Onyx Gold Discovers New Gold Zone 250 meters from Argus North

Rhea-AI Summary

Onyx Gold (OTCQX: ONXGF, TSXV: ONYX) announced a new near-surface gold discovery, Argus West, 250 m southwest of Argus North at the 100% owned Munro-Croesus Project (December 3, 2025). Step-out drilling returned 21.2 m @ 2.1 g/t Au (including 14.0 m @ 3.0 g/t and 1.0 m @ 19.7 g/t with visible gold) in MC25-213, and 38.0 m @ 0.5 g/t Au (including 14.0 m @ 1.0 g/t) in MC25-199. The company has defined mineralization over a 900 m strike and traced continuity from surface to ~400 m depth. To date Onyx completed >29,000 m in 85 holes of a 75,000 m program; assays announced for 41 holes. The company also purchased a 1.5% NSR for 50,000 common shares (TSXV approval pending).

Positive

• MC25-213: 21.2 m @ 2.1 g/t Au (includes 14.0 m @ 3.0 g/t and 1.0 m @ 19.7 g/t)
• MC25-199: 38.0 m @ 0.5 g/t Au (includes 14.0 m @ 1.0 g/t)
• Defined mineralization over a 900 m strike and to ~400 m depth
• Visible gold reported in drill hole MC25-213
• Completed >29,000 m in 85 holes of a planned 75,000 m drill program
• Acquired a 1.5% NSR on project claims for 50,000 shares

Negative

• Assays pending for 44 drill holes (85 holes completed; assays announced for 41 holes)
• NSR purchase is subject to TSXV approval, not finalized

News Market Reaction

+10.76%

1 alert

+10.76% News Effect

On the day this news was published, ONXGF gained 10.76%, reflecting a significant positive market reaction.

Data tracked by StockTitan Argus on the day of publication.

Key Figures

MC25-213 intercept: 21.2 m @ 2.1 g/t Au High-grade subinterval: 5.0 m @ 5.1 g/t Au Visible gold interval: 1.0 m @ 19.7 g/t Au +5 more

8 metrics

MC25-213 intercept 21.2 m @ 2.1 g/t Au Argus West step-out hole 250 m from Argus North

High-grade subinterval 5.0 m @ 5.1 g/t Au Within 26.2 m @ 1.2 g/t Au in MC25-213

Visible gold interval 1.0 m @ 19.7 g/t Au High-grade subinterval in MC25-213 with visible gold

MC25-199 intercept 38.0 m @ 0.5 g/t Au Argus West step-out 430 m from Argus North

Mineralized strike length 900 m Combined Argus North, Main and West gold mineralization

Drilling completed >29,000 m 85 holes completed in Phase I/II/III of 75,000 m program

Planned drill program 75,000 m Phase I/II/III diamond drill program at Munro-Croesus

NSR shares issued 50,000 common shares Consideration for 1.5% net smelter returns royalty purchase

Market Reality Check

Price: $1.32 Vol: Volume 25,450 is roughly ...

normal vol

$1.32 Last Close

Volume Volume 25,450 is roughly in line with the 20-day average of 25,322. normal

Technical Price 1.155 is trading above the 200-day MA at 0.91 despite sitting at the 52-week low.

Peers on Argus

Gold peers showed mixed moves, from -14.09% (SNGCF) to +12.18% (WVMDF), indicati...

Gold peers showed mixed moves, from -14.09% (SNGCF) to +12.18% (WVMDF), indicating stock-specific rather than uniform sector momentum.

Historical Context

5 past events · Latest: Dec 03 (Positive)

Pattern 5 events

Date	Event	Sentiment	Move	Catalyst
Dec 03	New zone discovery	Positive	+10.8%	Argus West near-surface gold discovery with strong MC25-213, MC25-199 intercepts.
Nov 17	Drill results upgrade	Positive	+13.2%	Best Argus North hole to date, 208 m @ 2.3 g/t Au with high-grade zones.
Nov 13	Phase III drilling	Positive	+3.0%	Launch of fully funded 50,000 m Phase Three drill program using three rigs.
Oct 22	Argus North drilling	Positive	-4.9%	New Argus North intercepts up to 99.5 m @ 1.5 g/t Au expanding zone.
Oct 07	Surface mineralization	Positive	+0.1%	Surface channels and shallow drilling define gold right at surface at Argus North.

Pattern Detected

Recent drilling and funding news has generally been followed by positive price reactions, with one notable negative divergence.

Recent Company History

This announcement continues a sequence of Munro‑Croesus updates in 2025. Prior releases on Oct 7, Oct 22, and Nov 17 detailed progressively stronger Argus North intercepts and an expanding mineralized footprint, while the Nov 13 update launched a fully funded Phase Three drill program with substantial cash on hand. Today’s Argus West discovery and 1.5% NSR acquisition extend that narrative by adding a new near‑surface zone and consolidating project economics within the same 100%-owned land package.

Market Pulse Summary

The stock surged +10.8% in the session following this news. A strong positive reaction aligns with p...

Analysis

The stock surged +10.8% in the session following this news. A strong positive reaction aligns with prior patterns where drilling news saw moves of 10.76% and 13.16%. The Argus West discovery adds near-surface mineralization and extends the mineralized strike to 900 m, building on >29,000 m of completed drilling. Investors would still need to weigh how ongoing share-funded transactions, such as the 50,000-share NSR purchase, might affect future upside.

Key Terms

net smelter returns royalty, diamond drill program, variolitic volcanic rocks, hanging wall, +4 more

8 terms

net smelter returns royalty financial

"signed a net smelter returns royalty purchase agreement (the "Agreement")"

A net smelter returns (NSR) royalty is a contractual right to receive a percentage of the revenue generated from mined minerals after the ore has been processed and sold, with common deductions for refining, smelting and transport costs. Think of it like a landlord taking a slice of a tenant’s monthly sales after the tenant pays basic operating bills. Investors care because an NSR affects the future cash flow and valuation of a mining project and shifts some upside and downside risk away from the operator to the royalty holder.

diamond drill program technical

"ongoing 75,000 m phase I/II/III diamond drill program (the "Program")"

A diamond drill program is a mining exploration campaign that uses a rotating drill fitted with a diamond-studded bit to cut and retrieve solid rock cores from underground. Think of it like taking a reliable subsurface “biopsy” that lets geologists see the actual rock and mineral content directly; for investors, the cores provide the most trustworthy evidence of whether valuable minerals exist, in what quantity and quality, and therefore shape project value and financing decisions.

variolitic volcanic rocks technical

"within mafic variolitic volcanic rocks in the structural hanging wall"

Variolitic volcanic rocks are lava-derived rocks that contain small, rounded blobs or spherules (varioles) formed as the lava cooled and crystallized, giving the rock a spotted, mixed texture similar to a fruitcake studded with different bits. For investors, they matter because this texture and the rock’s chemistry can indicate past volcanic processes that concentrate valuable metals or create fractures where minerals collect, making such rocks important targets in mineral exploration.

hanging wall technical

"within mafic variolitic volcanic rocks in the structural hanging wall to the Argus Fault"

The hanging wall is the block of rock that lies above a sloping fault or mineral vein; imagine a tilted seam and the rock on the upper side of that seam. For investors, it matters because minerals and ore often concentrate differently in the hanging wall than the lower block, influencing where companies drill, how they mine, and the cost, safety and expected value of a deposit—key factors for project economics and risk.

foot wall technical

"within fine-grained metasedimentary rocks, in the structural footwall to the Argus Fault"

The foot wall is the block of rock that lies below an inclined fault or mineral vein; imagine a slanted shelf where the lower side is the foot wall and the upper side is the hanging wall. For investors, knowing which side hosts ore and how the foot wall behaves matters because it affects how easily minerals can be mined, how stable underground workings will be, and how accurately a deposit’s size and value can be estimated.

quartz-carbonate veining technical

"strongly sericite-altered with quartz-carbonate veining"

Veins of quartz and carbonate minerals formed when hot, mineral-rich fluids moved through cracks in rock and then cooled and hardened. For investors in mining projects, these veins matter because they often act like plumbing that concentrates valuable metals (gold, silver, copper) into mineable pockets; finding widespread or well-developed quartz-carbonate veining can point to higher potential grades and guide where companies drill or develop a mine.

visible gold technical

"intersected multiple occurrences of visible gold (Plate 1) returning 21.2 m"

Visible gold means actual gold particles can be seen with the naked eye in rock, soil or drill core samples rather than only detected by lab instruments. For investors, it is a strong visual clue that a mineralized zone may be high-grade, much like seeing ripe fruit on a tree suggests good harvest potential, but it is not a substitute for measured assays and engineering studies that determine how much gold can be profitably recovered.

net smelter royalty financial

"purchased and assumed from the Vendors a one and one-half percent (1.5%) net smelter returns royalty"

A net smelter royalty (NSR) is a contractual payment to the holder of mineral rights equal to a fixed percentage of the revenue from the sale of mined metals after they have been processed and basic costs like smelting and transport are deducted. Think of it as a toll on each shipment of metal: it reduces the operator’s take from production but provides the royalty holder with a steady, production-linked income stream that investors use to value both mines and royalty assets.

AI-generated analysis. Not financial advice.

Argus West Drilling Intersects Multiple Gold Occurrences Returning 21.2 m of 2.1 g/t Au, Including 14.0 m of 3.0 g/t Au and a Second Interval of 5.0 m of 5.1 g/t Au Starting 9.8 m From Surface -- Demonstrates Potential for Repeated Argus North-Style Mineralized Zones

Vancouver, British Columbia--(Newsfile Corp. - December 3, 2025) - Onyx Gold Corp. (TSXV: ONYX) (OTCQX: ONXGF) ("Onyx" or the "Company") is pleased to the announce the discovery of a new zone of near-surface gold mineralization, 250 meters ("m") southwest of the Argus North Zone ("Argus North"). This new discovery the latest advancement of the Company's ongoing 75,000 m phase I/II/III diamond drill program (the "Program") at its 100%-owned Munro-Croesus Project ("Munro-Croesus" or the "Project"), located 75 km east of Timmins, Ontario.

Results reported today from Argus West include two step-out drill holes, MC25-213 and MC25-199, completed 250 m and 430 m respectively from Argus North along the newly prioritized Argus Fault. This northeast-southwest-trending, moderately to steeply northwest-dipping structure is emerging as an important control on gold mineralization. Two additional drill holes are also reported today, which tested targets up to 925 m southwest of Argus North.

At Argus West, drill hole MC25-213 intersected multiple occurrences of visible gold (Plate 1) returning 21.2 m grading 2.1 grams per tonne gold ("g/t Au") starting at 9.8 m from surface within mafic variolitic volcanic rocks in the structural hanging wall to the Argus Fault. Drill hole MC25-199, a further 180 m to the southwest, intersected 14.0 m grading 1.0 g/t Au hosted by fine-grained metasedimentary rocks, in the structural footwall to the Argus Fault.

New Highlights from Argus West

• 21.2 m grading 2.1 g/t Au, in drill hole MC25-213 (250m from Argus North), including
  • 14.0 m grading 3.0 g/t Au, including
    • 1.0 m grading 19.7 g/t Au (with visible gold), AND

• 26.2 m grading 1.2 g/t Au, also in drill hole MC25-213, including
  
  • 5.0 m grading 5.1 g/t Au, including
    
    • 1.5 m grading 13.7 g/t Au (with visible gold)

• 38.0 m grading 0.5 g/t Au, in drill hole MC25-199 (430m from Argus North), including
  • 14.0 m grading 1.0 g/t Au, including
    • 3.0 m grading 2.4 g/t Au
      
      
• Ongoing step-out drilling at the Argus North, Main and West discoveries has now defined broad zones of gold mineralization over a total strike length of 900 m and from surface to ~400 m vertically.

• All of the Argus Zones remain open along strike, down-dip, and down-plunge.

• The Company has completed 85 drill holes to date, totalling >29,000 m as part of its 75,000 m Phase I/II/III drill program. Assays have been announced for 41 holes.

"Argus West is a significant new discovery that continues to demonstrate the scale potential of the Argus gold system," said Brock Colterjohn, President & CEO. "Intersecting near-surface gold mineralization 250 meters southwest of Argus North in both volcanic and sedimentary host rocks is a new and encouraging development for us, and highlights the fertility of the newly prioritized Argus Fault. Seeing the system develop across multiple lithologies supports our view that Argus is part of a larger, structurally controlled corridor with meaningful expansion potential. With three rigs active, we are continuing systematic step-outs along strike and down-dip to continue to evaluate the size of this new zone and the broader Argus trend."

Discussion of 2025 Drill Results

The Argus North Zone is located on the western half of the Munro-Croesus Project, approximately 150 meters north of the regional Pipestone Fault, a major structural corridor that hosts several significant gold deposits in the Timmins camp. The discovery hole at Argus North, MC24-163, was reported earlier this year, and returned 69.6 m grading 3.4 g/t Au, including 34.5 m grading 5.4 g/t Au and 9.5 m grading 13.9 g/t Au (see Company news release dated April 10, 2025).

Argus North lies roughly 100 meters north of the east-west trending Argus Main Zone ("Argus Main"), which represents a separate 750 m x 200 m near-surface bulk-tonnage gold target (e.g., 1.0 g/t Au over 63.3 m and 0.5 g/t Au over 136 m).

Gold mineralization at Argus North is distinguished by both broad zones (50 m to over 100 m) of +1 g/t Au mineralization containing multiple continuous higher-grade sub-intervals (e.g. 34.5 m grading 5.4 g/t in hole MC25-163, 24.9 m grading 5.2 g/t in MC25-232, and 5.2 m grading 5.1 g/t in hole MC25-180) (Figure 1). Geologically, the high-grade sub-intervals at Argus North are closely associated with zones of strong albitization and silicification, pyritic stringers, and localized porphyritic intrusions within variolitic basalt and volcanic breccias cut by dominant northeast-trending faults and associated fractures. This combination of alteration and structural preparation is interpreted to be a key control on gold deposition. Drilling to date has demonstrated excellent vertical continuity of mineralization, now traced from surface to approximately 400 meters depth, with the system remaining open along strike, down-dip and down-plunge.

Results reported today from the new Argus West Zone include two (2) step-out diamond drill holes, MC25-213 and MC25-199, which were completed 250 m and 430 m, respectively, from Argus North Zone along the Argus Fault, a key northeast-southwest-trending, moderately to steeply dipping structure that appears to play an important role in the locus of gold mineralization.

Drill hole MC25-213 returned 21.2 m grading 2.1 g/t Au starting at 9.8 m from surface within mafic variolitic volcanic rocks in the hanging wall to the Argus Fault. The variolitics are strongly albite-altered with a moderate crackle brecciation, and fine-grained disseminated to fracture-controlled pyrite, similar to Argus North. Multiple visible gold occurrences at approximately 27.0 m and 65.5 m depth downhole are associated with quartz ± carbonate veins that define the crackle breccia (Plate 1). Although interpreted to be broadly equivalent mineralizing systems, the limited observation of visible gold at Argus North indicates that Argus West may represent a distinct mineralization style with more efficient gold deposition focused in breccia units near the Argus Fault.

Drill hole MC25-199, a further 180 m to the southwest, intersected 14.0 m grading 1.0 g/t Au within fine-grained metasedimentary rocks, in the foot wall to the Argus Fault. Strong sericite alteration with an increase in quartz-carbonate veining characterizes the mineralized interval.

Drill hole MC25-215 was designed to test for gold mineralization associated with felsic intrusions adjacent to the Pipestone Fault, located 925 m southwest of Argus North. The hole returned 1.5 m grading 4.8 g/t Au in fine-grained metasedimentary rocks, confirming a new, fertile gold mineralizing environment. The metasedimentary rocks are intruded by multiple quartz-feldspar porphyritic intrusions, up to 50 m thick and are strongly sericite-altered with quartz-carbonate veining.

Drill hole MC25-217 was collared 100 m west of drill hole MC25-199, but north of the Argus Fault and returned no significant values.

The Company is aggressively following up on this discovery at Argus West with 50 m spaced step-out drill holes, immediately east, west and down-dip of drill hole MC25-213, with other holes planned to systematically test the Argus Fault along strike.

Details for drill hole assays reported in this news release are shown in Figures 1, 2, 3, 4 and Table 1.

Table 1 - Significant Assay Results from Recent Drilling Completed at the Argus North Zone

Target	From	To	Length	Au
Drill Hole	(m)	(m)	(m)	(g/t)
Argus West
MC25-199	21.5	28.5	7.0	0.2
And	55.5	93.5	38.0	0.5
Including	67.5	81.5	14.0	1.0
Including	78.5	81.5	3.0	2.4
And	195.9	197.4	1.5	3.0
And	302.5	308.0	5.5	0.2
MC25-213	13.8	35.0	21.2	2.1
Including	21.0	35.0	14.0	3.0
Including	27.0	28.0	1.0	19.7
And	55.8	82.0	26.2	1.2
Including	64.8	69.8	5.0	5.1
Including	64.8	67.4	2.6	9.1
Including	64.8	66.3	1.5	13.7
MC25-215	303.5	305.0	1.5	4.8
MC25-217	No Significant Assays

 

*Intersections are reported as drilled width; true width is estimated to be 70-90% of drilled width.

Figure 1 - Plan Map Highlighting Argus North/Argus West Zone Drill Holes Reported in this Release

To view an enhanced version of this graphic, please visit:
https://images.newsfilecorp.com/files/9800/276730_cb5c3229d420db7b_001full.jpg

Figure 2 - Longitudinal Section Highlighting Argus North/Argus West Zone Drill Holes Reported in this Release

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Figure 3 - Cross Section Highlighting Argus West Zone Drill Hole MC25-213 Reported in this Release

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Figure 4 - Location of the Munro-Croesus Gold Project, Ontario

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Plate 1 - Visible Gold from Drill Hole MC25-213 at 27 m Downhole Depth

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https://images.newsfilecorp.com/files/9800/276730_cb5c3229d420db7b_005full.jpg

The Munro-Croesus Project

The Munro-Croesus Project is located along Highway 101 in the heart of the Abitibi greenstone belt, Canada's premier gold mining jurisdiction (Figure 2). This large, 100% owned land package includes the past-producing Croesus Gold Mine, which yielded some of the highest-grade gold ever mined in Ontario. Extensive land consolidation from 2020-2025 has unified the patchwork of patented and unpatented mining claims surrounding the Croesus Gold Mine into one coherent package and enhanced the project's exploration potential.

The Project covers 109 km² of highly prospective geology within the influence of major gold-bearing structural breaks. Bulk-tonnage gold deposits located in the immediate region include the Fenn-Gib gold project being developed by Mayfair Gold Corp., and the Tower Gold Project being developed by STLLR Gold Inc.

Net Smelter Royalty Purchase Agreement

The Company also wishes to announce that it has signed a net smelter returns royalty purchase agreement (the "Agreement") with two arm's length vendors (the "Vendors") through its wholly-owned subsidiary under which the Company purchased and assumed from the Vendors a one and one-half percent (1.5%) net smelter returns royalty (the "Purchased Royalties") on certain staked mining claims in the Company's 100% owned Munro-Croesus Project and the Timmins South property, both located in the Province of Ontario. The consideration to be paid by the Company to the Vendors for the Purchased Royalties is 50,000 common shares in the capital of the Company. The Agreement is subject to the approval of the TSX Venture Exchange.

About Onyx Gold

Onyx Gold Corp. 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 (TSXV: ONYX) (OTCQB: ONXGF) 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 - nicole@onyxgold.com

Phone: 1-604-283-3341
Email: information@onyxgold.com
Website: www.onyxgold.com
LinkedIn: https://www.linkedin.com/company/onyx-gold-corp
Twitter: https://twitter.com/OnyxGoldCorp

Additional Notes:

Starting azimuth, dip and final length (Azimuth/-Dip/Length) for the four (4) drill holes reported today are noted as follows: MC25-199 (000/45/345), MC25-213 (000/45/249), MC25-215 (000/45/414), and MC25-217 (000/45/285).

Samples of drill core were cut by a diamond blade rock saw, with half of the cut core placed in individual sealed polyurethane bags and half placed back in the original core box for permanent storage. Sample lengths typically vary from a minimum 0.2-meter interval to a maximum 1.5-meter interval, with an average 0.5 to 1.0-meter sample length.

Drill core samples were delivered by truck in sealed woven plastic bags were delivered by truck in sealed woven plastic bags to MSA Labs laboratory facility in Timmins, Ontario for sample preparation followed by the photon assay method. MSA Labs operates meeting all requirements of International Standards ISO/IEC 17025:2017 and ISO 9001:2015. Drill core samples are crushed to 70% passing 2mm, then a representative split is taken and pulverized to 85% passing 75μm. Gold is determined by photon assay of a 500-gram sample providing a true bulk reading. The Chrysos PhotonAssay method utilizes high energy x- rays causing excitation of atomic nuclei allowing enhanced analysis for gold.

Coarse rejects returned from MSA Labs and remaining uncut drill core samples were then delivered by truck in sealed woven plastic bags to ALS Geochemistry laboratory facility in Timmins, Ontario for sample preparation with final analysis at ALS Geochemistry Analytical Lab facility in North Vancouver, BC. ALS Geochemistry operate meeting all requirements of International Standards ISO/IEC 17025:2017 and ISO 9001:2015. Drill core samples are crushed to 70% passing 2mm, then a representative 250 g riffle split is taken and pulverized to 85% passing 75μm. Gold is determined by the fire-assay fusion method of a 50-gram sub-sample with atomic absorption spectroscopy (AAS). Samples that return values >10 ppm gold from fire assay and AAS are determined by using fire assay and a gravimetric finish. Various metals including silver, gold, copper, lead and zinc are analyzed by inductively coupled plasma (ICP) atomic emission spectroscopy, following multi-acid digestion. The elements copper, lead and zinc are determined by ore grade assay for samples that return values >10,000 ppm by ICP analysis. Silver is determined by ore-grade assay for samples that return >100 ppm. All ALS Geochemistry sites operate under a single Global Geochemistry Quality Manual that complies with ISO/IEC 17025:2017. ALS Geochemistry follows the quality management and operational guidelines set out in the international standards ISO/IEC 17025 - "General Requirement for the Competence of Testing and Calibration Laboratories" and ISO 9001 - "Quality Management Systems".

The Company maintains a robust QA/QC program that includes the collection and analysis of duplicate samples and the insertion of blanks and standards (certified reference material).

Ian Cunningham-Dunlop, P.Eng., Executive Vice President for Onyx Gold Corp. and a qualified person ("QP") as defined by Canadian National Instrument 43-101, has reviewed and approved the technical information contained in this release.

Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.

Cautionary and Forward-Looking Statements

Forward-looking statements include predictions, projections, and forecasts and are often, but not always, identified by the use of words such as "seek", "anticipate", "believe", "plan", "estimate", "forecast", "expect", "potential", "project", "target", "schedule", "budget" and "intend" and statements that an event or result "may", "will", "should", "could" or "might" occur or be achieved and other similar expressions and includes the negatives thereof. All statements other than statements of historical fact included in this release, including, without limitation, statements regarding the potential significance of results from the new Argus North discovery are forward-looking statements that involve various risks and uncertainties. There can be no assurance that such statements will prove to be accurate and actual results and future events could differ materially from those anticipated in such statements. Forward-looking statements are based on a number of material factors and assumptions. Important factors that could cause actual results to differ materially from Company's expectations include actual exploration results, changes in project parameters as plans continue to be refined, results of future resource estimates, future metal prices, availability of capital, and financing on acceptable terms, general economic, market or business conditions, uninsured risks, regulatory changes, defects in title, availability of personnel, materials, and equipment on a timely basis, accidents or equipment breakdowns, delays in receiving government approvals, unanticipated environmental impacts on operations and costs to remedy same, and other exploration or other risks detailed herein and from time to time in the filings made by the Company with securities regulators. Although management of the Company has attempted to identify important factors that could cause actual results to differ materially from those contained in forward-looking statements or forward-looking information, there may be other factors that cause results not to be as anticipated, estimated, or intended. There can be no assurance that such statements will prove to be accurate, as actual results and future events could differ materially from those anticipated in such statements. Accordingly, readers should not place undue reliance on forward-looking statements and forward-looking information. Readers are cautioned that reliance on such information may not be appropriate for other purposes. The Company does not undertake to update any forward-looking statement, forward-looking information or financial outlook that are incorporated by reference herein, except in accordance with applicable securities laws. We seek safe harbor.

To view the source version of this press release, please visit https://www.newsfilecorp.com/release/276730

FAQ

What did Onyx Gold (ONXGF) report on December 3, 2025 at Munro-Croesus?

Onyx reported a new near-surface discovery, Argus West, with holes including 21.2 m @ 2.1 g/t Au in MC25-213 and ongoing step-out drilling.

How far is the Argus West discovery from Argus North for ONXGF?

Argus West was discovered approximately 250 m southwest of Argus North along the Argus Fault.

What are the key assay highlights for ONXGF from Argus West drill hole MC25-213?

MC25-213 returned 21.2 m @ 2.1 g/t Au, including 14.0 m @ 3.0 g/t and 1.0 m @ 19.7 g/t with visible gold.

How much drilling has Onyx completed in the 2025 program (ONXGF)?

Onyx completed >29,000 m in 85 drill holes to date as part of a planned 75,000 m Phase I/II/III program.

What is the strike length and depth continuity reported for the Argus zones (ONXGF)?

The Argus zones are reported over a combined 900 m strike and traced from surface to approximately 400 m down-dip.

What royalty change did Onyx announce for Munro-Croesus (ONXGF)?

The company purchased a 1.5% net smelter returns royalty on certain claims for 50,000 common shares, subject to TSXV approval.