Guardian ExploraƟon Concludes 2025 Field Work at Sundog Gold Project; Reports Preliminary High Grade Gold Results
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GUARDIAN EXPLORATION INC.
NEWS RELEASE
Guardian ExploraƟon Concludes 2025 Field Work at Sundog Gold Project; Reports Preliminary
High Grade Gold Results
For Immediate Release
Calgary, Alberta – November 12, 2025 — Guardian ExploraƟon Inc. (TSXV: GX) (OTCQB: GXUSF)
(Frankfurt: R6B) (“Guardian” or the “Company”) is pleased to announce the successful
compleƟon 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 km² (23,265 acres) within the central Ennadai–Rankin
Archean greenstone belt, a major Neoarchean supracrustal complex comprising volcaniclasƟcs,
mafic volcanic flows, and clasƟc 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 prospecƟve Archean
greenstone terranes.
The Ennadai–Rankin greenstone belt covers more than 100,000 km² (38,610 sq. miles) and
represents both a regionally extensive straƟgraphic 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
addiƟonal 7+ million ounces in reserves and resources (Agnico Eagle, 2024).
AddiƟonally, the region includes the historic Cullaton Lake mine, located near the Shear Lake
deposit. The Cullaton operaƟon produced approximately 200,000 ounces of gold during its years
of acƟvity 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 producƟve 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 interpretaƟon, trenching, prospecƟng, and grid
establishment across the northern porƟon of the property. A total of 248 rock samples were
collected within the Sundog project area for analysis, including 86 cut channel samples from
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historic trenches 8, 9B, 10, 17 and 29. The program successfully confirmed mulƟple gold-bearing
structures and expanded the known footprint of mineralizaƟon.
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 exploraƟon area, which will be
used for planned 2026 field work. The airstrip was used in 2025 for landing DC-3 fixed wing
aircraŌ, and historically has served larger cargo planes.
(a) Guardian’s Cullaton Lake exploraƟon
camp.
(b) Cullaton airstrip, capable of receiving
DC-3 aircraŌ.
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 NaƟonal
Instrument 43-101 and none are reported herein. It is uncertain if future exploraƟon will result
in definiƟon of mineral resources or mineral reserves.
The Sundog gold occurrence was first discovered in 1962. Subsequent follow-up work by
Abermin CorporaƟon 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 excavaƟon 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 objecƟve of confirming historical work and observaƟons, 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.
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(c) Sundog traverse, baseline, and sample sites. (d) Samples prepped for transport.
Two significant conclusions from a brief report produced by ScoƩ Anderson, Ph.D., P .Geo.,
following a site visit from Sept 18 – 22, include:
Gold-bearing veins at Sundog are mainly hosted in competent mafic–intermediate
intrusive sills with weak to negligible ducƟle fabrics, indicaƟng that competency contrast
likely focused quartz veining and mineralizaƟon. These sills form shallowly east- and
northeast-dipping structural panels, suggesƟng exploraƟon potenƟal at depth to the east
or along strike to the north and south.
Veins are primarily associated with steep NNE–SSW briƩle-dominant structures, but the
presence of shallow, low-angle ducƟle fabrics and high-strain zones indicates addiƟonal
potenƟal for flat-lying mineralized zones, either within fractured favourable rock sheets
or along flat-lying high-strain zones.
Broad zones of anomalous mineralizaƟon (>0.5 g/t Au) have been idenƟfied in quartz–
carbonate–sulphide veining hosted within dominantly metavolcanic rocks and possible fine-
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grained gabbro sills, as reinterpreted from earlier mapping. Further work in 2026 will be
required to confirm these lithological relaƟonships.
Panning of soils and weathered bedrock from trench and historical sample sites confirmed the
presence of coarse, recoverable gold, consistent with gold reported in prior exploraƟon by
Abermin CorporaƟon (1987) and subsequent programs by other operators.
(e) Gold grains recovered from Sundog Trenches
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(f) Visible gold in cut channel sample 291634. Pencil
indicated locaƟon of gold grain.
IniƟal grab sampling included 162 samples of quartz vein and mafic volcanic wall rock from
float, outcrop and trenches. Significant grab/chip sample results are presented in Table 1 below.
Note that grab/chip samples are selecƟve in nature and may not represent the overall grade or
width of mineralizaƟon.
Table 1: Significant Grab / Chip Sample Results
Sample
Number LocaƟon
2025 Result
by
Photonassay
(g/t Au)
Overlapping/Adjacent 1987
Chip/Grab Sampling
Results
29501 South of Trench 29; Grab/
Float (source unknown) 6.041
291579 Trench 8; Discont. chip from
12cm vein 2.339 KR-SD-87207; 2.958 g/t Au
from metallic screen assay.
291587 Trench 9; Discont. chip from
10cm vein 5.726
291590
Trench 9: 20-25cm discont.
chip of altered mafic
volcanic
1.242 KR-SD-87293; 16.787 g/t Au
from metallic screen assay.
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291591
Trench 10; Discont. chip
from 35cm QV and altered
mafic volcanic
3.994 KR-SD-87271; 7.996 g/t Au
from metallic screen assay.
291592 Trench 10; Discont. chip
from 15cm quartz vein 20.177
291593 Trench 10; Discont. chip
from 10-12cm quartz vein 34.45 KR-SD-87275; 4.12 g/t Au
from metallic screen assay.
291594 Trench 10; Discont. chip;
from 15cm quartz vein 0.722
291596 Trench 10; Discont. chip;
from 10cm quartz vein 0.112 KR-SD-87273; 38.54 g/t Au
from metallic screen assay.
291597
Trench 10; Discont chip over
30cm x 30cm area of QV
stockwork and mafic
volcanic
22.231
291600 Trench 10; Discont. chip;
from 15cm quartz vein 21.536 KR-SD-87313; 4.37 g/t Au
from metallic screen assay.
291706
Trench 17; Discont chip over
25cm x 25cm area; quartz
vein and altered
mafic volcanic
1.767
291708
Trench 17; Discont chip over
35cm x 20cm area; quartz
vein and altered
mafic volcanic
1.079
291701
Trench 31; Discont. chip
from weathered outcrop;
20cm x 30cm area.
6.687 KR-SD-87248; 2.158 g/t Au
from metallic screen assay.
Subsequently, a program of saw-cut conƟnuous channel sampling was undertaken in Trench 8,
9B, 10, 17 and 29 areas.
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Table 2: Trenches with Cut Channels
Trench No. Channel No. Cut Length (m) Trench No. Channel No. Cut Length (m)
8 1 1.54 17 1 3.00
9B 1 2.03 2 3.58
2 2.91 3 1.80
10 1 2.43 4 1.60
2 1.35 5 2.50
3 2.18 29 1 1.60
4 1.75 2 1.16
5 4.97 3 1.30
6 1.06 4 1.02
7 2.59 5 2.98
8 2.08 6 1.35
9 1.11
10 1.21
11 2.44
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 mineralizaƟon to
the south of excavaƟons by previous workers, almost doubling the strike length from
8.8m to 15.4m.
Trench 10, which is centered on the historic 1962 Selco discovery outcrop, was re-
excavated and enlarged, and has been extended to the NE and North, compared with
previous work. The strike length of vein-hosted gold mineralizaƟon has been extended
from 15.5m in 1987 to at least 40m following Guardian’s channel sampling program.
Trench 17, located 240m southwest of Trench 10, has returned anomalous to low-grade
gold in almost every sample collected. Fine gold has been panned by Guardian from
weathered bedrock and soil from several locaƟons within Trench 17. The area is showing
potenƟal as a lower-grade larger target, supported by possible extensions of
mineralizaƟon eastward towards trench 30 and trench 31. This area will receive
extensive follow-up invesƟgaƟon in the 2026 field season.
ObservaƟons and sampling from Trench 30 and 31 confirm that gold is present in narrow
quartz veins crosscuƫng or parallel to shallow dipping foliaƟon in foliated fine grained
mafic volcanic rocks, which has not previously been a focus of exploraƟon.
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(g) Exposure of Hurwitz Group
quartzite, iron formaƟon and
quartz veining.
(h) Guardian’s management and field crew.
Table 3: Significant Channel Sampling results
Sample
Number Location Interval
(cm)
2025 Result by
Photonassay
(g/t Au)
Overlapping/Adjacent 1987
Sampling Results
291731 Trench 8 96 4.695
KR-SD-87208 (grab sample);
9.566 g/t Au from metallic screen
assay.
291733 Trench 9b 60 1.068
291738 Trench 9b 72 8.851
291676 Trench 10; Channel 1 30 10.914
291677 Trench 10; Channel 1 72 0.88
291678 Trench 10; Channel 1 46 8.23
291682 Trench 10; Channel 2 32 1.474 KR-SD-87275 (grab sample); 4.12
g/t Au from metallic screen assay.
291687 Trench 10; Channel 3 45 1.273
291696 Trench 10; Channel 5 10 1.038
291622 Trench 10; Channel 8 51 7.411
291624 Trench 10; Channel 8 94 7.429
291627 Trench 10; Channel 9 20 20.072