The approval of a large mine in the Tasmanian wilderness has ignited fiery exchanges in the island state, with a government minister called to explain his position.
Tasmanian Resources Minister Paul Harriss insists the Venture Minerals multi-million dollar tin and tungsten mine at Mt Lindsay in the state's Tarkine region, was granted a lease only after "rigorous assessment".
But green group Save the Tarkine is demanding a statement of reasons from the minister spelling out how the approval meets legal requirements.
"We remain of the view that the Mt Lindsay mine lease approval is unlawful," spokesman Scott Jordan said in a statement on Friday.
The group says the mining development footprint takes in 1029 hectares of rainforest, equivalent in size to 411 Melbourne Cricket Grounds.
Mr Harriss has rubbished the complaint.
"There is absolutely no room for doubt about the legality of the mine lease," he said.
The mine, one of three planned for the region by Venture, still needs federal approval.