** Canada-based gold miner’s U.S.-listed shares up 58.3 pct at C$2.28
** Idaho-based Hecla Mining Co offers to acquire Klondex for $462 mln in a cash and stock deal
** Offer of C$2.47 per Klondex share represents a 71.5 pct premium to KLDX’s close on Friday on the NYSE
** Deal includes Fire Creek, Midas and Hollister mines in Nevada; Klondex’s Canadian assets to be spun out to its existing shareholders as Klondex Canada
** Klondex stock has fallen 70 pct in the past 12 months (Reporting by Karan Nagarkatti)
