Solstice Minerals Ltd Drilling Program Expands to 6,300m at Nanadie

Solstice Minerals Restarts RC Drilling with Expanded 6,300m Program at Nanadie Copper-Gold Project

Solstice Minerals Limited (ASX: SLS) has announced the resumption of Phase 1 reverse circulation (RC) drilling at its 100%-owned Nanadie Copper-Gold Project in Western Australia. Following positive geological observations from initial drilling, the company has expanded its Solstice Minerals Ltd drilling program by 1,300m to a total of 6,300m, demonstrating confidence in the project's potential for resource expansion.

The Nanadie project represents a substantial strategic asset, hosting a shallow Inferred Mineral Resource Estimate of 40.4 million tonnes at 0.4% copper and 0.1g/t gold, containing 162,000 tonnes of copper and 130,000 ounces of gold. Located northwest of Sandstone in the established Murchison Goldfields, the deposit sits within a granted Mining Lease, providing clear pathway to development.

Strong Geological Foundation Drives Program Expansion

The decision to expand the drilling program stems from encouraging geological observations in the first 13 RC holes completed in Q4 2025. CEO Nick Castleden highlighted the significance of these findings:

Management Commentary

"Geological observations in the first 13 RC holes completed in Q4 2025 have provided strong impetus for continued drilling, with the Phase 1 program now expanded to a total of 6,300m."

The geological logging has confirmed consistency with historical drilling patterns, revealing:

• Widely mineralised host mafic intrusive package

• Flanking amphibolite zones (also mineralised in places)

• Younger granitoid rocks to the west

• Mineralised system remains open laterally in multiple directions and completely open at depth

This geological framework supports the company's thesis that the current 150m wide by 900m long disseminated sulphide system can be significantly expanded beyond its current boundaries.

Understanding Disseminated Sulphide Systems: A Primer for Investors

Disseminated sulphide mineralisation refers to copper-bearing minerals (primarily chalcopyrite) distributed throughout the host rock in a scattered, fine-grained pattern rather than concentrated in discrete veins. This style of mineralisation typically creates large-tonnage, lower-grade deposits that are well-suited to bulk mining methods.

At Nanadie, the mineralisation comprises disseminated and sulphide veinlet style chalcopyrite with pyrrhotite and pyrite. Approximately 90% of the current resource is fresh rock mineralisation below 40m depth, making it readily accessible for conventional mining techniques.

Furthermore, the Solstice Minerals Ltd drilling program has confirmed that no deleterious sulphide species are present, which simplifies potential processing requirements.

For investors, disseminated systems offer several advantages:

• Predictable geology enabling reliable resource estimation

• Large-scale potential for substantial resource bases

• Lower technical risk compared to complex vein systems

Historical Success Validates Expansion Strategy

The expansion strategy is supported by impressive historical drill intercepts that demonstrate both the scale and grade potential of the system:

These results underscore a critical point: previous drilling at the deposit rarely extended beyond the host mafic intrusive package, with much drilling starting and ending in mineralisation. This historical constraint presents a significant opportunity for Solstice to expand the resource through deeper and lateral extensions.

Strategic Exploration Targeting Multiple Growth Vectors

The Phase 1 program encompasses several strategic elements designed to maximise resource growth potential:

Resource Expansion Drilling:

• Intermediate drill traverses on 40m spacings between existing drill lines

• Deeper holes extending beyond previous drilling depths

• Increased drilling density in key areas within and below the current block model

Step-Out Exploration:

• Four reconnaissance holes completed 2km north of the current resource

• Similar mafic-dominant geological package identified below 30-60m of transported cover

• Robust geological and IP targets identified for future testing

The company has also completed initial reconnaissance drilling at depth south of the current resource, indicating systematic exploration of the broader mineralised system.

Financial Strength Enables Aggressive Exploration

Solstice maintains a strong financial position with approximately $14 million in cash (as at September 30, 2025) and no debt, providing operational flexibility to pursue aggressive exploration as results emerge. In addition, this cash position is particularly valuable in the current environment where many junior exploration companies face funding constraints.

The company's recent asset disposal success, including the $10 million sale of the Hobbes tenement in 2024, demonstrates management's ability to monetise assets and fund ongoing exploration activities.

Copper Market Tailwinds Support Strategic Focus

The timing of Solstice's expanded drilling program aligns favourably with strengthening copper market fundamentals. As CEO Nick Castleden noted:

Strategic Market Commentary

"The copper price is on the move, now above US$6/pound and continues to be viewed as having a positive long-term supply-demand outlook, as high-quality copper growth assets in established tier 1 mining jurisdictions and with investable approvals timelines become increasingly rare."

This market context enhances the strategic value of Nanadie as:

• A near-surface copper resource in an established mining jurisdiction

• Granted Mining Lease providing clear development pathway

• Substantial copper inventory of 162,000 tonnes already defined

• Significant expansion potential through systematic exploration

Catalysts and Timeline for Value Creation

Solstice has established a clear timeline for value-creating catalysts:

Immediate Term (Q1 2026):

• First assay results expected mid-late January 2026

• All 2025 samples currently at laboratory for processing

• Continued Phase 1 drilling through Q1 2026

Medium Term (2026):

• Systematic RC and diamond drilling if Phase 1 results support expansion

• Material increase to existing MRE as primary objective

• Testing of step-out geological and IP targets

• Continued gold exploration at the 1,650km² Yarri Project

The company anticipates steady activities and news flow through 2026, providing multiple opportunities for value recognition as exploration results demonstrate resource growth potential.

What Makes This Drilling Program Different?

However, this Solstice Minerals Ltd drilling program differs significantly from previous campaigns through its systematic approach and expanded scope. The program specifically targets areas that have historically been under-explored, focusing on deeper extensions and lateral growth zones.

Consequently, the expanded 6,300m program represents a comprehensive evaluation of the deposit's true potential rather than merely infill drilling.

Why Investors Should Follow Solstice Minerals

Solstice Minerals presents a compelling investment thesis built on multiple value drivers converging at an opportune time:

Strategic Asset Portfolio:

• 100% ownership of advanced copper-gold project with granted Mining Lease

• Substantial existing resource base of 40.4Mt providing development foundation

• Proven geological system with significant expansion potential

• Additional gold exploration assets in infrastructure-rich Eastern Goldfields

Operational Excellence:

• Strong management track record demonstrated through successful asset disposals

• Systematic exploration approach targeting highest-probability expansion zones

• Quality drilling contractors and laboratories ensuring reliable data generation

Market Positioning:

• Tier 1 mining jurisdiction with established regulatory framework

• Strong copper market fundamentals supporting asset valuations

• Financial flexibility to pursue aggressive exploration programs

• Multiple value catalysts expected throughout 2026

Key Investment Considerations

For instance, the current Solstice Minerals Ltd drilling program represents the most comprehensive exploration effort at Nanadie to date. The expanded scope and systematic approach suggest management's confidence in delivering material resource upgrades.

Furthermore, the combination of existing resource base, expansion potential, and strong financial position creates multiple pathways for value creation throughout 2026.

Key Investment Takeaway

Solstice Minerals has positioned itself as a compelling copper-gold exploration story with a substantial existing resource base and significant expansion potential. With strong financial backing, systematic exploration programs, and favourable market conditions for copper assets, the company represents an opportunity for investors seeking exposure to tier 1 jurisdiction copper development. The expanded drilling program and anticipated assay results in January 2026 provide near-term catalysts for value recognition.

Want to Know More About Solstice Minerals' Copper-Gold Opportunity?

With an expanded 6,300m drilling programme now underway and first assay results expected in January 2026, Solstice Minerals is positioning itself as a compelling investment opportunity in the copper-gold space. The company's systematic approach to expanding its substantial 40.4Mt resource base, combined with strong financials and multiple value catalysts ahead, presents an intriguing proposition for investors seeking exposure to tier 1 jurisdiction copper development. To explore Solstice Minerals' full investment potential and stay updated on their drilling progress at the Nanadie Copper-Gold Project, visit their official website for comprehensive company information, project details, and the latest investor updates.