Jan 25 (Reuters) - Silver Lake Resources Ltd SLR.AX :
* QUARTERLY GROUP PRODUCTION WAS 57,566 OUNCES GOLD AND 410 TONNES COPPER
* FY21 GROUP GOLD SALES GUIDANCE IS MAINTAINED AT 240,000 TO 250,000 OUNCES GOLD
* FY21 COPPER SALES GUIDANCE UPGRADED TO 1,600 TONNES