​

The main lithium bearing host geology in the region are pegmatites within the Burrell Creek Formation of the Finnis River Group of sediments, adjacent to and within the contact aureole of late Proterozoic granites as the source of the LCT (Li- Cs-Ta) pegmatites in the area.

The Burrell Creek Formation continues from the known lithium bearing district predominantly held by Core Lithium in the north, through the Litchfield National Park and into the newly acquired four granted tenements, and into Ragusa’s Daly River Lithium Project in the south. Together, this combined “supergroup” of tenements Ragusa has acquired represents a significant and strategic landholding within the very highly prospective geology of the Finnis River Group for lithium bearing minerals, and all within a short distance to the major port of Darwin.

​

Historical exploration in the prospective lithium province relating to pegmatites, has predominantly been for tin and tantalum, with numerous remnant small-scale artisanal mining evident in the area (including the new Ragusa tenements project area). Reports on previous exploration for lithium by Core, Liontown, and others has consistently noted the intense lateritc weathering profile in the area, which has led to the breakdown/alteration of spodumene to kaolinite, resulting in the lack of spodumene at surface. In a presentation to the 2017 AGES conference, Core noted “interest and knowledge of lithium limited to amblygonite collectors” and “no spodumene at surface” 1 , which is remarkably consistent with data provided to Ragusa on the new tenements.