Guardian Exploration Completes 2025 Field Program at Sundog Gold Project
November 12, 2025 — Leads & Copy — Guardian Exploration Inc. (TSXV: GX) (OTCQB: GXUSF) (Frankfurt: R6B) has announced the successful completion of its 2025 field program at the Sundog Gold Project in the Kivalliq Region of Nunavut, reporting significant gold assay results.
Guardian’s Sundog property spans 94.15 km² (23,265 acres) within the central Ennadai–Rankin Archean greenstone belt, a major Neoarchean supracrustal complex. The property comprises volcaniclastics, mafic volcanic flows, and clastic sedimentary units deformed by Paleoproterozoic shear zones. The Sundog and Esker Gold projects are located within the Central Hearne domain of the Hearne Craton, part of the Western Churchill Province of the Canadian Shield.
The Ennadai–Rankin greenstone belt, covering more than 100,000 km² (38,610 sq. miles), hosts several significant deposits and gold-bearing systems, including the world-class Meliadine mine, which has produced over 2 million ounces of gold and contains an additional 7+ million ounces in reserves and resources (Agnico Eagle, 2024). The region also includes the historic Cullaton Lake mine, which produced approximately 200,000 ounces of gold during its operation from 1981 to 1985.
The 2025 Sundog field program, conducted from September 1 to October 7, included geological mapping, structural interpretation, trenching, prospecting, and grid establishment across the northern portion of the property. A total of 248 rock samples were collected, including 86 cut channel samples from historic trenches 8, 9B, 10, 17 and 29. The program confirmed multiple gold-bearing structures and expanded the known footprint of mineralization.
Guardian established a 10-12 person field camp at the Cullaton lake airstrip, adjacent to the historic Cullaton Lake mine, and located 18km SW of the Sundog exploration area, which will be used for planned 2026 field work. The airstrip was used in 2025 for landing DC-3 fixed wing aircraft, and historically has served larger cargo planes.
The Sundog gold occurrence was first discovered in 1962. Work by Abermin Corporation in 1987 included detailed geological mapping, VLF ground geophysics, a humus geochemical survey, and excavation and mapping of 38 hand trenches. As part of Guardian’s 2025 field work program, all historical trenches from 1987 Sundog work programs were relocated with the objective of confirming historical work and observations, as well as resampling of significant gold-bearing intervals within historical trenches.
Three new trenches were excavated and sampled (9B, 40 and 41) and 9 historical trenches were re-excavated, enlarged, and sampled (8, 9, 10, 11, 12, 17, 29, 30 and 31). Numerous grab and channel samples returned >10 g/t Au, with peak values up to 34.45 g/t Au.
Two significant conclusions from a report produced by Scott Anderson, Ph.D., P.Geo., following a site visit from Sept 18 – 22, include that gold-bearing veins at Sundog are mainly hosted in competent mafic–intermediate intrusive sills with weak to negligible ductile fabrics. Veins are primarily associated with steep NNE–SSW brittle-dominant structures.
Initial grab sampling included 162 samples of quartz vein and mafic volcanic wall rock from float, outcrop and trenches. Highlights of channel sampling include samples from Trenches 8 and 9B, located about 260m north of Trench 10, have returned results confirming analyses from previous workers and extending gold mineralization to the south of excavations by previous workers, almost doubling the strike length from 8.8m to 15.4m. Trench 10 was re-excavated and enlarged, extending the strike length of vein-hosted gold mineralization from 15.5m in 1987 to at least 40m.
Trench 17 has returned anomalous to low-grade gold in almost every sample collected, showing potential as a lower-grade larger target. Observations and sampling from Trench 30 and 31 confirm that gold is present in narrow quartz veins crosscutting or parallel to shallow dipping foliation in foliated fine grained mafic volcanic rocks.
Guardian’s 2025 samples were analyzed at Paragon Analytical Ltd. using the PhotonAssay™ method and are being submitted for multi-element analysis (4-acid digestion with ICP-MS 48 element analysis) by Paragon’s facilities in Reno, Nevada. All samples returning >0.5 g/t Au are being re-analyzed using Screen Metallic Fire Assay with AAS finish to confirm grade distribution and validate PhotonAssay™ results. Results are pending.
Exploration plans for 2026 field work include expansion of the historically gridded area, additional geological mapping, soil sampling, trenching, drone geophysics (magnetics and radiometrics), and diamond drilling.
Graydon Kowal, President and CEO, said that the 2025 field work at Sundog delivered encouraging results in a highly fertile gold field. He added that the results confirm the presence of high-grade gold, and visible coarse gold observed in the field supports our interpretation of a nuggety system.
The technical information in this news release has been reviewed and approved by Steven Dudka, P.Geo., a Qualified Person as defined under National Instrument 43-101.
FOR FURTHER INFORMATION PLEASE CONTACT: Graydon Kowal President & Chief Executive Officer Tel: (403) 730-6333
Source: Guardian Exploration Inc.
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