** Shares of Southern Hemisphere Mining SUH.AX surge 42.9% to A$0.030
** Stock set for its best session since February 25, 2021
** Minerals explorer identifies a potential copper-gold porphyry at the Curiosity Copper Target in Chile
** Stock rose as much as 66.7% to A$0.035 earlier in the day, its highest level since February 17
** About 18.3 mln shares traded in stock's busiest session since February 3, 2023
(Reporting by Manasi Dasa in Bengaluru)
((Manasi.DasaSundeep@thomsonreuters.com;))