VANCOUVER, BC – Western Star Resources Inc. (CSE: WSR) (OTC: WSRIF) (FRA: 4K2) has announced the results of a district-scale three-dimensional geophysical inversion across its Rowland and White Star tungsten properties in Elko County, Nevada. The modelling has defined buried and partially exposed intrusive bodies and refined the fault network interpreted to channel mineralising fluid into the tungsten skarn system. Importantly, the Company’s highest-grade rock chips, 4.02% WO3 at Rowland and 3.00% WO3 at White Star (reported on July 28, 2026), both correspond spatially with the contact between these modelled intrusive rocks and the carbonate host. The modelled intrusive framework extends well beyond the limits of mapped outcrop, opening substantial new search space across both properties.
Blake Morgan, CEO and President of Western Star, stated, “This is the result we were hoping for. The inversion has modelled intrusive bodies spatially associated with areas where we sampled high grade tungsten values, and it has mapped the faults that we believe carried the fluid there. That is the tungsten skarn recipe, and we can now see it in three dimensions across the whole district. Better still, the modelled intrusives are more extensive than has been previously mapped, which means the ground that has produced our best rock chips continues into untested areas. Soil geochemistry from Phase 2 is due back shortly and we can use these in our drill hole planning.”
The inversion was completed by Warren Hughes, P.Geo., of East Coast Consulting using Geosoft Oasis Montaj and the MAG3D algorithm with 25-meter cells. Key highlights include: the modelling defines buried and partially exposed intrusive bodies, with a causative intrusion being an essential ingredient of a tungsten skarn system; the Company’s highest-grade rock chips are associated with contacts between modelled intrusive rocks and carbonate host rocks, adjacent to interpreted structures; approximately 25 kilometres of structure has been interpreted in two dominant orientations, northeast-southwest and northwest-southeast, interpreted as fluid conduits that fed the skarn; the modelled magnetic domains correspond closely with units mapped by Coats (1964); and the inversion resolves geology beneath extensive Quaternary cover on the eastern flank, providing exploration vectors into ground that cannot be mapped or sampled at surface.
The tungsten skarn model, as set out in the U.S. Geological Survey assessment of tungsten skarn resources across the Great Basin (Lederer and others, 2021), requires three elements: an intrusion to drive the system, reactive carbonate rock to host replacement, and structures to focus fluid. Western Star’s properties fit this model, with Coats (1964) mapping a quartz monzonite intrusion, a Palaeozoic carbonate sequence, and skarn at the contact. The high-grade samples at Rowland (4.02% WO3) and White Star (3.00% WO3) sit directly on the mapped tactite where it abuts the modelled intrusive body, within or adjacent to interpreted structural corridors.
The modelled intrusive extends considerably beyond mapped outcrop, expanding search space. The inversion adds depth and continuity to Coats’ mapping, which was published as U.S. Geological Survey Bulletin 1141-M. The Company intends to use this to refine the geological model through targeted field mapping.
Next steps include integrating soil geochemistry results from Phase 2, expected shortly, with the inversion model, structural framework, and geological mapping to build a single targeting model. Follow-up field mapping and sampling will refine the geological model, and resulting targets will be ranked to support the drill programme and permitting process now underway.
Western Star also announced it has satisfied the first performance milestone under the option agreement for the Rowland tungsten project with NorthEx Capital Partners Inc. and 1249445 BC Ltd. The milestone required increasing the total project claim area by at least 30% and identifying at least three rock-chip samples grading above 2.0% WO3. The Company expanded the claim package from ten unpatented claims (approximately 84 hectares) to 221 hectares, an increase of approximately 165%, and rock-chip sampling returned four samples above 2.0% WO3: 4.02% (RO-16-01), 2.69% (RO-19-15), 2.56% (RO-19-10) and 2.11% WO3 (RO-16-02). As a result, the Company will issue 500,000 common shares to the vendors, valued at the 10-day volume-weighted average price preceding the verification date, subject to Canadian Securities Exchange policies.
The scientific and technical information in this news release has been reviewed and approved by Jasper Mowatt, MIMMM, MAusIMM, a consultant to the Company and a Qualified Person as defined by National Instrument 43-101. The UAV magnetic survey was conducted by AJ Mining LLC using a DJI Matrice M300 platform carrying a GSMP-35U v8.0 potassium vapour magnetometer at a nominal sensor height of 70 metres, with flight lines oriented east-west at spacings of 25 to 100 metres. Approximately 110 line-kilometres were processed over approximately 3,000 acres. Processing and inversion were completed by Warren Hughes, P.Geo., using Geosoft Oasis Montaj and the MAG3D algorithm on a 50-metre cell after removal of the regional field. All coordinates are reported in NAD83 UTM Zone 11N. Magnetic susceptibility is a physical rock property and not a direct measurement of mineralisation; interpretations require confirmation by drilling.
For further details, visit the Company’s website at www.westernstarresources.com.
