Guardian Metal Resources PLC Announces Garfield Project Exploration Update

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Garfield Project - Precious Metal Exploration Update

LONDON, UK / ACCESS Newswire / November 3, 2025 / Guardian Metal Resources plc ('Guardian Metal' or the 'Company')(LON:GMET)(OTCQB:GMTLF), a strategic mineral exploration and development company focused on tungsten in Nevada, U.S., is pleased to provide an update for the Company's Garfield gold-silver-copper project ("Garfield" or the "Project") located in the Walker Lane Mineral Belt, Nevada.

Guardian Metal's mission is to establish its co-flagship projects, Tempiute and Pilot Mountain, as the cornerstone of U.S. tungsten supply, directly supporting national efforts to reshore mined production. This is intended to help the U.S. reduce reliance on foreign supply chains, strengthen economic and defence security, while delivering long-term value for shareholders.

In parallel to advancing the tungsten projects, the Company has undertaken early-stage exploration across its gold assets, by cost-effective means, to further enhance shareholder value. With the strengthening gold market, interest in Guardian Metal's Nevada-based precious metal projects, Garfield and Golconda, has dramatically increased.

Recent surface sampling of epithermal veins across the Power Line zone has revealed further zones of high-grade gold, silver and copper mineralisation. The Company has also staked 42 additional Bureau of Land Management ("BLM") lode mining claims over an expansive Freeze North zone which covers hydrothermally altered rhyolites hosting numerous epithermal quartz-barite veins, partly obscured by post-mineral volcanic cover. Furthermore, a recently completed induced polarisation ("IP") geophysical survey focused on the Freeze and Freeze East zones has identified compelling drill targets under alluvial cover, located directly along strike from historic high-grade gold-silver underground mine workings.

TECHNICAL HIGHLIGHTS

Oliver Friesen, CEO of Guardian Metal, commented:

"We are very encouraged by the expanding scale of the epithermal system at the Garfield Project following Dr. Carter's recent site visit. High-grade rock chip assay results from the Power Line zone, combined with the mapping completed, has revealed a much larger alteration footprint than previously recognised. This work has led to the staking of the new Freeze North zone, extending the trend to more than 4 km in strike, and to the definition of compelling drill targets at the Freeze East and Freeze zones.

"While tungsten remains our core focus at Guardian Metal, recent results from both Garfield and Golconda underscore the value of our diversified portfolio. We will continue to advance, and assess, our Nevada gold assets in a disciplined way, ensuring any future partnerships are structured to maximise value for our shareholders. Together with our co-flagship tungsten assets, Garfield and Golconda provide additional optionality and exposure to the broader resurgence of U.S. mining."

FURTHER INFORMATION

The Company has retained Dr Lawrence Carter to review the potential for high-grade precious metal epithermal mineralisation across the Garfield project. Previously reported findings (announced 24 April 20251 and 3 June 20252) include high grade gold-silver-copper-antimony (Au-Ag-Cu-Sb) mineralisation in epithermal veins at the Pamlico zone (e.g. 47 g/t Au and 1.84% Sb), high grade Au-Ag-Cu mineralisation (e.g. 61 g/t Au) in the Freeze zone as well as outcropping silica-adularia alteration in rhyolite and volcanic breccias in the subsequently staked Freeze East zone.

Building on that success, Dr Carter has been further reappraising and sampling epithermal-style mineralisation and alteration across the Project, resulting in the Company staking the Freeze North zone. Based on the geological findings to date including multiple high-grade rock chip sample assays, the Company also recently completed two-dimensional induced polarisation (2DIP) geophysical surveys across the Freeze and Freeze East zones which has led to the identification of compelling drill targets. Geological findings and sample assay results from the Power Line and Freeze North zones as well as the preliminary results of the IP survey are reported below.

HIGH GRADE EPITHERMAL AU-AG-CU MINERALISATION IN THE POWER LINE ZONE

Outcropping epithermal quartz-barite veins and numerous historical mine workings have now been mapped along a NE-SW trending structure extending for at least 1.2 km. Rock chip samples were collected from various locations along strike (Figure 1 & 2). Highlight sample assays include: 18.3 g/t Au & 43.6 g/t Ag; 145 g/t Ag & 14% Cu; 1.37g/t Au & 1.23% Cu; and 190 g/t Ag (Table 1).

EXTENSIVE HYDROTHERMAL ALTERATION ACROSS THE NEWLY STAKED FREEZE NORTH ZONE

The Company has now staked an additional 42 BLM lode mining claims over the Freeze North zone (Figure 1). Here, geological field mapping identified extensive silicic and argillic hydrothermal alteration in rhyolites, which is almost entirely covered by thin post mineral basaltic lava flows. This alteration is suggestive of an epithermal system. Quartz-barite epithermal veins occur across the area, along with historical mining activity. Rock chip samples show the hydrothermally altered rhyolite is elevated in barium (Ba) and arsenic (As) (e.g. 3x samples of various altered rhyolite outcrops which returned 950 ppm, 2,060 ppm and 2,180 ppm Ba and 106 ppm, 99 ppm and 21 ppm As), which suggests that the area represents the shallow part of a mineralised system and has been subject to significant hydrothermal fluid flow.

CHARGABLE GEOPHYSICAL ANOMALIES FROM 2DIP IN THE "FREEZE" AND "FREEZE EAST" ZONES

The Company recently completed a two-dimensional induced polarisation (2DIP) geophysical survey, across two lines spaced 450 m apart in the Freeze and Freeze East zones (Figure 1 & 3). In the Freeze zone, the 2DIP survey was centred on a historically mined epithermal high-grade precious metal mineralised E-W trending structure. Previously reported highlight grab samples from these mine workings include: 61.0 g/t Au, 149 g/t Ag and 2.38% Cu; 11.2 g/t Au, 83.0 g/t Ag and 4.92% Cu; 11 g/t Au, 149 g/t Ag and 137 g/t Ag (reported 3 September 20243 and 3 June 20252).

In the Freeze East zone, the 2DIP survey covered an outcropping mound of silica-adularia altered rhyolitic volcanic breccia which contains elevated barium (e.g. rock chip samples containing 1,870 ppm, 2,130 ppm and 2,780 ppm barium suggesting extensive hydrothermal fluid flow) which is obscured by alluvial cover (Figure 1 & 3). In the 2DIP results, two subvertical chargeable features are highlighted on either side of this silicified mound. These are both under the alluvial cover, and are along strike from the historical mine workings described above. The Company views both of these chargeable features as compelling drill targets for sub-cropping high-grade epithermal mineralisation.

ADVANCING THE PROJECT

The latest findings from across the further expanded Project area, together with the results previously reported, provide hallmarks of a potentially significant epithermal precious-metal mineralised system which is largely obscured by post-mineral cover 1,2,3. Key features observed in windows through the post-mineral cover, consistent with world-class epithermal systems include: outcropping silicic, argillic and silica-adularia alteration in rhyolites and volcanic breccias; widespread outcropping barren quartz-calcite-barite veins and opaline-chalcedonic quartz veins; elevated Ba and As in hydrothermally altered rhyolites; numerous fault structures which have been mineralised by epithermal fluids; outcropping hydrothermal breccias; outcropping and previously mined very high grade Au-Ag-Cu-Sb epithermal veins; resistive and chargeable features in IP surveys. These features are suggestive that the shallow levels of a low- or intermediate-sulphidation epithermal system is exposed across the Garfield project.

Based on interpretation to date, the narrow high-grade epithermal veins seen at surface, either continue to depth and along fault structures, or grade into broader zones of lower-grade stockwork mineralisation.

The wider Walker Lane Belt, in which Garfield is located, has numerous analogous epithermal systems with ongoing economic and/or exploration success including Fortitude Gold's Isabella Pearl mine (located 20 km to the north west of the Project), Headwater Gold's Spring Peak/Lodestar projects, and the significant past producing mines of Borealis (located 30 km to the south west of Garfield) and Hecla's Aurora mine. The Company is therefore eager to see value unlocked from Garfield to the benefit of Guardian Metal's shareholders.

Whilst drill targets are now confirmed by 2DIP in the Freeze and Freeze East zones, further geophysical surveys would be valuable in the search for potentially sub cropping mineralised structures in other areas across the Project where hydrothermally altered rhyolites are partly covered by post-mineral basalts, such as in the newly staked Freeze North zone as well as in the Pamlico zone.

Table 1: Assay data for new rock chip samples collected from across the Project

Table Note: Assayed by ALS USA Inc using analytical methods ME-MS61 and Au-AA25, with over limits by Ag-OG62, Cu-OG62 and Pb-OG62.

MEDIA

1. Company announcement, Garfield-High-Grade Gold-Silver-Antimony and New Claims Staked across Epithermal System, dated 24 April 2025: ( https://www.londonstockexchange.com/news-article/GMET/garfield-project-exploration-update/17003867 )

2. Company announcement, Garfield-Very High-Grade Gold-Silver-Copper Assay Results, dated 3 June 2025: ( https://www.londonstockexchange.com/news-article/GMET/garfield-project-exploration-update/17067301 )

3. Company announcement, Garfield-High Grade Assays & New Zone Discovered, dated 3 September 2024: ( https://www.londonstockexchange.com/news-article/GMET/garfield-high-grade-assays-new-zone-discovered/16646187 )

This announcement contains inside information for the purposes of Article 7 of EU Regulation 596/2014 (which forms part of domestic UK law pursuant to the European Union (Withdrawal) Act 2018).

Forward Looking Statements

This announcement contains forward-looking statements relating to expected or anticipated future events and anticipated results that are forward-looking in nature and, as a result, are subject to certain risks and uncertainties, such as general economic, market and business conditions, competition for qualified staff, the regulatory process and actions, technical issues, new legislation, uncertainties resulting from potential delays or changes in plans, uncertainties resulting from working in a new political jurisdiction, uncertainties regarding the results of exploration, uncertainties regarding the timing and granting of prospecting rights, uncertainties regarding the timing and granting of regulatory and other third party consents and approvals, uncertainties regarding the Company's or any third party's ability to execute and implement future plans, and the occurrence of unexpected events.

Actual results achieved may vary from the information provided herein as a result of numerous known and unknown risks and uncertainties and other factors.

For further information visit www.guardianmetalresources.com or contact the following:

About Guardian Metal Resources

Guardian Metal Resources PLC (LON: GMET, OTCQX: GMTLF) is a strategic mineral exploration and development company driving the revival of U.S. tungsten production and strengthening America's independence in defense metals. The Company is advancing two co-flagship tungsten projects, Pilot Mountain, one of the largest undeveloped tungsten deposits in the U.S. and Tempiute, formerly America's largest producing tungsten operation, both located in Nevada, one of the top-rated mining jurisdictions in the U.S.

In July 2025, Golden Metal Resources (USA) LLC, a wholly-owned subsidiary of Guardian Metal, was awarded US$6.2M from the U.S. Department of War under Title III of the Defense Production Act of 1950 to support the rapid advancement and pre-feasibility study for the Pilot Mountain tungsten Project. Guardian Metal Resources joined both the Defense Industrial Base Consortium and the Cornerstone Program. The Company has also announced plans to pursue a U.S. listing in the first half of 2026.

Tungsten is a strategic mineral essential to the defense, energy transition, technology, and industrial sectors. Against the backdrop of evolving geopolitical dynamics and Chinese export restrictions on tungsten, Guardian is positioned to play the leading role in rebuilding a reliable domestic supply chain for this critical metal.

To learn more, please visit www.guardianmetalresources.com.

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SOURCE: Guardian Metal Resources PLC