** Shares in Australia's Mayur Resources MRL.AX gain 5.6% to A$0.285
** Stock rose as much as 6.5% earlier in the day
** Shares gain after businessman Gerry Harvey emerged as a major investor in the Papua New Guinea focussed firm
** Harvey is founder and chairman of electronics retailer Harvey Norman HVN.AX
** Harvey, through his investment vehicle Velrosso, has amassed a 6.7% stake in Mayur Resources
** Stock down 5.3% this year, as of last close
(Reporting by Rishav Chatterjee in Bengaluru; Editing by Christopher Cushing)
((Rishav.Chatterjee@thomsonreuters.com;))