Global Lithium’s optimistic horizon following Manna’s breakthrough lithium findings

20 March 2024 11:18

Global Lithium Resources (ASX:GL1) has reported promising results from its Manna Lithium Project, located 100km east of Kalgoorlie in Western Australia, with high-grade intercepts that enhance the prospects for potential underground developments.

This news comes on the heels of Global’s recent announcement regarding improved recoveries at Manna, now reaching 75 per cent Li20, up from 70 per cent.


Figure 1: Manna Project showing all RC and DD drill collars with select new significant intercepts. The Target Area represents a potential undercover extension of the pegmatite system hosted within the Manna Fault zone.

The north

Following a successful 2023, characterised by a 60,000 metres reverse circulation and diamond drilling program at Manna’s north, results revealed the highest grade of 6m at 1.65 per cent Li2O from 342 metres in MRC0243.

Additional significant results include:

  • 15.4m at 1.28% Li2O from 212.5m in MDD0040
  • 12m at 1.55% Li2O from 191m in MRC0238
  • 8m at 1.32% Li2O from 329m and 9m at 1.44% Li2O from 380m in MRC0247
  • 11m at 1.10% Li2O from 314m in MRC0250
  • 8m at 0.96% Li2O from 265m and, 8m at 1.36% Li2O from 285m and, 13m at 0.89% Li2O from 315m in MRC0274
  • 11m at 1.23% Li2O from 282m and, 15m at 0.93% Li2O from 315m and, 7m at 1.29% Li2O from 341m in MRC0343

Figure 2: Long section A-A’ through the northern zone of the Manna lithium deposit looking northwest with call-outs for select new significant Li2O intercepts.

Many of the above drill results align with extensional and infill drilling, indicating that the Manna pegmatite system remains open to the north and at depth.

Moreover, these results hold significant promise for Global, as the high-grade zones they uncover not only offer opportunities for underground mining but also play a crucial role in advancing the study focusing on Manna North lithium mineralisation.

This study is running concurrently with the Mineral Resource Estimate (MRE), slated to be integrated into Manna’s comprehensive feasibility study expected by CY24.

Manna central

Not only is the northern area yielding results, but so are the southern and central regions of Manna.

Key sections of Manna Central are now filled at 40×40 metres, supporting future mine planning to be integrated into the MRE.

Tests conducted over a 1.4 kilometre strike and to a vertical depth of 450 metres have revealed notable results, including 21 metres at 0.99% Li2O from 91 metres in MRC0312 and 11 metres at 0.95% Li2O from 50 metres in MRC0316.

These findings have refined the pegmatite system model, enhancing understanding of grade variability and pegmatite continuity within the deposit.


Figure 3: Cross section B-B’ through the Manna lithium deposit with significant Li2O intercepts.

The south

Further to the south, potential new mineralised pegmatite zones were uncovered beneath shallow cover, southwest of Manna Central, with indications suggesting the possibility of additional material amenable to open-pit mining methods.

Further south, potential new mineralised pegmatite zones were discovered under shallow cover, southwest of Manna Central.

Notably, significant data includes intercepts such as 21 metres at 0.99% Li2O from 91 metres in MRC0312 and 11 metres at 0.95% Li2O from 50 metres in MRC0316.

To date, Manna pegmatites have demonstrated grades exceeding 1% Li2O across a 3.2 kilometre strike length and to a vertical depth of 450 metres.

Looking ahead, a combination of infill and extensional drilling, alongside increased diamond drill hole frequency, is poised to furnish Global Lithium with a robust model crucial for advancing the Manna definitive feasibility study.

An optimistic horizon

Subsequent exploration will focus on testing under areas of cover for shallow spodumene-bearing pegmatites.

Global’s strategy involves planned exploration drilling extending from the Manna fault zone towards the southwest and northeast of the Manna Lithium Deposit.

Airborne magnetic surveys indicate the fault zone’s potential to host numerous pegmatites from Manna, spanning over 5 kilometres to the southwest of the Lithium Project.

To execute this plan, Global intends to initiate reverse circulation drilling totalling approximately 6,000 metres, slated to commence in the second quarter of calendar year 2024.


Figure 4: Long section C-C’ through the Central zone of the Manna lithium deposit looking northwest call-outs for select new significant Li2O intercepts.

Company commentary

Logan Barber, Global Lithium’s General Manager of Geology, expresses confidence that the upcoming third drilling campaign, mirroring the success of its predecessors, will undoubtedly yield positive results.

“After delivering a safe and successful 2023 drill campaign it is rewarding to have received final assay results that demonstrate the continuity and high-grade nature of the Manna Lithium Deposit. We look forward to incorporating these results into the updated Mineral Resource Estimate, which will form part of the Manna DFS,” he said.

“The GL1 exploration team is now gearing up to embark on the Company’s third successive drill campaign at Manna that will focus on drill testing potential new zones of shallow lithium mineralisation southwest and along strike of the Manna Lithium Deposit.”

GL1’s Australian Security Exchange-listed share price is currently trading at $0.54 (11:15 am UTC+ 8 hours).

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