Patriot Battery Metals (ASX:PMT) has landed a significant discovery of high-grade cesium at its Shaakichiuwaanaan Property, where it has been defining a lithium resource in the Eeyou Istchee James Bay region of Canada.

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The cesium mineralisation occurs in two zones at the project’s CV13 pegmatite and was confirmed through cesium assay overlimit analysis, with four samples from the drill intercepts grading above 20% Cs2O (cesium oxide).

“With the receipt of overlimit assay results, we have now confirmed a large cesium discovery at Shaakichiuwaanaan, supported by wide and well-mineralized drill intercepts,” vice president of exploration Darren L. Smith said.

Intercepts from the Vega Zone included 18.1 metres at 2.71% Cs2O, including 7.4 metres at 5.45% Cs2O; and 11.1 metres at 4.87% Cs2O, including 7.1 metres at 7.39% Cs2O.

Rigel Zone intercepts included 5.9 metres at 11.19% Cs2O, including one metre at 22.69% Cs2O; and five metres at 13.32% Cs2O, including two metres at 22.90% Cs2O.

The latter zone is significant, being coincident with the apex of the structural flexure at CV13, and drilling has estimated it to be at least 200 metres by 80 metres in area and up to around five metres thick.

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On Patriot’s hit, Mr Smith explained: “Cesium mineralization of this scale and grade, often combined with high-grade lithium and tantalum, is exceptionally rare globally and underscores the extraordinary endowment of the mineral system at Shaakichiuwaanaan in high-value critical minerals.”

PMT has this morning been trading at 19.5 cents a share.

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