Green Technology Metals (ASX:GT1) strengthens Seymour Project with major rubidium resource

Green Technology Metals (ASX:GT1) has announced a major development at its Seymour Project in Ontario, Canada, with the release of a maiden Rubidium Mineral Resource.

Hosted within the same pegmatite system as the company’s lithium resource at North Aubry, the Rubidium discovery has the potential to transform material previously considered waste into a valuable by product stream.

With Rubidium recognised as a critical mineral by both the United States and Japan, and used in applications spanning advanced electronics, aerospace, quantum computing and defence, GT1’s vertically integrated strategy could now offer exposure to multiple high-value markets.

Managing Director Cameron Henry answers key investor questions on the opportunity, what it means for the company, and how it will be progressed.

What is the strategic significance of the newly announced Rubidium resource at Seymour?

The addition of Rubidium has the potential to enhance the value and versatility of the Seymour Project.

The defined resource totals 8.3 million tonnes at 0.27% Rb₂O, with a high-grade portion of 3.4 million tonnes at 0.40% Rb₂O.

This positions Seymour among the most advanced Rubidium projects globally, not just in terms of scale and grade, but also in classification confidence.

What makes this particularly valuable is the opportunity to integrate Rubidium recovery into our existing lithium processing flowsheet.

This allows for the potential generation of a low-cost, high-value by product stream, without disrupting our core focus on lithium.

It provides additional revenue diversification while supporting a more efficient and sustainable development model.

“The discovery of significant Rubidium mineralisation at Seymour adds an exciting new dimension to our project’s strategic value. As one of the largest high-grade Rubidium resources on the ASX and the most substantial in Canada, Seymour is well positioned to play a critical role in the global supply of this high-value specialty metal.”

How does this Rubidium discovery align with GT1’s existing lithium operations?

Rubidium is hosted in muscovite mica, which is already separated during the lithium processing flowsheet.

This mineral had previously been treated as waste, yet historical metallurgical work shows it contains strong Rubidium grades, up to 1.3%, with an average of 1.2% across various fractions.

Because the mica is already being removed, investigating Rubidium recovery could be done with minimal modification to the existing plant design.

“Rubidium’s importance in advanced technologies and its recognition as a critical mineral by the US and Japan highlight the growing demand and strategic relevance of this metal.”

What is the commercial potential of Rubidium and how could it impact GT1’s financial outlook?

Rubidium commands a premium price in the specialty metals market, with high-purity material selling for around USD $1,060 per kilogram.

Demand is expanding across sectors such as biomedical imaging, fibre optic communications, ion engines and quantum devices.

The global market, though relatively niche, is projected to grow from USD $4.63 billion in 2023 to USD $8 billion by 2033.

For GT1, the potential lies in monetising material that is already processed as part of our lithium circuit, potentially unlocking a low cost secondary revenue stream that enhances project economics and aligns with our sustainability objectives.

Importantly, Rubidium could unlock government funding opportunities, something our corporate development team will be actively assessing.

“By investigating Rubidium products as a low-cost by-product alongside our core lithium operations, we can unlock additional value, enhance project sustainability, and provide diversified exposure for investors.”

What are the next steps to evaluate Rubidium recovery and integration into operations?

We will look to undertake further targeted metallurgical test work focused on understanding the Rubidium’s recovery potential and how we will integrate this into our broader strategy which remains unchanged for Seymour.

Our core focus remains unchanged, with key workstreams continuing to advance toward project permitting and approvals we will also keep exploring this by-product opportunity at Seymour.

“We look forward to progressing targeted test work to better understand Rubidium’s recovery potential and to further integrate this opportunity within our broader strategy and government engagement initiatives.”

How does GT1’s location and government engagement strategy enhance its Rubidium opportunity?

GT1’s position in Ontario provides a significant jurisdictional advantage.

Canada has historically played a key role in Rubidium supply, including exporting a large portion of China’s imports, which highlights the country’s relevance in the global trade landscape.

As Rubidium is now listed as a critical mineral by both the US and Japanese governments, the Seymour Project aligns well with international efforts to secure independent supply chains.

Enhancing project value through strategic diversification

With Rubidium now identified as a high-grade by product opportunity at Seymour, GT1 is positioned to offer exposure to both traditional battery markets and emerging critical mineral supply chains.

The company’s low-cost integration pathway, combined with strong jurisdictional support and market demand, makes this development highly compelling.

As Green Technology Metals advances metallurgical studies and engages with strategic stakeholders, the company continues to build out a diversified, vertically integrated platform focused on long-term value creation and supply chain resilience in North America’s energy and technology transition.

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