Zeus Resources Uncovers Visible Antimony Mineralisation at Casablanca Project

Zeus Resources Strikes Visible Antimony at Casablanca: First Trench Delivers Early Success

The Zeus Resources antimony discovery marks a significant breakthrough in Morocco's emerging critical minerals sector, as the company has successfully uncovered visible antimony oxide mineralisation in its inaugural trench at the Casablanca Antimony Project. Zeus Resources Limited (ASX: ZEU) has delivered its first major milestone with visible antimony oxide mineralisation exposed in the completed exploration trench, positioning the company at the forefront of antimony exploration in this geologically prospective region.

The completed 24-metre trench has exposed what geologists estimate to contain 10% combined sulphide and oxidised antimony minerals, including high-value species such as Stibnite (Sb₂S₃), Stibiconite (Sb₃O₆), and Valentinite (Sb₂O₃). While visual estimates await laboratory confirmation, this discovery validates Zeus's geological targeting and positions the company for potential resource expansion across its remaining seven planned trenches.

Mineralisation Discovery Confirms Geological Model

The exposed antimony-bearing quartz vein in Trench 1 (T1) demonstrates both concordant and discordant orientations, confirming the structural controls that Zeus's geological team had predicted. Furthermore, the mineralisation occurs within folded sandstone and shale formations along an anticline flank—exactly the geological setting that historical French mining operations successfully targeted during the 1940s.

Key Geological Observations:

• Primary mineralisation: Massive shiny-metallic-grey Stibnite (Sb₂S₃) occurring as disseminations within metasedimentary host rocks

• Secondary oxidation: Well-developed suite of antimony oxides including Stibiconite and Valentinite with abundant iron oxides

• Structural controls: Multiple phases of thermal fluid flow evident from both bedding-parallel and crosscutting fracture relationships

• Vein geometry: Strongly oxidised antimony-bearing quartz vein developed within the anticline architecture

The presence of both primary sulphide and secondary oxide minerals suggests a well-developed weathering profile. Consequently, this could potentially simplify future metallurgical processing—a significant advantage for antimony projects where complex mineralogy often presents processing challenges.

Understanding Antimony: A Critical Mineral for Modern Industry

Antimony represents one of the world's most strategically important critical minerals, classified as such by major economies including the United States, European Union, Japan, and Australia. This silvery-white metalloid plays essential roles across multiple high-growth industries that form the backbone of modern technology and infrastructure.

Primary Applications:

• Flame retardants: Critical component in textiles, plastics, and electronics safety systems

• Lead-acid batteries: Essential additive for improved battery performance and longevity

• Semiconductors: Key material in infrared detectors and high-speed electronic devices

• Defence applications: Vital for military equipment, ammunition, and specialised alloys

Market Fundamentals and Supply Constraints

The antimony market faces severe supply constraints, with production dominated by a small number of global producers. China controls approximately 60% of global supply, creating significant supply chain vulnerabilities for Western manufacturers. This dynamic has driven antimony prices to attractive levels whilst governments actively seek to diversify their supply sources.

For instance, the Zeus Resources antimony discovery positions well-located projects like Casablanca for potential strategic partnerships or offtake agreements. Critical mineral designation stems from antimony's irreplaceable role in flame retardant applications, where the element forms compounds that release water vapour when heated.

However, no substitute materials provide equivalent performance across the temperature and chemical resistance ranges required for industrial applications. This makes antimony discoveries particularly valuable in today's supply-constrained environment.

Systematic Exploration Program Targets Multiple Zones

Zeus's trenching program represents a methodical approach to testing geophysical anomalies identified through its comprehensive High Resolution Resistivity and Induced Polarisation (IP) survey completed in August 2025. The 25-profile geophysical program covering both 550m and 1,050m lines successfully identified multiple electrical discontinuities associated with antimony corridors.

Remaining Trenching Program:

Total Program: 129 metres of systematic trenching designed perpendicular to established antimony corridors identified through geophysical surveys.

The geophysical survey utilised dipole-dipole array technique with 25m station spacing. Additionally, it employed ELREC Terra Resistivimeter and TIP 6000 Transmitter equipment from IRIS Instruments. Results revealed several electrical discontinuities, most subvertical and dipping southwest, with resistant corridors probably related to quartz veins.

Laboratory Results to Drive Next Phase Planning

Zeus has submitted samples from the mineralised intervals in Trench 1 for comprehensive geochemical analysis, with assay results expected within 4-5 weeks subject to laboratory turnaround times. These results will provide crucial data for advancing the Zeus Resources antimony discovery to the next exploration phase.

The laboratory analysis will focus on several key parameters:

• Antimony grades and concentration patterns within the vein system

• Continuity of mineralisation along strike and down-dip

• Metallurgical characteristics of both sulphide and oxide mineral assemblages

• Deleterious elements that could impact future processing decisions

Furthermore, the company has committed to releasing results immediately upon receipt and validation, ensuring investors receive timely updates on this critical dataset.

Visual estimates of mineral abundance should never be considered a proxy or substitute for laboratory analyses where concentrations or grades are the factor of principal economic interest. Visual estimates also potentially provide no information regarding impurities or deleterious physical properties relevant to valuations.

Next Phase Activities

The upcoming exploration activities will build upon the initial success:

1. Complete remaining 7 trenches following administrative approvals

2. Geological interpretation of trench results to refine structural understanding

3. Drill target generation based on combined geophysical and trench data

4. Resource drilling program to test continuity at depth and along strike

What Makes Morocco an Attractive Mining Destination?

The Casablanca Antimony Project benefits from Morocco's modern exploration and mining regulatory framework, which has attracted significant international mining investment over the past decade. The country's mining-friendly approach includes established infrastructure and regulatory systems that support systematic exploration programs.

Regulatory Framework:

• Stable government with consistent mining policy implementation

• Modern Mining Code aligned with international standards

• Streamlined permitting for exploration and development activities

• Strong geological potential in underexplored terrains

• Strategic location providing access to European and global markets

Operational Infrastructure Advantages

Morocco offers several operational benefits that support mining development:

• Skilled local workforce with established mining experience

• Transportation networks including ports, roads, and power infrastructure

• Political and economic stability supporting long-term investment commitments

• Local expertise available through established mining service providers

This combination of geological prospectivity and jurisdictional stability positions Zeus to advance its antimony projects efficiently. In addition, it minimises typical emerging market risks whilst maximising exploration potential.

The Casablanca Project comprises six granted Exploration Research Licenses covering approximately 78.6 km² of prospective antimony terrain.

Investment Thesis Strengthens with Early Success

The successful identification of visible antimony mineralisation in Zeus's first trench validates multiple aspects of the company's exploration thesis. However, the discovery demonstrates more than just geological understanding—it confirms systematic targeting success and structural model accuracy.

Geological Validation:

• Accurate targeting: Geophysical anomalies correlate with actual mineralisation

• Structural understanding: Anticline architecture controls match field observations

• Historical context: Confirmation of mineralisation style consistent with past-producing French operations

• Mineral assemblage: Primary Stibnite with secondary oxide development indicates mature weathering profile

Strategic Market Position

The Zeus Resources antimony discovery provides several strategic advantages:

• Critical mineral exposure: Direct leverage to supply-constrained antimony market

• Early-stage opportunity: Potential for significant value creation through systematic exploration

• Scalable project: Multiple target areas identified across substantial land package

• Jurisdiction advantage: World-class mining destination with established infrastructure

The company's previous rock chip sampling program across the southern licence area returned exceptionally high-grade antimony results. For instance, samples returned between 7.8% and 46.52% Stibnite from twenty samples targeting Stibnite-bearing quartz veins.

These results, combined with the current trench success, demonstrate consistent antimony mineralisation across multiple geological settings within the project area.

What Are the Investment Catalysts and Forward Outlook?

Zeus Resources has positioned itself as one of the few pure-play antimony exploration companies with projects in a tier-one mining jurisdiction. Consequently, the combination of critical mineral exposure, early exploration success, and systematic development approach creates multiple pathways for value creation.

Immediate Catalysts:

• Assay results: Laboratory confirmation of Trench 1 mineralisation within 4-5 weeks

• Trenching completion: Seven additional trenches targeting geophysical anomalies

• Administrative approvals: Progression of temporary occupancy authorisation for expanded program

• Geological interpretation: Structural understanding refinement based on trench results

Medium-term Development Opportunities

The forward outlook for the Zeus Resources antimony discovery includes several development pathways:

• Drill program design: Target generation based on combined geophysical and trench data

• Resource drilling: Testing continuity at depth and along strike extensions

• Metallurgical assessment: Processing characteristics evaluation for both sulphide and oxide minerals

• Resource estimation: Potential maiden resource calculation following successful drilling

The Board authorised the release of this announcement to the ASX, with Director Hugh Pilgrim available for further enquiries. The systematic approach to exploration reflects Zeus's commitment to methodical target testing and geological understanding advancement.

Future Prospects and Market Opportunity

The successful completion of Trench 1 represents the initial validation of Zeus's systematic exploration approach at Casablanca. With visible antimony minerals confirmed in the first trench and seven additional targets awaiting testing, the company offers investors exposure to both exploration upside and the strategically important antimony market.

Furthermore, the Zeus Resources antimony discovery demonstrates the company's ability to execute its geological targeting effectively. This success provides confidence in the remaining exploration program and potential for additional discoveries across the broader project area.

For investors seeking exposure to critical minerals in a world-class mining jurisdiction, Zeus Resources presents a compelling opportunity. The upcoming assay results and expanded trenching program provide multiple near-term catalysts for continued exploration advancement and potential resource definition.

In addition, the strategic importance of antimony as a critical mineral ensures continued government and industry focus on supply diversification. This creates favourable market conditions for successful antimony discoveries like Zeus's Casablanca project.

Could Zeus Resources Transform Into Morocco's Next Antimony Success Story?

With visible antimony mineralisation confirmed in the very first trench and seven additional targets awaiting testing, Zeus Resources is methodically advancing what could become a significant critical minerals discovery. The company's systematic approach to exploring the geologically prospective Casablanca project, combined with upcoming assay results and an expanded trenching programme, positions Zeus at an exciting inflection point. To discover how this early-stage antimony explorer is leveraging Morocco's mining-friendly jurisdiction and strategically important critical mineral exposure, visit the Zeus Resources website for comprehensive project details and the latest exploration updates.