Tusker Minerals Defines Multi-Billion-Tonne Rutile Target in Cameroon

Douala Basin Emerges as a Major Rutile Province

Tusker Minerals Ltd (ASX:TSK) has announced a substantial JORC (2012) Exploration Target for its Diwong South Deposit within the Douala Basin Project in Cameroon. The target ranges between 2.1 and 2.6 billion tonnes at 2.1–2.3% total heavy minerals (THM), including 0.3–0.35% rutile and 0.06–0.07% zircon. This positions Douala among the largest emerging rutile-bearing heavy mineral sands systems globally, with an estimated 7–8 million tonnes of contained rutile and 1.4–1.7 million tonnes of zircon.

What sets Douala apart is its rutile-dominant titanium mineral assemblage, where rutile comprises roughly 15% of the THM, materially exceeding ilmenite, which is typically the dominant titanium mineral in most deposits. Additionally, the deposit hosts significant kyanite; about 70% of the THM assemblage; offering potential for an industrial mineral co-product, although this remains unvalued pending further testwork.

Exploration Target Covers Only a Fraction of the Project

The current Exploration Target covers approximately 152 km², which is just 6% of Tusker’s expansive 2,580 km² Douala Basin tenure. This leaves considerable room for growth, as multiple additional prospective target areas have yet to be systematically tested. Moreover, the mineralisation remains open at depth beyond the historical drilling limits of 18–24 metres, suggesting potential for further scale expansion.

Initial reconnaissance drilling has already identified higher-grade near-surface mineralisation beyond the current target, including standout intercepts such as 3.2 metres at 0.76% rutile and 0.08% zircon from surface, and a peak sample of 1.0 metre at 0.86% rutile with 0.12% zircon. These grades are roughly double the upper end of the current Exploration Target rutile grade range, indicating promising upside potential across the basin.

Strategic Location with World-Class Infrastructure

Douala’s infrastructure and logistics position is a key competitive advantage. The project lies within 10 to 50 kilometres of the Port of Douala, Cameroon’s largest seaport, with established road networks, grid power, skilled labour, and an international airport nearby. This proximity is rare among large African mineral sands projects and could significantly reduce development complexity, logistics costs, and execution risks compared to more remote peers.

Pathway to Maiden JORC Mineral Resource

Tusker plans a capital-efficient program to convert the Exploration Target into a maiden JORC Mineral Resource Estimate (MRE) within 6 to 9 months. The strategy includes targeted infill and step-out drilling focused on the upper aeolian plateaus, deeper drilling to test mineralisation below historical depths, and expanded metallurgical testwork on rutile, zircon, and kyanite recovery. This approach aims to deliver a resource estimate on the most robust zones while simultaneously exploring deeper and higher-grade targets across the broader basin.

Douala in the Global Rutile Landscape

When benchmarked against selected global rutile and heavy mineral sands projects, Douala’s scale is impressive. While still at the Exploration Target stage, its 7–8 million tonnes of contained rutile compares favourably with projects like Sovereign Metals’ Kasiya in Malawi (~20 Mt rutile) and Kenmare’s Moma in Mozambique (~3.3 Mt rutile). Unlike many ilmenite-dominant deposits, Douala’s rutile-rich assemblage and significant zircon credits set it apart as a potential source of premium titanium feedstock.

Executive Chairman Daniel Smith described Douala as a “genuine company-maker” for Tusker, emphasizing the combination of multi-billion-tonne scale, a high-quality rutile-rich mineral suite, and exceptional infrastructure as rare attributes that underpin the project’s strategic value.

Building a Leading African Titanium Company

Douala now anchors Tusker’s ambition to become a leading African titanium producer. Alongside its Central Rutile Project in Cameroon and the Mzimba Rutile Project in Malawi, Tusker controls a large and diverse portfolio spanning different deposit styles and jurisdictions. The company’s focus on premium titanium feedstocks and scalable discovery potential positions it well within the growing global titanium supply landscape.

CEO Cliff Fitzhenry highlighted the “game-changing milestone” of defining multi-billion-tonne scale within a shallow, infrastructure-advantaged rutile-zircon system. He noted that Douala’s scale and quality, combined with higher-grade upside and logistics advantages, could make it one of the most significant rutile discoveries in recent decades.

As Tusker advances resource definition and continues exploration across its vast Douala tenure, the market will be watching for drilling results, metallurgical insights, and progress toward a maiden Mineral Resource Estimate.