Sheep Creek Carbonatites Assay Up To 20.1% TREE and 363ppm Gallium

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Vancouver, British Columbia and Salt Lake City, Utah--(Newsfile Corp. - March 25, 2024) - US Critical Metals Corp. (CSE: USCM) (OTCQB: USCMF) (FSE: 0IU0) ("USCM") and US Critical Materials Corp. ("Materials Corp.") (collectively, the "Partners") are pleased to report the results for the surface sampling completed at the Sheep Creek Rare Earth Project in southwestern Montana ("Sheep Creek" or the "Project"). The Partners received analytical results for 69 samples including 43 grab/rock chip samples and 26 rock channel samples. The channel samples range from 1 to 9 feet in width. Samples were analyzed by Activation Laboratories ("Actlabs"), located in Ancaster, Canada.

The sample results were assayed multiple times to confirm the presence of gallium (Ga), a highly sought-after and strategic mineral in the US. The US currently imports 100% of its gallium and China controls about 98% of the global market for gallium (Source: U.S. Geological Survey, Gallium Statistics and Information, 2024). Gallium is used for semiconductors, 5G technology, smartphones, satellite systems, critical photonics technologies, and military radar systems. The list of critical minerals identifies gallium as a US supply risk.

Highlights from the Surface Sampling Program

  • Detection of up to 363ppm Ga with an average of 93ppm Ga for 69 samples.

  • Continued confirmation of high rare earth element values at Sheep Creek distributed over a broad area as shown in the historic and current sample results.

  • Samples revealed rare earth mineralization with grades including:

    • Sample #21112: 201,216ppm (20.1%) Total Rare Earth Elements ("TREE"), containing 28,330ppm (2.8%) combined neodymium and praseodymium ("Nd+Pr") and 363ppm Ga; and

    • Sample #21099: 182,255ppm (18.2%) TREE, containing 32,750ppm (3.3%) combined Nd+Pr and 348ppm Ga.

  • Sample results identify multiple zones of surface mineralization and select samples reveal new zones hosting exploration potential.

The sampling covered areas proximal to the underground workings developed in the late 1950's for niobium mineralization by the Continental Columbium Company along with new carbonatite exposures north, south and west of the historic workings. The historic workings and property have not been previously evaluated for rare earth mineralization or gallium.

Figures 1, 2, 3 and 4 summarize results for the sampling program and map the location of the samples in terms of TREE, Ga and Nd+Pr. Notwithstanding the sampling work done to date, a significant amount of the Project remains unexplored and remains prospective for these elements. All exploration work was completed in compliance with US Forest Service requirements.