Alkane’s Capital Spend at Costerfield Raises Questions on Future Production Risks

Alkane Resources has released its FY25 Mineral Resources and Ore Reserves update, highlighting a robust asset base across Australia and Sweden and reinforcing its growth trajectory with ongoing capital investments.

  • Updated Mineral Resources and Ore Reserves compliant with JORC and NI 43-101
  • Total gold resources exceed 12 million ounces across four key assets
  • Significant antimony and copper contained in Costerfield and Boda-Kaiser projects
  • Three operating mines plus major development project at Boda-Kaiser
  • Focused capital expenditure to expand resource base, especially at Costerfield
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Robust Resource Base Across Multiple Jurisdictions

Alkane Resources Limited has unveiled its updated Mineral Resources and Ore Reserves estimates as of 30 June 2025, covering its mining assets in Australia and Sweden. The company’s portfolio includes three operating mines; Tomingley and Costerfield in Australia, and Björkdal in Sweden; alongside the large-scale Boda-Kaiser gold-copper project in New South Wales. This update reaffirms Alkane’s position as a significant player in gold and antimony production, with a consolidated resource base that supports both current operations and future growth.

Key Metrics Highlight Strong Metal Endowment

The group’s total Mineral Resources now stand at approximately 850 million tonnes, containing over 12 million ounces of gold, alongside substantial quantities of copper and antimony. Notably, the Costerfield operation boasts a high-grade resource with 7.9 grams per tonne gold and 2.3% antimony, while the Boda-Kaiser project holds a vast 796 million tonnes at 0.33 grams per tonne gold and 0.18% copper. Ore Reserves across the group total nearly 24 million tonnes with 1.7 grams per tonne gold and 10.7 kilotonnes of antimony, underpinning Alkane’s production profile.

Strategic Capital Investment to Drive Growth

Managing Director Nic Earner emphasized the company’s commitment to expanding its resource base, particularly at Costerfield, where significant capital expenditure is underway. This investment aims to enhance mine life and production capacity, leveraging the high-grade nature of the ore body. Meanwhile, the Boda-Kaiser project remains a cornerstone for Alkane’s long-term growth strategy, with ongoing exploration and a recently completed scoping study outlining its economic potential.

Compliance and Transparency in Reporting

Alkane’s resource and reserve estimates comply fully with the Australasian JORC Code and Canadian NI 43-101 standards, ensuring transparency and reliability for investors. Competent Persons with relevant expertise have validated the data, and detailed technical reports are available for each asset. This rigorous approach supports investor confidence and aligns with best practices in mining disclosures.

Outlook and Market Positioning

With a diversified asset base spanning two continents and multiple commodities, Alkane is well positioned to navigate commodity price fluctuations and operational challenges. The company’s focus on near-mine exploration and resource conversion, combined with strategic capital deployment, suggests a pathway to sustained production growth. However, as with all mining ventures, outcomes remain sensitive to market conditions and execution risks.

Bottom Line?

Alkane’s FY25 resource update cements its foundation for growth, but execution and market dynamics will shape the next phase.

Questions in the middle?

  • How will ongoing capital expenditure at Costerfield translate into production and reserve growth?
  • What are the timelines and investment requirements for advancing the Boda-Kaiser project to production?
  • How might fluctuating gold, copper, and antimony prices impact Alkane’s financial outlook and project economics?