Solstice Minerals Limited (ASX:SLS): How Deep Copper Results Reframe Nanadie Exploration

Aditi Sarkar

11 November 2026 08:26 PM AEDT

Solstice Minerals Limited (ASX:SLS): How Deep Copper Results Reframe Nanadie Exploration

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Highlights

Solstice is extending copper-gold drilling beyond parts of the existing Nanadie resource model.
An existing Inferred estimate is 40.4 million tonnes at 0.4% copper and 0.1 g/t gold.
Recent deep intersections require geological modelling before any resource change can be confirmed.
Pending assays and further drilling will inform the timing and scope of a future resource update.

Solstice Minerals Limited (ASX:SLS) is an Australian copper and gold exploration company with its principal copper focus at the Nanadie Project in Western Australia's Murchison region. The company continued extensive drilling in 2026 to establish the size, grade distribution and continuity of copper-gold mineralisation outside its current resource boundaries. Its latest reported intercepts have reinforced the importance of deeper testing, although none automatically changes the project's formal resource estimate.

Nanadie Resource and Geological Setting

Nanadie has an existing JORC-compliant Inferred Mineral Resource Estimate of 40.4 million tonnes grading 0.4% copper and 0.1 grams per tonne gold, equivalent to approximately 162,000 tonnes of contained copper and 130,000 ounces of gold. Inferred is a category of geological confidence, not an ore reserve or a mine production forecast. The deposit occurs within a mineralised intrusive rock package that has been tested across several drilling campaigns.

Solstice Minerals Limited (ASX:SLS) also explores gold targets elsewhere in Western Australia, but Nanadie is the principal subject of its current copper drilling.

Deeper Drilling and Reported Intersections

Recent drilling reported 34.0 metres at 1.53% copper and 0.40 g/t gold from 625 metres in hole NANRCD002A, including 22.9 metres at 2.13% copper and 0.51 g/t gold. Hole NANRCD045 reported 43.0 metres at 1.16% copper and 0.32 g/t gold from 307 metres. These are drill-hole intervals: their true geometric widths have not been established in the supporting account.

Other results span several holes at different depths, providing additional evidence for copper-bearing intervals beyond parts of the existing estimate. Solstice Minerals Limited (ASX:SLS) must still establish whether higher-grade zones connect between holes and how they relate to the broader, lower-grade mineralised envelope. Drilling at depth is technically significant but can also increase the cost and complexity of any eventual Mining concept.

Cash Position and Exploration Capacity

The company's September 2026 financial position was described as approximately AUD 41 million in cash with no debt. That position provides capacity to continue exploration, but a cash balance does not guarantee that technical studies, approvals or construction will be fully financed.

Solstice Minerals Limited (ASX:SLS) has said substantial assays remain pending from diamond and reverse-circulation drilling. Any future economic assessment would need additional information on recoveries, mine design, Capital requirements and operating costs.

Resource Update and Execution Risks

The next phase centres on completing analyses from the current campaign and planning further holes where the geological model indicates uncertainty. A revised mineral resource would require independent estimation using a sufficiently coherent data set. Management's prospective 2027 drilling and resource work should therefore be understood as a plan, not an achieved increase in resource tonnage.

Solstice Minerals Limited (ASX:SLS) also faces the risk that deep intervals prove discontinuous or commercially difficult to access. The present observations contribute to exploration understanding, while the development significance remains to be established through further technical work.

Key Insights

Nanadie's 2026 results extend the company's understanding of copper-gold mineralisation beyond the existing Inferred estimate. Further assays and geological modelling are needed before any revised resource, mining method or economic outcome can be established.

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