Pleasingly, the latest results confirm that drill hole TLD005 has discovered multiple lenses of Cu mineralization – including two more important high-grade intersections – at much greater depth (over 400 meters deeper vertically than previously) and more extensive, ~130 meters further south, separate from any Cu mineralization at Tollu ever reported by Redstone (see Figures 2 and 3).
HIGHLIGHTS
- Testing confirms that diamond hole TLD005 has intersected additional high-grade copper (Cu) mineralization some 400 meters deeper and significantly further south (130 metres) of the Chatsworth mineralisation; isolated from all previous Cu intersections at Tollu
- In addition to previously reported results from September 2025, further analysis shows that borehole TLD005 also intersected significantly high-grade Cu at two other locations, much deeper in the borehole (see Figure 2), including:
- 1.8 m at 2.5% Cu from 912.4 m downhole; And
- 4 m at 1.3% Cu from 1,048 m downhole, inclusive
- 1.6 m at 2.7% Cu for 1,048.4 m
- Multiple lower grade Cu intersections were observed during TLD005, highlighting the potential extent and benefits of the Cu system at Tollu (see below and Appendix 2 for more information).
- Significantly, the geochemistry in TLD005, even at lower grades, indicates that cobalt (Co) is likely in the sulfide form, not always associated with Cu mineralization, and favors an underlying gabbro form.
- Potential association of Co sulphide mineralization in the gabbro underlying the Tollu Cu deposit is important to Redstone’s exploration strategy as it is potential evidence for a magmatic sulphide source from the Tollu Cu deposit and therefore increases the prospectivity of the entire project for Voisey’s Bay style magmatic Cu-Ni-Co-PGE mineral deposits such as that of the Nebo-Babel deposit world class, located 60 km west of Tollu.
- These results confirm the strong success of deep diamond hole TLD005, an addition to the previously announced (September 17, 2025) crossing of:
- 10 m at 1.37% Cu from 193 meters deep in the borehole, inclusive
- 4m at 2.37% Cu from 195 meters deep in the borehole
- 10 m at 1.37% Cu from 193 meters deep in the borehole, inclusive
Commenting on the latest exciting results from TLD005, Chairman Richard Homsany said:
“We are excited and very encouraged by the latest results from diamond hole TLD005, which highlight some of the most significant exploration progress in recent times at Redstone’s West Musgrave copper project.
TLD005 has dramatically extended the known boundaries of the Tollu Cu mineralization, intersecting high-grade Cu mineralization some 400 meters deeper (vertically) and 130 meters south, separate from all known Cu mineralizations in the area of the Tollu Cu deposit.
These intersections suggest that the Tollu Cu mineralization system is potentially more extensive and much deeper than previously appreciated; and analysis of the Co geochemistry suggests a potential magmatic source for the Co, also lending credence to a similar source for the Tollu Cu mineralization.
Importantly, there is no evidence of this new zone of deep and isolated Cu mineralization immediately above the surface, unlike the Tollu Cu deposit, where all historical drilling focused on Cu veins that often have surface outcrops.
This suggests that there is much more Cu mineralization to be discovered at Tollu.
We are now working on finalizing follow-up drilling plans for early 2026 and will report on further progress shortly.”
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