Solstice Minerals Drills 840m Open Copper Strike, Wins Broker Buy

An ASX junior explorer has drilled a 1.3km mineralised strike to a downhole depth of 840.6 metres and still not closed it off, either at depth or along strike.

That result belongs to Solstice Minerals, whose shares have already climbed roughly 700% across 2026 as copper prices smash record after record.

The timing is not accidental. Copper on the London Metal Exchange hit an all-time high of US$14,850 per metric tonne in August 2026, and this week Bell Potter initiated coverage with a speculative buy and a A$3.25 price target, implying about 32% upside from the stock’s recent high of A$2.46. Assays on more than 30 additional holes remain pending.

This is an active, developing story rather than a finished one. What follows below sets out what the Nanadie drilling actually shows, what Bell Potter’s initiation adds to the picture, and how Solstice sits inside a broader ASX copper wave unfolding in September 2026. If you are watching Australian copper explorers in a record-price environment, this is the context you need to decide whether Solstice is worth tracking.

What Nanadie’s drilling results actually show

Start with the footprint. Drilling at the Nanadie copper-gold project has outlined a mineralised system running 1.3km along strike, with widths between 100 and 200 metres. That alone puts it in a different category from the narrow, single-hole hits that dominate most junior explorer announcements.

The grade and width come together in the project’s flagship intercept, hole NANRCD004.

NANRCD004 (combined RC and diamond): 629.1m at 0.50% copper and 0.17g/t gold.

A 629-metre intercept at half a percent copper is a high-volume result, and Solstice has framed it as evidence of Nanadie’s potential as a bulk-tonnage copper development target in the Tier-1 Western Australian Goldfields.

The depth extensions change the picture

The more striking number came from August 2026. Hole NANRCD005, Solstice’s deepest diamond hole to date, reached a final downhole depth of 840.6m and returned 722.3m at 0.44% copper and 0.13g/t gold (including unmineralised intervals). That intercept extended mineralisation more than 500m below the current resource boundary.

The supporting holes fill in the shape of the system:

• NANRCD004: 629.1m at 0.50% copper and 0.17g/t gold
• NANRCD005: 722.3m at 0.44% copper and 0.13g/t gold, to 840.6m depth
• NANRCD018: 148m at 0.77% copper and 0.20g/t gold from 201m
• NANRC044 (step-out RC): 43m at 0.59% copper and 0.21g/t gold

The current resource sits at a JORC-compliant Inferred estimate of 40.4Mt at 0.4% copper and 0.1g/t gold, or 162kt of contained copper and 130koz of contained gold, on a granted mining lease. A JORC Inferred resource is the lowest confidence classification, meaning geological continuity is estimated rather than closely defined.

The 40.4Mt figure carries an important qualifier: the Inferred classification in JORC resource classification sits at the lowest confidence tier, where geological continuity is estimated from limited sampling rather than closely spaced drilling, which is precisely why the pending assay batches carry so much weight for the resource’s trajectory.

Here is the part worth sitting with. At the time of reporting, assays were still pending on 14 additional diamond holes and more than 20 RC holes, and a Phase 2 RC program of roughly 8,000m is planned. With a 1.3km open strike, multi-hundred-metre widths, and that many holes still awaiting results, the 40.4Mt figure reads as a floor rather than a ceiling. If you are tracking this story, you are watching a system that has not yet declared its full size.

Bell Potter’s initiation thesis and what A$3.25 assumes

Bell Potter’s conclusion landed first: a speculative buy with a A$3.25 price target. Work backwards from that number and the reasoning becomes clearer.

The target implies roughly 32% upside from Solstice’s prevailing price of A$2.46, recorded as a 12-month high at 16:40 on 4 September 2026. By 7 September 2026, the stock was trading at A$2.71. Against a 2026 rally of about 700%, the initiation gave the story an institutional endorsement it had not previously carried.

The thesis rests less on grade alone and more on scale, tenure, and jurisdiction combined.

Bell Potter characterises Nanadie as a “genuinely large and still growing copper-gold system on granted mining tenure in a Tier-1 mining jurisdiction.”

That framing does a lot of work. A granted mining lease removes a layer of permitting risk, and a Tier-1 jurisdiction like the Western Australian Goldfields carries lower sovereign and operational risk than many global copper addresses. The broker expects further re-rating as exploration results and development studies arrive.

The word “speculative” matters. It tells you institutional analysts now view Nanadie as worth tracking on its own merits, not merely as a leveraged bet on the copper price. But it also signals that Bell Potter is explicitly pricing in the real possibility that results disappoint or timelines stretch. For you, the reader, the takeaway is that the 32% upside is grounded in exploration milestones that still have to be delivered, not in commodity optimism alone.

The 700% rally Solstice has delivered in 2026 is a reminder that the junior mining stock risk profile is asymmetric in both directions: the same liquidity characteristics and exploration-stage sensitivity that amplify gains on positive results can accelerate drawdowns when assay batches disappoint or commodity prices correct.

The copper market Nanadie’s discovery is landing into

The commodity backdrop is doing part of the heavy lifting here. On 17 August 2026, Grade A copper on the London Metal Exchange reached an all-time high of US$14,850 per metric tonne (673.585 cents per pound). The 2026 year-to-date average of US$13,235/t was up 39.39% on the same point in 2025.

The records were not confined to London:

• LME all-time high: US$14,850/t (673.585 cents/lb) on 17 August 2026
• COMEX intraday record: US$6.7270/lb on 26 August 2026
• Prior milestone: US$14,527.50/t on 29 January 2026

Record prices validate the logic of drilling Nanadie hard right now. But a project still at the Inferred resource stage carries real valuation exposure if prices normalise before development economics are locked in.

Why copper is where it is

The International Energy Agency (IEA) and Benchmark Minerals attribute the record pricing primarily to structural deficits. Demand is driven by the clean-energy transition, grid expansion, and electric vehicles, all colliding with supply constrained by years of under-investment in new mines, processing bottlenecks, tight concentrate availability, and disruptions to South American output.

That is the durable part of the story. The less durable part is cyclical: trading-oriented analysts note that spikes toward US$15,000/t also reflect speculative fund flows, interest-rate-cut positioning, and inflation hedging, which can push prices beyond fundamentals.

The structural side of the copper price story, the one built on clean-energy demand, grid expansion, and constrained mine supply, is examined in detail in analyses of copper price drivers in 2026, where the IEA’s deficit projections and Benchmark Minerals’ supply-chain modelling form the backbone of longer-range forecasts.

For you, the distinction is the whole game. The structural deficit is what makes a long-dated copper discovery worth developing. The cyclical overlay is what makes today’s headline price an unreliable guide to the price Nanadie would actually be built against.

How Nanadie fits into the September 2026 ASX copper wave

Solstice is not moving in isolation. Two other ASX-listed juniors help calibrate where Nanadie sits on the exploration-to-production spectrum.

Southern Hemisphere Mining (ASX: SHM) is advancing the Llahuin Copper-Gold-Moly Project in Chile, which hosts a JORC resource of 218Mt at 0.38% copper equivalent across three deposits. The company recently commenced Phase I diamond drilling at its Southern Porphyry deep copper target, under a joint venture with Mark Creasy’s FMR Resources.

QMines (ASX: QML) sits further down the development path in Queensland, advancing its Mt Chalmers copper-gold and Develin Creek copper-zinc deposits. Mt Chalmers has returned standout near-surface hits including 35m at 2.88% copper, while Develin Creek hosts a resource of roughly 4.13Mt.

QMines’ timeline shows what the road to production actually looks like:

• Definitive Feasibility Study (DFS) targeted mid-2026
• Environmental approvals in late 2026
• Construction in 2027
• Initial production by 2028

Read the three together and a pattern emerges. Juniors across multiple geographies and development stages are advancing large copper targets simultaneously, which tells you how record prices and the deficit narrative are redirecting exploration capital in mid-2026. Nanadie’s open-ended strike stands out even in that company, though its Inferred, pre-study status places it earlier on the risk curve than QMines.

The broader ASX copper investment landscape heading into the second half of 2026 shows record prices pulling exploration capital toward a wider set of juniors than at any point since the 2010-2011 commodity cycle, with tenure quality and jurisdiction increasingly separating the re-rating candidates from the momentum plays.

What Nanadie’s next milestones mean for how this story develops

The variables that will confirm or complicate Bell Potter’s thesis are specific, not vague. Three sequential milestones will decide how this plays out:

1. Pending assay release: More than 30 holes (14 diamond and over 20 RC) await results, each batch capable of shifting the resource outline in either direction.
2. Phase 2 RC program: Roughly 8,000m targeting open intercepts, step-out positions, and induced polarisation features that could extend the 1.3km strike.
3. Resource upgrade and economic scoping: Moving from Inferred to Indicated classification, plus metallurgical and economic studies, none of which carry a stated timeline in the available research.

The pending assay batches are the immediate catalyst, and they function as binary inflection points. Results that extend the strike or lift grade will accelerate exactly the re-rating Bell Potter anticipates.

Bell Potter expects Solstice to re-rate “upon the release of ongoing exploration results and subsequent project development studies.”

Results that disappoint, by contrast, will test whether the 700% 2026 rally ran ahead of the geology. For you, that is the framework worth holding onto: this is not a general copper narrative to follow on momentum, but a story with concrete checkpoints against which each new announcement can be measured.

This article is for informational purposes only and should not be considered financial advice. Investors should conduct their own research and consult with financial professionals before making investment decisions.

Past performance does not guarantee future results. Financial projections are subject to market conditions and various risk factors, and forward-looking statements are speculative and subject to change based on market developments and company performance.