Great Boulder Resources Announces Excellent Gold Recovery Results
GREAT BOULDER RESOURCES LIMITED (GBR) Share Update January 2025 Tuesday 14th
Great Boulder Resources Reports Successful Gold Recovery at Side Well Project
Great Boulder Resources (ASX: GBR) has announced outstanding results from metallurgical testing at its Side Well Gold Project, achieving gold recoveries of up to 98.7%.
Instant Summary:
- Gold recoveries of up to 98.7% achieved at Mulga Bill.
- Low cyanide-soluble copper levels found in samples.
- Test results confirm Mulga Bill's suitability for conventional processing.
- Represents a de-risking milestone for the Side Well project.
Metallurgical Test Work
Great Boulder Resources has completed a series of metallurgical tests on samples from its Side Well Gold Project, specifically targeting the Mulga Bill deposit. The tests focused on gravity recovery and cyanide leach methods, aimed at assessing the efficiency of gold extraction from various mineralisation styles.
The results were highly promising, with gold recoveries reaching up to 98.7%. The tests also confirmed that the presence of copper, primarily in the form of chalcopyrite, does not significantly impact cyanide consumption or gold recovery rates.
Sample Analysis
Five distinct sample parcels were tested, representing a range of mineralisation styles from weathered material to fresh rock. These included samples with high copper content, up to 6,483ppm Cu, yet the tests showed low levels of cyanide-soluble copper, indicating minimal impact on the leaching process.
The high-grade oxide and fresh rock samples demonstrated significant gravity gold, with the Star-Cervelo oxide sample achieving an 82.5% gravity recovery rate. Overall, the results suggest that Mulga Bill can be processed using standard industry methods, similar to those employed by nearby gold mills.
Future Steps
Following these successful tests, Great Boulder plans to conduct further studies to optimize the metallurgical flowsheet. This will involve reagent optimization tests to refine cyanide concentration levels and explore blending strategies to manage ore types with higher copper content.
The successful test results are a significant de-risking milestone for the Side Well project, enhancing the project's viability and attractiveness to investors. The confirmation of efficient gold recovery and manageable cyanide consumption could positively influence Great Boulder's stock, as it suggests a clear path to processing and potential profitability.
Investor Reaction:
Analysts are likely to view these results favorably, as they address key concerns regarding the project's feasibility. The high recovery rates and low copper interference may boost investor confidence in Great Boulder's development plans.
Conclusion:
Investors should consider the positive implications of these results for Great Boulder Resources' future operations. The company's continued focus on optimizing its processes could lead to further value creation, making it a compelling opportunity in the gold mining sector.