American West Metals Defines Maiden JORC Exploration Target of Up to 214Mt at Storm Copper Project

Anjali Anand

09 November 2026 03:33 PM AEDT

American West Metals Defines Maiden JORC Exploration Target of Up to 214Mt at Storm Copper Project

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American West Metals (ASX:AW1) has defined a maiden JORC Code 2012 compliant Exploration Target for its 80%-owned Storm Copper Project on Somerset Island, Nunavut, Canada, estimating additional mineralised material outside the existing Mineral Resource Estimate in the range of 110Mt to 214Mt at 0.59% Cu to 1.02% Cu, representing approximately 646Kt to 2.2Mt of contained copper.

Key Points

Exploration Target estimated at 110Mt to 214Mt at 0.59% to 1.02% copper, with approximately 646Kt to 2.2Mt of contained copper, outside the existing Mineral Resource Estimate.
Seven high-priority target areas defined: Resource Expansion, Deeps Zone, Central Graben, SE Stratabound, SE Structure Related, Tornado, and Chevron.
Storm Copper Project already hosts a Mineral Resource Estimate of 28.2Mt at 1.0% Cu and 3.3g/t Ag, and an Ore Reserve of 12.58Mt at 1.2% Cu and 3.71g/t Ag, backed by a positive Pre-Feasibility Study.
A work program of drilling and surface geophysics is planned to commence during 2027 to advance the Exploration Targets.

Exploration Target Breakdown Across Seven Priority Areas

According to the filing, the Exploration Target covers seven distinct areas within the Storm Copper Project. The Tornado target represents the largest single contributor, ranging from 29.1Mt to 87.4Mt. The Central Graben is estimated at 27.1Mt to 40.7Mt, while SE Stratabound contributes 26.7Mt to 40.1Mt. The Deeps Zone ranges from 13.6Mt to 20.4Mt. The Resource Expansion, SE Structural, and Chevron areas provide further tonnage contributions. All mineralisation defined within the Exploration Targets is classified as fresh sulphide and is chalcocite dominant. The targets cover only a small portion of the 110km copper belt at Storm.

Geological Model Underpinning the Target Estimation

The Storm Copper Project geological model is based on two distinct sediment-hosted copper mineralisation styles: stratabound and structure related. Stratabound copper-silver mineralisation is hosted within reductant-rich, porous and/or structurally prepared sedimentary horizons, occurring primarily within the Allen Bay Formation. Structure-related mineralisation is interpreted to be sourced from deep within the sedimentary basin and migrates along feeder faults and secondary deposit-scale faults. The Thunder and Gap deposits are classified as mixed style. The estimation of the Exploration Targets is supported by geological, geophysical and geochemical data, with the methodology described in accordance with JORC Code 2012.

Planned Work Program and Project Context

The company disclosed that a work program consisting of drilling and surface geophysics will be used to advance the Exploration Targets, with commencement planned during 2027. The filing states the Exploration Target was defined using a database of existing drilling and project-wide exploration data, supported by the company's understanding of the Storm deposits and global geological analogies. The potential quantity and grade of the Exploration Target are conceptual in nature, and it is uncertain whether further exploration will result in a Mineral Resource estimate. Tonnage and grade figures are stated as ranges and are approximate, reflecting the conceptual nature of the targets.

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