Perpetua Secures $2.9 Billion U.S. Loan — Boosts Domestic Antimony Supply

John NadaBy John Nada·May 21, 2026·4 min read
Perpetua Secures $2.9 Billion U.S. Loan — Boosts Domestic Antimony Supply

Perpetua Resources secures a $2.9 billion loan for its Idaho project, a move to challenge China's hold on the antimony market.

Perpetua Resources has clinched a $2.9 billion loan from the U.S. Export-Import Bank to fund its ambitious Stibnite Gold Project in Idaho, CNBC Business reported. This deal isn't just about gold; it's a strategic move to break China's grip on the antimony supply chain.

Antimony, a critical mineral deemed essential by the U.S. Geological Survey, is vital for defense, semiconductors, and renewable energy technologies. Yet, China dominates this market, satisfying over half of U.S. demand. Perpetua's project promises to alter this dynamic, potentially supplying about 35% of U.S. demand within its first six years.

The Stibnite Gold Project, located in a remote area of the Payette National Forest in Valley County, Idaho, is a proposed open-pit mine that will produce both gold and antimony. This dual production is particularly significant given the current geopolitical landscape. With China controlling a substantial share of the global antimony supply, the U.S. has been increasingly focused on diversifying its sources for critical minerals.

The importance of this project is underlined by its funding — the largest loan under the Export-Import Bank's 'Make More in America' initiative and the fourth largest on the agency's books. According to CNBC Business, Perpetua shares jumped over 12% following the announcement, reflecting investor confidence.

This loan isn't occurring in a vacuum. It's the latest in a series of U.S. government initiatives to secure critical mineral supplies. The White House unveiled 'Project Vault' earlier, a $12 billion program aimed at stockpiling essential minerals, with significant backing from the Export-Import Bank and private capital.

Perpetua has already begun construction on the Stibnite site, aiming for it to be operational by 2029. The company is not just eyeing the economic benefits; it's also positioning the project as a strategic asset for national security. The Stibnite site is touted as the only domestic source capable of meeting U.S. antimony needs for weapons production, a crucial factor given the mineral's applications in defense.

The strategic significance of antimony cannot be overstated. It's used in the manufacture of munitions and is a key component in semiconductors and renewable energy technologies, including solar panels and wind turbines. This makes the Stibnite Gold Project not just a mining endeavor but a cornerstone of U.S. efforts to build resilience against potential supply chain disruptions.

Moreover, the U.S. has been actively pursuing partnerships and investments to bolster its critical minerals sector. In February, the White House unveiled 'Project Vault,' marking a shift towards public-private partnerships in mineral stockpiling. This $12 billion initiative involves $10 billion in funding from the Export-Import Bank and $2 billion from private capital, indicating the scale and importance of the government's commitment to mineral security.

The U.S. has also taken equity stakes in mining companies directly, aiming to secure a foothold in the critical minerals market. Notable investments include those in MP Materials and USA Rare Earth, with the Pentagon announcing deals that include offtake agreements and price floors. These moves are part of a broader strategy to reduce reliance on foreign sources and ensure a stable supply of essential minerals.

Historically, the U.S. was once the largest producer of rare earth elements, but its output plummeted after China entered the market aggressively, offering low prices that undercut global competitors. The current focus on domestic production represents a strategic pivot, acknowledging past vulnerabilities and aiming to preempt future supply challenges.

The Stibnite Gold Project is, therefore, more than a mining operation; it's a microcosm of the broader geopolitical and economic strategies at play. By securing this loan and advancing its project, Perpetua Resources is positioning itself as a key player in the U.S.'s critical minerals strategy. This aligns with the government's broader efforts to build a resilient and self-reliant supply chain, ensuring that the U.S. is not left vulnerable to foreign supply constraints in the future.

As construction progresses and the project moves towards operational status, the Stibnite Gold Project will likely attract further interest from both governmental and commercial entities looking to secure their supply chains. The project's success could serve as a model for future initiatives aimed at bolstering domestic production of critical minerals, reinforcing the U.S.'s position in the global market and ensuring national security.

In this broader context, the U.S. is clearly signaling its intent to not just react to global supply chain challenges but to proactively build the infrastructure and partnerships necessary to maintain a competitive edge. Through initiatives like the Stibnite Gold Project and 'Project Vault,' the U.S. is laying the groundwork for a more secure and self-sufficient future in critical minerals.

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