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Van Uden Gold Project

Nicole Airay — Thu, 06 Mar 2025 05:46:31 +0000

Van Uden Gold Project

The Van Uden Gold Project is located in the Southern Cross-Forrestania Greenstone Belt, 90km east-northeast of Hyden and 120km south of Southern Cross. It is close to the Marvel Loch (producing) and Westonia – Edna May (Care & Maintenance) gold processing Plants.

The Location

Located within the Forrestania Greenstone belt, the Van Uden Gold Project consists of granted mining leases, exploration licences and miscellaneous licences (haul roads and direct access). The Project lies to the west of the Mt Holland lithium mine, south of the operating Marvel Loch gold Plant, and southeast of the Edna May gold Plant.

Van Uden Gold Deposit & Mineral Resource Estimate

In May 2025 TG Metals reported and published a JORC 2012 compliant Mineral Resource Estimate (MRE) statement (ASX: TG6, 5 June 2025)

Mineral Resource Estimate for the Van Uden Gold Deposit – May 2025
Material	Indicated			Inferred			Total
Material	Tonnes	Grade (Au g/t)	Gold (Oz)	Tonnes	Grade (Au g/t)	Gold (Oz)	Tonnes	Grade (Au g/t)	Gold (Oz)
Laterite	234,000	0.9	6,940	525,000	0.7	11,800	759,000	0.7	18,740
Oxide	867,000	1.2	34,200	1,141,000	1.0	38,200	2,008,000	1.0	72,400
Transitional	291,000	1.1	10,700	770,000	1.1	26,500	1,061,000	1.1	37,200
Fresh	318,000	1.6	16,500	2,207,000	1.2	82,300	2,525,000	1.2	98,800
Total	1,710,000	1.2	68,340	4,643,000	1.2	158,800	6,353,000	1.1	227,140

The MRE was updated to conform to the Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves (JORC Code) 2012, as the previous reported MRE by Convergent Resources Limited complied with JORC 2004 guidelines.

All tonnages are dry metric tonnes. It has been reported at a cut-off grade of 0.35 g/t Au by area within a A$5,000/oz Au optimised pit shell based on mining parameters and operating costs typical for Australian open pit extraction deposits of a similar scale and geology. Minor discrepancies may occur due to rounding of appropriate significant figures.

The resources comply with the Reasonable Prospects for Eventual Economic Extraction (RPEEE), a key principle in mineral resource reporting that requires the qualified person to demonstrate that a mineral deposit has the potential to be economically extracted in the future. By applying the appropriate RPEEE the JORC 2012-compliant MRE will facilitate a smooth transition to the anticipated update to the JORC Code expected by the end of 2025.

Tasman Pit Cross Section

The updated MRE has defined the Van Uden gold deposit to be NW trending and continuous for at least 2.5km, incorporating historical Dieman, Laterite and Tasman Pits. Gold mineralisation, whilst continuous was reported as open down dip along the eastern side of the MRE envelope. These areas will be focus for future resource and infill drilling programs. Typical sections across Dieman and Tasman Pits highlight the extensive shallow economic mineralisation within the optimised shell boundary and potential for mineralisation with depth.

Dieman Pit Cross Section

Refer to the TG6 ASX release, 5 June 2025 for the detailed MRE modelling, estimation parameters and competent person statement.

Gold City Prospect

The Gold City prospect is located on a single exploration licence, 25km to the south of the Van Uden Group granted mining leases. There are numerous gold workings on the tenement and historical drilling at Gold City was shallow, less than 120m depth, with the prospect providing additional fertile exploration opportunity for TG Metals.

Circa 1950’s historical gold workings along an identified gold trend

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Lake Johnston Project

Nicole Airay — Thu, 31 Mar 2022 07:49:56 +0000

Lake Johnston Project

The Lake Johnston Project is located ~300km from Kalgoorlie in the Southern Goldfields region of Western Australia. It covers +50 km strike of the Lake Johnston Greenstone Belt, which consolidates the southern region for the first time.

The Location

Located between two prolific WA greenstone belts, the Lake Johnston Greenstone Belt is geologically similar to the prolific gold, lithium and nickel producing Norseman-Wiluna and Southern Cross greenstone belts. Historically overlooked and under-explored – Lake Johnston was never the main project focus for the “nickel majors” that held the ground historically. TG Metals has the most significant land package ever held by one company in the history of exploration within the Lake Johnston Greenstone Belt.

Burmeister Lithium Deposit

The Lake Johnston Greenstone Belt hosts defined Lithium-caesium-tantalum (LCT) pegmatites – a source of about one-fourth of the world’s lithium production and most of the tantalum production. TG Metals has discovered the Burmeister Lithium Deposit, a series of stacked shallow dipping spodumene bearing pegmatites (refer to figure below). The pegmatites are “blind” under cover with no outcrop and were discovered by drilling beneath prominent lithium soil anomalies. TG Metals completed a series of Reverse Circulation (RC) and Diamond Drilling (DD) programs in late 2023 and early 2024 to be able to calculate an Exploration Target.

An Exploration Target Statement was announced on the 1 May 2024 (ASX Release) of:

Tonnes Range Low	Tonnes Range High	Li₂0 Range Low (%)	Li₂O Range High (%)
15.6 million	20.1 million	0.97	1.19

At 0.4% Li₂0 cutoff

The Exploration Target quantity and grade is conceptual in nature and is based on the TG Metals resource definition drilling undertaken since discovery in October 2023. The current drill hole density (spacing between holes) at Burmeister is not considered sufficient to determine a Mineral Resource and the next program of drilling will infill to achieve a 100m x 100m spacing that TG Metals believes based on the nature of the pegmatite intrusive will be able to achieve an inferred resource.

The drilling defining the Burmeister pegmatites has been modelled within grade envelopes and aggregated to determine the total Exploration Target ranges in the table above. The cutoff grade of 0.4% Li2O was determined as the lowest grade assayed within all pegmatite intercepts, including RC drilling intervals, which crossed pegmatite-basalt boundaries. This captures all the lithium mineralisation within the pegmatite hosts which is predominantly spodumene. The size of the Target and the results of “Conceptual Pit Optimisations” (Figure below) provide support for the Company’s strategy to develop a stand-alone lithium mining and processing operation at Lake Johnston. The deposit remains open at depth and at the limit of the conceptual pit shells, 290m depth for the USD$1500 shell and 340m depth for the USD$2500 shell, offering further opportunities at depth for deposit extensions. Further studies including metallurgical testwork and mining assessments are required to confirm the validity and economics of a custom processing Plant suitable for the Burmeister ore.

Jaegermeister Lithium Prospect

The prospect has significant untested potential for lithium mineralisation. Soil geochemical sampling over the region northeast of Burmiester has defined several high tenor lithium anomalies (refer to map) – significantly larger than the Burmeister Lithium Deposit.

Bremer Range Ni Co Laterite Deposits

The majority of the historical drilling is shallow – testing only the oxide material. Multiple drill results of +1% nickel and cobalt up to 6,900 ppm defines large nickel-cobalt oxide (surficial/lateritic) deposits. Any “Exploration Target” for nickel-cobalt oxide deposits stated by past operators is not compliant with the JORC Code.

TG Metals completed a desktop study on past drilling focusing on the potential of nickel laterite deposits at Bremer Range and were able to define an Exploration Target based on historical drilling data (ASX Release on the 10 November 2022) of:

Exploration Target Cutoff Grades	Tonnes Range Low	Tonnes Range High	Ni Range (Low %)	Ni Range (High %)	Co Range (Low %)	Co Range (High %)
0.3% Ni	28 million	32 million	0.41	0.47	0.029	0.034
0.5% Ni	7 million	8 million	0.55	0.65	0.045	0.053

Exploration Target Ranges at 0.3% and 0.5% Ni cutoffs

The potential quantity and grade of the Exploration Target is conceptual in nature. It is based on historical drilling data which is of variable quality and deficient in some analysis for deleterious element and compositing of samples (up to 4m) is not conducive to determining a Mineral Resource of sufficient accuracy. Past drilling did however, define 5 zones of nickel laterite mineralisation. These zones were modelled within defined grade enveloped and aggregated to determine the total Exploration Target ranges in the table above.

Mineralisation envelopes were interpreted in section from drill data. A nominal 0.2-0.3% Ni edge lower cut off was initially developed and adjusted as required to capture and delineate the majority of significant and related Copper (Cu), Cobalt (Co), Chrome (Cr) and Zinc (Zn) mineralisation. The development of wire-frames were tightly controlled and typically not extended (extrapolated) beyond one average section spacing from the last drillhole ‘point of observation’. The 5 main mineralisation areas defined and modelled are outlined in the figure below (Area 2 and Area 4 are not labelled however defined by the yellow outline). In addition, 3 typical or example sections to illustrate the nature of the Bremer Range Ni-Co laterite mineralisation.

Exploration Strategy

Despite a long history of exploration in the Lake Johnston Belt, surficial cover and deep weathering have made discovery a challenge. TG Metals is overcoming these challenges through modern geophysical and geochemical techniques. Already the new geochemistry via lithium soil sampling has been successful in discovering blind lithium pegmatites at the Burmeister discovery. In addition, TG Metals is investigating seismic as a means to depict subsurface geological boundaries. LIDAR (Light Detection and Ranging) has also been effective in defining topographical features which show previously unseen subsurface structures. TG Metals has a staged approach to mineral exploration which focusses in on mineral occurrences and deploys drilling in a targeted cost-effective manner.

TG Metals intends to continue it’s staged, targeted approach, employing modern techniques to capitalise on mineral targets which have not been being fully tested or completely missed in past exploration including Tay, Pagrus Hill, Wellstead Rock and Taylor Rocks lithium prospects.

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About Us

Nicole Airay — Thu, 31 Mar 2022 07:48:12 +0000

About TG Metals

TG Metals Limited (ASX:TG6) is a dual commodity explorer and developer focused on lithium and gold in Western Australia. Our flagship Lake Johnston Project hosts the high-grade Burmeister lithium deposit and multiple emerging prospects near established processing infrastructure. In parallel, TG Metals is advancing the Van Uden Gold Project, where recent drilling of remnant stockpiles supports a fast-track, low-cost path to gold production, backed by strong gold prices and nearby toll milling options.

Our Focus

TG Metals is committed to unlocking value through a dual commodity strategy, targeting gold and lithium assets with near-term development potential. In gold, our focus is on fast-tracking production at the Van Uden Gold Project. Recent drilling of remnant stockpiles marks the first step in establishing a low-cost, toll-treated operation. Located near operating gold plants and established infrastructure, Van Uden offers a clear pathway to early cash flow while we continue to expand and upgrade the resource through targeted drilling.

At our Lake Johnston Project, we are advancing the high-grade Burmeister lithium deposit alongside a growing pipeline of regional prospects. With nearby processing infrastructure and rising global demand for critical minerals, Lake Johnston positions us to play a key role in the lithium supply chain.

Exploration Strategy

Backed by experienced leadership, access to critical infrastructure, and a commitment to disciplined development, TG Metals is strategically positioned to deliver near-term cash flow from gold while rapidly advancing its lithium assets. With infill drilling planned at Van Uden and ongoing exploration at Lake Johnston, the Company is focused on unlocking value across both commodities to generate long-term growth for shareholders.

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