Vancouver, British Columbia — February 24, 2026 — Leads & Copy — Onyx Gold Corp. (TSXV: ONYX) (OTCQX: ONXGF) has announced additional drill results from its ongoing 75,000-meter drill program at its 100%-owned Munro-Croesus Project, located 75 km east of Timmins, Ontario.
The company reported that drill hole MC25-242EXT, an extension of previously reported hole MC25-242, intersected the Western Extension of the Argus North Zone, returning 70.3 m grading 2.3 g/t Au, including 28.6 m grading 4.7 g/t Au, 9.8 m grading 5.9 g/t Au, 1.0 m grading 28.3 g/t Au, and 2.1 m grading 22.4 g/t Au.
These results replicate those previously reported from drill hole MC25-243, which returned 73.2 m grading 2.4 g/t Au approximately 100 m up-dip from MC25-242EXT within the Western Extension. The comparable thickness and grade between the two holes, drilled on the same section, provide confirmation of continuity within this newly recognized structural offset of Argus North.
Drilling at Argus North continues to demonstrate vertical continuity of gold mineralization over a total strike length of 225 m and to over 400 m vertical depth. The higher-grade gold mineralization appears to plunge west-northwest based on drill hole assays and structural modelling. The Argus North Zone remains open along strike, down-dip, and down-plunge.
The Argus North Zone is located on the western half of the Munro-Croesus Project, approximately 150 m north of the regional Pipestone Fault. The discovery hole at Argus North, MC24-163, 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.
Gold mineralization at Argus North is characterized by broad zones of +1 g/t Au mineralization containing wide zones of higher-grade mineralization (+5 g/t Au). The higher-grade sub-intervals are associated with zones of strong albitization and silicification, pyritic stringers, and localized porphyritic intrusions within variolitic basalt and volcanic breccias cut by dominant moderate to steeply dipping, northeast-trending faults and associated fractures.
Two drill holes, MC25-242 and MC25-243, were completed on the same cross-section. Drill hole MC25-243 returned 37.6 m grading 1.1 g/t Au within Argus North and a second deeper intersection of 73.2 m grading 2.4 g/t Au within the Western Extension.
Drill hole MC25-242 intersected 25.7 m grading 5.0 g/t Au within Argus North but was stopped short before reaching the projection of the Western Extension. The hole was re-entered as MC25-242EXT and extended, intersecting the Western Extension where anticipated, returning 70.3 m grading 2.3 g/t Au, including 28.6 m grading 4.7 g/t Au, and two higher-grade subintervals which returned 1.0 m grading 28.3 g/t Au and 2.1 m grading 22.4 g/t Au.
The Munro-Croesus Project is located along Highway 101 in the Abitibi greenstone belt and includes the past-producing Croesus Gold Mine. The Project covers 109 km2 of geology within the influence of major gold-bearing structural breaks.
Onyx Gold Corp. is focused on district-scale gold opportunities in Timmins, Ontario, and Yukon Territory. In the Timmins Gold Camp, Onyx controls an extensive portfolio anchored by the Munro-Croesus Property. Beyond Ontario, Onyx holds a commanding land position across four properties in Yukon’s Selwyn Basin.
“We are extremely encouraged by the confirmation of the Western Extension at Argus North,” said Brock Colterjohn, President & CEO of Onyx Gold Corp. “Extending our hole to intersect another impressive zone of mineralization – over 70 meters at more than 2 g/t Au, including significant higher-grade intervals – deepens our confidence in the scale and continuity of this compelling system.”
The Company’s ongoing drill program at Munro-Croesus continues to demonstrate that Argus is not a single-zone discovery, but an emerging multi-style gold system. The Program advances six goals simultaneously: Higher-Grade Argus North Growth, Broad Near-Surface Bulk-Tonnage at Argus Main, Argus West & The Newly Prioritized Argus Fault, Repetition Potential Along the Pipestone Fault Corridor, Ultra-High Grade at Croesus / GM / C-Zone, and District-Scale Regional Upside.
Significant Assay Results for Argus North Drill Holes Reported in this Release can be found here: https://onyxgold.com/projects/munro-croesus-gold/
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Source: Onyx Gold
