Every Drill Hole Strikes Antimony at Australia's Largest Undeveloped Deposit
Marquee Resources (ASX: MQR) has announced remarkable results from its maiden drilling program at the Mount Clement (Eastern Hills) Antimony Project in Western Australia, with all seven drill holes intersecting antimony mineralisation—achieving a perfect 100% success rate.
The 1,346-metre drilling campaign has confirmed both strike and depth extensions to historical mineralisation while also discovering new mineralised structures at what is adjacent to Australia's largest undeveloped antimony deposit.
Consistent High-Grade Results Across Multiple Zones
The drilling delivered numerous significant antimony and lead intersections, including:
- 8m at 1.05% Sb and 2.85% Pb from 137m (MQRC390)
- 8m at 1.02% Sb from 81m (MQRC394)
- 9m at 0.88% Sb from 97m (MQRC391)
- 2m at 1.96% Sb from 144m (MQRC394)
- 3m at 1.27% Sb from 24m (MQRC392)
"We are extremely encouraged by the outcomes of our first phase of drilling at Mt Clement. Every hole intersected antimony mineralisation and validates our geological model. Importantly, we've also identified new mineralisation structures that could substantially increase the scale of the system," said Executive Chairman Charles Thomas.
Strategic Positioning Next to Major Resource
Marquee's project sits adjacent to Black Cat Syndicate's (ASX: BC8) Eastern Hills Antimony Mineral Resource, which has been described as Australia's largest undeveloped antimony project and the fourth largest antimony JORC Resource in Australia (794kt @ 1.7% Sb, approximately 13,000 tonnes).
This strategic location gives Marquee significant leverage in the antimony market, which is seeing increased demand for this critical metal used in flame retardants, lead-acid batteries, and military applications.
What Is Antimony and Why It Matters
Antimony (Sb) is classified as a critical mineral by many countries including the United States, European Union, and Australia due to its strategic importance and supply risks. This semi-metal has several key applications:
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Flame Retardants: Antimony trioxide is widely used in flame-retardant formulations for textiles, plastics, and building materials, representing approximately 60% of global antimony consumption.
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Lead-Acid Batteries: Antimony is alloyed with lead to improve hardness and electrical properties in lead-acid batteries used in vehicles and energy storage systems.
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Military Applications: Essential for producing ammunition, infrared detection devices, and night-vision equipment.
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Industrial Applications: Used in catalysts, glass, and ceramics manufacturing.
The antimony market faces significant supply constraints with China controlling approximately 60% of global production. This concentration of supply creates strategic vulnerabilities for Western economies, particularly as demand for antimony in flame retardants and battery applications continues to grow.
Current antimony prices remain robust, with the metal trading at approximately US$12,500-13,500 per tonne, supporting the economic potential of new antimony developments outside of China.
Upcoming Catalysts and Future Plans
Several near-term catalysts for Marquee include:
- Maiden Mineral Resource Estimate – Expected before the end of August 2025
- Phase 2 Drilling – Set to commence later this quarter
- Additional Assay Results – Multi-element assays including gold and silver expected within 3-4 weeks
The company has confirmed that all holes from Phase 1 are now fully permitted for the upcoming Phase 2 program, which will target further strike and depth extensions.
Investment Potential: Why Marquee Deserves Attention
For investors looking at critical minerals exposure, Marquee offers several compelling advantages:
- Strategic Metal Focus – Antimony is a critical mineral with limited production outside China
- Proven Mineralisation – 100% hit rate demonstrates consistent antimony presence
- Resource Growth Potential – New structures discovered suggest larger mineralised system
- Near-Term Catalysts – Maiden resource estimate and expanded drilling program coming soon
- Adjacent to Major Resource – Positioned alongside Australia's largest undeveloped antimony deposit
The success of Marquee Resources Ltd drilling campaign has already identified multiple zones of antimony mineralisation, with the deepest hole (MQRC395) intercepting 20m at 0.26% Sb from 232m, indicating the mineralisation remains open at depth. This suggests significant potential for resource expansion in future drilling campaigns.
With early exploration success and multiple upcoming catalysts, Marquee Resources provides investors with direct exposure to critical minerals at a time when secure supply chains for these materials are increasingly prioritised by governments and industry alike.
Ready to Invest in Critical Minerals Future?
To learn more about Marquee Resources' promising antimony discoveries at Mount Clement and their strategic position adjacent to Australia's largest undeveloped antimony deposit, visit www.marqueeresources.com.au today. With a perfect 100% drilling success rate and a maiden resource estimate coming soon, this ASX-listed critical minerals opportunity offers significant growth potential in a market facing supply constraints.
