(Kitco News) - A major new cesium discovery in Quebec could shatter China's decades-long monopoly over one of the world's most strategically important minerals, potentially unlocking billions of dollars in economic value and reshaping North America's role in the global race for critical resources.
Patriot Battery Metals (PMET) revealed the discovery at its lithium-focused CV13 project in Quebec, where initial drilling results suggest it could become a globally significant cesium deposit in North America, according to Blair Way, Director of Patriot Battery Metals.
Cesium is among the rarest and most critical minerals globally, essential in GPS systems, aerospace technology, atomic clocks, medical imaging, and critical defense systems. Currently, North America is almost completely reliant on Chinese-controlled sources – a significant national security vulnerability.
“The critical mineral space has really been dominated by China for the last 20, 30 years,” Way told Kitco Mining on the sidelines of PDAC 2025 in Toronto. “We're behind, and this discovery is an opportunity for us to get caught up. Having solutions in North America, specifically in Canada and for us in Quebec, will be a good thing for the world market.”
China’s control over cesium recently intensified following its acquisition of Canada’s Tanko Mine in Manitoba, previously North America’s last major operational cesium mine. Way described Tanko's situation starkly: “They're kind of grasping at the last remains of their deposit which was discovered over 20 years ago… What we think we've identified has that scale to be more than what they have been mining for decades.”
Initial assays from PMET’s discovery exceeded standard measurement limits—typically capped at around 1% cesium oxide—suggesting exceptionally high-grade concentrations. Way described these early results as clearly promising:
“The scale is quite impressive. Multiple holes indicate an over 1 percent limit from the assays. It has potential for decades of supply,” Way explained. “We've got something really special here. Given the geographic layout, we've got a number of hundreds of meters in one direction and almost 500 meters in the other. For a lithium deposit to be demonstrating such a potentially significant Cesium byproduct is exceptional and confirms how geologically significant the Shaakichiuwaanaan Property is.”
Economic Potential: Billions in the Ground
Conservative valuations indicate the discovery could represent extraordinary economic value. Preliminary estimates indicate ranges of 150 to 300,000 cubic meters of cesium-bearing pegmatite identified at CV13. Using conservative industry density estimates, this could translate to hundreds of thousands of tons of mineralized pegmatite .
Cesium oxide (Cs₂O), the primary marketable form of cesium, trades between $60,000 and $100,000 per metric ton, depending on purity and market dynamics. Even at a conservative 1% grade, this discovery could yield approximately 8,120 tons of cesium oxide, translating to a market valuation ranging from $487 million to over $812 million USD.
If average concentrations approach higher-end assay results—exceeding 5% cesium oxide—the valuation could surge to several billion dollars, positioning this as a globally transformative find.
Way himself cautiously acknowledged the potential economic implications but clearly emphasizing: “The numbers are staggering. Even 10,000 tons is big in the world of cesium.”
Strategic and Geopolitical Implications
Beyond economics, the discovery carries immense geopolitical implications. With the global cesium market expected to grow significantly—reaching over $431 million by 2030—the North American supply chain stands to benefit greatly from domestic sources. Way suggested significant governmental interest could quickly follow from both Canada and the U.S.:
“The level of interest from the Canadian government and most likely from the U.S. government could actually change the way we look at some of these materials,” Way said. “Things like this can certainly help change the politics of some of the tariffs and other trade barriers being imposed some of which don’t make a lot of sense when you're in the industry. Eventually, I think, sense will prevail on these critical materials.”
The discovery also emerges amid escalating global competition for critical minerals, now tightly woven into national security policies. Recent U.S. moves—including imposing a 10% tariff on Canadian energy imports—highlight the growing intersection between economic security and mineral independence, amplifying the strategic importance of PMET’s announcement.
Next Steps: Rapid Advancement Toward Commercialization
Way confirmed Patriot Battery Metals is quickly moving forward to clarify the full economic potential of its discovery. The company has already initiated extensive additional assays on the drill hole cores to understand the over limits :
“We have overlimit assays on over a hundred holes. Even if they only come in around one percent, it's still significant given the scale,” Way said. “We have started the work on it. The labs will do their overlimit testing. Once we have that data, we can build a model on the Cesium mineralisation very quickly.”
For complete details and more on PMET, watch Blair Way’s full exclusive interview at Kitco News.