Critical bets big with battery and gold play
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Murray Region
Critical Resources isn’t just playing the explorer game anymore; is busy rewriting the rules of the energy conversion value chain. While most juniors are content to pursue a single land anomaly, the ASX mining student has spent the past year quietly building a “triple threat” portfolio spanning next-generation battery technology in the US, district-scale lithium in Canada and high-grade gold in New Zealand.
The change began five years ago with the acquisition of the Mavis Lake lithium project; This marked a deliberate move away from the company’s roots as a base metal explorer, anchored by its Halls Peak polymetallic asset in NSW and the copper field in Oman.
From then on, the company began to expand its horizons, steadily positioning itself in the field of battery metals. But the real acceleration came with the appointment of Tim Wither last October, who wasted little time in reshaping the company’s growth strategy.
Under his watch, Critical immediately expanded its growth strategy by acquiring a portfolio of gold and antimony in the Otago region of New Zealand. It has also gone well beyond traditional mineral exploration, securing an exclusive 12-month option to evaluate and potentially license innovative solid-state battery technologies from the US.
‘The market opportunity here is huge.’
Critical Minerals managing director Tim Wither
Wither has serious work in the field of small-scale exploration. He most recently ran ASX-listed Maximus Resources as managing director before it was acquired by Astral Resources in a $31 million off-market takeover 12 months ago.
In a market hungry for both “safe haven” metals and “blue sky” technology, Critical’s strategy appears to bridge the gap between raw materials and end products with a range of opportunities that could enable it to evolve from microcap explorer into a major vertically integrated energy technology player.
The crown jewel of Critical’s technology arm is its Amorphous Solid State Electrolyte (ASE) program. In a move that sent ripples through the battery technology space last week, the company performed an explosive lab validation, effectively closing the door on one of the industry’s biggest hurdles: interface stability.
For the uninitiated, the “Holy Grail” of energy storage is the solid-state cell. The technology promises to make electric vehicles safer, lighter and able to charge in minutes rather than hours.
By eliminating the flammable liquid electrolytes found in current lithium-ion batteries, solid-state technology eliminates the risk of fire while packing a significantly higher energy density. But the interface is a problem that has baffled the world’s largest automakers for a decade.
Crystalline electrolytes are hard and prone to “dendrite” short circuits, tiny lithium needles that puncture the battery and cause failure. Critical’s simple solution is to switch to an amorphous structure.
Unlike crystal structures, where the atoms are arranged in a neat, ordered lattice, the amorphous material resembles a pile of marble. Although the atoms are still solid, they are arranged in a random, chaotic manner, with no repeating pattern.
As a result, the structure becomes more flexible and better contact with lithium metal is achieved. This also means that the battery exhibits less stress and cracking at the interface and prevents dendrite formation, providing a smoother ride for lithium-ion movement.
Working with the heavyweight South Dakota School of Mines and Technology, the company’s latest tests confirmed that the ASE interface remained stable at room temperature for more than 1,200 hours.
In the risky world of battery R&D, this isn’t just a data point, it’s a marathon. While standard electrolytes fail under the stress of lithium-metal contact, Critical’s modified ASE maintained a stable voltage profile and proved capable of handling the lithium-metal interface without the usual drama of degradation.
Its technical specifications are equally impressive. Conductivity reached a remarkable rate of 3.2 millisiemens per centimeter at room temperature, along with a low activation energy of 0.27 electron volts. In short, lithium ions were able to easily pass through the battery even under ambient conditions, eliminating the energy-intensive heating systems required by competing solid-state designs.
Critical Minerals managing director Tim Wither said: “This is about reducing business risk. The market opportunity here is huge. “We’re looking at a future of drones that fly longer, mobile robots with more uptime, and data centers that don’t need aircraft carrier-sized cooling systems.”
By moving from theoretical feasibility to lab-validated performance, the company has effectively moved battery technology into the “meaningful” column for punters looking for the next Tesla-scale breakthrough.
While battery technology provides the “blue sky” advantage, the company has its feet firmly planted in the spodumene-rich soil of Ontario, Canada. The 400-square-kilometer flagship Mavis Lake lithium project is rapidly evolving from a promising project to a regional-scale opportunity that could feed the hungry North American EV supply chain.
Mavis Lake currently hosts a very solid JORC compliant resource of eight million tonnes containing 1.07 per cent lithium oxide. With little time to spare, the company moved to a high-impact 2026 exploration strategy designed to unlock “region-scale” potential across its northern prospects and prove its exploration target of 18 to 29 million tonnes grading 0.8 to 1.2 percent lithium oxide.
Recent incremental drilling has absolutely nailed the brief. One hole returned a massive 74.4 meters of intercept at 1.18 percent lithium oxide; this included a high-grade core of 32.9 meters at 1.81 percent.
A second hole returned 50.2 meters with 1.28 percent lithium oxide, while a third hole returned 55 meters with a 0.95 percent lithium grade, including 25.85 meters with a sweet 1.39 percent.
The 2026 campaign also focuses on some of the company’s other high-priority lithium targets, including the Gullwing and Tot prospects, 5 km northeast of the Lake Mavis core field resource. Together, these pegmatites form a trend exceeding 8 km.
Gullwing is a standout game, with mapped widths of up to 80m, strike lengths of 500m and analysis of surface rock fragmentation reaching an eye-watering 6.78 per cent lithium oxide levels. If proven, satellite possibilities like Gullwing could offer the company significant operational flexibility as feed for a central facility.
Lake Mavis, in particular, is located at the sweet spot of Ontario’s emerging lithium hub, right next to the Trans-Canada Highway, with established rail connections and supported by abundant clean hydropower.
The path to low-cost, high-quality feedstock is becoming clearer by the day, with metallurgical testing already showing 87 percent spodumene recovery and a 30 percent increase in concentrate grade to 6.4 percent lithium. As the lithium market heads into its projected recovery in 2026, the company appears to have a winning hand in one of the world’s most stable mining regions.
Elsewhere, Critical has moved aggressively into the “yellow metal” with a high-impact portfolio in New Zealand’s fabled gold fields. The company has acquired a massive 1,795 square kilometers across four projects in the Otago region and one project in the Reefton goldfields, which has historically produced more than 15 million ounces of gold.
Cap Burn is making headlines after the company completed a 750-meter, 11-hole reverse circulation (RC) drilling program at its project in early 2026. Just 11 kilometers from Oceania Gold’s massive Macraes mine, Cap Burn is located in the same structural corridor as the 10 million-ounce producer. Analysis results from the drilling conducted on the 1 km strike of the Cap Burn fault structure, which targets a large arsenic soil anomaly, are expected to be received in early April. These are classic features of a major orogenic gold system.
The company’s other projects in the Otago region include Lammerlaw, where gold and tungsten trends are being mapped, and Silver Peaks, which hosts several large-scale gold and antimony structures with district-scale potential. Finally, Critical’s Tokomairiro project encompasses a historic gold field hosting multiple reef systems where high-grade rock samples weigh up to 135 g/t gold.
Meanwhile, the company’s northernmost gold project, Kroisos, is located in the Reefton gold fields at the top end of the South Island. Rock clast sampling returned high-grade gold and antimony results and highlighted tungsten-rich grisen systems.
Given that antimony is now identified as a critical mineral and is experiencing major price increases amid global supply shortages, this “pathfinder” element is likely to add a lucrative multi-commodity layer to Critical’s gold story.
This gold strategy is all about “portfolio depth”. While the market awaits Cap Burn RC drilling results expected in early April, ongoing work at Lammerlaw, Silver Peaks, Tokomairiro and Croesus provides an exploration option that keeps the news flow steady.
The company appears to be taking a capital-disciplined approach, using low-cost field programs to quickly screen targets before embarking on major drilling.
Critical is a rare species in the junior mining industry. It has blue-sky technology to capture the imagination of the Silicon Valley set, lithium scale to attract North American battery makers, and high-grade gold to provide a solid base of value in an uncertain global economy.
As the company moves towards full cell integration trials for its battery technology, it also plans to expand its resource at Lake Mavis and begin drilling in New Zealand gold fields. The results-rich 2026 roadmap looks well and truly set.
For bettors looking for a different play on “crit” in Critical Resources, the story may be just beginning.
Is your ASX-listed company doing something interesting? Contact: mattbirney@bullsnbears.com.au
