The Alberta government says a First Nation's concerns about the proposed Teck Frontier oilsands mine are more about getting a bigger share of the royalties than about protecting water, bison and other environmental concerns.

Athabasca Chipewyan First Nation Chief Allan Adam sent the federal government a letter last week suggesting that the Alberta government's failure to address environmental and cultural concerns about the project was putting it at risk as a deadline approaches for the federal government to give its approval.

But Alberta Environment Minister Jason Nixon said Tuesday that Adam's "primary" focus is on money.

"The reality is when we are meeting with Chief Adam, he continues to primarily focus on money," Nixon told Power & Politics host Vassy Kapelos. "We are very clear on the fact that we are not going to buy Teck approval. That's not something we are going to do."

Nixon made the comments the day before a meeting Wednesday between Alberta Premier Jason Kenney and the province's First Nations chiefs.

Alberta Environment Minister Jason Nixon contends the Athabasca Chipewyan First Nation's concerns about the Teck Frontier project are not just environmental in nature, but monetary too. 10:58

In July, a federal-provincial environmental panel recommended the approval of the Teck Frontier mine. The $20.6-billion project by Vancouver-based Teck Resources would disturb 292 square kilometres of pristine wetlands and boreal forest — an area half the size of the city of Edmonton — over its four-decade lifespan. Not all of the area will be mined at once, however.

Alberta is expected to reap $55 billion in tax and royalty revenue over the mine's 41-year life based on a price of $95 a barrel or more for oil.

ACFN is one of two Alberta First Nations whose reserve lands are located about 15 kilometres away from the proposed mega-mine site in northeastern Alberta.

“The only person that’s holding up the Teck Resource approval in my view...is the Alberta government,” said Chief Allan Adam of Athabasca Chipewyan First Nation (ACFN). “Jason Kenney and the UCP government for Alberta failed to accommodate ACFN’s needs." <a href="https://twitter.com/hashtag/cdnpoli?src=hash&ref_src=twsrc%5Etfw">#cdnpoli</a> <a href="https://t.co/589lYmronL">pic.twitter.com/589lYmronL</a> —@PnPCBC

In addition to accusing the Alberta government of risking the mine's rejection by the federal government, ACFN's chief has been trying to get Alberta's other 47 First Nations leaders behind him ahead of Wednesday's meeting with Kenney.

In a Feb. 10 letter to those chiefs, shared with CBC News, Adam attempts to rally support against the premier's plan for a Crown corporation to facilitate Indigenous ownership in natural resource projects.

Calling it a "pressing matter," Adam calls on bands "to send a strong message" against the Alberta government's attempt to get First Nations to participate in the Alberta Indigenous Opportunities Corporation. The AIOC would issue loan guarantees or backstops so First Nations and Métis communities could buy ownership stakes in resource projects.

Instead, Adam said, if the Alberta government wants Indigenous communities to get behind resource projects, it needs to share royalties.

"If the government of Alberta is serious about getting Indigenous communities on board with major industrial projects," Adam writes, "it should provide a share of the realized tax revenue from each project to impacted Nations."

A spokesperson for Alberta's environment minister also seized on Adam's letter to the chiefs, accusing the ACFN chief's of being preoccupied with money.

"It is interesting that so soon after his letter to the federal government claiming his concerns are about the environment, Chief Adam now writes another letter focusing on direct financial compensation," said Nixon's press secretary Jess Sinclair.

Sinclair also defended the AIOC, saying it provides business opportunities for Indigenous communities.

'Quit calling us money hungry'

Adam said the Alberta government was attempting to portray him in a negative light, trying to rely on tropes about First Nations chiefs.

Adam said he will be confronting the Alberta premier at Wednesday's meeting with chiefs.

"I am going to tell the premier, 'Mr. Premier, you are barking down the wrong tree. It seems that you want to kill this project with Teck Resources. We made the agreement with Teck Resources. We approved of Teck Resources. Why can't you deal with mitigation for the life of the project with ACFN and get this by and quit calling us money hungry?'" he said.

ACFN would not say how much money it's asking for from the Alberta government. Still, Adam noted that some of the funding his band is requesting would go to compensate the community for irreversible project impacts and habitat and wildlife monitoring.

"(Nixon) shouldn't paint it as asking for a handout," Adam said. "If Alberta won't mitigate our environmental concerns, the only alternative is compensation to be directed towards protecting our land, navigation routes and wildlife."