** Shares of St George Mining SGQ.AX rise as much as 14% to A$0.057, their highest level since early April 2023
** Critical minerals developer finds high-grade rare earths and niobium mineralisation at its Araxá Project in Minas Gerais, Brazil
** About 33.8 mln shares traded, 2.2x the 30-day average
** YTD stock up ~108%, including current session's move
(Reporting by Ananya Verma in Bengaluru)
((ananya.verma@thomsonreuters.com))