Raptor Metals has validated a large-scale copper system at its Chester Project in Canada, delivering some of the broadest and highest-grade intercepts from its maiden diamond drilling program and revealing significant resource expansion potential.
- Maiden 19-hole drilling confirms extensive copper mineralisation
- Broad high-grade copper intersections in Copper Stringer Zone
- Only 700m of 2.5km strike tested, resource open in all directions
- Integration of drilling, EM surveys, and metallurgy underway
- Next drilling planned at Coyote to expand resource inventory
Maiden Drilling Validates Chester as a Major Copper System
Raptor Metals Ltd (ASX:RAP) has completed its inaugural 19-hole, 2,126-metre diamond drilling campaign at the Chester Copper Project in New Brunswick, Canada, confirming the project as a substantial copper-rich volcanogenic massive sulphide (VMS) system. The results include some of the broadest and highest-grade copper intersections from the 2026 program, notably within the Copper Stringer Zone, reinforcing Chester’s standing as a significant base metals asset.
The final assay results from drill holes CDH015 and CDH016 delivered standout intercepts such as 16.0 metres at 1.26% copper (Cu) from 62 metres, including a 5-metre interval at 2.25% Cu, and 14.07 metres at 1.04% Cu accompanied by 9.54 g/t silver (Ag). These broad zones of continuous copper mineralisation underpin the interpretation of Chester as a stacked VMS system with multiple mineralised horizons, a crucial geological validation following historical drilling.
Expanding the Mineralised Footprint Beyond Historical Limits
The maiden drilling program has systematically tested the Central, East, and Copper Stringer Zones, confirming mineralisation across all three. Importantly, only around 700 metres of the interpreted 2.5-kilometre mineralised strike length has been drilled to date, leaving the system open along strike and at depth. This limited testing suggests substantial upside for resource growth, as mineralisation remains open in all directions.
Managing Director Brett Wallace highlighted that the drilling not only validated the existing Mineral Resource Estimate of 6.685 million tonnes at 1.07% Cu but also identified compelling opportunities to extend mineralisation beyond the current resource boundaries. The program has improved understanding of the spatial relationships between copper stringer mineralisation, massive sulphide horizons, and polymetallic zones, setting the stage for refined geological modelling.
Integration of Drilling with Geophysics and Metallurgy to Guide Next Steps
Raptor is now focused on integrating the drilling results with recently completed downhole electromagnetic (EM) surveys, metallurgical test work, and historical core re-sampling to enhance the geological model. This holistic approach aims to support future resource growth targeting and an eventual Mineral Resource update. Metallurgical testing on three PQ drill holes completed during the program will provide critical data on ore processing characteristics.
The company also plans to commence its maiden drill program at the Coyote Project, another asset within the Bathurst Mining Camp, which offers near-term potential to add shallow, high-grade copper mineralisation to Raptor’s portfolio. This strategic expansion complements the ongoing work at Chester and broadens the company's exploration pipeline.
Chester’s Strategic Location in a Prolific Mining District
Situated within the Bathurst Mining Camp, a world-class VMS district that has produced over 475 million tonnes from more than 45 deposits, Chester benefits from established infrastructure and a rich geological setting. The project’s mineralisation occurs within dacitic volcanic rocks of the Clearwater Stream Formation and comprises massive, disseminated, and stringer sulphide mineralisation across its three principal zones.
The drilling campaign was executed using HQ diamond core, with rigorous sampling and quality control procedures overseen by qualified geologists. Assays were conducted at ISO-certified Actlabs Analytical laboratories, ensuring the reliability of the data underpinning Raptor’s geological interpretations.
The positive drilling outcomes build on earlier assay results that extended high-grade copper zones along strike, further confirming Chester as a significant copper asset with robust exploration upside. The company’s methodical approach to integrating geophysical, metallurgical, and historical datasets positions it well to capitalise on Chester’s potential.
Bottom Line?
Raptor’s maiden drilling at Chester confirms a large, high-grade copper system with significant room to grow, setting the stage for resource updates and new exploration at Coyote.
Questions in the middle?
- How will integration of EM survey data influence targeting in the next drilling phase?
- What are the expected timelines for updating the Mineral Resource Estimate at Chester?
- Can the upcoming Coyote drilling replicate Chester’s high-grade results to diversify Raptor’s copper inventory?