Regional Aboriginal communities in Tasmania are calling on the Dorset Council to reject a development application which would see 770 hectares of the state's North-East coastline mined over the next 40 years.

Project proponents North Scottsdale Resources want to dredge and process between 70 and 100 million tonnes of fine sand over 35 to 40 years at Rushy Lagoon for concrete production, Tasmanian Country reports.

The property, which is Tasmania's largest farm, was recently sold in a controversial deal to a UK investment firm to convert productive agricultural land into pine forests for carbon credits.

Melaythenner Teeackana Warrana Aboriginal Corporation (MTWAC) co-chair, Mark Harriss, said the proposed mine would see up to three million tonnes of sand dug out of dunes at Boobyalla and shipped overseas.

"This area is not only rich in cultural heritage, but a mining operation of this scale has the potential to materially alter the landscape beyond repair," Mr Harriss said.

"The proponents want to extract vast amounts of sand, ship it off for processing via a 700m wharf facility, and then turn the hole they leave behind into a man-made lake.

"This is being driven by economics and politics, with limited defined means of rehabilitation at this stage."

Mr Harriss said once sand dunes have been extracted and removed, "nothing can rehabilitate that sort of damage to a dune system".

"The dunes slated for mining are a tapestry of ecological brilliance that have taken tens of thousands of years to create, and are an ongoing living landscape," he said.

"To destroy these inside 40 years, then flood the area and walk away is simply not acceptable and not in the community's interest."

National Indigenous Times understands North Scottsdale Resources were awarded an exploration licence for a 713ha site in 2015.

Company director Tony Ellis told the North-Eastern Advertiser a permit application is imminent for a mining lease.

Mr Ellis said the new mine would address the significant demand for sand both locally and globally.

"Up to 25 jobs, including the 13 transfer vessel crew required by the Australian Maritime Safety Authority, would be created on site at the mine in the initial stage, with a further 12-14 jobs needed if an evening shift was introduced, bringing the total employment to around 40," Mr Ellis said, the North-Eastern Advertiser reports.

"Our philosophy would be to involve the local community as much as we can."

However Mr Harriss said Aboriginal communities had not been adequately consulted about the project and its potential impacts.

"This area is significant to Aboriginal people beyond modern concepts of being. It not only contains our lived history and our stories and lore, but it will almost certainly contain the ancestral remains of our families," he said.

"Assessing a site for Aboriginal heritage is an imperative but it should not be mistaken as a substitute for meaningful, deliberate and comprehensive engagement with Aboriginal people who have a lasting, strong and unbreakable connection with this country.

"Proper engagement must be given a chance to occur. Aboriginal people need to be embedded as key stakeholders before critical decisions are made - not as a tick-box exercise once the sand is already extracted, loaded and heading for an overseas interested party."

Dorset Mayor Rhys Beattie said he had not yet spoken to North Scottsdale Resources about the project.

"If there's a market for it and it's done in both a sustainable way for the environment and the community, then it's a great resource," Cr Beattie said, Tasmanian Country reports.

"Let's support them and make sure it's done properly - it could be a valuable thing for the community."

Mr Beattie said he was aware of the Aboriginal Heritage sites in the project area.

"As long as that is protected and the environmental work is done, then that is a positive thing," he said.

"Hopefully there's some local jobs from the operation."

MTWAC chief executive officer and Tasmanian Regional Aboriginal Communities Alliance (TRACA) chair, Nick Cameron, said the proposed sand mine "will cause permanent damage to Country and threaten important cultural heritage".

"Despite what is at stake, affected Aboriginal communities have not been meaningfully consulted," Mr Cameron told the North-Eastern Advertiser.

"Once Country is disturbed, it can't just be put back.

"MTWAC will lead a coordinated regional Aboriginal community response opposing the proposed mine."

Mr Harriss said MTWAC and other TRACA members are hopeful the Dorset Council will put a pause on the mining proposal and an associated wharf development to allow proper consultation and scrutiny to occur.

"To ensure the integrity of the process, all regulatory steps regarding the proposed Boobyalla silica mine must be halted until a framework of genuine consultation is established that

respects the Tasmanian Aboriginal people's right to Free, Prior, and Informed Consent (FPIC), a core collective right enshrined in international law under the United Nations Declaration on the Rights of Indigenous Peoples (UNDRIP)," Mr Harriss said.

"People need to be given a chance to understand the true size, complexity and impact of what's being proposed.

"It must be a transparent and honest conversation with everyone involved - particularly those who have a strong connection to this place."