White Cliff Minerals Ltd
White Cliff Minerals Confirms Copper Sulphides Across 1.8 km at Danvers South — Drilling Enters Major Untested EM Anomaly
White Cliff Minerals (ASX: WCN; OTCQB: WCMLF) has delivered a significant step forward in its 2026 exploration campaign at the Rae Copper Project in Nunavut, Canada. White Cliff Minerals Danvers South copper sulphides drilling results at Rae Copper Project represent a landmark moment, with new drilling confirming copper sulphide mineralisation extending over more than 1.8 kilometres of strike — doubling the footprint established during the 2025 drilling season.
Furthermore, the first hole drilled into a major, previously untested electromagnetic (EM) anomaly has returned the highest copper sulphide concentrations of the programme to date.
These are visual observations made in the field; assay results are pending from ALS Laboratories and are expected within four weeks. Nevertheless, the spatial extent of the mineralised system and the quality of what is being observed downhole are drawing serious attention to the scale of what may be developing along the Teshierpi Fault Zone.
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A Programme Delivering Above Expectations
The 2026 reverse circulation drilling campaign at Danvers has been characterised by strong operational execution. The field team achieved earlier-than-anticipated access to the main geophysical anomaly — a development that has accelerated the company's geological understanding of the system and improved overall programme effectiveness.
Key highlights from drilling to date include:
- Copper sulphides observed over more than 1.8 km of strike at Danvers South, potentially defining a material copper footprint within the Teshierpi Fault Zone
- The newly defined footprint is double the strike length established during 2025 drilling
- DAN26008 returned 55 metres of combined copper sulphide thickness, the highest of the programme, within a major EM anomaly
- DAN26006 returned 37 metres of copper sulphide thickness, confirming the near-surface extension of mineralisation at 177 metres vertical depth
- DAN26008 is located 583 metres along strike to the northeast of DAN26005, with both holes intersecting broad chalcocite-bearing intervals — demonstrating meaningful continuity across wide spacing
- DAN26008 contains up to 3% observed chalcocite within sulphide veins, with chalcocite-bornite-chalcopyrite mineralisation observed over two main intervals
- DAN26007, targeting an isolated EM anomaly away from the main structure, returned no copper sulphides — reinforcing the targeting value of the Teshierpi Fault Zone
Drilling Results at a Glance
| Drill Hole | Key Observation | Combined Cu Sulphide Thickness | Notable Feature |
|---|---|---|---|
| DAN26006 | Near-surface extension of sulphides confirmed | 37 m | Entrance into Teshierpi Fault Zone; steeply dipping SE |
| DAN26007 | No copper sulphides | — | Isolated EM anomaly, away from main structure |
| DAN26008 | Highest Cu sulphide concentrations of programme | 55 m | First hole into major untested EM conductor; up to 3% chalcocite in veins |
Managing Director Troy Whittaker commented: "2026 drilling to date has already delivered exceptional results revealing a new deposit at Danvers South with visual copper identified over approximately 1,800 metres. Operationally, the team has performed strongly, with efficient in-field logistics enabling earlier-than-anticipated access to the main geophysical anomaly. This has accelerated our understanding of the system and improved overall programme effectiveness. The distance of over 580 metres between drill holes DAN26005 and DAN26008 along the fault zone, both of which intersected broad chalcocite-bearing intervals, underscores the emerging scale and continuity of the system."
The Significance of DAN26008 — First Into the Main Anomaly
Of all the results reported, DAN26008 warrants the closest attention from investors. This hole was the first drill test of a multi-kilometre scale EM conductor that had never previously been tested, and it delivered a range of compelling findings.
Specifically, the hole returned chalcocite-bornite-chalcopyrite mineralisation over two main intervals with a combined thickness of 55 metres, along with up to 3% observed chalcocite within sulphide veins — the highest concentrations observed in the entire 2026 programme.
In addition, the results show spatial association with previously identified mineralised flow-top basalts from the 2025 season, which returned surface grab samples grading more than 37% copper and 72.9 g/t silver (sample X961221, located approximately 450 metres to the north). The hole also sits within a major EM anomaly that continues to the northeast and remains substantially untested.
The proximity of those high-grade surface samples to significant sulphide intervals encountered at depth provides strong support for the geological model — specifically, the presence of feeder structures adjacent to mineralised flow tops. Step-out drilling to the northeast is now underway, testing further along the conductivity anomaly.
Understanding Sediment-Hosted Copper Deposits: The Geological Model at Rae
Sediment-hosted copper deposits represent one of the world's most important sources of copper, hosting approximately 20% of global copper resources. These deposits form when copper-bearing fluids move through sedimentary rocks, precipitating copper sulphides along favourable geological structures or within permeable rock units.
What Are the Key Characteristics of These Systems?
Key characteristics of sediment-hosted copper systems:
- Structural control: Mineralisation commonly follows major fault zones or fracture systems that act as fluid conduits
- Mineral zonation: Typical progression from high-grade chalcocite and bornite near source areas to lower-grade chalcopyrite at deposit margins
- Large scale potential: Individual deposits can contain hundreds of millions to billions of tonnes of ore
- Processing advantages: Copper sulphides generally respond well to conventional flotation methods
Why Does This Matter for White Cliff Minerals?
The Rae Copper Project displays many hallmarks of a large sediment-hosted copper system. The Teshierpi Fault Zone acts as the primary structural control, while the observed mineral zonation from chalcocite-dominant veins to broader chalcopyrite zones mirrors patterns seen in world-class deposits such as those in the Central African Copperbelt.
Consequently, the company's recently announced metallurgical testwork demonstrated up to 95.4% copper recovery via conventional flotation, supporting the processing amenability typical of sediment-hosted deposits.
Glossary of Key Terms
| Term | Meaning |
|---|---|
| Chalcocite (Cc) | High-grade copper sulphide mineral (~79.8% Cu); primary ore mineral at Danvers |
| Bornite (Bn) | Copper-iron sulphide (~63% Cu); often associated with chalcocite in enriched zones |
| Chalcopyrite (Cp) | Common copper-iron sulphide (~34.5% Cu); typically lower grade than chalcocite |
| EM Anomaly | Electromagnetic geophysical anomaly indicating a conductive body underground, used to target sulphide mineralisation |
| HeliTEM | Helicopter-borne time-domain electromagnetic survey used to map conductivity |
| Teshierpi Fault Zone | The major NE-SW trending structural corridor hosting copper mineralisation at Danvers |
| RC Drilling | Reverse circulation drilling; chips returned to surface for sampling and geological logging |
| Strike Length | The horizontal extent of a mineralised zone measured along its length |
The Geological Picture Is Coming Into Focus
One of the most important aspects of this announcement is what it says about the structural understanding of the Teshierpi Fault Zone as a copper-bearing system. Several key observations reinforce this view.
The fault zone's position is now well understood through drilling, with new mineralised zones remaining open along strike and completely untested at depth. Continuity between widely spaced holes — most notably between DAN26005 and DAN26008 at 583 metres spacing — indicates a well-endowed structure with strong lateral persistence.
Furthermore, the 2025 HeliTEM geophysical survey identified multiple areas along the Teshierpi Fault Zone with geophysical signatures similar to the known Danvers deposit, with areas of higher conductivity and greater strike lengths than the known mineralisation earmarked for testing in the 2026 programme.
DAN26008's chalcocite-bornite-chalcopyrite mineralisation is described as being spatially associated with mineralised flow-top basalts from 2025, which returned surface samples grading more than 37% copper — a grade level that speaks to the richness of source material in proximity to the drill target. The combination of strong EM targeting, high-grade surface expressions, and now broad intersections of chalcocite-dominant mineralisation at depth paints a coherent picture of a large, structurally controlled copper system.
Upcoming Catalysts and Next Steps
| Upcoming Activity | Expected Timing | Significance |
|---|---|---|
| Assay results from DAN26006 and DAN26008 | Within ~4 weeks | Will confirm or upgrade visual copper sulphide observations with quantitative grades |
| Step-out drilling to the northeast along EM anomaly | Underway now | Testing extent of multi-kilometre scale conductor; potential to extend strike further |
| Ongoing drilling along the Teshierpi Fault Zone | 2026 programme | Further definition of Danvers South footprint; testing depth extensions |
| Deeper testing of mineralised zones | Future programme | New zones remain open at depth and completely untested below current drill coverage |
The company notes it is fully funded to deliver on its 2026 drilling objectives, supported by a strong cash balance, prepaid drilling, incoming funds from the sale of Great Bear, and ongoing option conversions.
The Investment Thesis: Scale, Grade, and a System Still Opening Up
White Cliff Minerals is building an increasingly compelling case that the Rae Copper Project hosts a large-scale, high-grade copper system. The key pillars of that case are strengthening with each drill result.
1. Growing Scale
The mineralised strike at Danvers South has now extended to over 1.8 kilometres — double the footprint from 2025 — and continues to grow. The system remains open along strike to both the northeast and southwest, and is completely untested at depth across the newly defined zones.
2. High-Grade Surface and Drill Results
The Rae Project has consistently delivered exceptional surface grades, with rock chip samples returning results such as 42.6% Cu, 39.5% Cu at the Phoenix prospect and up to 37.4% Cu and 72.9 g/t Ag at flow-top exposures adjacent to current drilling. Previous drilling at Danvers returned intercepts including 175 m @ 2.5% Cu & 8.66 g/t Ag, 90 m @ 4.0% Cu & 7.5 g/t Ag, and 58 m @ 3.08% Cu & 13.3 g/t Ag.
3. Excellent Metallurgical Characteristics
Recent metallurgical testwork on drill core from DAN25008 demonstrated up to 95.4% copper recovery and 93.3% silver recovery via conventional flotation, producing concentrates of approximately 40% Cu and 150 g/t Ag. No deleterious elements were identified, which directly supports the commercial potential of the mineralisation being intersected.
4. Geophysics-Guided Targeting Working as Intended
The 2025 HeliTEM survey is proving highly effective as a targeting tool. DAN26008's location within a major EM conductor and its strong chalcocite results validate the methodology — and a substantial portion of the identified anomalies along the Teshierpi Fault Zone remain untested, representing a significant exploration pipeline.
5. Historic Context Providing a Foundation
A historic estimate at the Danvers deposit of 4.16 million tons at 2.96% copper (non-JORC compliant, historic estimate only) provides geological context for the project's endowment, while current drilling is demonstrating that the known deposit represents only a fraction of the prospective fault zone system.
6. Fully Funded Exploration Programme
The company is well positioned to execute its 2026 objectives, with funding supported by cash, prepaid drilling, proceeds from the Great Bear asset sale, and option conversions.
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Why Investors Should Keep Watching White Cliff Minerals
White Cliff Minerals is operating in one of the most geologically prospective copper terranes in Canada, methodically building a geological case for a large-scale copper discovery at the Rae Project. The White Cliff Minerals Danvers South copper sulphides drilling results at Rae Copper Project have already delivered a defined mineralised footprint of over 1.8 kilometres — and the most important drill hole of the programme so far (DAN26008) has just entered the main geophysical anomaly, returning the highest copper sulphide concentrations observed to date.
With assay results due within four weeks, step-out drilling actively underway to the northeast, and a system that remains open along strike and at depth, there is a meaningful pipeline of near-term catalysts that could materially advance the investment case.
Key Takeaway:
White Cliff Minerals has positioned itself as a serious copper explorer in Nunavut, Canada, with visual copper sulphide mineralisation now confirmed over 1.8 km of strike at Danvers South and the first drill hole into the project's largest untested EM anomaly returning the highest chalcocite concentrations of the 2026 programme. With assay results expected within four weeks, active step-out drilling underway, and a system that remains open in multiple directions, investors should watch closely as the scale of the Teshierpi Fault Zone copper system continues to be defined.
Ready to Follow White Cliff Minerals as It Defines the Scale of Its Rae Copper Discovery?
With copper sulphide mineralisation now confirmed over 1.8 kilometres of strike at Danvers South, the first drill hole into the project's largest untested EM anomaly delivering the highest chalcocite concentrations of the 2026 programme, and assay results due within four weeks, White Cliff Minerals is approaching a series of potentially significant milestones. To learn more about the Rae Copper Project, the Teshierpi Fault Zone copper system, and the company's broader exploration pipeline, visit the official White Cliff Minerals website at wcminerals.com.au.
