** Shares of Lion Rock Minerals LRM.AX rise as much as 28% to A$0.064, their highest level since September 25; stock last up 16%
** Biggest intraday pct since May 12
** Gold and copper explorer receives commitments for a A$8.6 million ($5.60 million) placement from Tronox Holding plc TROX.N
** Issue price of A$0.056 per share represents a premium of 12% to stock's last closing level
** Proceeds will accelerate drilling and resource definition, others for Minta Monazite and Rutile Project in Cameroon
** About 19.2 million shares change hands 3.9 times the 30-day avg
** Stock is up 660.5% YTD, including the session's moves
($1 = 1.5361 Australian dollars)
(Reporting by Anjali Singh in Bengaluru)
((anjali.singh2@thomsonreuters.com;))