** Shares of mineral explorer Galileo Mining Ltd GAL.AX
climb as much as 57.4% to A$0.850 - set for best day since May
2022, if gains hold
** GAL stock hits its highest since Feb. 10
** Co says step-out drilling found thick sulphide zone at
Callisto discovery within its Norseman project in Western
Australia
** Says it recorded widest drill intersection to date with
72 metres of copper-nickel mineralisation
** Adds co is fully funded to implement all planned drilling
programmes, with no requirement to raise short-term capital
** Stock top gainer on ASX All Ordinaries index .AORD
** Trading volumes 6 times the 30-day average of 224,658
shares
** As of last close, stock down 37% this year
(Reporting by Himanshi Akhand in Bengaluru)
((Himanshi.Akhand@thomsonreuters.com;))