** Shares of Summit Minerals SUM.AX rise as much as 50% to
A$0.225, their largest-ever intraday jump
** Stock hits highest level since Oct. 7
** Battery mineral explorer executes agreement to buy Mundo
Novo niobium-rare earth elements project in Brazil
** Co has not provided any transactional details regarding
acquisition
** Says project has shown substantial potential for niobium,
rare earth element, and phosphate mineralisation
** More than 2.9 mln shares change hands, 11.7 times the
30-day avg
** Stock up 33.3% YTD, including current session's moves
(Reporting by Nikita Maria Jino in Bengaluru)
((Nikita.Jino@thomsonreuters.com;))