Australian Prime Minister Julia Gillard says further consultations and talks will be held with the mining industry players regarding the new mining tax implementation.

Ms. Gillard and Wayne Swan, Deputy Prime Minister, visited north Queensland's Hay Point coal plant on Saturday to promote the new Mineral Resources Rent mining tax.

The new mining tax, disclosed on Friday, involves lessening the new duties on mining firms to 30 from 40 per cent.

Ms Gillard points out that while mining companies are still studying the new tax's details, new opportunities for input will arise for sure.

"The good faith and good will that we've brought this week as we've sat round a table to get the agreement ... will continue through the process chaired by Don Argus, working with my Minister Martin Ferguson," Ms. Gillard he said in a statement.

"[They will] work on the implementation of these new arrangements."

Chris Evans, Minister for Immigrations, also dispelled allegations that the new mining resources tax might be unconstitutional, as he says the Government has been advised that it is absolutely legal.

"We believe the tax is constitutionally valid," he said.

"I'd encourage [Western Australian Premier Colin] Barnett to get on board and help ensure West Australians get a fair share of their resources through this taxation regime."

According to ABC reports, Mr. Barnett said that there would probably be a legal opposition to the nre mining resources tax.

He says that the new mining resources tax, it seems, is placed on mineral resources, which, based on the constitution, belong rightly to the state, and not to company profits.