Rokeby Resources Uncovers High-Grade Silver and Copper at MaCauley Creek
Rokeby Resources has reported impressive high-grade silver and copper assay results from its MaCauley Creek Project in northern Queensland, confirming historical mineralisation and unveiling new promising prospects.
- High-grade silver up to 1,204 g/t and copper up to 5.37% confirmed
- New prospects Pinnacles and Copper Cap identified with anomalous mineralisation
- 84 rock chip samples collected and analysed in November 2025
- Plans for detailed mapping, soil sampling, and geophysical surveys underway
- Project located 150km west of Townsville in a known mineralised belt
Exploration Update from MaCauley Creek
Rokeby Resources Limited (ASX, RKB) has announced significant assay results from its recent fieldwork at the MaCauley Creek Project in northern Queensland. The company collected 84 rock chip samples during a November 2025 program aimed at validating historical mineralisation and exploring new targets within its 90%-owned tenements.
The results confirm exceptionally high-grade silver and copper mineralisation at several key prospects, including the Central, Wallaroo, and Mt Brown areas. Notably, samples from the Central prospect returned silver grades as high as 1,204 grams per tonne and copper concentrations up to 4.77%, underscoring the project's potential.
New Prospects Expand the Project's Footprint
Beyond confirming known mineralised zones, Rokeby identified new prospects such as Pinnacles and Copper Cap. Although these new areas returned lower grades compared to Central, their anomalous silver, copper, lead, and zinc values suggest a different style of mineralisation and warrant further investigation. The Copper Cap prospect, for example, yielded samples with up to 275 g/t silver and 5.37% copper, highlighting its potential as a significant target.
These discoveries expand the geological understanding of the MaCauley Creek area, which sits within the Townsville–Mornington Island Igneous Belt, a region recognised for intrusion-related and skarn-style mineral systems. The project covers a broad corridor of granite-hosted structures with historical copper and silver workings dating back to the early 1900s.
Next Steps in Exploration
Rokeby's CEO, Trevor Benson, emphasised the encouraging nature of the results and the company's commitment to advancing exploration. Planned activities include detailed regional geological mapping, soil geochemical sampling, structural mapping to understand controls on mineralisation, and geophysical surveys to refine drill targets. These steps aim to build a comprehensive geological model and identify high-priority zones for future drilling.
The company’s methodical approach, including rigorous sampling protocols and quality assurance measures, ensures the reliability of the assay data. While no drilling results are included in this announcement, the rock chip assays provide a strong foundation for targeted follow-up work.
Strategic Significance
Located approximately 150 kilometres west of Townsville, the MaCauley Creek Project benefits from proximity to existing infrastructure and a well-established mining district. The high-grade surface mineralisation and newly identified prospects enhance Rokeby’s exploration portfolio and could underpin future resource growth. The company’s ongoing work will be closely watched by investors seeking exposure to base metals and precious metals exploration in Queensland.
Bottom Line?
Rokeby’s latest assays at MaCauley Creek set the stage for a focused exploration push that could unlock a new high-grade copper-silver province.
Questions in the middle?
- Will upcoming drilling confirm the extent and continuity of the high-grade mineralisation?
- How will the new prospects like Pinnacles and Copper Cap influence the project’s overall resource potential?
- What timeline is Rokeby targeting for advancing from exploration to resource definition?
