Mining magnate and Federal MP Clive Palmer says he has documents disproving claims he tried to corruptly influence Queensland Government decisions.

Mr Palmer says he has evidence that Deputy Premier Jeff Seeney has made inconsistent and false claims about their dealings.

Mr Seeney says Mr Palmer sought favourable treatment in April 2012 for his coal company in Queensland's Galilee Basin, when the businessman was a big financial supporter of the Liberal National Party (LNP).

He says Mr Palmer even brought draft legislation to a meeting in 2012.

Speaking to the ABC on June 6, Mr Seeney said Mr Palmer talked about the support he had given the LNP at that meeting.

"And the fact that he had a lot more money to give in the future," Mr Seeney said.

"He wanted special treatment. He wanted us - our Government - to act inappropriately, to make decisions.

"I believe it would have been corrupt."

The Queensland Government then later released documents it says showed Mr Palmer's company, Waratah Coal, offered to drop legal action in exchange for project approvals.

Allegations made 'absolutely false and rubbish'

However, Mr Palmer has now released letters signed by Mr Seeney and Queensland Premier Campbell Newman.

"What they prove is in writing is that the allegations the Deputy Premier has made are absolutely false and rubbish," Mr Palmer said.

Despite Mr Seeney's allegations of corruption, the letters show a willingness for the State Government to deal with Mr Palmer and his company even after that initial meeting.

In a letter dated April 20, 2012, Mr Seeney said: "I congratulate you for your efforts to date, which are contributing to the long held vision of the Galilee Basin becoming a major new resource region."

In another letter on December 12, 2012, addressed "Dear Clive", Mr Seeney said: "I reiterate my preparedness to meet with you personally on a regular basis ... and I value the progress we have made today on repairing the relationship between your company and our Government".

"They wouldn't write to me in those sort of terms, glowingly, about what I've done if anything like what the Deputy Premier's said happened," Mr Palmer said on ABC TV's Lateline program last night.

However, Mr Seeney told the ABC last night the letters were consistent with the way the State Government treats all mining proponents equally.

Mr Seeney reiterated Mr Palmer wanted special treatment for his donations and has defended referring Mr Palmer to the Crime and Misconduct Commission (CMC).

This morning, Mr Palmer also said on ABC Local Radio in Brisbane his proposed bill would not have favoured his own company, Waratah Coal.

"The document was designed to give everybody, every company, open access," he said.

"That didn't suit [Mr] Seeney because three months later, he gave it to the Indians and told Queensland companies to stop work on their project.

"He's making all of that up and I've got the evidence.

"I've got the people who prepared the documents all on affidavit - happy to show that."

CMC controlled by Queensland Premier, Palmer says

Mr Seeney has sent related documents to the CMC for its consideration.

But Mr Palmer says he will not be referring his own evidence to the CMC, because he believes the organisation is no longer independent.

"The Crime and Misconduct Commission is controlled by the Premier of Queensland, who I'm suing," Mr Palmer said.

"If we have an investigation it needs to be independent.

"I never tried to influence anybody. I tried to just defend the rights of my company, which were granted under the [former Labor] Bligh government to develop that project."

Mr Palmer now plans to sue Mr Seeney for defamation, in addition to existing legal action against Mr Newman.

"We have got an action in the Supreme Court now," he said.

"These documents will be tabled in the Supreme Court against the Premier and against Jeff Seeney.

"He'll have his day in court. He'll be able to be cross-examined."