** Shares of Sunshine Metals SHN.AX rise as much as 20% to A$0.024, their biggest intraday gain since September 3
** Gold and copper explorer finds shallow, high-grade gold at Ravenswood Consolidated project in Queensland
** About 21.9 mln shares traded, 1.5x the 30-day average
** YTD stock up 187.5%, including current session's move
(Reporting by Ananya Verma in Bengaluru)
((ananya.verma@thomsonreuters.com;))