Alkane is pleased to report that it has updated the Mineral Resources and Ore Reserves estimates for its assets in Australia and Sweden and, in doing so, has prepared a JORC Code1 compliant Mineral Resources and Ore Reserves estimate for the Costerfield and Björkdal operations.
A Mineral Resources and Ore Reserves Statement (MROR Statement) for each asset is also available:
- NSW Resources and Reserves Statement FY25 ➥
- Costerfield Resources and Reserves Statement FY25 ➥
- Björkdal Resources and Reserves Statement FY25 ➥
A summary of the Mineral Resources and Ore Reserves estimates for Alkane’s assets as at 30 June 2025 is presented below. Complete details for each estimate, as required by the ASX Listing Rules and the JORC Code, are set out in the MROR Statements.
Group Mineral Resources2,3
| Location | Tonnage (kt) | Gold grade (g/t) | Copper grade (%) | Antimony grade (%) | Contained gold (koz) | Contained copper (Mt) | Contained antimony (kt) |
|---|---|---|---|---|---|---|---|
| Tomingley4 | 20,254 | 2.25 | 1,465 | ||||
| Boda-Kaiser | 796,000 | 0.33 | 0.18 | 8,280 | 1.46 | ||
| Costerfield | 1,700 | 7.9 | 2.3 | 431 | 39.4 | ||
| Björkdal | 32,055 | 1.91 | 1,967 | ||||
| Total | 850,009 | 0.45 | 12,143 | 1.46 | 39.4 |
Group Ore Reserves3
| Location | Tonnage (kt) | Gold grade (g/t) | Antimony grade (%) | Contained gold (koz) | Contained antimony (kt) |
|---|---|---|---|---|---|
| Tomingley | 10,362 | 1.9 | 620 | ||
| Costerfield | 537 | 8.7 | 2.0 | 150 | 10.7 |
| Björkdal | 13,048 | 1.3 | 543 | ||
| Total | 23,947 | 1.7 | 1,313 | 10.7 |
Alkane Managing Director, Nic Earner, said:
“Alkane’s consolidated resource and reserves show the strength of our business. We have three operating mines and a major project in Boda-Kaiser, giving us immediate production and a long term growth option. We have substantial capital expenditure occurring through the remainder of this financial year to continue to add to this resource base, particularly at Costerfield.”
- 2012 Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves (‘JORC Code’).
- Refer to the table in Annexure A for details on Measured, Indicated and Inferred Resources.
- Refer to ALK announcements titled ‘NSW Resources and Reserves Statement FY25’, ‘Costerfield Resources and Reserves Statement FY25’ and ‘Björkdal Resources and Reserves Statement FY25’ dated 15 October 2025 for complete details for each estimate.
- Includes Peak Hill.