Tolmer Soil Assays Indicate Extensions & New Targets

Expansive surface Au-Ag-Pb anomalism suggests growth potential

HIGHLIGHTS

  • March 2025 Tolmer discovery hole ranked 5th highest-grade silver intersection reported globally during H1 2025, with an interval of 6m @ 4,747 g/t Ag from only 46m depth

  • May - June 2025 drilling confirmed extensions of high-grade silver (~200 - 4,750 g/t Ag) within ‘western silver zone', with the emergence of high-grade gold alongside silver (~5 - 50 g/t Au)

  • New soil assays indicate potential northwest-southeast orientation of mineralisation and confirm broad surface gold (Au), silver (Ag) and lead (Pb) anomalism across Tolmer, with potential for material extensions of Au-Ag-Pb mineralisation in the ‘western silver zone'

  • Assays for 595.3m oriented Tolmer diamond drilling pending (results expected early November), with results to help inform structural interpretation and follow up targeting across Tolmer

  • Other soil assays indicate potential gold anomalism consistent with interpreted structural features at Black Oak Tank prospect, along interpreted faults parallel to the Lake Labyrinth Shear Zone (LLSZ)

ADELAIDE, AU / ACCESS Newswire / September 23, 2025 / Barton Gold Holdings Limited (ASX:BGD)(OTCQB:BGDFF)(FRA:BGD3) (Barton or Company) is pleased to announce the assay results of ultrafine soil sampling programs completed at the Tolmer and Black Oak Tank prospects of its South Australian Tarcoola Gold Project (Tarcoola).

New assay results for these programs indicate potential for:

  • Tolmer: extensions of the high-grade ‘western silver zone', and similar new previously untested targets located between the ‘western silver zone' and the ‘eastern gold zone'; and

  • Black Oak Tank: potential for interpreted structures to host continuous gold mineralisation.

Samples were collected during July 2025 over a ~1.9km2 surface area surrounding the Tolmer gold and silver discoveries, along with a ~23km2 area covering the LLSZ, both located on the Company's Tarcoola tenements.

Full details are contained in the complete announcement, which can be accessed on the ASX website, the investor section of Barton's website, or directly by clicking here.

Commenting on the Tolmer soil assay results, Barton Managing Director Alexander Scanlon said:

"These assays provide the first hints as to orientation at Tolmer, indicating a potential overall northwest-southeast trend to the western silver zone and the potential for material extensions of its high-grade silver-gold footprint.

"We have also identified potential new opportunities located between the ‘western silver' and ‘eastern gold' zones, where coincident Au-Ag-Pb anomalies present secondary targets analogous to the more prominent footprint of the ‘western silver zone'. We expect that pending assays from our recent diamond drilling program in the ‘eastern gold zone' will materially assist our interpretation of local structural controls, and guide follow up drilling targeting."

Authorised by the Managing Director of Barton Gold Holdings Limited.

For further information, please contact:

Alexander Scanlon
Managing Director
a.scanlon@bartongold.com.au
+61 425 226 649

Jade Cook
Company Secretary
cosec@bartongold.com.au
+61 8 9322 1587

About Barton Gold

Barton Gold is an ASX, OTCQB and Frankfurt Stock Exchange listed Australian gold developer targeting future gold production of 150,000ozpa with 2.2Moz Au & 3.1Moz Ag JORC Mineral Resources (79.9Mt @ 0.87g/t Au), brownfield mines, and 100% ownership of the region's only gold mill in the renowned Gawler Craton of South Australia.*

Challenger Gold Project

  • 313koz Au + fully permitted Central Gawler Mill (CGM)

Tarcoola Gold Project

  • 20koz Au in fully permitted open pit mine near CGM

  • Tolmer discovery grades up to 84g/t Au & 17,600g/t Ag

Tunkillia Gold Project

  • 1.6Moz Au & 3.1Moz Ag JORC Mineral Resources

  • Competitive 120kozpa gold & 250kozpa silver project

Wudinna Gold Project

  • 279koz Au project located southeast of Tunkillia

  • Significant optionality, adjacent to main highway

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Competent Persons Statement & Previously Reported Information

The information in this announcement that relates to the historic Exploration Results and Mineral Resources as listed in the table below is based on, and fairly represents, information and supporting documentation prepared by the Competent Person whose name appears in the same row, who is an employee of or independent consultant to the Company and is a Member or Fellow of the Australasian Institute of Mining and Metallurgy (AusIMM), Australian Institute of Geoscientists (AIG) or a Recognised Professional Organisation (RPO). Each person named in the table below has sufficient experience which is relevant to the style of mineralisation and types of deposits under consideration and to the activity which he has undertaken to quality as a Competent Person as defined in the JORC Code 2012 (JORC).

Activity

Competent Person

Membership

Status

Tarcoola Mineral Resource (Stockpiles)

Dr Andrew Fowler (Consultant)

AusIMM

Member

Tarcoola Mineral Resource (Perseverance Mine)

Mr Ian Taylor (Consultant)

AusIMM

Fellow

Tarcoola Exploration Results (until 15 Nov 2021)

Mr Colin Skidmore (Consultant)

AIG

Member

Tarcoola Exploration Results (after 15 Nov 2021)

Mr Marc Twining (Employee)

AusIMM

Member

Tunkillia Exploration Results (until 15 Nov 2021)

Mr Colin Skidmore (Consultant)

AIG

Member

Tunkillia Exploration Results (after 15 Nov 2021)

Mr Marc Twining (Employee)

AusIMM

Member

Tunkillia Mineral Resource

Mr Ian Taylor (Consultant)

AusIMM

Fellow

Challenger Mineral Resource (above 215mRL)

Mr Ian Taylor (Consultant)

AusIMM

Fellow

Challenger Mineral Resource (below 90mRL)

Mr Dale Sims

AusIMM / AIG

Fellow / Member

Wudinna Mineral Resource (Clarke Deposit)

Ms Justine Tracey

AusIMM

Member

Wudinna Mineral Resource (all other Deposits)

Mrs Christine Standing

AusIMM / AIG

Member / Member

The information relating to historic Exploration Results and Mineral Resources in this announcement is extracted from the Company's Prospectus dated 14 May 2021 or as otherwise noted in this announcement, available from the Company's website at www.bartongold.com.au or on the ASX website www.asx.com.au. The Company confirms that it is not aware of any new information or data that materially affects the Exploration Results and Mineral Resource information included in previous announcements and, in the case of estimates of Mineral Resources, that all material assumptions and technical parameters underpinning the estimates, and any production targets and forecast financial information derived from the production targets, continue to apply and have not materially changed. The Company confirms that the form and context in which the applicable Competent Persons' findings are presented have not been materially modified from the previous announcements.

Cautionary Statement Regarding Forward-Looking Information

This document may contain forward-looking statements. Forward-looking statements are often, but not always, identified by the use of words such as "seek", "anticipate", "believe", "plan", "expect", "target" and "intend" and statements than an event or result "may", "will", "should", "would", "could", or "might" occur or be achieved and other similar expressions. Forward-looking information is subject to business, legal and economic risks and uncertainties and other factors that could cause actual results to differ materially from those contained in forward-looking statements. Such factors include, among other things, risks relating to property interests, the global economic climate, commodity prices, sovereign and legal risks, and environmental risks. Forward-looking statements are based upon estimates and opinions at the date the statements are made. Barton undertakes no obligation to update these forward-looking statements for events or circumstances that occur subsequent to such dates or to update or keep current any of the information contained herein. Any estimates or projections as to events that may occur in the future (including projections of revenue, expense, net income and performance) are based upon the best judgment of Barton from information available as of the date of this document. There is no guarantee that any of these estimates or projections will be achieved. Actual results will vary from the projections and such variations may be material. Nothing contained herein is, or shall be relied upon as, a promise or representation as to the past or future. Any reliance placed by the reader on this document, or on any forward-looking statement contained in or referred to in this document will be solely at the readers own risk, and readers are cautioned not to place undue reliance on forward-looking statements due to the inherent uncertainty thereof.

* Refer to Barton Prospectus dated 14 May 2021 and ASX announcement dated 8 September 2025. Total Barton JORC (2012) Mineral Resources include 1,049koz Au (39.7Mt @ 0.82 g/t Au) in Indicated category and 1,186koz Au (40.2Mt @ 0.92 g/t Au) in Inferred category, and 3,070koz Ag (34.5Mt @ 2.80 g/t Ag) in Inferred category as a subset of Tunkillia gold JORC (2012) Mineral Resources.

SOURCE: Barton Gold Holdings Limited



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