Australian stock markets showed mixed performance Tuesday as critical minerals stocks dominated trading discussions.

Australian stock markets showed mixed performance Tuesday as critical minerals stocks dominated trading discussions. Metallium surged one cent to 57 cents after securing a landmark ten-year offtake agreement with Indium Corporation's Flash Metals USA unit to supply recovered critical metals including gallium, germanium, copper, tin, gold and indium. The deal uses formula-based pricing. Andromeda Metals advanced to 0.9 cents while progressing cornerstone equity funding for its Great White Project Stage 1A development, though Middle East tensions created headwinds. St George Mining declined 4.35 percent despite announcing Tecnicas Reunidas partnership to test rare earths samples at its Brazilian Araxá project, though the stock remains up 450 percent year-to-date. The broader ASX 200 finished 0.89 percent stronger after reversing early losses at lunchtime.