New Geophysical Modeling at Talisman Tungsten Property Delineates Three Drill Targets
Vancouver, British Columbia — June 16, 2026 — Leads & Copy — Adamera Minerals Corp. has identified three promising drill targets at its Talisman tungsten property in Washington State following new geophysical modeling. The company utilized 3D inversion modeling of ground magnetic data to delineate deep magnetic features that are interpreted to potentially be associated with tungsten-copper-silver mineralization.
The modeling indicates a magnetic anomaly near the historic Talisman mine extends approximately 1000 metres along strike and to depths of up to 200 metres below the mine workings. This suggests the potential for stacked skarn horizons beneath the historically mined deposit. The presence of surface mineralization at different elevations on the property further supports the possibility of a significantly larger mineralized system than previously recognized.
The Talisman Mine was a historical producer of high-grade tungsten, copper, and silver, with production grades reported to average around 5% copper, 103 g/t silver, and 0.35% to 1.0% WO₃. During World War II and the Korean War, the mine supplied U.S. military applications. Historic records indicate 600 metres of mine development, with the only recorded drilling consisting of short holes near underground stope development. No modern exploration drilling has been conducted on the property.
The new 3D inversion results show that the magnetic body associated with the historic mine extends nearly one kilometre along strike and continues to depths exceeding 200 metres. Additionally, two new undrilled magnetic targets have been identified elsewhere on the property.
“Historically, the mine exploited only a very small portion of what now appears to be a much larger mineralized system,” stated Mark Kolebaba, President and CEO of Adamera Minerals. “We have long known that the magnetic anomaly extended beyond the mine workings laterally. What this inversion confirms is that it also extends to depth below the historic workings. We have also identified two other undrilled anomalies, one centered on a surface sample of 0.33% WO₃. A third target lies below multiple high-grade copper-silver samples collected at the surface. Field crews are mobilizing this month to advance the targets towards drill testing.”
Adamera has defined three priority drill targets based on the 3D magnetic inversions:
Target 1 – Mine Zone (Primary Drill Target): This target is characterized by a high-susceptibility body coincident with the historic mine area, extending approximately 1 kilometre along strike and to depths exceeding 200 metres, remaining open at depth. Historic mining occurred on the eastern flank of this anomaly, a position often associated with high-grade replacement mineralization in skarn systems, making it the highest-priority target.
Target 2 – Southern Discovery: Located approximately 720 metres south of the historic mine, this target features a discrete magnetic anomaly coincident with a surface rock sample returning 0.33% WO₃. It shows a modelled depth extent of over 200 metres and has not been historically drilled, trenched, or underground developed. The coincidence of a high-grade surface sample with a depth-persistent magnetic body is consistent with a buried, potentially mineralized skarn.
Target 3 – Central-Western Anomaly: This target is a large magnetic body in the central-western part of the property, exhibiting a strong dipolar magnetic response typical of magnetite-bearing skarn systems. Surface cover has limited historic prospecting and sampling in this area, though elevated copper values have been identified. A structural lineament links this anomaly to the mine zone target, suggesting a common hydrothermal source.
A field program is scheduled for June 2026, with crews mobilizing to advance the targets toward drill testing. Planned work includes systematic soil and rock sampling, geological mapping of magnetic gradient zones, and VLF-EM surveying to identify conductive sulphide-bearing structures and alteration halos.
The Talisman Tungsten Property hosts a historic copper-silver-tungsten skarn deposit in Washington State. To the best of the Company’s knowledge, no exploration drill holes have ever been completed on the property.
The technical content of this release has been reviewed and approved by Martin St. Pierre, P.Geo., a Qualified Person as defined by National Instrument 43-101.
Adamera Minerals Corp. is focused on advancing its tungsten portfolio in Washington State to contribute to a secure domestic supply for U.S. markets, employing modern exploration methodologies to discover and define economic mineral resources.
Source: Adamera Minerals Corp.
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