• Shares of Australia's Tivan rise as much as 12.4% to A$0.363, their biggest intraday pct gain since March 10

• Stock touches highest level since March 13

• Critical minerals explorer finds copper-gold reserves across multiple sites at its Baucau and Ossu projects in Timor-Leste

• Stock up 13.1% so far this week, set for its best week since early-Feb

• Stock up 25.5% YTD, including day's moves

(Reporting by Aamir Sheik Khalid in Bengaluru)