** Shares of Australian lithium miners slump as market doubts minerals deal between the U.S. and Ukraine
** U.S. President Donald Trump has been seeking a minerals deal with Ukraine - home to a trove of lithium deposits and rare earth minerals
** A heated meeting between Trump and Ukrainian President Volodymyr Zelenskiy at the White House on February 28 cast doubt on the potential agreement
** Mineral Resources MIN.AX loses most, down 7.8%
** Pilbara Minerals PLS.AX and Liontown Resources LTR.AX drop 2.8% and 2.3% respectively
** IGO IGO.AX trading 3.7% in the red
(Reporting by Rishav Chatterjee in Bengaluru)
((Rishav.Chatterjee@thomsonreuters.com;))