Following the latest ASX announcement, West Cobar Metals Limited (ASX: WC1) has delivered further positive metallurgical results from its 100%-owned Bulla Park Copper-Antimony-Silver Project in New South Wales. The new findings support the potential for a simple and efficient processing route, generating both a copper-silver concentrate and a high-grade antimony product.
View the full announcement here.
Key Testwork Highlights
Metallurgical testwork, carried out by Core Resources, achieved impressive recoveries from flotation and leaching:
- 94.6% copper recovery
- 82.6% antimony recovery
- 84.1% silver recovery
- Precipitation of a high-grade 37% antimony sulphide product
These results support the ongoing development of a dual-product flowsheet capable of producing two marketable product streams. The precipitation of a high-purity antimony sulphide from leach liquor further confirms the viability of downstream separation using standard hydrometallurgical techniques.
Core’s Role in Project Development
As West Cobar’s metallurgical testwork partner, Core has played a pivotal role in developing the Bulla Park flowsheet. Using quartered HQ3 drill core from hole BPD09, the team has conducted flotation and leach testing to determine the most effective recovery pathways for copper, antimony and silver.
By continuously improving flotation and leaching conditions and exploring impurity management options, Core is helping shape a processing strategy that supports both technical efficiency and commercial value.
Looking Ahead
With recoveries demonstrating strong early-stage performance, West Cobar is well positioned to advance the Bulla Park Project into its next phase. The ability to produce both a copper-silver concentrate and a high-grade antimony sulphide product provides added flexibility and relevance in a market increasingly focused on critical minerals.
Core is proud to support West Cobar as the company progresses its metallurgical studies and continues to assess optimisation strategies for this promising asset.
Want to learn more about how Core supports projects like Bulla Park?
Visit our Metallurgical Testing Services page or contact us to discuss how we can support your next project.
