Barton Gold’s Tolmer Yields >100,000 g/t Silver Trial Gravity Concentrate
Barton Gold (ASX: BGD)
Announced the results of a preliminary analysis of sample mineralisation collected from drilling at its high-grade Tolmer Silver prospect, located at its South Australian Tarcoola Gold Project.
Tolmer is one of Australia’s highest-grade modern silver discoveries.
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| Barton Gold | ASX: BGD | |
| Stage | Production, development | |
| Metals | Gold | |
| Market Cap | A$217 Million @A$0.90 | |
| Location | South Australia | |
| Website | www.bartongold.com.au |
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Tolmer Yields >100,000 g/t Silver Trial Gravity Concentrate
Metallurgical evaluation started, follow up drilling expedited for mid-May
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Barton Gold Holdings Limited (ASX:BGD, OTCQB:BGDFF, FRA:BGD3) (Barton or Company) is pleased to announce the results of a preliminary analysis of sample mineralisation collected from drilling at its high-grade Tolmer Silver prospect (Tolmer), located at its South Australian Tarcoola Gold Project (Tarcoola).
Tolmer is one of Australia’s highest-grade modern silver discoveries, identified during 2025 in a discovery hole which yielded a peak intersection of 6m @ 4,747 g/t Ag (plus 4m @ 13.2 g/t Au).
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HIGHLIGHTS
• Preliminary test yields high-grade concentrate grading over 100,000 g/t Ag (10% silver)
• Trial concentrate to support preliminary evaluation of Tolmer petrology and paragenesis utilising scanning electron microscopy (SEM); leading geological consultant engaged
• ~4,000m follow up drilling expedited for May 2026 to infill high-grade assays, test extensions.
The mineralisation from this hole has now been dried, washed with a basic detergent, and panned to produce a concentrate for evaluation utilising scanning electron microscopy, which will assist in designing a full metallurgical testwork program.
This test has produced a concentrate grading >100,000 g/t Ag (~10% silver) from a simple gravity process, without any grinding, roasting or the use of chemical reagents.
The ability to produce exceptionally high-grade concentrates without hydrometallurgical or pyrometallurgical processes could have potential implications for low-cost, high-margin operations if this is consistent for the mineralisation.
Barton has now expedited a ~4,000m RC drilling follow up program, anticipated to begin mid-May 2026.
The objective is to further develop Tolmer’s local geological knowledge, infill data, and test potential extensions indicated by soil assays around numerous drill intercepts exceeding 2,000 gram-metres Ag.
N.B
Barton notes the above results are from a subsample of prepared materials and are not representative of all Tolmer mineralisation.
Comprehensive quantitative metallurgical testwork is required to evaluate potential
commercial viability. Barton has engaged a leading geological consultant to conduct a preliminary evaluation of this Tolmer mineralisation and assist in the design of a detailed metallurgical testwork program.
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Barton MD Alexander Scanlon Commented,
“We are excited to receive these exceptional preliminary concentration results.
“There is clearly something very different going on at Tolmer, not only in terms of the degree of silver enrichment in the oxide and transitional zones, but also as to the dominant presence of primary silver in the veining below the ‘western silver zone’ observed in recent drilling.
“This is entirely distinct from the rest of the Tarcoola Goldfield, where gold is dominant, and raises exciting possibilities.
“Detailed metallurgical testwork is now required, but the prospective ability to concentrate Tolmer’s silver from just a simple, gravity based process is also exciting.
“For context, one tonne of concentrate grading over 100,000 g/t Ag would today contain over $300,000 worth of silver – before attributing any value for contained gold by-product credits.
“Our emerging silver portfolio is a potentially significant contributor to our regional strategy. We are excited to now be accelerating our Tolmer investigation in parallel with programs to upgrade our Tolmer gold and silver Resources.”
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Disclosure
At the time of writing the author holds shares in Barton Gold.
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