** Shares of Zenith Minerals ZNC.AX rise as much as 24% to A$0.13, their highest level since January 29, 2024
** Mineral explorer receives firm commitments from Perth-based investment co Ida Metals Investments for A$7.65 million ($5.04 million) placement
** Issue price of A$0.1275 per share represents a premium of 2% to stock's last close
** About 4.3 mln shares change hands, 2.3 times the 30-day avg
** Stock has more than tripled in value so far this year
($1 = 1.5177 Australian dollars)
(Reporting by Anjali Singh in Bengaluru)
((anjali.singh2@thomsonreuters.com;))