Catalina Resources Uncovers High-Grade Tungsten Mineralisation at Santy Well in WA's Tallering Project

Catalina Resources Expands Tallering Project’s Potential with Critical Tungsten Discovery

Catalina Resources has revealed broad tungsten mineralisation at the Santy Well Prospect, significantly enhancing the mineral potential of its Tallering Project in Western Australia's Murchison region. This discovery stems from a systematic review of decades of historical exploration data, which had largely overlooked tungsten despite its presence alongside gold, silver, and copper mineralisation. Executive Director Ross Cotton emphasized that identifying tungsten, a critical mineral, adds a valuable new dimension to the project and reinforces the company’s belief that Santy Well is an emerging polymetallic exploration opportunity.

The company continues to integrate historical drilling, geological mapping, surface geochemistry, and recent rock-chip sampling to better understand mineralisation controls and assess the tungsten system’s scale and significance. Previous exploration mainly targeted gold and base metals, leaving tungsten potential largely untested. This presents a clear opportunity for Catalina to reassess the project’s broader mineral potential through a thorough technical review of all historical datasets.

Historical Drilling Highlights Multiple High-Grade Tungsten Intersections Over Wide Area

Historical reverse circulation (RC) drilling at Santy Well has revealed several significant tungsten-bearing intersections demonstrating both extent and grade. The most notable was drill hole SRC006, which intersected 17 metres at 0.178% WO3 from 79 metres depth. Within this interval, a higher-grade 4-metre zone at 0.367% WO3 included 1 metre at 0.839% WO3 from 81 metres and 1 metre at 0.531% WO3 from 82 metres. Additionally, 1 metre at 0.484% WO3 from 85 metres was recorded in the same hole.

SRC006 also contained 6 metres at 0.200% WO3 from 6 metres depth, including 3 metres at 0.224% WO3 from 9 metres. Nearby drill hole SRC007, about 100 metres west, returned 3 metres at 0.154% WO3 from 99 metres to end of hole, confirming tungsten mineralisation extends beyond a single hole. Drill hole SRC005, located between SRC006 and SRC007, intersected 1 metre at 0.077% WO3 from 52 metres, indicating continuity across the 100-metre spacing. Numerous other intervals exceeded 1,000 ppm tungsten, outlining a broad mineralised zone across the prospect.

Surface Rock-Chip Sampling Confirms Exceptionally High-Grade Tungsten at Santy Well

Surface rock-chip sampling at Santy Well has identified locally very high-grade tungsten mineralisation, with samples reaching up to 60.1% W (75.8% WO3 equivalent). These outstanding surface grades indicate enriched tungsten in the oxidised zone and suggest significant potential at depth. The combination of high-grade surface material and substantial fresh rock drill intersections points to a potentially large tungsten system warranting focused exploration.

These surface results complement subsurface drilling and validate the mineralised system geochemically. Tungsten mineralisation occurs within the same polymetallic system as historic gold, silver, and copper mineralisation, which includes surface grades up to 101 g/t gold, 710 g/t silver, and 7.04% copper. This polymetallic nature highlights Santy Well as a complex system with multiple valuable metals, potentially indicating a more extensive ore system than single-metal deposits.

Recent Field Program Supports Historical Data and Advances Technical Evaluation

Catalina’s geological team recently conducted a reconnaissance field visit to the Tallering Project to support the review of historical exploration and validate past results. The team inspected historical workings, completed geological mapping, and collected 24 rock-chip samples across the prospects to aid further project assessment. These samples aim to confirm historical data and provide updated geochemical information for ongoing evaluation.

Results from the 24 rock-chip samples are expected by the end of the current quarter. Once received, these will be integrated with historical drilling, mapping, geochemistry, and field observations to refine the geological model and identify priority tungsten targets. This comprehensive data integration is central to Catalina’s strategy to unlock additional value from Santy Well and assess the tungsten system’s scale and significance.

Polymetallic Mineralisation History Indicates Untapped Potential at Santy Well

The Santy Well Prospect has been explored by multiple operators over several decades, primarily focusing on gold and base metals. Historical activities included drilling, surface sampling, and geological mapping. However, tungsten potential was largely overlooked despite its presence within the same mineralised assemblage. This exploration bias presents Catalina with an opportunity to reassess the deposit using a modern, multi-element approach.

The polymetallic character of Santy Well—encompassing gold, silver, copper, and tungsten within one mineralised zone—suggests a complex metallogenic environment that previous explorers may have incompletely evaluated. Catalina’s ongoing technical review integrates significant historical gold, silver, and copper data with the newly identified tungsten mineralisation, aiming to develop a more comprehensive understanding of the deposit’s scale and mineral potential.

Critical Mineral Status of Tungsten Elevates Strategic Importance of Discovery

Tungsten is internationally recognised as a critical mineral due to its vital role in advanced manufacturing, defence, and clean energy technologies. This classification enhances the strategic value of Catalina’s Santy Well discovery, positioning the project within a global context of rising demand for secure critical mineral supplies. Projects defining critical mineral resources are increasingly attractive to investors and policymakers worldwide.

The coexistence of tungsten with gold, silver, and copper at Santy Well establishes the Tallering Project as a multi-commodity exploration opportunity in a historically productive region of Western Australia. Catalina’s ability to develop multiple mineral assets within one project area may provide operational and economic advantages for future exploration and development. The company’s confidence in Santy Well as an emerging polymetallic target reflects this strategic context and tungsten’s critical mineral status.

Future Exploration and Technical Review to Prioritise Tungsten Targets

Catalina Resources plans to advance the tungsten opportunity at Santy Well by completing a detailed technical review of all historical data, incorporating results from the recent rock-chip sampling expected by quarter-end, and integrating drilling, mapping, geochemistry, and new field data. This will refine the geological model and identify priority tungsten targets, enabling a systematic evaluation of the mineralisation’s scale and significance.

Following the technical review, the company will initiate heritage consultations and obtain necessary approvals to support future on-ground exploration. Planned follow-up programs include detailed geological mapping, soil geochemical sampling, and drill testing, contingent on technical outcomes and regulatory permits. This phased approach ensures exploration decisions are data-driven and compliant with all statutory and heritage requirements, demonstrating Catalina’s disciplined project development methodology.

Tallering Project Situated in Mineral-Rich Murchison Region of Western Australia

The Tallering Project, including Santy Well, is located in Western Australia’s Murchison region, a district with a strong history of mineral exploration and production. The region’s established geological credentials and infrastructure support Catalina’s exploration activities. The company’s portfolio approach, reviewing multiple prospects across the Mid-West region, reflects a strategy to build a pipeline of opportunities in prospective geological settings.

Catalina’s Mid-West portfolio positions it as an active explorer in a proven mineral province. The identification of tungsten mineralisation at Santy Well highlights the company’s capability to reinterpret historical data and uncover overlooked mineral potential. This expertise in applying modern geological insights to legacy datasets is a key competitive advantage in mature mining districts with extensive exploration histories.

Data Integration Approach Highlights Catalina’s Technical Expertise in Deposit Evaluation

Catalina Resources’ methodical re-evaluation of the Tallering Project exemplifies best practices in mineral exploration, particularly in mature districts with extensive historical data. The company’s strategy integrates historical drilling, geological mapping, surface geochemistry, and new field data to develop refined geological models that inform target prioritisation and guide exploration.

The recognition that tungsten potential was overlooked despite its presence alongside gold, silver, and copper underscores the value of applying contemporary geological and geochemical knowledge to historical datasets. Advances in analytical techniques, improved understanding of polymetallic systems, and shifting commodity priorities reveal new opportunities within well-explored projects. Catalina’s commitment to comprehensive data review and reinterpretation positions it to unlock additional value from its project portfolio.