Alkane Resources Doubles Storheden Gold Resource to 212,000 oz

A single drill intercept returning 107 g/t gold from 293 m depth has put Alkane Resources’ Storheden deposit back in focus. The company announced on 29 July 2026 that the gold deposit in northern Sweden now hosts approximately 212,000 oz of gold, more than doubling the initial 99,000 oz Inferred resource estimated only months earlier. For Alkane shareholders and those tracking the company’s Swedish growth strategy at Björkdal, the update marks a step-change in scale and geological confidence. What follows breaks down the new resource figures, examines what the high-grade drill intercepts reveal about the deposit’s character, and outlines how Alkane plans to convert this early-stage discovery into a producing satellite mine alongside the established Björkdal operation.

Storheden resource more than doubles to 212,000 oz gold in latest estimate

The numbers tell the story quickly. Storheden’s total mineral resource now stands at approximately 2.92 million tonnes for approximately 212,000 oz of contained gold, up from an initial 2025 Inferred estimate of roughly 1.77 million tonnes at 1.74 g/t gold for approximately 99,000 oz. That is a resource that has more than doubled in a single update cycle.

What matters beyond the tonnage headline is the emergence of a first Indicated resource category at Storheden. An Indicated classification (a resource category reflecting higher geological confidence than Inferred, achieved through denser drilling) signals that parts of the deposit have been drilled at sufficient density to support greater certainty in the geological model. This is a confidence marker, not merely a size milestone.

The JORC Code resource classification standards define the criteria that separate Inferred from Indicated resources, with the upgrade requiring drill hole spacing dense enough to establish reasonable geological continuity and reduce estimation uncertainty to a level suitable for economic evaluation.

Alkane describes this as an interim snapshot. The deposit’s physical footprint spans approximately 800 m of strike, approximately 1,300 m in width, and extends from surface to approximately 500 m depth, with mineralisation reported as open in all directions including at depth.

MD and CEO Nic Earner described Storheden as “a significant new growth opportunity within the broader Björkdal operation,” noting that the deposit’s depth continuity and total extent remain unknown.

What the high-grade drill intercepts reveal about Storheden’s character

The standout number is hard to miss: 0.4 m at 107 g/t gold from 293.3 m depth. But the real story is the pattern behind it. Across the most recent 2025-2026 drilling campaign, Storheden returned a cluster of high-grade results at multiple depth levels, pointing to structurally controlled mineralisation that persists rather than pinching out.

Key intercepts from the latest campaign include:

• 0.4 m at 107 g/t gold from 293.3 m
• 0.95 m at 50.9 g/t gold from 406.2 m
• 0.6 m at 39.2 g/t gold from 496.0 m
• 0.5 m at 36.1 g/t gold from 491.4 m
• 0.7 m at 27.4 g/t gold from 133.3 m

The intercept widths are narrow. That is not a weakness. Storheden sits within the Björkdal district, where gold-bearing quartz veins characteristically deliver high grades over narrow widths. The grades compensate for the geometry, and the Björkdal operation has built a 1.69 million oz production history since 1988 mining exactly this style of deposit.

The updated resource incorporates 28 additional diamond drill holes totalling 14,061 m, completed across the 2025 and early 2026 campaigns.

Earlier campaign intercepts reinforce grade continuity

The high-grade pattern is not confined to a single campaign or a single hole. Earlier resource-extension drilling at Storheden returned results including 142.0 g/t over 0.60 m, 111.0 g/t over 0.50 m, and 41.4 g/t over 0.60 m, all from hole SH25-006. Depth-testing work in 2024 delivered 34.3 g/t over 1.6 m and 16.2 g/t over 0.70 m.

A total of 16 extensional drill holes were completed during the January to March 2026 campaign specifically, confirming active drilling momentum through the first quarter of the calendar year. These results, spread across campaigns and depth levels, suggest the structural controls on mineralisation are well understood, which de-risks the next phase of drilling.

Why being 700 m from an operating gold mine changes the economics

Storheden sits approximately 700 m north of the main Björkdal mine. That proximity is not background colour; it is a genuine value driver that separates this deposit from a typical early-stage greenfield discovery.

Björkdal has produced approximately 1.69 million oz of gold since 1988 and hosts total mineral resources of approximately 1.97 Moz (32.06 Mt at 1.91 g/t), with a Measured and Indicated component of 1.40 Moz (20.35 Mt at 2.14 g/t) as at 30 June 2025. It is an established, permitted operation with processing infrastructure and underground access already in place.

The satellite mine concept is straightforward: Storheden could potentially leverage Björkdal’s processing plant and underground access rather than requiring standalone development capital. Current drilling has tested Storheden to only around 500 m depth, roughly half the depth extent of the Björkdal mineralised system, quantifying the scale of untested potential below.

What Alkane Resources actually means by “open in all directions”

Mining announcements frequently describe deposits as “open in all directions.” The phrase can sound like boilerplate. At Storheden, it carries specific, measurable meaning.

When geologists describe a deposit as open, they mean drilling has not yet reached the edges of the mineralised system along one or more dimensions. In Storheden’s case, that applies to all three:

• Strike: Mineralisation extends across approximately 800 m of strike length, but drill holes have not yet intersected where grades fall away to the north or south.
• Depth: Current drilling has reached approximately 500 m below surface, roughly half the depth of the Björkdal mineralised system. The bottom of the deposit has not been found.
• Lateral extent: The system spans approximately 1,300 m in width, with the eastern and western boundaries not yet fully constrained by drilling.

This matters because it distinguishes Storheden from a fully drilled-out deposit where the resource can only shrink with further work. Here, the resource has clear room to grow, and Alkane has committed to testing those extensions with a planned 10,000 m surface drilling programme in FY2027.

For readers who track mining announcements regularly, this distinction is worth internalising. A deposit described as open in all directions, backed by consistent high-grade results across multiple campaigns, carries a different risk profile from one where boundaries are already defined.

Development timeline: drilling, permitting, and the path to first ore

A resource estimate is a starting point. What converts it into production value is the sequence of work that follows. Alkane has outlined a staged pathway for Storheden:

1. FY2027 surface drilling programme: An initial 10,000 m of diamond drilling aimed at both expanding the resource base and defining the boundaries of the mineralised system, particularly at depth and along strike.
2. Mine access development: Work toward establishing physical access to Storheden is planned to commence alongside the permitting process.
3. Permitting progress: Sweden’s regulatory framework involves a defined permitting process, which Alkane has flagged as part of the development pathway.
4. Resource classification upgrade: Alkane aims to upgrade further Inferred material to Indicated classification over time, increasing confidence levels in the estimate.

CEO Nic Earner positioned this work within Alkane’s broader strategy of growing near-mine resources to feed the Björkdal operation over the medium term, with Storheden representing the most advanced of those satellite growth opportunities.

The FY2027 drilling programme represents the nearest catalyst. Results from that campaign are expected to materially update both the resource estimate and the market’s understanding of Storheden’s ultimate scale.

Storheden resets expectations for what Björkdal can deliver over the next decade

The cumulative picture is clear. A resource that has more than doubled to 212,000 oz, high-grade intercepts reaching 107 g/t gold, infrastructure sitting 700 m away, and a deposit that remains open in every direction tested. Together, these elements shift the outlook for Björkdal’s medium-term production profile.

Significant work remains. Storheden must progress through further drilling, permitting, and mine development before it contributes a single ounce to production. The 29 July 2026 announcement establishes the baseline from which that work proceeds.

The FY2027 drilling programme is the next moment when this story materially updates. Until those results arrive, the resource stands at 212,000 oz and growing.

This article is for informational purposes only and should not be considered financial advice. Investors should conduct their own research and consult with financial professionals before making investment decisions. These statements are speculative and subject to change based on market developments and company performance.