Pilbara samples unveil lithium for Infinity Mining

Initial assay results from Infinity Mining’s first field rock sampling program at its Tambourah South tenement in the east Pilbara region of WA have confirmed multiple stacked lithium-bearing pegmatite units.

More than 225 samples were taken in total across the western side of Tambourah South.

The highlight was 2.635 per cent lithium oxide, 0.0662 per cent rubidium and 611.3 parts per million caesium.

Twenty-five samples returned more than 1 per cent lithium oxide, with 14 returning more than 1.5 per cent lithium oxide and six results of more than 2 per cent lithium oxide.

Infinity intends to reassay selective rock samples for rare earths elements noting the current geochemical results highlight the potential for possible rare earths mineralisation.

The rubidium and caesium values confirm highly fractionated pegmatite with fertile lithium-caesium-tantalum, or “LCT” chemistry, it says.

The company also describes the consistency of grade as encouraging, given the currently mapped pegmatites cover a large part of the western side of its tenement.

Not every pegmatite will be fertile but ongoing mapping, sampling and drilling will determine the commercial potential for this lithium, rubidium mineralised system. Given the favourable LCT chemistry, these samples warrant further analysis for rare earths elements as it appears to be a highly fractional system.

The company says it intends exploring the possibility that the pegmatite units extend some depth below surface in its maiden 2500m RC drilling program that received WA Department of Mines and Industry approval earlier this week.

Preparatory earthworks for the drilling are planned soon after a heritage survey was carried out in conjunction with the Palyku People.

The samples were taken from 36 weathered outcropping pegmatite units with widths of up to 10m and strike lengths of up to 558m, making up more than 2.6km of strike length in total.

Numerous pegmatite dykes hosting the lithium minerals spodumene and lepidolite were identified within the Tambourah South tenement, 80km south-west of Marble Bar in April during a helicopter-assisted reconnaissance program of several Pilbara projects.

Infinity is an explorer looking for gold, copper, lithium and base metals in the Pilbara, south-west of Port Hedland and in the central Goldfields around Leonora.

The company holds 100 per cent of 697 square kilometres of tenements in the Pilbara and another 13.81 square kilometres in the central Goldfields.

The tenements include 10 exploration licences and seven prospecting licences as well as two mining leases.

Its Tambourah South prospect is attracting most interests at present. Situated 65km south-east of the Pilgangoora lithium deposit, it is within greenstones of the Apex basalt and adjacent to the Yule granite complex.

MinRex Resources reported lepidolite-spodumene bearing pegmatites on its leases adjacent to Tambourah South, with its rock chip sampling returning more than 2.5 per cent lithium oxide.

With the Wogdina lithium deposit also to the north, there is some reasonable nearology at play for Infinity Mining in this region of the Pilbara.

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