Cobalark, Western Australia

Summary

The Cobalark project of Lithium Australia NL (‘LIT’) (LIT 100%) lies 670 kilometres (‘km’) northeast of Perth and 60 km east-southeast of Meekatharra in Western Australia. LIT has applied for two exploration licences covering 355 km2 (see Figure 1) to secure this early-stage exploration project.

Figure 1: Cobalark project location.

Geology

The tenements cover the interpreted Cobalark structural corridor, which is characterised by scattered, late-stage Archean biotite-adamellite granitoids that have been intruded in places by muscovite pegmatites.

Previous exploration for tantalum by Quantum Resources recorded pegmatite outcrops additional to those previously mapped by the Geological Survey of Western Australia. Contact metamorphic affects within the host biotite adamellite suggest greisens have developed along some of the contacts. Tantalum occurs as fine, disseminated grains in both the pegmatite and ferruginous capping rocks.

No lithium exploration has been undertaken over any of the pegmatites within the project area.

Proposed exploration

LIT will assemble a database of all open-file data, including geophysical survey, in the area of the project. Field mapping and sampling will further define pegmatite occurrences and their mineralogy. Much of the area is soil covered and LIT will employ proprietary geochemical techniques to further define the lithium potential of the project.