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American West Metals Expands Storm Copper Resource 20% with Early West Desert Drilling Hits

Mining By Maxwell Dee 6 min read

American West Metals reported a 20% increase in contained copper at its Storm Copper Project and intersected promising skarn mineralisation in initial West Desert drilling, highlighting significant exploration upside across its North American base metals portfolio.

  • Storm Copper MRE expanded to 28.2Mt at 1.0% Cu and 3.3g/t Ag
  • First West Desert drill hole intersects 77.65m zinc-copper skarn mineralisation
  • Chevron Prospect identified as a major new copper target near Storm
  • Development studies at Storm focus on mine plan and processing optimisation
  • US government relations strengthened with Washington DC firm appointment

Storm Copper Resource Grows with Higher Confidence

American West Metals (ASX:AW1) has delivered a robust upgrade to its Storm Copper Project in Nunavut, Canada, with the total JORC (2012) Indicated and Inferred Mineral Resource Estimate (MRE) expanding 20% in contained copper to 28.2 million tonnes grading 1.0% copper and 3.3 grams per tonne silver. This translates to 276,000 tonnes of copper and nearly 3 million ounces of silver, with over 65% of the metal now classified as Indicated, a critical step towards reserve definition and development planning.

The updated resource encompasses seven deposits including Cyclone, Chinook, and Corona, with mineralisation styles ranging from sediment-hosted stratabound to breccia/fault-hosted high-grade zones. The resource remains open in multiple directions, underscoring the potential for further growth. The recent upgrade builds on a 2025 Preliminary Economic Study that outlined a technically robust, low-capital open-pit project with a post-tax NPV of US$149 million and an IRR of approximately 46%, underpinning the project's economic viability.

Regional exploration has also identified a significant new copper anomaly named the Chevron Prospect, a 4.1km by 0.7km soil geochemical anomaly paralleling the main Storm trend. This target has yet to see geophysical surveys or drilling but shares geochemical and structural characteristics with known high-grade deposits, promising further resource expansion potential along the 110km prospective copper horizon at Storm. The company plans focused drilling programs to test Chevron and other newly identified targets, aiming to accelerate resource definition.

Workstreams for mine plan optimisation and process flow sheet design continue, as American West advances permitting and development studies supported by the Nunavut Planning Commission. The Storm Project’s designation as a “national interest” under Canada’s Resource Project Fast-Track Bill enhances its strategic positioning for expedited approvals.

West Desert Drilling Uncovers Thick Zinc-Copper Skarn Mineralisation

Meanwhile, at the West Desert Project in Utah, USA, the initial diamond drill hole of a 5,000m campaign has intersected a visually impressive 77.65m interval of zinc (sphalerite) and copper (chalcopyrite) skarn mineralisation approximately 400m downhole. This first hole, drilled 430m east of the existing West Desert Deposit, confirms the source of a large 4km magnetic anomaly and validates the geological model, highlighting a highly prospective porphyry contact largely unexplored to date.

The skarn mineralisation style closely resembles the known West Desert Main Zone, which is enriched in critical metals including indium, gallium, germanium, and tellurium. Assays are pending but the visual mineralisation, combined with portable XRF results indicating anomalous gold pathfinder elements such as tungsten and arsenic, suggests a potential epithermal gold system overlapping the base and critical metals mineralisation. A second drill hole targeting the Juab Fault, a known high-grade corridor, is underway.

Historical mine dump sampling across West Desert has confirmed exceptionally high grades of critical metals, with peak assays including 1,807g/t silver, 176.5g/t indium, 48g/t germanium, 1,010g/t tellurium, and base metals up to 24.5% zinc and 31.3% lead. These waste dumps represent a potential near-term resource for critical metal recovery, supported by evolving processing technologies and government reclamation incentives. Rock sampling has further expanded the mineralised footprint, returning surface values up to 17% zinc and 16% lead in previously unexplored areas, significantly enlarging the exploration target zone.

American West’s engagement with the Utah Geological Survey and a US Geological Survey federal grant for indium studies underpin a comprehensive understanding of the deposit’s critical metal distribution and formation, supporting ongoing exploration and resource delineation.

Strategic US Government Engagement to Support Project Advancement

In a strategic move to deepen ties with US government agencies and downstream partners, American West has appointed Ervin Graves Strategy Group, a Washington DC-based government relations firm with high-level connections in critical minerals policy and defense sectors. This relationship aims to position West Desert at the core of US national security and critical minerals initiatives, potentially unlocking funding and support from programs such as the Critical Minerals Innovation Hub and Defense Production Act incentives.

The appointment complements American West’s broader critical metals strategy and aligns with the US government’s emphasis on securing domestic supply chains for essential minerals.

Financial Position and Operational Outlook

American West reported operating cash outflows of AUD 1.973 million for the March quarter, primarily driven by exploration and evaluation activities across its projects. The company ended the quarter with AUD 4.803 million in cash reserves and no drawn debt facilities, providing a runway of approximately 2.4 quarters at current expenditure levels. Payments to directors totalled AUD 199,000 during the period.

Recent capital raises, including a significant A$10 million institutional placement, have bolstered the company’s capacity to accelerate exploration and development activities at both Storm and West Desert, focusing on critical metals and base metal resource growth. This financial foundation supports ongoing drilling, resource expansion, and permitting efforts.

American West’s latest resource update builds on its previous detailed JORC-compliant Mineral Resource Estimate for West Desert, which confirmed a substantial zinc-copper-indium-magnetite system covering 32 square kilometres. The ongoing drilling and sampling programs are designed to refine resource classifications and unlock further critical metal potential, reinforcing the company’s position in North America’s strategic minerals landscape.

The company’s progress at Storm and West Desert, combined with its strategic government engagement, positions it well to capitalise on the growing demand for copper, zinc, and critical metals essential to clean energy technologies and national security.

Investors will be watching closely for upcoming assay results from West Desert’s drilling campaign and further exploration updates from the Chevron Prospect near Storm, which could materially enhance the company’s resource base and development prospects.

American West’s approach to expanding its resource inventory and strengthening government relations underscores the complexities and opportunities inherent in advancing critical mineral projects in Tier 1 jurisdictions.

With less than 10% of the Storm copper belt systematically drilled and multiple high-priority targets identified at West Desert, the company’s exploration narrative remains one of significant potential and unfolding discovery.

As assay results for the West Desert drill holes are awaited, the market will be assessing how these early visual successes translate into quantifiable resource growth and economic value.

Meanwhile, the Chevron Prospect’s untested scale and similarity to known deposits make it a compelling focus for upcoming field programs, potentially adding a new dimension to American West’s Canadian portfolio.

These developments come amid broader industry efforts to secure supply chains for critical metals, with American West’s dual-country footprint offering strategic leverage in this evolving landscape.

American West Metals is thus navigating a pivotal phase where exploration results, resource upgrades, and strategic partnerships could collectively shape its trajectory within the competitive base and critical metals sector.

JORC Mineral Resource Estimate update and Critical Metals Drilling Underway provide further context on the company’s resource and drilling progress, while the recent A$10 Million Placement underpins its financial capacity to advance these initiatives.

Bottom Line?

Upcoming assay results from West Desert and exploration at Chevron will be critical to validate early visual successes and resource expansion potential.

Questions in the middle?

  • Will assays confirm the presence of critical metals in West Desert’s new skarn mineralisation?
  • How quickly can American West translate the Chevron Prospect anomaly into a defined resource?
  • What impact will enhanced US government engagement have on funding and project timelines?