BMM Strikes 66,810ppm TREO at Desert Star Project California

BMM Strikes High-Grade REE Gold with Desert Star Following Phase 2 Sampling Program

Bayan Mining and Minerals Limited (ASX: BMM) has delivered exceptional rare earth element results from its Phase 2 surface sampling programme at the desert star project at bayan mining and minerals ltd in California. Rock chip samples returned up to 66,810 ppm TREO and heavy mineral concentrates yielded up to 91,092 ppm TREO. The results represent a substantial upgrade from the company's initial reconnaissance programme and position Desert Star as a highly prospective REE system within the globally significant Mountain Pass district.

Located just 4.5 kilometres northeast of MP Materials' Mountain Pass REE Mine—one of the world's largest and highest-grade rare earth operations—the desert star project at bayan mining and minerals ltd has demonstrated remarkable continuity and grade enhancement across multiple sampling media.

Outstanding Grade Results Across Multiple Sample Types

The Phase 2 programme collected 73 rock chip samples and 56 heavy mineral concentrate samples, with both sample types confirming robust REE mineralisation. Furthermore, the standout results showcase the project's exceptional potential across diverse geological settings.

Top Rock Chip Results:

• 66,810 ppm TREO (6.68% TREO) – Sample 19583
• 6,220 ppm TREO – Sample 19593
• 5,458 ppm TREO – Sample 19594
• 4,979 ppm TREO – Sample 19544
• 4,551 ppm TREO – Sample 19569

Top Heavy Mineral Concentrate Results:

• 91,092 ppm TREO (9.11% TREO) – Sample 19597
• 34,330 ppm TREO (3.43% TREO) – Sample 19598
• 8,793 ppm TREO – Sample 19509
• 6,632 ppm TREO – Sample 19513
• 2,796 ppm TREO – Sample 19511

These results demonstrate significant grade enhancement from the Phase 1 reconnaissance programme, which returned results up to 7,841 ppm TREO. Consequently, the company's systematic approach to target refinement is delivering outstanding results.

Understanding Total Rare Earth Oxides (TREO)

Total Rare Earth Oxides (TREO) represents the combined concentration of all rare earth elements expressed as their oxide equivalents. This industry-standard metric includes both light rare earth elements (LREEs) like lanthanum, cerium, and neodymium, and heavy rare earth elements (HREEs) such as dysprosium, terbium, and yttrium.

For investors, TREO grades above 1,000 ppm (0.1%) are considered significant in exploration contexts, while grades above 5,000 ppm (0.5%) are exceptional. In addition, BMM's results of up to 66,810 ppm (6.68%) in rock chips and 91,092 ppm (9.11%) in heavy mineral concentrates demonstrate world-class REE potential.

Moreover, these exceptional grades validate the company's proximity advantage to the established Mountain Pass mining district and position the desert star project at bayan mining and minerals ltd as a potential tier-one REE development.

What Makes These TREO Grades Exceptional?

Industry benchmarks reveal that most REE exploration projects struggle to achieve consistent TREO grades above 2,000 ppm. However, BMM's Phase 2 programme has delivered multiple samples exceeding 5,000 ppm, with peak values approaching 7% TREO. This grade distribution places Desert Star amongst the highest-grade REE discoveries globally in recent years.

Geological Controls Support Robust Mineralising System

The Phase 2 sampling programme targeted structurally controlled, oxidised pegmatitic and gneissic lithologies with carbonate veining, brecciation, and Fe-oxide alteration. These geological characteristics are consistent with REE-hosting systems recognised within the Mountain Pass district.

"The concentration of high-grade TREO results from both rock chip and heavy mineral concentrate sampling strongly supports the presence of a nearby primary REE source and validates our exploration model," said Fadi Diab, Executive Director.

Key Geological Features:

• Paleoproterozoic metamorphic and igneous basement rocks
• Mesoproterozoic alkaline and carbonatite intrusives including shonkinite, syenite, and granite
• Major structural corridors including Ivanpah and Clark Mountain faults
• Magmatic-hydrothermal alteration assemblages (barite, fluorite, hematite, phlogopite, calcite)

The fenite-style REE exploration model supported by integrated geological, geochemical, and geophysical datasets suggests mineralisation is focused along major structural corridors and intrusive margins. Furthermore, this represents exactly the type of geological setting that has made Mountain Pass one of the world's premier REE operations.

How Do These Geological Features Compare to Mountain Pass?

Mountain Pass operates within a similar geological framework characterised by carbonatite intrusions and associated fenite alteration zones. The desert star project at bayan mining and minerals ltd shares these critical geological signatures, including comparable structural controls and alteration assemblages. This geological analogy provides strong support for the project's potential to host significant REE mineralisation.

Regulatory Approval Clears Path to Drilling

BMM has secured a critical milestone with the U.S. Bureau of Land Management (BLM) approving the Plan of Operations (PoO) for the project. This regulatory clearance provides the company with the necessary permits to advance field activities and progress toward drilling programmes.

The approval comes at an opportune time, as the company has already delineated four coherent high-priority REE targets supported by geophysical and geochemical signatures consistent with carbonatite-hosted systems.

Immediate Work Programme:

• Systematic field programmes targeting high-priority zones
• Additional targeted sampling at Desert Star North
• Drill testing of priority targets (planned for 2026)
• Further refinement of geological model

However, the company acknowledges that drill contractor availability and seasonal weather conditions may influence the precise timing of drilling commencement.

Strategic Location Within World-Class REE District

Desert Star's location within the Mountain Pass district provides exceptional strategic value. The project benefits from established infrastructure and proximity to proven REE operations, creating significant development advantages.

Infrastructure Advantages:

• Access to Interstate 15 motorway system
• High-voltage power transmission lines servicing Mountain Pass Mine
• Union Pacific rail line within 25 kilometres
• Renewable power infrastructure in Ivanpah Valley

Proximity to Major Operations:

• 4.5 km from MP Materials' Mountain Pass REE Mine
• 3 km from Dateline Resources' Colosseum Gold Mine (Desert Star North)
• Shared structural and geological characteristics with proven deposits

This strategic positioning offers potential future development advantages including established infrastructure, proven metallurgy in the district, and proximity to processing facilities. In addition, the shared geological framework reduces exploration risk and provides clear development pathways.

What Infrastructure Benefits Does This Location Provide?

The Mountain Pass district's established infrastructure represents hundreds of millions of dollars in prior investment. Desert Star can potentially leverage existing power infrastructure, transportation networks, and processing facilities, significantly reducing future capital requirements compared to greenfield REE developments in remote locations.

Investment Thesis: Why Desert Star Demands Attention

The desert star project at bayan mining and minerals ltd presents a compelling investment opportunity within the critical minerals sector. The combination of world-class grades, strategic location, and regulatory approval creates multiple value catalysts for investors.

The REE market continues to benefit from structural demand growth driven by renewable energy technologies, electric vehicles, and defence applications. With China controlling approximately 85% of global REE processing capacity, Western REE projects with high-grade potential and established infrastructure access are increasingly valuable strategic assets.

Furthermore, geopolitical tensions have heightened focus on critical mineral security, potentially creating premium valuations for Western REE developments with strong fundamentals.

Multi-Media Confirmation Validates Primary Source

The presence of elevated TREO across both surface rock chip samples and heavy mineral concentrate samples provides multi-media confirmation of a robust primary REE source. This geological evidence significantly de-risks the project by demonstrating effective secondary dispersion into local drainage systems.

This geological evidence significantly de-risks the project by demonstrating:

• Primary mineralisation evidenced by high-grade rock chip results
• Effective dispersion confirmed by concentrate samples in drainage systems
• Structural controls validated by consistent geological associations
• District-scale potential supported by regional geological framework

At Desert Star North, whilst REE grades are generally lower, elevated barium values of up to 2.5% Ba are spatially associated with higher REE values. Consequently, this suggests localised hydrothermal enrichment and provides clear vectors for continued exploration.

Why Is Multi-Media Confirmation Important?

Multi-media confirmation reduces exploration risk by demonstrating that mineralisation is not isolated to single sample types or locations. The consistent elevated TREO values across rock chips and heavy mineral concentrates indicate a robust and extensive mineralising system, increasing confidence in the project's potential scale and continuity.

Why Investors Should Follow BMM

Bayan Mining and Minerals has positioned itself as a significant player in the critical minerals sector. The exceptional grades, proven geological model, regulatory clearance, and strategic location create compelling upside potential for investors seeking exposure to the growing REE market.

Key Tracking Points for Investors:

1. Drill Programme Commencement – Expected 2026 subject to contractor availability
2. Target Refinement – Additional sampling at Desert Star North and priority zones
3. Resource Definition – Systematic drilling to define maiden JORC resource
4. Infrastructure Development – Leverage existing Mountain Pass district infrastructure
5. Strategic Partnerships – Potential collaboration opportunities within the district

Key Takeaway: BMM's Desert Star Project has delivered world-class REE grades up to 6.68% TREO within 4.5 kilometres of the Mountain Pass Mine, validating the district-scale opportunity. With regulatory approval secured and four high-priority drill targets defined, investors should closely monitor BMM's progression toward systematic drilling and resource definition in 2026.

Moreover, the company's systematic exploration approach and strategic location within an established REE district provide multiple pathways for value creation. As global demand for rare earth elements continues to accelerate, projects like Desert Star represent critical assets for securing Western supply chains and capitalising on the energy transition megatrend.

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