The Australian Conservation Foundation must wait to learn if its latest challenge against the controversial Adani coalmine in Queensland's Galilee Basin has been successful.

The ACF appeared before the Federal Court in Brisbane on Friday to appeal a decision last year that gave the huge Carmichael project the green light.

Credit:Michele Mossop

But the full bench reserved its judgment after it heard submissions from the environmental group, federal Environment Minister Josh Frydenberg and Adani.

ACF barrister Saul Holt QC argued the original judge had erred when he found in favour of Mr Frydenberg and the Indian mining giant in August.