Infinity zeroes in on pegmatites at Pilbara lithium project

Infinity Mining is gearing up for a maiden 2500m RC drilling program after sighting a spodumene-rich lithium system within the company’s Tambourah South lithium project, in WA’s east Pilbara region. The outcropping pegmatites were spotted at the project’s southern tenement with the company now homing in on stacked pegmatite units of up to 30m wide as first drill targets.

The initial holes will be drilled to determine the depth of the pegmatites.

Clearance is being sought to bring in the heavy equipment access and pad clearing and the drill program has already been approved by the state regulator.

In addition, cultural heritage surveys are now complete, opening the door for exploration around the company’s target areas.

All field work and government approvals are now in place for Infinity to test the surface outcrops for deeper Lithium mineralisation on the Tambourah South Tenement.

The Tambourah South project is part of the company’s 697 square-kilometre Pilbara portfolio.

Infinity’s lithium-focused Tambourah tenements — North and South — are separated by 8km and collectively cover an area of 15.92 square kilometres over a deformed section of a greenstone belt containing mafic and ultramafic rocks.

Notably, 75km to the north-west, at Mineral Resources’ world-class Wodgina lithium mine, maximum lithium-caesium-tantalum pegmatite development is found within the mafic and ultramafic rock types of the Wodgina Greenstone Belt.

After a heliborne reconnaissance program over Tambourah in April, a series of pegmatite dykes hosting visible lithium-bearing minerals — spodumene and lepidolite — were identified and sampled by Infinity.

The company says the assay results were anomalous for lithium and complemented previous sampling programs undertaken by the explorer in 2017 that returned up to 1.47 per cent lithium oxide in rock chip assays.

A follow-up exploration program of detailed mapping and rock chip sampling started in June with the company expecting results for more than 200 samples before spinning the drill bit in the upcoming program.

Infinity believes its “one-two” combination of assays and a spinning drill bit work plan has the potential to up the ante on its lithium venture in scale and prospectivity.

Whilst it is early days, Infinity believes it could be onto a large pegmatite system — an outcome not unusual for its postcode.

Geoscience Australia says about 95 per cent of Australia’s lithium resources are found within just five deposits and all are in WA — two of them Pilgangoora and Wodgina are within 75km of Infinity Mining’s drill targets.

Is your ASX-listed company doing something interesting? Contact: matt.birney@wanews.com.au