# North American critical mineral exploration

> Live situation record from CLSTR: https://clstr.news/situations/north-american-critical-mineral-exploration
> Updated: 2026-08-20T12:42:00.000Z. Sources: 3. Developments: 2.

Mining exploration for critical minerals is showing significant results across North America. In Canada, Thistle Resources reported high-grade antimony and silver assay results from its Brunswick Antimony Project in New Brunswick. Concurrently, Scandium Canada completed bulk sample drilling at its Crater Lake scandium project in Québec and initiated a new drilling campaign to test a mineralized corridor.

In the United States, exploration activities have also yielded high-grade findings. Prismo Metals identified silver, gold, and copper mineralization at its Silver King project in Arizona. Meanwhile, in Utah, Heliostar Metals reported surface sampling of antimony and gold at its Goldstrike project and has begun drilling to test the potential of these minerals beneath the surface.

## Timeline

### 2026-08-20: US mining exploration sees high-grade silver and antimony results

Mining companies report significant mineral discoveries in the US: Prismo Metals found high-grade silver and copper in Arizona, while Heliostar Metals identified antimony and gold potential in Utah.

3 sources. https://clstr.news/cluster/us-mining-exploration-sees-high-grade-silver-and-antimony-results

### 2026-08-08: Thistle Resources and Scandium Canada report progress in mineral exploration

Thistle Resources reports high-grade antimony and silver assays in New Brunswick, while Scandium Canada begins a major drilling campaign at its Crater Lake project in Québec.

2 sources. https://clstr.news/cluster/thistle-resources-and-scandium-canada-report-progress-in-mineral-exploration

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Cite as: North American critical mineral exploration. CLSTR, https://clstr.news/situations/north-american-critical-mineral-exploration