** Shares of Ukraine-focused miner Ferrexpo FXPO.L climb almost 24% to 71.4p
** If gains hold, stock set for biggest one-day jump since early-Nov 2024
** The U.S. and Ukraine were set to continue work on Monday on a plan to end the war with Russia after agreeing to modify an earlier proposal
** Peel Hunt analyst Peter Jones-Mallin says FXPO's jump is "entirely due to the potential for a peace deal"
**Including session moves, stock has fallen nearly 32% YTD
(Reporting by Akshaya V)
((akshayav@thomsonreuters.com))