Onyx Gold Reports 2025 Results at King Tut Property, Yukon Field Program Confirms Wide-Spread Gold in Ra Vein Field over 850 m x 500 m Area
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January 28th, 2026 NR# 03-2026
NEWS RELEASE
Onyx Gold Reports 2025 Results at King Tut Property, Yukon
Field Program Confirms Wide-Spread Gold in Ra Vein Field over 850 m x 500 m Area
Vancouver, BC – January 28th, 2026 – Onyx Gold Corp. (“Onyx” or the "Company") (TSX-V:
ONYX, OTCQX: ONXGF) is pleased to announce complete results from the 2025 summer field
program (the “Program”) on the Company’s King Tut Property (“ King Tut” or the “Property”) in
Yukon’s eastern Tombstone Gold Belt.
King Tut is located 40 kilometers (“km”) north of the North Canol Road within one of the Yukon’s
most prospective and rapidly emerging metals districts, an area attracting increased attention
following several recent discoveries by Snowline Gold and Fireweed Metals (Figure 1).
The Program focused on the high-priority Ra target (“Ra”), advancing the systematic evaluation
of this gold- bearing intrusion through detailed geological mapping and extensive rock channel
and grab sampling, all aimed at identifying and prioritizing targets for future drilling.
Highlights of the Ra Intrusion and the 2025 Summer Field Program
• The Ra intrusion hosts widespread, multigenerational, gold-bearing sheeted quartz veins
within a 3 km x 2 km exposed granitic body. Historical drilling intersected 1.0 gram per
tonne gold (“ g/t Au) over 21 meters (“m”) (true width unknown) associated with the
sheeted quartz veins, along with surface grab samples of up to 20.1 g/t Au.
• In August 2025, the Company completed a 20-day field program on the Ra target to
systematically evaluate the sheeted vein field through detailed geological mapping, rock
and channel sampling, and drone imagery.
• The Company has defined a promising vein field approximately 1,700 m x 1,000 m in size
(Figure 3) at the Ra Target. Gold grades appear to be related to very high vein density
(15 to 35 veins per meter) that increases towards the western margin of the Ra intrusion
and with elevated bismuth content (typically 100-700 ppm in samples exceeding 1 g/t Au).
• Field work in 2025 has further defined a 850 m x 500 m ‘High Priority Target Area’ with
channel samples returning up to 5.0 m grading 0.7 g/t Au, including 1.0 m of 2.5 g/t Au,
5.0 m grading 0.5 g/t Au, including 1.0 m grading 1.8 g/t Au (including a 10 cm grab
sample grading 3.9 g/t Au), and 1.0 m grading 2.1 g/t Au.
• Grab samples from outcrop returned up to 4.2, 5.6, 9.3 and 14.7 g/t Au and grab samples
of veined and mineralized float returned highs of 2.0, 2.5, 4.9 and 7.0 g/t Au.
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• The Company is currently developing its 2026 program, including a potential drill program,
to follow up on these encouraging results.
“These results continue to build confidence that the Ra Intrusion represents a compelling
intrusion-related gold target with characteristics comparable to other intrusion-related gold
deposits emerging across the Tombstone Gold Belt,” said Brock Colterjohn, President & CEO of
Onyx Gold. “We’ve now outlined a large, high-priority vein field with encouraging surface grades,
strong structural controls, and clear vectors toward higher-grade mineralization near the intrusive
margins. With Snowline’s Valley deposit only 50 kilometers away, and strong investor appetite for
new Yukon gold discoveries , King Tut is exceptionally well -positioned. Rarely do investors get
exposure to a company with significant discovery potential in two of Canada’s premier gold
jurisdictions, combining an emerging, district-scale opportunity in Yukon with advanced discovery
momentum in Timmins, Ontario. Our focus now is to refine and prioritize drill targets as we
advance toward a potential first drill campaign at the Ra intrusion.”
Details of the Ra Target at King Tut and the 2025 Summer Field Program
The King Tut Property is in the heart of an emerging, reduced intrusive-related gold district in the
Selwyn Basin, Yukon. Previous fieldwork at King Tut identified two large-scale gold-in -soil
anomalies associated with the Golden Mask and Ra intrusions . These targets occur in a
comparable geological setting to Snowline Gold’s Valley deposit, one of the most significant recent
gold discoveries globally, located only 50 kilometers away.
Ra Target
The Ra target is located near the center of the Property, within the hornfelsed aureole on the
southwest margin of a large quartz monzonite/granite stock with multigenerational gold-bearing
sheeted quartz veins (Figure 2). Prior drilling intersected 1.0 g/t Au over 21 meters (true width
unknown) associated with the sheeted quartz veins, along with surface grab samples of up to
20.1 g/t Au.
During a limited 10-day field program in 2024, the Company focused on the Ra sheeted vein
fields, collecting rock channel s and grab samples, and conducting detailed mapping of vein
density and intrusive margins. The area features abundant north-south-oriented sheeted quartz
veins and locally sheeted quartz-arsenopyrite veins. Sampling returned values up to 25.1 g/t Au
from sub-cropping vein material, corroborating historical findings. Vein density mapping has
defined a promising vein field approximately 1,700 x 1,000 meters in size (Figure 3). Gold grades
appear to be related to vein density and increase towards the western margin of the intrusion.
From August 9th to August 28th, 2025, the Company completed a 20-day fly-camp-based 2025
field program on the Ra target to continue to evaluate the sheeted vein field through detailed
alteration and vein mapping, along with extensive rock and channel sampling. The Program was
carried out by field crews from Archer, Cathro & Associates (1981) Limited of Whitehorse, Yukon.
The work focused on the Ra sheeted vein fields (Figures 4 and 5) with field crews collecting 492
rock channel samples , 30 rock chip samples, and 40 rock grab samples (total 562 samples),
conducting detailed mapping of vein density and the Ra intrusive margins ( Figure 3) and
collecting aerial drone imagery.
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Observations and Results of the 2025 Summer Field Program
The mapped Ra Intrusion is an equigranular hornblende-biotite granodiorite that transitions to
biotite-rich granodiorite within 20- 50 m of its contact. At the southern and western edges of the
Ra intrusion, strongly hornfel s-altered sediments (dominantly shales and sandstones ) are
present.
Sheeted quartz veins are present throughout the Ra intrusion, typically occurring as 1 mm wide
(up to 10 cm, locally) veinlets of quartz cross-cutting unaltered granodiorite. Sheeted v eining in
the northern portion of the Ra vein field is generally found at a very high density (15 to 35 veins
per meter).
Veining and mineralization observed in the southern portion of the Ra Intrusion occur as two main
styles:
1) Within sheeted quartz veins, very fine-grained, euhedral, clear quartz crystals fill
vein fracture space or as massive milky quartz . Mineralization dominantly occurs as
arsenopyrite, which occurs as fine to coarse blebs that are intermittently distributed
throughout veins. Fine disseminated pyrite, bismuthinite, and local pyrrhotite,
tourmaline and molybdenite are also locally present in the same veins.
2) Near the intrusive contact along the western margin of the Ra intrusion, and the
surrounding hornfels aureole, widely spaced, narrow (3-10 cm wide), quartz-
arsenopyrite veins are present. These veins host abundant arsenopyrite (>20%) and
are the source of historical high-grade gold samples collected near the intrusive
contact (greater than 2 5 g/t gold). Quartz-arsenopyrite vein float is semi -regularly
found in talus and boulder fields near the western margin of the Ra intrusion, which
suggests that the veins formed near the intrusive contact.
New field work has further outlined an 850 m x 500 m ‘High Priority Target Area’ (Figure 3) with
surface sampling results returning channel samples of:
• 5.0 m grading 0.7 g/t Au, including 1.0 m of 2.5 g/t Au,
• 5.0 m grading 0.5 g/t Au, including 1.0 m grading 1.8 g/t Au (including a 10 cm grab
sample grading 3.9 g/t Au), and
• 1.0 m grading 2.1 g/t Au.
Grab samples from outcrop returned up to 4.2, 5.6, 9.3 and 14.7 g/t Au and grab samples of
veined and mineralized float returned 2.0, 2.5, 4.9 and 7.0 g/t Au.
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Figure 1 - Regional Property Map
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Figure 2 – Property Map – Golden Mask, Ra, and Main Tut Targets
Note - Highlighted historical samples noted herein have not been verified by the Company, but
they provide evidence for the general gold endowment of the claims. Grab samples are selective
in nature and don’t necessarily represent bulk tonnage grades
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Figure 3 – Property Map - Ra Target
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Figure 4 – View of Ra Intrusion within the WEAS Bowl - Looking Southeast
Figure 5 – High-density Sheeted Veins within the Ra Intrusion
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Next Steps
The Company is currently developing its 2026 exploration plans for King Tut which will include
follow-up surface sampling at the Ra Target to further refine and prioritize drill targets for potential
drilling later in the season.
The Company plans to develop additional drill targets at Golden Mask on the western portion of
King Tut, last drilled in 2024.
About Onyx Gold
Onyx Gold Corp. (TSXV: ONYX | OTCQB: ONXGF) is a Canadian exploration company focused
on unlocking district-scale gold opportunities in two of the country’s most prolific and proven
mining jurisdictions — Timmins, Ontario, and Yukon Territory.
In the Timmins Gold Camp, Onyx controls an extensive portfolio anchored by the Munro-Croesus
Property, host to the historic high-grade Croesus Mine and site of the Company’s recent Argus
North discovery — one of the most exciting new gold zones emerging in the camp.
Complementing Munro-Croesus are two large, early -stage projects — Golden Mile, a 140 km²
property situated just 9 km from Newmont’s multi -million-ounce Hoyle Pond Mine, and Timmins
South, a 187 km² land package strategically positioned around the Shaw Dome structure, offering
exceptional discovery potential.
Beyond Ontario, Onyx holds a commanding land position across four properties in Yukon’s
Selwyn Basin, an area rapidly gaining recognition for new gold discoveries and growing
exploration investment. The Company’s King Tut Property sits approximately 50km south of
Snowline Gold’s Valley discovery and adjacent to Fireweed Metals’ MacPass property.
Led by an experienced team with a strong track record of discovery, development, and value
creation, Onyx Gold is well funded and committed to delivering shareholder value through
disciplined exploration, strategic growth, and responsible resource development.
On Behalf of Onyx Gold Corp.
“Brock Colterjohn”
President & CEO
For further information, please visit the Onyx Gold Corp. website at www.onyxgold.com or contact:
Brock Colterjohn, President & CEO
or
Nicole Hoeller, NIKLI Communications – [email protected]
Phone: 1-604-283-3341
Email: [email protected]
Website: www.onyxgold.com
LinkedIn: https://www.linkedin.com/company/onyx-gold-corp
X: https://x.com/OnyxGoldCorp