Barton Gold Upgrades Tunkillia MRE to 1,500koz Au at 0.78 g/t After 57,653m Infill Drilling

Manish Choudhary

11 November 2026 12:32 PM AEDT

Barton Gold Upgrades Tunkillia MRE to 1,500koz Au at 0.78 g/t After 57,653m Infill Drilling

Image Source: Krish Capital Pty Ltd

You are reading a free article with opinions that may differ from the recommendation given by Kalkine in its paid research reports. Become a Kalkine member today to get access to our research reports, in-depth technical and fundamental research. Learn more

Start Your Free Trial Now!

Barton Gold Holdings Limited (ASX:BGD) has released an upgraded JORC (2012) Mineral Resources Estimate for gold at its Tunkillia Gold Project in South Australia, lifting total resources to 1,500koz Au at 59.5Mt grading 0.78 g/t, with 989koz Au classified as Measured and Indicated, including 151koz Au in the Measured category.

Key Points

Tunkillia total gold MRE is now 1,500koz Au (59.5Mt at 0.78 g/t), with 989koz Au in Measured and Indicated categories and 151koz Au in Measured
Upgrade followed 57,653m of reverse circulation and diamond drilling across 520 holes completed since September 2025
Within the May 2025 Optimised Scoping Study pit shells, 81% of all mineralisation (822koz Au) is now classified Measured and Indicated
Contained gold within all OSS pits is 1,011koz Au at an average grade of 0.83 g/t, representing a variation of only ±2% from the March 2025 MRE figures
Updated silver MRE is 2,759koz Ag (31.6Mt at 2.71 g/t), with a resampled and upgraded silver MRE expected in Q1 calendar year 2027

Upgraded Tunkillia Gold Mineral Resources Estimate Details

The November 2026 MRE for Tunkillia covers the Area 51, Area 223N, Area 223 and Southern 223 zones. The Measured category totals 5.3Mt at 0.88 g/t for 151koz Au, the Indicated category totals 33.0Mt at 0.79 g/t for 838koz Au, and the Inferred category totals 21.2Mt at 0.75 g/t for 511koz Au. A cut-off grade of 0.3 g/t Au was applied across oxide, transitional and fresh zones. Mineral resources are reported within an optimised pit shell generated by applying a revenue factor of 2.0 to the A$3,500 per ounce optimised pit shell from the May 2025 Optimised Scoping Study, effectively limiting the MRE to mineralisation economically mineable at A$7,000 per ounce gold.

Consistency with May 2025 Optimised Scoping Study Pit Shells

Within the May 2025 OSS pit shells, contained gold is 1,011koz Au at an average grade of 0.83 g/t Au, compared with 1,035koz Au at 0.82 g/t Au in the March 2025 MRE, representing a net change of -2% in contained gold and +1% in average grade. Within the higher-priority S1 and S2 pits, contained gold is 362koz Au at 1.06 g/t Au, compared with 365koz Au at 1.05 g/t Au previously. More than 5Mt of Inferred mineralisation was converted to Indicated, and more than 5Mt of Indicated was converted to Measured within the OSS pit shells. A further 6.2Mt totalling 131koz Au of Indicated Resources sits outside the OSS pit shells.

Tunkillia Pre-Feasibility Study Targeted for Q1 CY2027

According to the filing, the upgraded MRE is intended to serve as the foundation for Tunkillia's Pre-Feasibility Study, which is targeted for completion during Q1 calendar year 2027. The infill drilling programme was designed to upgrade mineralisation within the OSS optimised pit shells in preparation for the PFS. The 6.2Mt of Indicated Resources located outside the May 2025 OSS pit shells is identified in the filing as indicating growth potential for the ongoing PFS. A resampled and upgraded silver MRE is separately expected to be completed in Q1 calendar year 2027.

Download Free Report – Explore 3 Stock Ideas & Industry Insights

Unlock 3 stock ideas and key industry insights in our free report. This information is general in nature and does not consider your personal objectives, financial situation, or needs. It is not financial advice.

All investments involve risk—consider independent advice before making any investment decisions.

View 3 Research Reports

Disclaimer:

This article (“Article”) has been prepared by Kalkine Pty Limited (ABN 34 154 808 312) (Australian financial services licence number 425376) (“Kalkine”) and its related bodies corporate who are authorised to provide general financial product advice. Kalkine.com.au and its associated pages are published by Kalkine.

Any information/advice provided in this article is general in nature and does not take into account your objectives, financial situation or needs. You should therefore consider whether the information is appropriate for your objectives, financial situation and needs before acting upon it.

There may be a Product Disclosure Statement, Information Memorandum or other offer document (“Offer Document”) for the securities or other financial products referred to in Kalkine articles. You should obtain a copy of the Offer Document and consider it before making any decision about whether to acquire the security or financial product.

Kalkine strongly recommends that you seek advice from a financial adviser, stockbroker or other professional (including taxation and legal advice) before acting on any advice/information in this Article or on the Kalkine website. Not all investments are appropriate for all people.

The information in this Article and on Kalkine website has been prepared from a wide variety of sources, which Kalkine, to the best of its knowledge and belief, considers accurate. Kalkine has made every effort to ensure the reliability of the information contained in its articles (including this Article), newsletters and websites. All information represents our views at the date of publication and may change without notice.

The information in this Article does not constitute an offer to sell securities or other financial products or a solicitation of an offer to buy securities or other financial products.

Kalkine does not issue, sell or deal in any financial products.

This Article may contain information on past performance of particular investments. Please note past performance is neither an indicator nor a guarantee of future performance.

To the extent permitted by law, and excluding any dishonesty or gross negligence by Kalkine, Kalkine disclaims and excludes all liability for any direct, indirect, implied, punitive, special, incidental or other consequential loss or damage arising from the use of or reliance on this Article, the Kalkine website and any information published on the Kalkine website without any warranties or representations by Kalkine to you. To the extent the law prohibits or limits this exclusion, Kalkine limits its liability to the resupply of services.

Please also read our Terms & Conditions and Financial Services Guide for further information.

Employees and/or associates of Kalkine and its related entities may hold interests in the securities or other financial products covered in this Article or on the Kalkine website. Any such employees and associates are required to comply with certain safeguards, procedures and disclosures as required by law.

Some of the images/music that may be used in the Article are copyright to their respective owner(s). Kalkine does not claim ownership of any of the pictures displayed/music used in the Article unless stated otherwise. The images/music that may be used in the Article are taken from various sources on the internet, including paid subscriptions or are believed to be in public domain. We have used reasonable efforts to accredit the source wherever it was indicated or was found to be necessary.

Kalkine Media Pty Ltd, an affiliate of Kalkine Pty Ltd, may have received, or be entitled to receive, financial consideration in connection with providing information about certain entity(s) covered on its website.