The Queensland government has extended the deadline to finalise a royalties agreement with Adani for its contentious Carmichael coal mine in the Galilee Basin for a second time.
The Queensland Coordinator-General extended the original deadline by a month to November 30 but both parties are yet reach an agreement, Adani told AAP.
"We are working with the Queensland Government to set a new target date for completion," an Adani spokeswoman said.
"We remain committed to concluding the royalty agreement and delivering the Carmichael Project for the benefit of Queenslanders."
The terms of the negotiations are subject to legal agreements which ensure the terms of the royalties remain confidential.
No new deadline has yet been set, but the delay has not stopped construction at the mine.
The royalty delay has renewed calls for the government to take its deal off the table from the the Australian Conservation Foundation.
Senior campaigner Christian Slattery said the lack of backing from Australian banks and the environmental risks of the mine should be a cause for the government to back away.
"Adani's inability to finalise a royalty deal with the Queensland government pours cold water on the company's claims to be progressing at full pace with its polluting coal mine,' Mr Slattery said.
"At the last state election the Queensland premier promised there would be no public money for Adani's mine. We call on her to honour that promise and ensure there is no special royalty deal for Adani.
"Adani's coal mine will further accelerate climate change, which is already contributing to this season's devastating bushfires."