Guardian Metal Resources PLC Announces Pilot North: Very-High Grade Assay Results
Rhea-AI Summary
Guardian Metal Resources (OTCQB:GMTLF) has announced exceptional assay results from its 100%-owned Pilot North tungsten-copper project in Nevada. The company collected 92 rock chip samples from the recently staked 102 BLM Lode Claims, revealing significant mineral concentrations including copper grades up to 14.65%, silver up to 708 g/t, and tungsten trioxide up to 0.59%.
The Project, located 15km northwest of the company's Pilot Mountain project, encompasses five historical World War II-era mines: Copper Head, Western Metals, Muller Mountain, Jasper, and Tungsten Valley. The geology mirrors that of Pilot Mountain, with tungsten-copper bearing skarns at granitic intrusion contacts.
This strategic acquisition aligns with Guardian Metal's mission to establish itself as a cornerstone of U.S. tungsten supply, supporting national efforts to reduce foreign supply chain dependence for this critical defense mineral.
[ "Exceptional high-grade assay results with copper up to 14.65%, silver up to 708 g/t, and tungsten trioxide up to 0.59%", "100% ownership with no royalties on the Pilot North project", "Strategic location 15km from existing Pilot Mountain project with shared access road", "Project supports U.S. government's strategic priority for domestic tungsten production", "Multiple historical mines within the property indicating proven mineralization" ]Positive
- None.
Negative
- Project is still in early exploration phase requiring additional geological mapping and potential drilling
- Historical mines indicate previous extraction, potentially limiting remaining resources
- Further exploration work and capital expenditure required to advance the project
News Market Reaction – GMTLF
In the Sep 29 session, GMTLF gained 10.71%, reflecting a significant positive market reaction.
Data tracked by StockTitan Argus on the day of publication.
AI-generated analysis. How Rhea-AI works. Not financial advice.
LONDON, UK / ACCESS Newswire / September 29, 2025 / Guardian Metal Resources plc (LON:GMET)(OTCQB:GMTLF), a strategic development and mineral exploration company focused on tungsten in Nevada, USA, is pleased to provide an exploration update for the recently acquired,
The Company's mission is to establish Guardian Metal as a cornerstone of U.S. tungsten supply, directly supporting national efforts to reshore production of this critical defence mineral. With tungsten designated as a strategic priority by the U.S. government, the Company is advancing its two flagship Nevada projects-Tempiute and Pilot Mountain. By unlocking domestic tungsten resources, Guardian Metal aims to help reduce reliance on foreign supply chains, strengthen U.S. economic and defence security, and deliver long-term value for shareholders.
The Company has now received the assay results for 92 rock chip samples collected during geological fieldwork following the recent staking of Pilot North through direct mining claim staking totalling 102 new Bureau of Land Management ("BLM") Lode Claims, announced 13 August 2025.1 The Project was established as a direct result of the Company's ongoing regional exploration programme.
Oliver Friesen, CEO of Guardian Metal, commented:
"I am very pleased with the progress we have made on Pilot North since our initial staking just a few months ago. The combination of both the high tenor and consistency of the rock chip assay results-particularly in copper, silver, and tungsten-across much of the Project area is very encouraging and, in our view, underscores the potential importance of this developing opportunity for the Company.
"Importantly, this Project is
"We look forward to continuing to move this opportunity forward rapidly, alongside the important work that is currently ongoing at both Pilot Mountain and Tempiute."
TECHNICAL SUMMARY
Pilot North includes the historical World War II-era mines of "Copper Head", "Western Metals", "Muller Mountain", "Jasper" and "Tungsten Valley", each with extensive outcropping tungsten (W) - copper (Cu) bearing skarns at the contact of granitic intrusions with limestones of the Luning Formation (i.e. the same geology as the Company's Pilot Mountain project).
Notably, very high-grade copper, silver, tungsten, zinc and strongly anomalous lead, gallium and gold was returned from multiple areas within the Project including (Table 1):
31 overlimit copper assay results including:
14.65% ,10.6% ,9.21% ,8.86% ,7.22% ,6.92% ,6.89% ,6.78% ,6.7% ,6.27% ,5.56% and5.3% Cu12 overlimit silver assay results including: 708 g/t, 538 g/t, 496 g/t, 319 g/t, 284 g/t, and 276 g/t Ag.
13 overlimit tungsten trioxide (WO3) assay results including:
0.59% ,0.46% ,0.40% ,0.36% , and0.36% WO3.Additionally, gold results up to 1.025 ppm Au, gallium results up to 49 ppm Ga, zinc results up to
12% Zn, and lead results up3.81% Pb.
The Company shortly will be undertaking detailed geological mapping of the most prospective areas to guide the next exploration steps which may include geophysical surveys and diamond drilling.
BACKGROUND
Pilot North is located approximately 15 km northwest of the Company's co-flagship Pilot Mountain project and shares the same road access. Pilot North comprises five distinct areas: Copper Head, Western Metals, Muller Mountain, Tungsten Valley and Jasper. The Company considers that these all represent genetically related tungsten-copper-polymetallic skarn mineralisation at the contacts of granitic intrusions with limestones of the Luning Formation, a similar geological setting to the deposits at Pilot Mountain.
Following initial reconnaissance and staking of Pilot North, the Company's expert geological consultant, Dr Lawrence Carter, undertook detailed geological mapping and sampling across the Project to characterise the mineralisation and to develop strategies to advance Pilot North as a satellite to the Company's flagship Pilot Mountain project. From this fieldwork, 92 rock chip sampled were assayed at ALS USA Inc laboratories using the following analytical packages: ME-MS61 for multielement, Au-ICP21 for gold, ME-XRF15c for high grade WO3 and Ag/Cu/Pb/Zn-OG62 for overlimit samples (see Table 1).
Table 1. Summary of Rock Chip Sample Assay Results
SAMPLE | Au | Ag | Ag | Cu | Cu | Pb | Pb | Ga | Zn | Zn | WO3 |
Unit | ppm | ppm | ppm | ppm | % | ppm | % | ppm | ppm | % | % |
ALS Lab Method | Au-ICP21 | ME-MS61 | Ag-OG62 | ME-MS61 | Cu-OG62 | ME-MS61 | Pb-OG62 | ME-MS61 | ME-MS61 | Zn-OG62 | ME-XRF15c |
LCCH01 | 0.13 | 8 | 3 | 23 | 25 | ||||||
LCCH02 | 52.90 | 2.58 | 12 | 31 | 336 | ||||||
LCCH03 | 81.20 | 4.01 | 4 | 23 | 1,990 | ||||||
LCCH04 | 55.20 | 3.34 | 4 | 13 | 1,450 | ||||||
LCCH05 | 3.13 | 1,840 | 3 | 17 | 188 | ||||||
LCCH06 | 115 | 2.29 | 155 | 11 | 554 | ||||||
LCCH07 | 86.10 | 2.56 | 5 | 12 | 1.17 | ||||||
LCCH08 | 2.61 | 754 | 8 | 17 | 420 | ||||||
LCCH09 | 0.45 | 141 | 13 | 32 | 373 | ||||||
LCCH10 | 30.70 | 5.56 | 251 | 12 | 1.15 | ||||||
LCCH11 | 1.03 | 97.00 | 2.80 | 4 | 24 | 578 | |||||
LCCH12 | 0.05 | 12.05 | 3,910 | 3 | 24 | 182 | |||||
LCCH13 | 0.01 | 5.45 | 1,860 | 207 | 18 | 648 | |||||
LCCH14 | 201 | 14.65 | 2,850 | 2 | 1.30 | ||||||
LCCH15 | 708 | 7,970 | 3.81 | 17 | 2,880 | ||||||
LCCH16 | 231 | 2,080 | 6,260 | 17 | 3,060 | 0.19 | |||||
LCCH17 | 538 | 658 | 3.19 | 18 | 9,210 | 0.59 | |||||
LCCH18 | 0.05 | 48.50 | 2.27 | 130 | 24 | 236 | |||||
LCCH19 | 3.46 | 188 | 209 | 16 | 89 | ||||||
LCCH20 | 2.33 | 1,120 | 48 | 16 | 161 | ||||||
LCCH21 | 0.61 | 5.30 | 13 | 1 | 733 | ||||||
LCCH22 | 1.22 | 6,020 | 19 | 34 | 141 | ||||||
LCCH23 | 0.44 | 7.22 | 7 | 14 | 442 | ||||||
LCCH24 | 13.50 | 2,320 | 8 | 15 | 46 | ||||||
LCCH25 | 1.85 | 918 | 10 | 18 | 47 | ||||||
LCCH26 | 2.94 | 624 | 84 | 29 | 170 | ||||||
LCCH27 | 0.75 | 601 | 11 | 18 | 31 | ||||||
LCJA01 | 41.00 | 123 | 1,520 | 14 | 46 | ||||||
LCJA02 | 0.30 | 58 | 16 | 17 | 6 | ||||||
LCJA03 | 1.04 | 65 | 19 | 6 | 11 | ||||||
LCJA04 | 0.21 | 41 | 14 | 1 | 28 | ||||||
LCJA05 | 4.38 | 1,055 | 8 | 2 | 981 | ||||||
LCMM01 | 0.01 | 0.93 | 429 | 3 | 20 | 384 | |||||
LCMM02 | 4.44 | 7,180 | 5 | 16 | 753 | ||||||
LCMM03 | 1.26 | 1,205 | 5 | 11 | 291 | ||||||
LCMM04 | 0.01 | 4.05 | 2,290 | 13 | 19 | 179 | |||||
LCMM05 | 0.76 | 286 | 5 | 20 | 73 | ||||||
LCMM06 | 6.22 | 1,140 | 11 | 21 | 68 | ||||||
LCMM07 | 0.00 | 1.62 | 1.76 | 4 | 31 | 346 | 0.14 | ||||
LCMM08 | 0.19 | 172 | 4 | 34 | 23 | ||||||
LCMM09 | 24.50 | 1.87 | 4 | 10 | 1.36 | ||||||
LCMM10 | 0.81 | 857 | 6 | 22 | 633 | ||||||
LCMM11 | 0.10 | 319 | 6.78 | 1,530 | 7 | 2,080 | 0.14 | ||||
LCMM12 | 1.24 | 222 | 11 | 18 | 336 | ||||||
LCMM13 | 1.81 | 463 | 18 | 14 | 118 | ||||||
LCMM14 | 0.26 | 89 | 13 | 16 | 139 | ||||||
LCMM15 | 0.35 | 143 | 13 | 13 | 116 | ||||||
LCMM16 | 5.59 | 1,405 | 27 | 16 | 306 | ||||||
LCMM17 | 0.12 | 79.90 | 2.08 | 457 | 3 | 4,590 | 0.11 | ||||
LCMM18 | 2.77 | 670 | 73 | 17 | 1,665 | ||||||
LCMM19 | 59.00 | 3.05 | 691 | 12 | 1.57 | ||||||
LCMM20 | 59.80 | 1.29 | 78 | 7 | 2,360 | ||||||
LCMM21 | 0.00 | 8.35 | 1,470 | 231 | 2 | 1.03 | |||||
LCMM22 | 84.90 | 9.21 | 102 | 14 | 12.00 | 0.46 | |||||
LCMM23 | 496 | 6.70 | 1,920 | 3 | 4,660 | ||||||
LCMM24 | 215 | 8.86 | 31 | 7 | 9,990 | 0.19 | |||||
LCMM25 | 6.59 | 1,450 | 47 | 22 | 250 | ||||||
LCMM26 | 284 | 6.92 | 39 | 8 | 1.61 | ||||||
LCMM27 | 2.43 | 2,530 | 21 | 18 | 1,375 | ||||||
LCMM28 | 37.80 | 2.95 | 84 | 32 | 1,265 | ||||||
LCMM29 | 0.40 | 155 | 3 | 46 | 233 | ||||||
LCMM30 | 133 | 2.99 | 688 | 36 | 6,560 | 0.36 | |||||
LCTV01 | 0.49 | 248 | 32 | 18 | 167 | 0.24 | |||||
LCTV02 | 2.32 | 791 | 23 | 50 | 209 | ||||||
LCTV03 | 30.90 | 8,120 | 986 | 34 | 534 | 0.19 | |||||
LCTV04 | 3.69 | 1,290 | 243 | 10 | 551 | ||||||
LCTV05 | 24.50 | 351 | 1,810 | 9 | 335 | 0.27 | |||||
LCTV06 | 14.15 | 1,770 | 14 | 16 | 101 | ||||||
LCTV07 | 0.48 | 354 | 15 | 16 | 64 | ||||||
LCWM01 | 276 | 4.51 | 1,275 | 35 | 2,880 | ||||||
LCWM02 | 7.19 | 3,220 | 32 | 44 | 358 | ||||||
LCWM03 | 25.10 | 3.09 | 9 | 16 | 1,875 | ||||||
LCWM04 | 0.07 | 132 | 6.89 | 31 | 12 | 1,120 | |||||
LCWM05 | 0.61 | 395 | 4 | 12 | 62 | ||||||
LCWM06 | 0.01 | 33.80 | 2.48 | 23 | 10 | 1,085 | |||||
LCWM07 | 0.01 | 6.81 | 6.27 | 3 | 6 | 1,955 | |||||
LCWM08 | 19.30 | 4.12 | 3 | 20 | 6,890 | ||||||
LCWM09 | 0.34 | 730 | 1,030 | 3 | 1.52 | ||||||
LCWM10 | 0.04 | 0.80 | 7,620 | 6 | 18 | 3,270 | |||||
LCWM11 | 0.18 | 68.50 | 668 | 8,030 | 2 | 980 | |||||
LCWM12 | 0.53 | 14.55 | 304 | 1,705 | 2 | 234 | |||||
LCWM13 | 0.13 | 71.60 | 131 | 2,460 | 1 | 209 | |||||
LCWM14 | 0.53 | 94.40 | 1.06 | 3,840 | 1 | 284 | |||||
PZMM01 | 91.20 | 10.60 | 21 | 10 | 2,700 | ||||||
PZMM02 | 0.64 | 361 | 22 | 24 | 75 | ||||||
PZMM03 | 0.91 | 740 | 8 | 28 | 85 | ||||||
PZMM04 | 0.16 | 65 | 12 | 18 | 83 | ||||||
PZMM05 | 0.19 | 49 | 6 | 22 | 100 | ||||||
PZMM06 | 0.11 | 23 | 10 | 19 | 73 | ||||||
PZMM07 | 0.05 | 24.20 | 3,740 | 7 | 27 | 241 | 0.36 | ||||
PZMM08 | 25.10 | 3,900 | 7 | 27 | 257 | 0.40 | |||||
HRWM0625 | 0.35 | 237 | 11 | 42 | 253 |
Table Notes :Summary of certificated assay results provided by accredited laboratory ALS USA Inc. ppm: parts per million, 10,000 ppm =
MEDIA
Figure 1.Example of copper oxide rich garnet skarn outcropping on the Pilot North project.
Figure 2.Example of historical mine workings on the Pilot North project targeting garnet skarns.
Figure 3.Visible light and ultraviolet (UV) light view of copper oxide and scheelite rich skarn from the Muller Mountain area.
PROPERTY OWNERSHIP
Guardian Metal holds a royalty free,
COMPETENT PERSON STATEMENT
The technical information contained in this disclosure has been read and approved by Mr Nick O'Reilly (MSc, DIC, MIMMM QMR, MAusIMM, FGS), who is a qualified geologist and acts as a Competent Person under the AIM Rules - Note for Mining and Oil & Gas Companies. Mr O'Reilly is a Principal consultant working for Mining Analyst Consulting Ltd which has been retained by Guardian Metal to provide technical support.
References
1 Company Announcement, Pilot North: Enlargement following Assay Results, dated 13 August 2025
(https://polaris.brighterir.com/public/guardian_metal_resources/news/rns/story/w106z3r)
2 Company Announcement, Pilot North Tungsten Project Acquired via Staking, dated 7 July 2025 (https://polaris.brighterir.com/public/guardian_metal_resources/news/rns/story/wveg0px)
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:
Guardian Metal Resources plc Oliver Friesen (CEO) | Tel: +44 (0) 20 7583 8304 |
Cairn Financial Advisers LLP Nominated Adviser Sandy Jamieson/Jo Turner/Louise O'Driscoll | Tel: +44 20 7213 0880 |
Shard Capital Partners LLP Lead Broker Damon Heath/Erik Woolgar | Tel: +44 (0) 20 7186 9000 |
This information is provided by RNS, the news service of the London Stock Exchange. RNS is approved by the Financial Conduct Authority to act as a Primary Information Provider in the United Kingdom. Terms and conditions relating to the use and distribution of this information may apply. For further information, please contact rns@lseg.com or visit www.rns.com.
SOURCE: Guardian Metal Resources PLC
View the original press release on ACCESS Newswire