** Great Southern Mining GSN.AX slips as much as 18.2% to A$0.027; marks biggest intraday pct drop since November 13, 2023
** Stock touches lowest since December 2, 2025
** Gold explorer raises A$4.6 mln ($3.3 mln) via placement
** Offer price of A$0.028/share represents 15.2% discount to last close
** Co says placement funds will be used to accelerate drilling programmes and gold target drilling at its Duketon gold project, Australia
** Stock down 20% so far this week, set for its worst week in three years
** YTD, GSN down 30%
($1 = A$1.4126)
(Reporting by Aamir Sheik Khalid in Bengaluru)
((Aamir.SheikKhalid@thomsonreuters.com))