IRONORE/ Mining trio Rio Tinto RIO.AX, BHP Group BHP.AX and Fortescue Metals Group FMG.AX fell between 7.9% and 6.2%. June 14 (Reuters) - Australian shares fell more than 5% on Tuesday and were headed for their worst session in over two years, as worries over rising inflation and fresh COVID-19 cases in China sparked a rout in global equities. Stocks and government bonds plunged across the globe as red-hot U.S. inflation data fuelled worries about more aggressive policy tightening by the U.S. Federal Reserve when it meets later this week.