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Patriot Battery Metals Confirms World’s Largest Pollucite-Hosted Caesium Resource

Patriot Battery Metals is moving to spotlight a significant materials breakthrough with the confirmation of the world’s largest pollucite-hosted caesium resource at its Shaakichiuwaanaan Property in Quebec. The company has scheduled an investor webinar for July 22 (Australia time) to detail its maiden Mineral Resource Estimate and outline next steps. This development marks a potentially important shift in the battery materials landscape, particularly for caesium, a rare metal with limited global supply and emerging relevance in energy storage applications.

The deposit, defined within the Rigel and Vega zones, is being positioned as a new source of strategic-grade caesium in North America. Traditionally used in niche sectors like oil and gas exploration and aerospace, caesium is now being reexamined for its potential role in electric vehicle batteries and next-generation propulsion technologies, largely due to its high ionic conductivity and unique electrochemical properties.Patriot’s push into caesium aligns with backing from the UK’s Advanced Propulsion Centre, which contributed $4.05 million toward the project as part of a broader $8.1 million funding package. This level of international investment underscores rising interest in diversifying the critical minerals supply chain beyond China-dominated markets, particularly as energy transition policies tighten the focus on material security and local sourcing.

While the webinar will focus primarily on the caesium find—now formally classified via a Mineral Resource Estimate—it will also cover updates on the company’s ongoing lithium feasibility studies. These studies are critical to defining a pathway for the development of multi-metal resources at the site, and they suggest Patriot is seeking to leverage geological synergies to advance multiple energy-transition materials under one operational framework.

Key implications to watch:

  • If economically viable, the caesium resource could support non-Chinese verticals for advanced EV battery chemistry.
  • The mix of funding from UK bodies suggests transatlantic interest in upstream caesium supply chains.
  • Integration of caesium and lithium studies points to a resource strategy centered on flexibility and market responsiveness.

This announcement places Patriot Battery Metals at a potential inflection point. As OEMs and energy storage firms search for stable supplies of next-gen battery inputs, materials once considered peripheral—like caesium—are being reconsidered. The key will be how quickly these resources can be qualified, extracted, and integrated into existing battery tech pipelines. The July webinar will provide early indicators of scope, timeline, and strategy.

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Filip Bubalo
Filip Bubalo

Researcher & writer for Charging Stack. Marketing manager at PROTOTYP where I help mobility companies tell better stories. Writing about the shift to electric vehicles, micromobility, and how cities are changing — with a mix of data, storytelling, and curiosity. My goal? Cut through the hype, make things clearer, and spotlight what actually works.

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