The Mt Clement Antimony-Gold Project is located in Western Australia at the western end of the Ashburton Basin in the northern Capricorn Orogen, approximately 30km southwest of Black Cat Syndicate’s Paulsens gold mine. Marquee’s landholding covers approximately 463km2 across ten tenements, including applications, and includes the Eastern Hills antimony deposit together with broader gold, antimony, lead and silver targets.

Mt Clement is Marquee’s flagship antimony-gold project. The Eastern Hills deposit is contiguous with the eastern flank of the Eastern Hills antimony mineral resource owned by Black Cat Syndicate Ltd, whose portion has been described by Black Cat as Australia’s largest undeveloped antimony deposit.
Following completion of the Phase 2 drilling campaign, Marquee announced an updated February 2026 Inferred Mineral Resource Estimate for Mt Clement (Eastern Hills) of 1.93Mt at 0.6% SbEq for 11,000t SbEq of contained metal, including 10,000t contained antimony. The resource is reported at cut-off grades of 0.15% SbEq for open pit material and 0.35% SbEq for underground material, and all resources are classified as Inferred under JORC 2012.
The updated MRE represents a 69% increase from the maiden resource and confirms Mt Clement as a material antimony asset within Marquee’s portfolio. Antimony mineralisation is associated with lead, silver and gold credits, providing a polymetallic project setting with multiple avenues for further technical assessment.
The Phase 2 RC drilling program comprised 2,908m across 14 holes and brought total project drilling at Eastern Hills to 4,254m across 21 RC holes over two campaigns. The program tested the Taipan, Gwardar and Dugite zones, delineated eight new mineralised structures, confirmed antimony mineralisation in all reported holes and established the new Dugite Zone.
Marquee has also commenced a broader gold assessment across the Mt Clement tenure. Initial orientation rock-chip sampling at the historic Black Adder prospect returned high-grade gold results of up to 9.7g/t Au, establishing Black Adder as the first target under the broader tenement-wide gold strategy. The Company’s ongoing work is directed toward resource growth at Eastern Hills and systematic validation of antimony and gold targets across the wider project area.