Koba Resources Uncovers Outstanding Tungsten Grades at Six Key Prospects in Mt Garnet Project

Starlight Prospect Yields Peak Tungsten Grade of 13.2% W Across 800 Metres Strike

The Starlight Prospect consists of two distinct target zones featuring a tungsten-rich area where extremely high-grade tungsten rock chip samples have been discovered over roughly 800 metres of strike. This prospect is centred on historic tin and tungsten mines, with mineralisation hosted within quartz micro veinlets in variably greisenised granite. About 300 metres west of the tungsten zone lies a separate, strong tin-in-soil anomaly identified from 1980s sampling, suggesting multiple mineralisation styles and commodity prospects within the area.

During the recent rock chip campaign, two samples were taken at Starlight, with one sample along the 800-metre tungsten trend delivering an outstanding 13.2% W assay. Historical sampling at Starlight also returned impressive results, including 15.2% W and 2.1% W, confirming continuity of high-grade tungsten mineralisation across the prospect. The combination of recent and historical high-grade assays and extensive mineralised trends strongly supports systematic follow-up exploration.

Gows Prospect Reveals Polymetallic Mineralisation with 5.4% Tungsten

The Gows Prospect includes numerous small historic mines that produced tungsten, tin, and bismuth, with most mining activity before 1913 and intermittent operations until 1954. Mineralisation at Gows is linked to gossanous horizons and fractures in greisenised granite, with mineralised greisen bodies stacked flat-lying and extending over 700 by 500 metres. The recent reconnaissance program collected 18 rock chip samples, mostly along the 500-metre prospective strike.

Eight samples from Gows showed highly anomalous tungsten grades, while seven others were anomalous in additional indicator elements. Top tungsten assays included 5.4% W, 2.8% W, and 1.2% W. Other notable high grades were 3.2% Sn, 35.4% Cu, 378 ppm silver, 1.6 g/t gold, and 3,070 ppm yttrium. These multi-element results indicate Gows may be part of a broader polymetallic system with multiple mineralisation phases, enhancing exploration potential beyond tungsten alone. Systematic soil sampling is planned for Q3 to expand the mineralised footprint and evaluate further mineralisation styles.

Mountain Maid and Ahmets Prospects Exhibit Extensive High-Grade Tungsten Zones

The Mountain Maid Prospect recently yielded a rock chip sample assaying 1.6% W, with previous samples up to 5.1% W. It features a large high-tenor tungsten-in-soil anomaly measuring 500 by 400 metres, coincident with a high-tenor tin-in-soil anomaly, indicating multiple economic mineralised zones. The combination of multi-element soil anomalies and high-grade rock chips makes it a compelling target for systematic exploration and drill testing.

At the Ahmets Prospect, multiple very high-grade rock chip assays have been recorded, including historical results of 9.2% W and 8.0% W, and recent sampling showing 5.0% W. These confirm persistent high-grade tungsten mineralisation and support prioritising Ahmets for follow-up. The Crest Prospect hosts a 200-metre outcrop of quartz-greisen vein with tungsten assays up to 3.7% W. Tungsten Knob rounds out the six priority targets, with recent samples assaying 1.2% W and anomalous tungsten rock chips over 150 metres strike.

Maiden Drilling Program Advances at Stannex and Gilmore Prospects

Koba Resources' first drilling campaign at Mt Garnet is progressing well, with 19 holes drilled totaling 2,267 metres out of a planned 3,000 metres. The program targets high-priority tin prospects at Stannex and Gilmore. The company plans to release assay results in the coming weeks, underscoring its commitment to advancing key targets toward resource definition.

After completing drilling at Mt Garnet and securing the final permit, the rig will move to the Stannary Hills Project to test additional high-priority tin-tungsten targets. This progression highlights multiple prospects across Koba’s portfolio warranting drill testing, ensuring a robust pipeline of exploration targets. The company’s systematic prioritisation and drilling approach enables efficient allocation of exploration capital toward the most promising mineral systems.

August Soil Sampling Program to Define Mineralised Trends and Scale

Building on the initial tungsten reconnaissance success, Koba Resources plans to launch a systematic soil sampling program in August, alongside further mapping and rock chip sampling. This follow-up aims to delineate mineralised trends across the six priority prospects, assess mineralisation scale, and identify top targets for drilling. Combined with geological mapping, soil sampling will guide prioritisation of exploration investment for subsequent phases.

Managing Director and CEO Ben Vallerine stated the results confirm widespread high-grade tungsten occurrences throughout Mt Garnet. He emphasized that the prospects feature prospective geology, historic workings, extensive mineralised trends, and coincident high-tenor soil anomalies in some areas. This suite of geological and geochemical indicators provides a strong pipeline of compelling tungsten targets. The company’s methodical exploration approach ensures efficient capital deployment and risk management as the project advances.

High-Grade Tin Results Complement Tungsten Discoveries

Alongside outstanding tungsten assays, the reconnaissance program yielded significant high-grade tin results. Rock chip samples from the Maria Prospect returned 7.7% Sn, while Stannex samples yielded 4.5% Sn. These tin results highlight multiple tin mineralisation opportunities within the Mt Garnet Project alongside tungsten targets. The presence of high-grade tin in tungsten-focused sampling suggests polymetallic mineral systems with potential for diverse commodity extraction.

The coexistence of high-grade tungsten and tin mineralisation supports the company’s dual-commodity project thesis. This diversification enhances exploration upside and broadens potential market applications for any future resource. The maiden drilling program at Stannex and Gilmore specifically targets high-priority tin zones, confirming tin remains a core focus in the overall exploration strategy.

Company Overview and Queensland Exploration Portfolio

Koba Resources Limited, listed on the ASX and headquartered in Subiaco, Western Australia, focuses on discovering and developing tin and tungsten deposits in Queensland. Its flagship asset is the Mt Garnet Tin-Tungsten Project, which has become central to the portfolio following successful reconnaissance sampling and drilling commencement. Located in a historically rich tin and tungsten mining region, the project benefits from geological and infrastructure advantages for exploration and potential development.

The company’s exploration strategy emphasizes identifying high-grade primary mineralisation through systematic field reconnaissance, followed by target prioritisation for drilling based on geological and geochemical data. Mt Garnet comprises multiple prospects within consolidated tenure, enabling efficient resource concentration on the most prospective mineral systems. The identification of six priority tungsten prospects from the initial reconnaissance validates this systematic approach in unlocking discovery opportunities.

Market Landscape for Tungsten and Tin Exploration in Australia

Tungsten and tin are critical minerals with vital industrial uses in manufacturing, electronics, and defense sectors. Global supply concentration has intensified exploration in traditional tin and tungsten districts like Queensland. The discovery of high-grade primary mineralisation at Mt Garnet aligns with growing market interest in these strategic commodities. Australia’s regulatory framework, skilled mining services, and infrastructure create a favorable environment for junior explorers advancing tin and tungsten projects toward resource definition.

Koba’s focus on high-grade primary mineralisation meets market demand for economically processable mineral products. Historical mining at multiple Mt Garnet prospects confirms mineralisation styles amenable to extraction and processing. The rapid identification of high-grade rock chips during reconnaissance demonstrates access to prospective geology with genuine economic potential, supporting continued systematic exploration investment.

Exploration Risks and Development Considerations

Mineral exploration involves significant risks, including the possibility that mineralisation may not extend economically at depth, drilling may not confirm rock chip grades, or defined resources may be uneconomic to mine. Mt Garnet remains in early-stage exploration, with reconnaissance sampling completed and drilling underway but no indicated or inferred resources yet defined. High-grade rock chip results do not guarantee economic mineralisation at depth or across prospects.

Specific risks include obtaining further exploration permits, potential ground access delays, and mineralisation variability typical of tin and tungsten deposits. Substantial additional capital will be needed to advance toward resource definition and development. Investors should recognize Koba as an early-stage exploration company without revenues and understand the significant financial risks, including potential capital loss, associated with mineral exploration investments.