Cosmos Exploration

Highly Fractionated Pegmatites Confirm Drill Target
5 October 2023

Surface sampling and new interpretation of airborne data indicates a substantially expanded target area for spodumene-dominated pegmatites, to be drill tested in the upcoming winter field season.


  • Preliminary assays received from surface sampling at Corvette Far East (CFE) return highly elevated lithium and beryllium as well as critical characteristic low K/Rb ratios and high caesium confirming the presence of extremely fractionated pegmatites close to a potentially large spodumene system.

  • Preliminary mineralogy work and consultation with lithium pegmatite experts confirm the presence of diagnostic highly fractionated lithium-caesium-tantalum minerals such as petalite and unusually lithium-caesium-rich beryl, further supporting the interpretation that Polaris is a highly fractionated rare metal pegmatite on the outer edge of an LCT pegmatite field.

  • New interpretation of the airborne magnetic data indicates the presence of an important eastwest trend across the project, commonly seen at large lithium deposits in the Superior Province.

  • These results are extremely encouraging and strongly support the interpretation that a larger, spodumene-dominated target is likely to be undercover to the south-southwest and/or at depth.

  • These exciting developments have also substantially expanded the strike length of the highly fractionated drill target area to 2.8 km.

  • Drill permitting is currently underway in order to test these drill targets as part of the upcoming winter exploration season in Quebec.