Mt Cotton resident Ian Bridge accused the Queensland Government of being either "hypocrites" or "liars" after deputy premier Jeff Seeney approved the giant Barro Quarry development in important koala habitat at Mt Cotton.

The Queensland Government has still not released details of the declining numbers of koalas in south-east Queensland as it is required under legislation.

The Barro Group application to extend their licence at the Mt Cotton Quarry had previously been rejected by Logan City Council in 2006, by Redland City Council in 2013, and by the Planning and Environment Court and Queensland's Supreme Court.

"We have spent 10 years of understanding our local environment, understanding our community and understanding the requirements," Mr Bridge said.

"And to have it trashed in this manner is a heart-rending blow to the community," he said.