808
** GML stock down 8% this year, as of last close
($1 = 1.5281 Australian dollars)
(Reporting by Sneha Kumar in Bengaluru)
((Sneha.Kumar@thomsonreuters.com;))