BUZZ — Australia's Valiant Gold jumps after gold mine production update

* Shares of Australia's Valiant Gold rise as much as 4% to A$0.26, their biggest intraday pct gain since Oct 6 * Copper explorer updates on its flagship Comet Gold Mine in Western Australia’s Murchison region * Says first production targeted for H227 * YTD, stock down below 13% (Reporting by Aamir Sheik Khalid in Bengaluru) ((Aamir.SheikKhalid@thomsonreuters.com)