Mr. Jim MacKenzie reports

VISCOUNT MINING CORP. ADVANCES HIGH-POTENTIAL PASSIFLORA DISCOVERY WITH STRATEGIC AIRBORNE SURVEY CONTRACT WITH ROSOR EXPLORATION IN SILVER CLIFF, COLORADO

Viscount Mining Corp. has executed a contract with Rosor Exploration Corp. to undertake a high-resolution airborne electromagnetic (EM) and magnetic survey at its flagship Silver Cliff project in Colorado.

This program represents a key step in Viscount's systematic approach to advancing its understanding of the district-scale mineral system and further advancing its understanding of an interpreted gold-copper porphyry system identified at depth.

The newly commissioned airborne survey is expected to:

• Sharpen drill targeting across the broader system;
• Identify additional high-priority zones for expansion;
• Define the scale and continuity of mineralization at depth.

Importantly, earlier geophysical work has already outlined a deep anomaly extending to approximately 1.5 kilometres, suggesting the system could be significantly larger than initially interpreted.

By deploying advanced geophysics at this stage, Viscount is positioning itself to accelerate discovery and maximize the impact of future drilling campaigns, a key value driver for shareholders.

With both a substantial silver resource at Kate and a rapidly emerging gold-copper opportunity at Passiflora, the Silver Cliff project is evolving into a compelling multicommodity exploration story in a proven mining jurisdiction.

Under the agreement, Rosor will deploy its advanced drone-based EM and magnetic surveying platform across approximately 3.5 square kilometres of the Silver Cliff property. The survey is designed to generate high-resolution subsurface data, including 2-D and 3-D resistivity models and detailed magnetic data sets, which will assist in delineating geological structures, alteration zones and potential mineralized targets.

Importantly, this program is designed to complement and enhance the company's prior deep-penetrating Titan MT geophysical survey conducted by Quantec Geoscience. While the Quantec study identified a large-scale, coherent anomaly at depth consistent with a potential porphyry system, the Rosor survey will provide higher-resolution data to bridge near-surface and intermediate depths. Together, these data sets are expected to significantly improve targeting by linking deep conductive features to shallower structural and alteration patterns.

Building on Passiflora discovery drilling

The Rosor survey builds directly on Viscount's recent discovery drilling at the Passiflora target, where the company completed its first deep drill hole (PF-03A), intersecting:

• 843.9 metres of continuous gold-copper mineralization averaging approximately 0.214 per cent copper equivalent (CuEq)*;
• Including 189 metres at 0.326 per cent CuEq, with a higher-grade interval of 45 metres at 0.417 per cent CuEq*;
• And 99 metres at 0.278 per cnet CuEq, including 24 metres at 0.306 per cent CuEq *.

These results are notable in that they exceed typical early-stage porphyry exploration thresholds (approximately 0.15 per cent CuEq) and demonstrate strong grade continuity over significant widths.

Drilling also confirmed:

• Gold present in all assayed samples, with values up to 918 parts per billion (ppb);
• Increasing copper grades with depth;
• A multimetal system including copper, gold, molybdenum, zinc, and lead;
• A large, continuous mineralized system open in all directions and at depth.

These results validate the interpretation of a gold-rich copper porphyry system, consistent with the large conductive anomaly originally identified by Quantec.

Strategic integration of geophysics and drilling

The Rosor program is expected to materially enhance the company's ability to vector toward the core of the system by:

• Increasing resolution around the Passiflora discovery area;
• Identifying structural controls and potential feeder pathways;
• Linking shallow geophysical signatures with deep MT anomalies;
• Refining targets for follow-up deep drilling.

By integrating Rosor's high-resolution airborne data with the Quantec data set and confirmed drilling results, Viscount is advancing a layered exploration approach designed to systematically derisk and expand the system.

Management commentary

"Signing this agreement with Rosor marks another important milestone in our methodical and disciplined approach to exploration at Silver Cliff," said Mark Abrams, vice-president of exploration for Viscount. "The integration of this high-resolution airborne survey with our existing Quantec data set provides a powerful framework to vector toward what we believe may represent a large-scale gold-copper porphyry system. We are systematically derisking and unlocking the full potential of the project."

* Assumptions for copper equivalent per cent calculations

Metal prices -- 2024 averages: Cu (copper) at $4.20 per pound (lb); Au (gold) at $34,838.79 per lb ($2,389 per ounce (oz)); Pb (lead) at $1.0345 per lb; Zn (zinc) at $1.40 per lb; and Mo (molybdenum) at $22.50 per lb.

Recovery rates -- based on Western North American copper porphyry production disclosures: Cu at 90 per cent; Au at 70 per cent; Pb at 60 per cent; Zn at 67 per cent; and Mo at 80 per cent.

Qualified person

The scientific and technical information contained in this news release has been reviewed and approved by Harald Hoegberg, CPG, an independent consulting geologist who is a qualified person (QP) as such term is defined under National Instrument 43-101, Standards of Disclosure for Mineral Projects.

About Viscount Mining Corp.

Viscount Mining is a project generator and mineral exploration company focused on advancing high-quality silver, gold and copper assets in the Western United States. The company's portfolio includes the Silver Cliff silver project in Colorado and the Cherry Creek multimetal district in Nevada.

Silver Cliff project -- Colorado

Silver Cliff is in the historic Hardscrabble silver district and comprises 96 lode claims with year-round paved access and established local infrastructure. The project covers a large volcanic caldera system recognized for its silver, gold and base metal potential.

The property includes two principal zones of focus:

• Kate deposit (silver resource area): Kate hosts a National Instrument 43-101-compliant near-surface silver resource published by an independent QP (Measured and indicated and inferred silver resources were reported in the company's technical disclosure; investors are encouraged to review the full technical report available on SEDAR+ for tonnage, grade and methodology.).
• Passiflora porphyry target: Historical and modern drilling indicates extensive hydrothermal alteration consistent with a large porphyry system. Recent drilling by Viscount (hole PF-23-03A) intersected 843.9 metres of continuous gold-copper mineralization, which the company interprets as being on the periphery of a potentially larger intrusive centre. Mineralization remains open in multiple directions.

Cherry Creek project -- Nevada

Cherry Creek covers 219 unpatented and 19 patented claims in a historic mining district approximately 50 miles north of Ely. The property includes more than 20 past-producing mines and hosts several styles of mineralization, including silver-gold veins, carbonate-replacement (CRD) zones, jasperoids and porphyry-related alteration. The district is 100 per cent controlled by Viscount and is considered highly prospective for multimetal discoveries within the broader mineralized system.

For additional information regarding the above-noted property and other corporate information, please visit the company's website.

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