Perpetua Resources EXIM Loan Could Advance US Antimony Supply From Stibnite

Perpetua Resources

Perpetua Resources EXIM loan expectations have moved into the final approval stage as the US antimony miner seeks $2.7bn in financing for its Stibnite Gold antimony-gold project in Idaho. The proposed loan from the US Export-Import Bank would support development of one of America’s most important domestic antimony projects.

The EXIM board unanimously decided to notify Congress of the proposed loan. This step begins a 25-day Congressional notice period before the agency’s board can vote on the final loan decision.

Perpetua Resources EXIM loan approval is not yet a firm financing commitment. However, the notification marks a major milestone after more than two years of work between Perpetua and EXIM to secure project financing.

Stibnite Project Targets Domestic Antimony Security

The Stibnite Gold project has strategic value because Perpetua estimates it contains 148mn lb of antimony reserves. Antimony is used in military applications, flame retardants, lead alloys, batteries, cables and other industrial products.

The US has limited domestic antimony supply, making Stibnite important for critical mineral security. A successful development could reduce dependence on foreign supply chains and support defense-linked material availability.

Perpetua received a preliminary, non-binding indicative term sheet from EXIM in September. The proposed financing remained subject to due diligence and the formal loan application process.

Federal Permitting and Financing Could Unlock Development

Perpetua received its final federal permit needed to start construction after being selected for a federal expedited permitting initiative last April. That permitting progress gives the project a clearer development pathway, although financing still needs final approval.

The Perpetua Resources EXIM loan would be significant because mine development requires large upfront capital before production can begin. For critical minerals projects, government-backed financing can help bridge the gap between strategic importance and commercial financing risk.

If approved, the loan could become a model for US support of domestic mineral projects tied to defense and industrial resilience. It would also show that antimony has moved from a niche specialty metal into a national security priority.

The Metalnomist Commentary

Perpetua’s EXIM process shows that critical minerals policy is becoming capital policy. The US can identify strategic minerals, but supply security only improves when permitting, financing and processing capacity move together.