Corrects spelling of Macquarie in third bullet
** Greatland Resources GGP.AX falls as much as 4.81% to A$7.920; marks biggest intraday pct decline since November 26
** Co's Havieron project study blueprint flags 17-year life, with steady annual output of 266,000 ounces at A$1,610 per ounce all-in sustaining cost (AISC)
** Macquarie says project's standalone study trails on steady-state production but tops on AISC, quicker ramp-up timing to steady state
** Adds further upside may emerge as co probes Telfer gold-copper mine extensions and looks to integrate project
** Stock climbs 12.3% since listing in June
(Reporting by Kumar Tanishk in Bengaluru)
((Tanishk.Kumar@thomsonreuters.com; X: @thatstanishk http://www.x.com/thatstanishk;))