Rosewood Drilling Yields Up to 23.5% Heavy Mineral Over 42 Metres

Strong Drill Results Reinforce Rosewood's Potential

PTR Minerals Ltd (ASX, PTR) has delivered a significant update from its Rosewood Titanium Project in South Australia's northern Gawler Craton, reporting outstanding heavy mineral assay results from 47 recently completed drill holes. These results reveal some of the thickest and highest-grade intercepts recorded to date, with heavy mineral (HM) concentrations reaching up to 23.5% over substantial widths, including a standout 42-metre intercept grading 11.9% HM from surface.

The drilling campaign, part of a broader 446-hole program covering approximately 40 square kilometres, confirms the continuity and scale of the mineralised system, particularly in the Rosewood East area. The vertical drilling approach has effectively captured the flat-lying mineralisation, providing confidence in the thickness and grade continuity essential for resource estimation.

Advancing Towards Maiden Resource Estimate

PTR is on track to release its maiden JORC Mineral Resource Estimate in the second quarter of 2026, aiming to classify a significant portion of the deposit to an Indicated level. CEO Peter Reid highlighted that the consistent grades above 10% HM over thick intervals bode well for a substantial high-grade tonnage inclusion in the upcoming resource.

Ongoing assay and resource modelling work, supported by advanced analytical techniques such as XRF and QEMSCAN, underpin the robust geological understanding required for this milestone. The company’s methodical approach reflects industry best practice and positions Rosewood as a promising new entrant in the titanium sands sector.

Metallurgical Success and Processing Optimisation

Complementing the drilling success, metallurgical test work has demonstrated excellent recoveries of heavy minerals using conventional gravity separation methods. Test results from bulk samples have produced heavy mineral concentrates (HMC) with grades between 91% and 98% HM and recoveries ranging from 86% to 95%, confirming the amenability of Rosewood ore to standard processing techniques.

Further mineral separation tests are underway to refine product specifications and optimise processing flowsheets. Engagement with leading industry consultants Mineral Technologies and IHC Mining is advancing plant design studies, including considerations for a Mineral Separation Plant near Whyalla Port. These efforts aim to balance technical feasibility with economic viability, laying groundwork for future development.

Environmental and Infrastructure Foundations

PTR is also progressing comprehensive environmental baseline studies covering flora, fauna, and hydrogeology, alongside assessments of power, water, transport, logistics, and port access. These studies are critical to de-risking the project and ensuring compliance with regulatory standards. Stakeholder engagement remains a key focus as the company navigates the path from exploration to potential production.

With a three-tonne representative bulk sample collected in late 2025, PTR is well-positioned to continue its technical and environmental workstreams through 2026, setting the stage for a detailed feasibility assessment.