GOL/ Chalice Mining CHN.AX was the top gainer, adding 7.5% to hit a record high, while sector heavyweights Northern Star Resources NST.AX and Newcrest Mining NCM.AX advanced 2.7% and 1.4%, respectively. By Tejaswi Marthi May 26 (Reuters) - Australian stocks snapped a four-day winning streak on Wednesday as heavyweight miners tracked a downturn in iron ore prices and offset gains in gold stocks, while investors remained cautious ahead of U.S. inflation data later this week. The metals and mining index .AXMM shed 1.4%, as iron ore prices slumped.