Calgary, Alberta - Guardian Exploration Inc. (TSXV: GX) (OTCQB: GXUSF) (Frankfurt: R6B) ('Guardian' or the 'Company') is pleased to announce the successful completion of its 2025 field program at the Sundog Gold Project in the Kivalliq Region of Nunavut and to report significant gold assay results.
Guardian's Sundog property spans 94.15 km-2 (23,265 acres) within the central Ennadai-Rankin Archean greenstone belt, a major Neoarchean supracrustal complex comprising volcaniclastics, mafic volcanic flows, and clastic sedimentary units that were later deformed by Paleoproterozoic shear zones. Guardian's Sundog and Esker Gold projects lie within the Central Hearne domain of the Hearne Craton, part of the Western Churchill Province of the Canadian Shield-an area that preserves one of the world's largest and most prospective Archean greenstone terranes.
The Ennadai-Rankin greenstone belt covers more than 100,000 km-2 (38,610 sq. miles) and represents both a regionally extensive stratigraphic package and a major gold metallotect. It hosts several significant deposits and gold-bearing systems, most notably the world-class Meliadine mine, which has produced more than 2 million ounces of gold and contains an additional 7+ million ounces in reserves and resources (Agnico Eagle, 2024).
Additionally, the region includes the historic Cullaton Lake mine, located near the Shear Lake deposit. The Cullaton operation produced approximately 200,000 ounces of gold during its years of activity in the early to mid-1980s (1981-1985), further underscoring the gold endowment of the Central Hearne domain.
Within this geological context, the Sundog Gold Project is underlain by Archean volcanic and sedimentary rocks of the Henik Group, which are unconformably overlain by Hurwitz Group sediments-an architecture typical of productive gold-bearing greenstone terranes across the Canadian Shield.
The 2025 Sundog field program was conducted from September 1 to October 7, 2025, comprising geological mapping, structural interpretation, trenching, prospecting, and grid establishment across the northern portion of the property. A total of 248 rock samples were collected within the Sundog project area for analysis, including 86 cut channel samples from historic trenches 8, 9B, 10, 17 and 29. The program successfully 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 following reports the results of the Sundog field program. Guardian did not undertake work to establish the existence of any mineral resources or mineral reserves as defined by National Instrument 43-101 and none are reported herein. It is uncertain if future exploration will result in definition of mineral resources or mineral reserves.
The Sundog gold occurrence was first discovered in 1962. Subsequent follow-up work by Abermin Corporation in the Fall of 1987 included a one-month field program of detailed geological mapping of a gridded area, Very Low-Frequency ('VLF') ground geophysics, a humus geochemical survey and a program of excavation and mapping of 38 hand trenches, 27 of which were sampled and assayed.
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.
Graydon Kowal, President and CEO, commented: 'Our 2025 field work at Sundog has delivered encouraging results in a highly fertile gold field. The results confirm the presence of high-grade gold, and visible coarse gold observed in the field supports our interpretation of a nuggety system. These positive results are providing the next level of confidence as we prepare to expand the exploration area and for drill targeting in 2026.'
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.
About Guardian Exploration Inc.
Guardian Exploration Inc. is a TSXV-listed company (TSXV: GX) (OTCQB: GXUSF) (Frankfurt: R6B) engaged in oil, gas, and mineral exploration and development. Guardian's assets include the Sundog and Esker gold projects in Nunavut's Kivalliq Region, the Mount Cameron Property in Yukon's Mayo Mining District, and the Kaigani claims in Southeast Alaska.
Contact:
Graydon Kowal
Tel: (403) 730-6333
Forward Looking Statements
This press release contains certain forward-looking statements, including, without limitation, statements containing the words 'may', 'plan', 'will', 'estimate', 'continue', 'anticipate', 'intend', 'expect', 'in the process' and other similar expressions which constitute 'forward looking information' within the meaning of applicable securities laws. Forward-looking statements reflect the Company's current expectation and assumptions, and are subject to a number of risks and uncertainties that could cause actual results to differ materially from those anticipated. These forward-looking statements involve risks and uncertainties including, but not limited to, our expectations regarding mineral exploration. Such statements reflect the current views of the Company with respect to future events and are subject to certain risks and uncertainties and other risks detailed from time-to-time in the Company's on-going filings with the securities regulatory authorities, which filings can be found at www.sedar.com. Actual results, events, and performance may differ materially. Readers are cautioned not to place undue reliance on these forward-looking statements. The Company undertakes no obligation to publicly update or revise any forward-looking statements either as a result of new information, future events or otherwise, except as required by applicable securities laws.
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