Marquee Resources has announced a substantial 69% increase in its Mt Clement (Eastern Hills) inferred mineral resource, now containing 11,000 tonnes of antimony equivalent metal, positioning the project as a key player in Australia's critical minerals landscape.
- Inferred Mineral Resource Estimate expanded to 1.93Mt at 0.6% SbEq
- Contained antimony metal increased to 10,000 tonnes
- Phase 3 drilling program set to commence in March 2026
- Ongoing metallurgical test work and strategic partnership talks with Yantai Jinao
- Resource zones remain open for further expansion at depth and along strike
Resource Expansion Signals Major Step for Marquee
Marquee Resources Limited (ASX – MQR) has delivered a significant boost to its Mt Clement (Eastern Hills) project in Western Australia, announcing a 69% increase in its inferred mineral resource estimate. The updated resource now stands at 1.93 million tonnes grading 0.6% antimony equivalent (SbEq), equating to 11,000 tonnes of contained metal, with antimony itself contributing 10,000 tonnes. This milestone marks a pivotal moment for Marquee, elevating the project’s scale and strategic importance within Australia’s critical minerals sector.
Drilling Success and Exploration Potential
The resource expansion follows the completion of a Phase 2 drilling campaign in late 2025, which delineated multiple new mineralised structures across the Taipan, Gwardar, and Dugite zones. Notably, the mineralisation remains open at depth and along strike, underpinning the company’s confidence in further resource growth. Marquee has outlined an Exploration Target of approximately 2 to 4 million tonnes at grades between 0.7% and 1.1% antimony, highlighting substantial upside potential pending additional drilling.
Strategic Partnerships and Metallurgical Progress
Marquee’s strategic engagement with Chinese partner Yantai Jinao is advancing in parallel with exploration activities. The company has completed two shipments of high-grade ore for metallurgical testing, with results meeting expectations and supporting ongoing development workstreams. Recent executive meetings in China have been described as highly constructive, focusing on both upstream resource development and downstream processing opportunities. This partnership is poised to enhance Marquee’s position as a credible and secure antimony supplier amid growing global demand for critical minerals.
Positioning Within the Australian Antimony Landscape
The Mt Clement (Eastern Hills) project is contiguous with Black Cat Syndicate’s antimony deposit, recognised as Australia’s largest undeveloped antimony resource. Marquee’s expanded resource places it among the leading antimony players nationally, reinforcing the project’s strategic value. With antimony increasingly viewed as a critical mineral essential for various industrial applications, Marquee’s progress aligns with broader government and industry priorities around supply security and critical mineral development.
Looking Ahead
Marquee plans to commence a Phase 3 drilling program in March 2026, targeting extensions to the known mineralisation and providing further samples for metallurgical testing. The company’s focus on resource growth, metallurgical validation, and strategic partnerships sets the stage for accelerated development and potential production. As the project evolves, Marquee aims to solidify Mt Clement as a cornerstone asset driving shareholder value and contributing to Australia’s critical minerals supply chain.
Bottom Line?
Marquee’s resource upgrade and strategic collaborations position Mt Clement as a rising star in Australia’s critical minerals sector, with upcoming drilling and test work set to shape its next growth phase.
Questions in the middle?
- How will Phase 3 drilling results influence the resource classification and project economics?
- What are the timelines and terms for potential offtake or joint venture agreements with Yantai Jinao?
- How might global antimony market dynamics impact Marquee’s development strategy and valuation?