Queensland Environment Minister Leeanne Enoch has been filmed saying she is "devastated" following her own department's approval of the Adani coal mine.

Key points: Environment Minister Leeanne Enoch says her comments were about the division within Indigenous communities

Environment Minister Leeanne Enoch says her comments were about the division within Indigenous communities Ms Enoch says she was caught out by the activist lifting her shirt while posing for a photo

Ms Enoch says she was caught out by the activist lifting her shirt while posing for a photo Deputy Opposition Leader Tim Mander says Ms Enoch has been "caught out"

Opposition Deputy Leader Tim Mander said it showed senior figures inside the Government remained divided on the project's approval.

Ms Enoch was questioned by an anti-Adani activist at an Indigenous festival at Yarrabah, near Cairns, over the weekend.

The Minister, who is the first Indigenous woman elected to the Queensland Parliament, was approached by an activist and asked her opinion on selling Indigenous water rights associated with the mine.

Video of the exchange, posted by environmental activist group Stop Adani Cairns, shows a woman saying to Ms Enoch: "I'm really sorry that you had to do that".

Ms Enoch can be heard responding with: "I'm devastated".

The woman then asks the Minister: "Why did you have to do it?"

Ms Enoch replies: "Because I had to obey the law".

Ms Enoch is then asked by the activist: "And you're going to fight for us?"

Ms Enoch replies: "Absolutely".

The Queensland Government approved Adani's final environmental plan last week, green-lighting the Indian mining firm to start construction on the mine in the Galilee Basin in central Queensland.

Final environmental approvals came under the purview of the state coordinator-general last month when Premier Annastacia Palaszczuk moved to speed things up.

Ms Palaszczuk said at the time she was "fed up" with waiting for the Department of Environment and Science to deal with the last two Adani approvals.

In the wake of the mine's controversial approval, anti-Adani activists had promised to increase political pressure.

The Minister was also seen at Yarrabah posing for a photo with an activist wearing a "Stop Adani" shirt.

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On Monday afternoon, Ms Palaszczuk was forced to clarify Ms Enoch's comments.

"Look, my understanding is that Minister Enoch was devastated in terms of the division that that was causing in Indigenous communities," Ms Palaszczuk said.

"That is the information she has conveyed to me."

In a statement, Ms Enoch likewise denied her comment was directly linked to the approval of the coal mine.

"At the Yarrabah Festival I was approached by a person who introduced herself as a union member and asked for a photo with me," she said.

"As the photo was taken, that person lifted up a layer of clothing to reveal a Stop Adani T-shirt.

"She asked me how I felt about the way traditional owners have been affected by the Adani mine, to which I responded, 'devastated'.

"I am particularly devastated about how this issue has divided traditional owners — a division which may have been lessened if there was a treaty in place.

"I understand this is an issue that people care a great deal about and I am devastated at how this project has been used as a weapon to divide our state."

'Disunity in the ranks'

But Mr Mander said the comments were a clear example of disunity with the senior ranks of the Palaszczuk Cabinet.

"Today we see Leeanne Enoch caught out," he said.

"The Labor Party says one thing in public and another thing in private.

"It would seem that the obstacle course that Labor has put out to stop the development of the Galilee Basin is far from over."