Australia's Stelar Metals rise on copper find

** Shares of Stelar Metals SSLB rise as much as 11.8% to A$0.085, their highest level since Sept. 5

** Lithium miner says high-grade copper assays received from initial rock chip sampling at Lone Pine Prospect at Baratta

** Adds, more detailed mapping and sampling will be undertaken at Lone Pine

** Stock has fallen 72.4% YTD, as of last close