Alkane Resources Limited (ASX: ALK) has released fresh exploration results from its Costerfield Operation in central Victoria. The update centres on the True Blue deposit, sitting 2 kilometres west of the Company’s active underground workings.
Figure 1: Alkane Resources logo [Courtesy: Alkane Resources]
This news adds real weight to the broader Alkane Resources Australia growth story. Investors watching Alkane Resources ASX stock forecast Australia commentary now have new drilling data to consider.
True Blue Drilling Delivers High-Grade Hits
Alkane confirmed on 06 Jul 2026 that 33 new holes have been drilled since its previous update. The Company targeted the Freeman veining, and the results support the wider Costerfield True Blue discovery Australia narrative.
Figure 2: Costerfield tenement map showing the True Blue deposit corridor [Courtesy: Alkane Resources]
The infill drilling focused on the upper portion of the deposit. It sharpened the geological model and revealed extra structural complexity within the system.
True Blue Assay Highlights
- TB055 returned 57.6g/t gold and 25.4% antimony over 0.25m (ETW 0.17m)
- TB057 returned 20.9g/t gold and 19.5% antimony over 0.31m (ETW 0.22m)
- TB080 returned 4.3g/t gold and 6.4% antimony over 0.8m (ETW 0.63m)
- TB065 returned 30.1g/t gold and 14.8% antimony over 0.27m (ETW 0.17m)
- TB084 returned 84.1g/t gold and 15.4% antimony over 0.48m (ETW 0.36m)
- TB053 returned 17.9g/t gold and 1.7% antimony over 3.2m (ETW 1.4m)
Figure 3: Drill core from hole TB055 showing stibnite-rich mineralisation [Courtesy: Alkane Resources]
Figure 4: Core interval from TB084 showing the highest-grade zone drilled [Courtesy: Alkane Resources]
Assay Table Summary
| Drill Hole | Vein | Au (g/t) | Sb (%) | Interval (m) |
|---|---|---|---|---|
| TB055 | Freeman (700) | 57.6 | 25.4 | 0.25 |
| TB057 | Freeman (700) | 20.9 | 19.5 | 0.31 |
| TB080 | Freeman (700) | 4.3 | 6.4 | 0.80 |
| TB065 | Freeman (700) | 30.1 | 14.8 | 0.27 |
| TB084 | 702 splay | 84.1 | 15.4 | 0.48 |
| TB053 | 705 vein | 17.9 | 1.7 | 3.20 |
Nic Earner, CEO and Managing Director of Alkane, praised the outcomes. He said the infill drilling gives the Company confidence to proceed with True Blue development plans.
Why the Discovery Matters for Investors
This result matters because it strengthens the case for future resource growth in Victoria. The Costerfield True Blue discovery Australia update points to a more complex, and potentially richer, vein system than first modelled.
Gold and antimony together create a rare commercial pairing. Antimony demand has surged globally due to defence and battery applications, adding strategic value to this Project.
Deposit Geology at Costerfield
True Blue is located on the western side of the Costerfield Dome. The system is hosted within Silurian marine siltstones that correlate with the nearby Youle and Augusta deposits.
Figure 5: Cross section of the True Blue vein system at Costerfield [Courtesy: Alkane Resources]
The dominant structure is called the Freeman Vein, carrying the Costerfield resource code 700. Nearby veins, named 702, 705, 710 and 720, sit close by and add further upside potential.
Structural Boundaries and Vein Complexity
The Wombat Fault caps the mineralised system from above. The Komodo Fault forms the footwall boundary, with displacement estimated at roughly 1,000 metres if restored to its original position.
Recent drilling resolved the Freeman Vein into a sheeted series of vertical veins. This structural picture resembles the nearby Kendal deposit rather than the shear-hosted style seen at Brunswick.
Figure 6: Plan view of True Blue drill traces and vein positions [Courtesy: Alkane Resources]
About Alkane Resources
Alkane is an Australian gold and antimony producer with 3 mines in operation. These include Tomingley in New South Wales, Costerfield in Victoria and Björkdal in Sweden.
The Company also owns the large Boda-Kaiser gold-copper porphyry Project located in Central West New South Wales. Alkane continues to explore the surrounding Northern Molong Porphyry Project for further growth.
Figure 7: Alkane Resources operating assets and project locations across Australia and Sweden [Courtesy: Alkane Resources]
Looking at the Alkane Resources ASX stock forecast Australia outlook, this is a diversified asset base that provides useful context. Find out more about how Victoria gold miners are shaping the current exploration cycle.
Share Price and Market Snapshot
- Last price: A$1.45 per share
- Market capitalisation: A$1.96 billion
- 52-week range: A$0.640 to A$1.890 per share
Figure 8: Alkane Resources (ASX: ALK) share price chart [Courtesy: ASX]
Alkane Resources (ASX: ALK) shares continue to draw attention amid this exploration news. This ASX announcement, ASX mining sector disclosure, sits within a strong recent trading range.
Industry Outlook
Gold and antimony markets both remain tightly linked to global supply security concerns. Western countries are still seeking non-Chinese sources of antimony for defence and technology applications.
This dynamic supports continued interest in Alkane Resources Australia growth prospects. Victoria’s gold-antimony corridor is increasingly viewed as strategically significant for future supply.
Future Direction and Growth Impact
Alkane plans further drilling through FY26-27 to test extensions around True Blue. The Company has identified four separate growth directions worth pursuing further.
Impact on Resource Expansion
Soil sampling suggests the True Blue anomaly may extend several hundred metres further north. Historical intercepts south of the resource, including from hole TB022, also point toward additional mineralised repetitions.
Impact on Regional Exploration Strategy
The Komodo Fault may link True Blue with the nearby West Costerfield prospect, roughly 800 metres east. Alkane sees this structural pathway as a high priority for future regional exploration.
An updated True Blue resource estimate will form part of Alkane’s upcoming Resource and Reserves Statement. This ASX announcement will likely shape near-term investor sentiment.
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FAQs
Q1. What did Alkane Resources announce on 06 Jul 2026?
Ans. Alkane announced new high-grade drilling results from the True Blue deposit at Costerfield.
Q2. Where is the True Blue deposit located?
Ans. It sits 2 kilometres west of Alkane’s active Costerfield underground workings in Victoria.
Q3. What makes this discovery significant?
Ans. The results confirm high-grade gold and antimony, supporting future resource growth.
Q4. What is Alkane’s next step for True Blue?
Ans. Alkane will release an updated resource as part of its upcoming Reserves Statement.
Disclaimer
This article is meant only for informational purposes. If you are an investor watching Alkane Resources Limited closely, all data published in this content is sourced from ASX announcements and external sources. Kindly verify all information related to share price and market data. Any investment should be made at the investor’s own risk. Colitco does not hold any position in the above-mentioned Company.
Source
- https://www.alkres.com
- https://www.marketindex.com.au/data-api/api/v1/announcements/XASX:ALK:6A1332539/pdf/inline/costerfield-true-blue-exploration-update
- https://www.asx.com.au/markets/company/ALK
Elizabeth Jones is a finance and mining content specialist with over 10 years of experience creating clear, SEO-driven content across fintech, investing, banking, insurance, cryptocurrency, and resource markets. She transforms complex financial data and industry trends into engaging, reader-focused articles that improve understanding and audience engagement.
