Japan and US Chart Joint Critical Minerals Path Amid Supply Chain Diversification

Japan and the United States are poised to announce joint development agreements for critical minerals at this week's summit, with Japanese firms Mitsubishi Materials and Mitsui & Co. participating in projects that include a rare earth refining operation in Indiana and lithium mine development in North Carolina. This agreement underscores accelerating global efforts to build resilient, Western-aligned supply chains as geopolitical tensions reshape mineral sourcing strategies.

The momentum extends beyond the US-Japan partnership. American Rare Earths has been selected to supply feedstock from its Cowboy State mine to the Department of Energy's METALLIC research consortium, which combines nine national laboratories to validate and commercialize domestic critical minerals processing technologies. The Halleck Creek project in Wyoming holds 547.5 million tonnes in total rare earth oxides, positioning it among the world's top 10 rare earth deposits. This collaboration provides third-party validation of American Rare Earths' processing methods while potentially accelerating development of more efficient magnetic rare earth extraction techniques.

Canada's antimony sector is gaining traction as Antimony Resources advances toward its first mineral resource estimate at the Bald Hill deposit in New Brunswick. The junior miner has completed half of a 10,000-metre resource definition drill program with SRK Consultants hired for estimation work, expecting results within 3-4 weeks. Share prices surged more than 10% to an all-time high of C$1.59, reflecting investor confidence in domestic antimony production as the industry addresses gaps left by China's control of the Beaver Brook mine in Newfoundland.

Geopolitical disruptions are reshaping global mineral flows. The Iran conflict has triggered zinc concentrate shipment cancellations from Bandar Abbas, a critical port for Chinese smelters that rely on Iran and Russia for approximately 15% of their feedstock needs. Russia's Ozernoye mine, expected to ramp up significantly in 2026, is underperforming due to quality issues and sanctions pressures, leaving Chinese buyers scrambling for alternative feedstock through May and June.

Other jurisdictions are stepping into the diversification narrative. Harena Rare Earths has entered an exclusivity agreement to acquire heavy rare earth and uranium assets in San Bernardino County, California, positioning itself near MP Materials' Mountain Pass mine. Chile and the US have signed a joint statement initiating critical minerals collaboration discussions, while the US has launched a $500 million funding initiative to support demonstration and commercial-scale processing and recycling facilities. These coordinated efforts reflect a fundamental restructuring of global critical minerals governance away from Chinese supply chain dominance.