Traditional owners of Queensland's Galilee Basin have accused the state's mines minister of betrayal as they launch fresh legal action against approval of Adani's Carmichael mine.

At the beginning of the month, Anthony Lynham cleared the last major state hurdle for the Indian giant to proceed with its $22 billion-project - which would be Australia's largest - including associated rail and port facilities.

Traditional land owners have launched fresh legal action against Adani's Carmichael mine.

Wangan and Jagalingou (W&J) representatives on Wednesday released a letter from the mines minister's office, dated October 2015, in which Dr Lynham said he would consider the lease applications after all legislative requirements were satisfactorily explored.

"In this particular case, the minister intends to wait for an outcome of the judicial review application," the letter read.