CEO.CA Chairman's Briefing

(TheNewswire)

Vancouver, British Columbia – TheNewswire -  October 21, 2025 – Adamera Minerals Corp. (TSX-V: ADZ; OTC: DDNFF) ("Adamera" or the "Company") reports that it will offer for joint venture its Talisman Copper -Silver - Tungsten Property, located near Laurier, Washington, which includes the historic Talisman tungsten mine.  Talisman is not core to the Company’s business, although in light of increased demand for critical minerals the project warrants exploration.  Adamera has conducted a mineral potential review of the property where grades of 0.35–1.0% WO₃ have been reported. (1)

Why Tungsten?

Tungsten is considered a critical mineral by many countries and organizations, including the United States, the European Union, Canada and the United Kingdom. Its critical status is due to its importance in ballistics, aerospace and technology. Tungsten has unique properties including its extreme hardness and high melting point.  It has not been mined commercially in the USA since 2015, with most supplies being sourced from China. 

Work by Adamera on the Talisman Property has focused on the presence of high-grade copper and silver mineralization.  Limited attention has been paid to historically mined tungsten-bearing (scheelite) skarn zones in the Talisman Tungsten Mine.  The mine was a key tungsten producer during World War II, supplying strategic metal for U.S. military applications.  Specifically, scheelite occurs in garnet-epidote skarn along the contact between limestone and intrusive rocks.  Selected samples from the workings contain between 0.35 and 1.0 % WO₃, with local samples reported to assay higher. (1)  In addition to high-grade tungsten, smelter records from the Talisman Mine report high-grade copper and silver averaging 5% and 103 g/t, respectively. Specific zones also contained Pb up to 20% and Zn up to 11%. (1) (2)

“The Talisman Property is a critical minerals opportunity. Our work confirms the presence of a polymetallic mineralized system that contains tungsten, copper, silver, lead, zinc and bismuth. Such mineralization has been observed at shallow depths.  Our work paid little attention to tungsten on a stand-alone basis.  What did attract our interest was a newly recognized copper-silver target. Exploration has demonstrated that the mineralizing system extends well beyond the old tungsten mine workings, with clear potential for the discovery of a much larger polymetallic deposit” states Mark Kolebaba, President and CEO of Adamera Minerals Corp.

Surface sampling, mapping, and geophysical interpretation by Adamera demonstrate that the copper, silver, zinc and lead mineralization extends well beyond the historic mine and is suggestive that tungsten may do the same. Recent exploration on the property highlights several significant metal values as listed in Table 1:

Table 1. – Shows range of significant values of various metals in rock samples on the property that are located 700 to 1500 metres from the mine. Zones with elevated tungsten (100 to 2600 ppm) and Bismuth (100 to 2850 ppm) have been identified and not yet followed up.  

The Talisman Mine is hosted within carbonate rocks intruded by granite and diorite bodies, forming extensive skarn alteration along contact zones. Adamera’s mapping has outlined:

• A 1.5-kilometre mineralized corridor with copper-silver-lead-zinc +/-tungsten occurrences; 

• Multiple magnetic anomalies coinciding with surface mineralization; 

• Continuity of alteration and mineralization beyond the historic mine workings. 

The Company believes the skarn system remains open along strike and at depth, with significant untested potential beneath a likely barren rock unit. A drill program has been prepared to test below and along strike of the former mine workings, targeting both high-grade scheelite zones and associated copper-silver-bearing sulphides. Additional work will include: systematic soil and rock geochemistry focusing on tungsten and detailed EM survey.

Plan is to Joint Venture the Property

The Talisman Property represents one of the few known past-producing tungsten sites in Washington State, now recognized as having strong potential for re-development under modern critical-minerals initiatives. The combination of historical tungsten production and newly identified copper-silver enrichment positions Talisman as a strategic exploration asset in a geopolitically secure jurisdiction. The current plan is to entertain joint venture proposals to continue exploration on the property, allowing the Company to focus on its gold assets.

Gordon Gibson (P.Geo.), qualified person under NI 43-101, is an independent consultant that has reviewed and approved data associated with this release.

Rock samples were analyzed at Act Labs.

About Adamera

Adamera Minerals Corp. is exploring for a high-grade gold deposit in Canada and USA.

On behalf of the Board of Directors,
Mark Kolebaba
President & CEO

For additional information please contact:

Email: info@Adamera.com
Website: www.Adamera.com
Phone: (604) 689-2010

(1) Pryor, W. A., & Logan, M. H. (1951) Tungsten Deposits of Washington. Washington Division of Mines and Geology Bulletin No. 37

(2) Talisman Mine (MRDS#10042380) http://mrdata.usgs.gov/mrds

Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release. The TSX Venture Exchange has not reviewed and does not accept responsibility for the adequacy or accuracy of this release. Statements in this press release, other than purely historical information, including statements relating to the Company’s future plans and objectives or expected results, may include forward-looking statements. Forward-looking statements are based on numerous assumptions and are subject to all of the risks and uncertainties inherent in resource exploration and development. As a result, actual results may vary materially from those described in the forward-looking statements.

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