Alkane Resources has expanded the mineral resource at its Björkdal gold mine in northern Sweden, while replacing the gold extracted during the latest mining period and strengthening the operation’s future reserve base. The latest resource and reserve statement reports 22.47 million tonnes of Measured and Indicated resources grading 2.07 grams per tonne gold, containing approximately 1.497 million ounces.
The operation also has 12.10 million tonnes of Inferred resources grading 1.57 g/t, representing a further 611,000 ounces of contained gold. Björkdal’s current Ore Reserve stands at 13.12 million tonnes grading 1.33 g/t gold, equivalent to approximately 563,000 ounces.
Resource Growth Despite Continued Mining
Compared with the June 2025 resource position, Measured and Indicated resource tonnage increased by approximately 10%, while contained gold increased by around 7%. Ore Reserves also rose by approximately 4%, from about 543,000 ounces, despite another year of mining activity. The replacement of mined ounces is a significant development for an established producing operation.
For mature gold mines, the ability to replace depletion through exploration and resource development can help maintain future production potential and extend the useful life of existing infrastructure. Alkane said exploration across its producing operations had allowed the group to replace depletion, with Björkdal contributing to the increase in its mineral inventory.
Near-Mine Exploration Supports Future Development
Björkdal is located in Västerbotten, one of Sweden’s established mining regions, and has existing underground and surface infrastructure. The latest resource figures indicate that continued exploration around the operating mine is identifying additional mineralisation within the broader Björkdal system.
Discoveries located close to existing infrastructure can offer development advantages because they may require less capital and supporting infrastructure than entirely new deposits. The expanded resource base also provides Alkane with greater flexibility when assessing future mine plans and determining which mineralised zones could eventually be converted into Ore Reserves.
Resource Does Not Equal Mineable Reserves
The increase in resources does not mean that all of the additional gold will ultimately enter production. Conversion into Ore Reserves depends on a range of technical and economic factors, including mining geometry, dilution, metallurgical recovery, operating costs, gold prices and the development required to access individual mineralised zones.
The distinction is particularly relevant at Björkdal because the current Ore Reserve grade of 1.33 g/t gold is below the average grade of the Measured and Indicated resource inventory. Future mine economics will therefore depend partly on how efficiently Alkane sequences higher-grade zones while maintaining production and processing performance.
Existing Infrastructure Supports Brownfield Growth
The resource increase comes as European gold producers continue to manage higher labour, energy and equipment costs. Under those conditions, extending an established operation through brownfield exploration can provide an alternative to developing an entirely new mine, particularly where underground and surface infrastructure is already available.
Additional mineralisation near Björkdal’s existing workings can potentially be incorporated into future mine planning without requiring the same level of infrastructure investment associated with a greenfield development. This makes resource replacement an important component of the mine’s longer-term planning.
Next Focus: Converting Resources Into Reserves
The latest update strengthens Björkdal’s position as an operating Swedish gold asset with a larger resource base and slightly higher reserves despite continued production. The next stage will be determining how much of the expanded resource can be converted into Ore Reserves and incorporated into a longer-term production schedule. For Alkane, the latest figures demonstrate that exploration has added material to the inventory while the mine continued producing gold. The key measure going forward will be whether that additional resource can translate into more mineable reserves, an extended mine life and sustainable future production at Björkdal.
